FusionWrap.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / Microsoft / Win32 / FusionWrap.cs / 1305376 / FusionWrap.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
//--------------------------------------------------------------
// FusionInterfaces.cs 
// 
// This implements wrappers to Fusion interfaces
//------------------------------------------------------------- 
namespace Microsoft.Win32
{
    using System;
    using System.IO; 
    using System.Collections;
    using System.Runtime.InteropServices; 
    using System.Runtime.CompilerServices; 
    using System.Globalization;
    using StringBuilder = System.Text.StringBuilder; 
#if !FEATURE_COMINTEROP
    using Microsoft.Win32.SafeHandles;
#endif // !FEATURE_COMINTEROP
 

#if FEATURE_COMINTEROP 
    //------------------------------------------------------------- 
    // Interfaces defined by fusion
    //------------------------------------------------------------- 
    [ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("21b8916c-f28e-11d2-a473-00c04f8ef448")]
    interface IAssemblyEnum
    {
        [PreserveSig()] 
        int GetNextAssembly(out IApplicationContext ppAppCtx, out IAssemblyName ppName, uint dwFlags);
        [PreserveSig()] 
        int Reset(); 
        [PreserveSig()]
        int Clone(out IAssemblyEnum ppEnum); 
    }

    [ComImport,InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("7c23ff90-33af-11d3-95da-00a024a85b51")]
    interface IApplicationContext 
    {
        void SetContextNameObject(IAssemblyName pName); 
        void GetContextNameObject(out IAssemblyName ppName); 
        void Set([MarshalAs(UnmanagedType.LPWStr)] String szName, int pvValue, uint cbValue, uint dwFlags);
        void Get([MarshalAs(UnmanagedType.LPWStr)] String szName, out int pvValue, ref uint pcbValue, uint dwFlags); 
        void GetDynamicDirectory(out int wzDynamicDir, ref uint pdwSize);
    }

 
    [ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("CD193BC0-B4BC-11d2-9833-00C04FC31D2E")]
    interface IAssemblyName 
    { 
        [PreserveSig()]
        int SetProperty(uint PropertyId, IntPtr pvProperty, uint cbProperty); 
        [PreserveSig()]
        int GetProperty(uint PropertyId, IntPtr pvProperty, ref uint pcbProperty);
        [PreserveSig()]
        int Finalize(); 
        [PreserveSig()]
        int GetDisplayName(IntPtr szDisplayName, ref uint pccDisplayName, uint dwDisplayFlags); 
        [PreserveSig()] 
        int BindToObject(Object /*REFIID*/ refIID,
                         Object /*IAssemblyBindSink*/ pAsmBindSink, 
                         IApplicationContext pApplicationContext,
                         [MarshalAs(UnmanagedType.LPWStr)] String szCodeBase,
                         Int64 llFlags,
                         int pvReserved, 
                         uint cbReserved,
                         out int ppv); 
        [PreserveSig()] 
        int GetName(out uint lpcwBuffer, out int pwzName);
        [PreserveSig()] 
        int GetVersion(out uint pdwVersionHi, out uint pdwVersionLow);
        [PreserveSig()]
        int IsEqual(IAssemblyName pName, uint dwCmpFlags);
        [PreserveSig()] 
        int Clone(out IAssemblyName pName);
    } 
#endif // FEATURE_COMINTEROP 

    internal static class ASM_CACHE 
    {
         public const uint ZAP          = 0x1;
         public const uint GAC          = 0x2;
         public const uint DOWNLOAD     = 0x4; 
    }
 
    internal static class CANOF 
    {
        public const uint PARSE_DISPLAY_NAME = 0x1; 
        public const uint SET_DEFAULT_VALUES = 0x2;
    }

    internal static class ASM_NAME 
    {
         public const uint PUBLIC_KEY            = 0; 
         public const uint PUBLIC_KEY_TOKEN      = PUBLIC_KEY + 1; 
         public const uint HASH_VALUE            = PUBLIC_KEY_TOKEN + 1;
         public const uint NAME                  = HASH_VALUE + 1; 
         public const uint MAJOR_VERSION         = NAME + 1;
         public const uint MINOR_VERSION         = MAJOR_VERSION + 1;
         public const uint BUILD_NUMBER          = MINOR_VERSION + 1;
         public const uint REVISION_NUMBER       = BUILD_NUMBER + 1; 
         public const uint CULTURE               = REVISION_NUMBER + 1;
         public const uint PROCESSOR_ID_ARRAY    = CULTURE + 1; 
         public const uint OSINFO_ARRAY          = PROCESSOR_ID_ARRAY + 1; 
         public const uint HASH_ALGID            = OSINFO_ARRAY + 1;
         public const uint ALIAS                 = HASH_ALGID + 1; 
         public const uint CODEBASE_URL          = ALIAS + 1;
         public const uint CODEBASE_LASTMOD      = CODEBASE_URL + 1;
         public const uint NULL_PUBLIC_KEY       = CODEBASE_LASTMOD + 1;
         public const uint NULL_PUBLIC_KEY_TOKEN  = NULL_PUBLIC_KEY + 1; 
         public const uint CUSTOM                = NULL_PUBLIC_KEY_TOKEN + 1;
         public const uint NULL_CUSTOM           = CUSTOM + 1; 
         public const uint MVID                  = NULL_CUSTOM + 1; 
         public const uint _32_BIT_ONLY          = MVID + 1;
         public const uint MAX_PARAMS            = _32_BIT_ONLY + 1; 
     }

#if FEATURE_FUSION
    internal static class Fusion 
    {
        [System.Security.SecurityCritical]  // auto-generated 
        public static void ReadCache(ArrayList alAssems, String name, uint nFlag) 
        {
#if FEATURE_COMINTEROP 
            IAssemblyEnum aEnum = null;
            IAssemblyName aName = null;
            IAssemblyName aNameEnum = null;
            IApplicationContext AppCtx = null; 
#else // FEATURE_COMINTEROP
            SafeFusionHandle aEnum      = null; 
            SafeFusionHandle aNameEnum  = null; 
            SafeFusionHandle AppCtx     = SafeFusionHandle.InvalidHandle;
#endif // FEATURE_COMINTEROP 
            int hr;

            if (name != null)
            { 
                hr = Win32Native.CreateAssemblyNameObject(out aNameEnum, name, CANOF.PARSE_DISPLAY_NAME, IntPtr.Zero);
                if (hr != 0) 
                    Marshal.ThrowExceptionForHR(hr); 
            }
 
#if !FEATURE_COMINTEROP
            using (aNameEnum)
#endif // !FEATURE_COMINTEROP
            { 

                hr = Win32Native.CreateAssemblyEnum(out aEnum, AppCtx, aNameEnum, nFlag, IntPtr.Zero); 
                if (hr != 0) 
                    Marshal.ThrowExceptionForHR(hr);
 
#if !FEATURE_COMINTEROP
                using (aEnum)
#endif // !FEATURE_COMINTEROP
                { 
                    for (;;)
                    { 
#if !FEATURE_COMINTEROP 
                        using (SafeFusionHandle aAppCtx = new SafeFusionHandle(), aName = new SafeFusionHandle())
#endif // !FEATURE_COMINTEROP 
                        {
#if FEATURE_COMINTEROP
                            hr = aEnum.GetNextAssembly(out AppCtx, out aName, 0);
                            if (hr != 0) 
                            {
                                if (hr < 0) 
                                    Marshal.ThrowExceptionForHR(hr); 
                                break;
                            } 
#else
                            if (!GetNextAssembly(aEnum, aAppCtx, aName, 0))
                                break;
#endif 

                            String sDisplayName = GetDisplayName(aName, 0); 
                            if (sDisplayName == null) 
                                continue;
 
                            alAssems.Add(sDisplayName);
                        } // using (aAppCtx, aName)
                    } // for (;;)
                } // using (aEnum) 
            } // using (aNameEnum)
        } 
 
#if FEATURE_COMINTEROP
        [System.Security.SecuritySafeCritical]  // auto-generated 
        static unsafe String GetDisplayName(IAssemblyName aName, uint dwDisplayFlags)
        {
            uint iLen=0;
            String sDisplayName = null; 

            aName.GetDisplayName((IntPtr)0, ref iLen, dwDisplayFlags); 
            if (iLen > 0) { 
                IntPtr pDisplayName=(IntPtr)0;
 
                // Do some memory allocating here
                // We need to assume that a wide character is 2 bytes.
                byte[] data = new byte[((int)iLen+1)*2];
                fixed (byte *dataptr = data) { 
                    pDisplayName = new IntPtr((void *) dataptr);
                    aName.GetDisplayName(pDisplayName, ref iLen, dwDisplayFlags); 
                    sDisplayName = Marshal.PtrToStringUni(pDisplayName); 
                }
            } 

            return sDisplayName;
        }
 
#else // FEATURE_COMINTEROP
        [MethodImplAttribute(MethodImplOptions.InternalCall)] 
        static extern bool GetNextAssembly(SafeFusionHandle pEnum, SafeFusionHandle pAppCtx, SafeFusionHandle pName, uint dwFlags); 

        [MethodImplAttribute(MethodImplOptions.InternalCall)] 
        static extern String GetDisplayName(SafeFusionHandle pName, uint dwDisplayFlags);
#endif // FEATURE_COMINTEROP
    }
#endif // FEATURE_FUSION 
 }

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