В итоге я использовал код из Михель ван Отегем: WindowsImpersonationContext упростил и добавил реализацию IDisposable. Я нашел это в другой вопрос об олицетворении в ASP.NET .
Использование:
using (WindowsImpersonationContextFacade impersonationContext
= new WindowsImpersonationContextFacade(
Settings.Default.ImpersonationDomain,
Settings.Default.ImpersonationUser,
Settings.Default.ImpersonationPass))
{
transactions = TransactionLoader.Load(filePath);
}
Код:
using System;
using System.Runtime.InteropServices;
using System.Security.Principal;
using System.Security.Permissions;
using System.ComponentModel;
namespace MyNamespace
{
public class WindowsImpersonationContextFacade : IDisposable
{
[DllImport("advapi32.dll", SetLastError = true)]
public static extern bool LogonUser(String lpszUsername, String lpszDomain,
String lpszPassword, int dwLogonType, int dwLogonProvider,
ref IntPtr phToken);
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
public static extern bool CloseHandle(IntPtr handle);
private const int LOGON32_PROVIDER_DEFAULT = 0;
private const int LOGON32_LOGON_INTERACTIVE = 2;
private string m_Domain;
private string m_Password;
private string m_Username;
private IntPtr m_Token;
private WindowsImpersonationContext m_Context = null;
protected bool IsInContext
{
get { return m_Context != null; }
}
public WindowsImpersonationContextFacade(string domain, string username, string password)
{
m_Domain = domain;
m_Username = username;
m_Password = password;
Enter();
}
[PermissionSetAttribute(SecurityAction.Demand, Name = "FullTrust")]
private void Enter()
{
if (this.IsInContext) return;
m_Token = IntPtr.Zero;
bool logonSuccessfull = LogonUser(
m_Username,
m_Domain,
m_Password,
LOGON32_LOGON_INTERACTIVE,
LOGON32_PROVIDER_DEFAULT,
ref m_Token);
if (logonSuccessfull == false)
{
int error = Marshal.GetLastWin32Error();
throw new Win32Exception(error);
}
WindowsIdentity identity = new WindowsIdentity(m_Token);
m_Context = identity.Impersonate();
}
[PermissionSetAttribute(SecurityAction.Demand, Name = "FullTrust")]
private void Leave()
{
if (this.IsInContext == false) return;
m_Context.Undo();
if (m_Token != IntPtr.Zero) CloseHandle(m_Token);
m_Context = null;
}
public void Dispose()
{
Leave();
}
}
}