private Impersonation(string domain, string username, string password, LogonType logonType)
{
IntPtr handle;
var ok = NativeMethods.LogonUser(username, domain, password, (int)logonType, 0, out handle);
if (!ok)
{
var errorCode = Marshal.GetLastWin32Error();
throw new ApplicationException(string.Format("Could not impersonate the elevated user. LogonUser returned error code {0}.", errorCode));
}
var profileInfo = new ProfileInfo();
profileInfo.dwSize = Marshal.SizeOf(profileInfo);
profileInfo.lpUserName = username;
profileInfo.dwFlags = 1;
ok = NativeMethods.LoadUserProfile(handle, ref profileInfo);
if (ok == false)
{
var errorCode = Marshal.GetLastWin32Error();
throw new ApplicationException(string.Format("Could not load profile. Error code {0}.", errorCode));
}
NativeMethods.UnloadUserProfile(handle, profileInfo.hProfile);
_handle = new SafeTokenHandle(handle);
_context = WindowsIdentity.Impersonate(_handle.DangerousGetHandle());
}
public static extern bool LoadUserProfile(IntPtr hToken, ref ProfileInfo lpProfileInfo);