96 lines
3.0 KiB
C#
96 lines
3.0 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="ADConnectionHelper.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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namespace System.Web.DataAccess
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{
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using System.Net;
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using System.Diagnostics;
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using System.Web.Hosting;
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using System.Web.Security;
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using System.DirectoryServices;
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using System.DirectoryServices.Protocols;
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internal static class ActiveDirectoryConnectionHelper
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{
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internal static DirectoryEntryHolder GetDirectoryEntry(DirectoryInformation directoryInfo, string objectDN, bool revertImpersonation)
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{
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Debug.Assert ((objectDN != null) && (objectDN.Length != 0));
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//
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// Get the adspath and create a directory entry holder
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//
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DirectoryEntryHolder holder = new DirectoryEntryHolder(new DirectoryEntry (
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directoryInfo.GetADsPath(objectDN),
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directoryInfo.GetUsername(),
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directoryInfo.GetPassword(),
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directoryInfo.AuthenticationTypes));
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//
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// If revertImpersonation is true, we need to revert
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//
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holder.Open(null, revertImpersonation);
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return holder;
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}
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}
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internal sealed class DirectoryEntryHolder
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{
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private ImpersonationContext ctx = null;
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private bool opened;
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private DirectoryEntry entry;
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internal DirectoryEntryHolder (DirectoryEntry entry)
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{
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Debug.Assert (entry != null);
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this.entry = entry;
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}
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internal void Open (HttpContext context, bool revertImpersonate)
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{
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if (opened)
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return; // Already opened
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//
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// Revert client impersonation if required
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//
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if (revertImpersonate)
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{
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ctx = new ApplicationImpersonationContext();
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}
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else
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{
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ctx = null;
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}
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opened = true; // Open worked!
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}
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internal void Close ()
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{
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if (!opened) // Not open!
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return;
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entry.Dispose();
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RestoreImpersonation();
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opened = false;
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}
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internal void RestoreImpersonation() {
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// Restore impersonation
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if (ctx != null)
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{
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ctx.Undo();
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ctx = null;
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}
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}
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internal DirectoryEntry DirectoryEntry
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{
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get { return entry; }
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}
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}
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}
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