[英]Authenticate MSMQ Message with alternative credentials?
我編寫了一個 C# 應用程序,將 XML 對象放入 MSMQ 隊列。 隊列需要身份驗證。
MessageQueue queue = GetQueue();
var message = new Message();
message.Formatter = new CustomXMLFormatter();
message.Body = xml.ToString();
message.Label = "From my application";
message.UseAuthentication = true;
queue.Send(message, MessageQueueTransactionType.Single);
這一切今天都有效,但現在我需要改變我的身份驗證方式。 目前,使用運行應用程序的用戶對消息進行身份驗證。 但是,我想改用靜態 AD 用戶。 (原因是系統檢索消息需要所有消息都已由單個用戶帳戶添加)。
有沒有辦法更改執行身份驗證的用戶?
您可以嘗試使用Impersonator 。 如果您的應用程序在域內的機器上運行,則它運行良好。 如果機器在域之外,並且無法訪問 AD 目錄,您將不得不使用其他東西。
下面是代碼的示例:
using ( new Impersonator( "myUsername", "myDomainname", "myPassword" ) )
{
...
<code that executes under the new context>
...
}
作為參考,這里是文章中的代碼:
namespace Tools
{
#region Using directives.
// ----------------------------------------------------------------------
using System;
using System.Security.Principal;
using System.Runtime.InteropServices;
using System.ComponentModel;
// ----------------------------------------------------------------------
#endregion
/////////////////////////////////////////////////////////////////////////
/// <summary>
/// Impersonation of a user. Allows to execute code under another
/// user context.
/// Please note that the account that instantiates the Impersonator class
/// needs to have the 'Act as part of operating system' privilege set.
/// </summary>
/// <remarks>
/// This class is based on the information in the Microsoft knowledge base
/// article http://support.microsoft.com/default.aspx?scid=kb;en-us;Q306158
///
/// Encapsulate an instance into a using-directive like e.g.:
///
/// ...
/// using ( new Impersonator( "myUsername", "myDomainname", "myPassword" ) )
/// {
/// ...
/// [code that executes under the new context]
/// ...
/// }
/// ...
///
/// Please contact the author Uwe Keim (mailto:uwe.keim@zeta-software.de)
/// for questions regarding this class.
/// </remarks>
public class Impersonator :
IDisposable
{
#region Public methods.
// ------------------------------------------------------------------
/// <summary>
/// Constructor. Starts the impersonation with the given credentials.
/// Please note that the account that instantiates the Impersonator class
/// needs to have the 'Act as part of operating system' privilege set.
/// </summary>
/// <param name="userName">The name of the user to act as.</param>
/// <param name="domainName">The domain name of the user to act as.</param>
/// <param name="password">The password of the user to act as.</param>
public Impersonator(
string userName,
string domainName,
string password )
{
ImpersonateValidUser( userName, domainName, password );
}
// ------------------------------------------------------------------
#endregion
#region IDisposable member.
// ------------------------------------------------------------------
public void Dispose()
{
UndoImpersonation();
}
// ------------------------------------------------------------------
#endregion
#region P/Invoke.
// ------------------------------------------------------------------
[DllImport("advapi32.dll", SetLastError=true)]
private static extern int LogonUser(
string lpszUserName,
string lpszDomain,
string lpszPassword,
int dwLogonType,
int dwLogonProvider,
ref IntPtr phToken);
[DllImport("advapi32.dll", CharSet=CharSet.Auto, SetLastError=true)]
private static extern int DuplicateToken(
IntPtr hToken,
int impersonationLevel,
ref IntPtr hNewToken);
[DllImport("advapi32.dll", CharSet=CharSet.Auto, SetLastError=true)]
private static extern bool RevertToSelf();
[DllImport("kernel32.dll", CharSet=CharSet.Auto)]
private static extern bool CloseHandle(
IntPtr handle);
private const int LOGON32_LOGON_INTERACTIVE = 2;
private const int LOGON32_PROVIDER_DEFAULT = 0;
// ------------------------------------------------------------------
#endregion
#region Private member.
// ------------------------------------------------------------------
/// <summary>
/// Does the actual impersonation.
/// </summary>
/// <param name="userName">The name of the user to act as.</param>
/// <param name="domainName">The domain name of the user to act as.</param>
/// <param name="password">The password of the user to act as.</param>
private void ImpersonateValidUser(
string userName,
string domain,
string password )
{
WindowsIdentity tempWindowsIdentity = null;
IntPtr token = IntPtr.Zero;
IntPtr tokenDuplicate = IntPtr.Zero;
try
{
if ( RevertToSelf() )
{
if ( LogonUser(
userName,
domain,
password,
LOGON32_LOGON_INTERACTIVE,
LOGON32_PROVIDER_DEFAULT,
ref token ) != 0 )
{
if ( DuplicateToken( token, 2, ref tokenDuplicate ) != 0 )
{
tempWindowsIdentity = new WindowsIdentity( tokenDuplicate );
impersonationContext = tempWindowsIdentity.Impersonate();
}
else
{
throw new Win32Exception( Marshal.GetLastWin32Error() );
}
}
else
{
throw new Win32Exception( Marshal.GetLastWin32Error() );
}
}
else
{
throw new Win32Exception( Marshal.GetLastWin32Error() );
}
}
finally
{
if ( token!= IntPtr.Zero )
{
CloseHandle( token );
}
if ( tokenDuplicate!=IntPtr.Zero )
{
CloseHandle( tokenDuplicate );
}
}
}
/// <summary>
/// Reverts the impersonation.
/// </summary>
private void UndoImpersonation()
{
if ( impersonationContext!=null )
{
impersonationContext.Undo();
}
}
private WindowsImpersonationContext impersonationContext = null;
// ------------------------------------------------------------------
#endregion
}
/////////////////////////////////////////////////////////////////////////
}
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