77 lines
3.0 KiB
C#
77 lines
3.0 KiB
C#
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//------------------------------------------------------------------------------
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// <copyright file="IISVersionHelper.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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using System.Runtime.InteropServices;
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namespace System.Web.Configuration {
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internal class IISVersionHelper : IDisposable {
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const int IIS_PRODUCT_EXPRESS = 2;
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[ComImport, Guid("1B036F99-B240-4116-A6A0-B54EC5B2438E"), InterfaceType((short)1)]
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interface IIISVersion {
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[return: MarshalAs(UnmanagedType.Struct)]
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object GetPropertyValue([In, MarshalAs(UnmanagedType.BStr)] string bstrName);
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[return: MarshalAs(UnmanagedType.Struct)]
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object CreateObjectFromProgId([In, MarshalAs(UnmanagedType.BStr)] string bstrObjectName);
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[return: MarshalAs(UnmanagedType.Struct)]
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object CreateObjectFromClsId([In] Guid clsidObject);
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void ApplyIISEnvironmentVariables();
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void ClearIISEnvironmentVariables();
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void ApplyManifestContext();
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void ClearManifestContext();
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}
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[ComImport, InterfaceType((short)1), Guid("9CDA0717-2EB5-42b3-B5B0-16F4941B2029")]
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interface IIISVersionManager {
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[return: MarshalAs(UnmanagedType.Interface)]
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IIISVersion GetVersionObject([In, MarshalAs(UnmanagedType.BStr)] string bstrVersion, [In, MarshalAs(UnmanagedType.I4)] int productType);
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[return: MarshalAs(UnmanagedType.SafeArray, SafeArraySubType = VarEnum.VT_VARIANT)]
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IIISVersion[] GetAllVersionObjects();
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}
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IIISVersionManager _versionManager;
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IIISVersion _version;
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internal IISVersionHelper(string version) {
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// version is null if we're supposed to use the OS's IIS installation
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if (version == null)
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return;
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try {
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_versionManager = CreateVersionManager();
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_version = _versionManager.GetVersionObject(version, IIS_PRODUCT_EXPRESS);
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_version.ApplyManifestContext();
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}
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catch {
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Release();
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throw;
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}
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}
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private static IIISVersionManager CreateVersionManager() {
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Type type = Type.GetTypeFromProgID("Microsoft.IIS.VersionManager", throwOnError: true);
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return (IIISVersionManager)Activator.CreateInstance(type);
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}
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public void Dispose() {
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if (_version != null) {
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_version.ClearManifestContext();
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Release();
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}
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}
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private void Release() {
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if (_version != null) {
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Marshal.ReleaseComObject(_version);
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_version = null;
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}
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if (_versionManager != null) {
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Marshal.ReleaseComObject(_versionManager);
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_versionManager = null;
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}
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}
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}
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}
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