public static bool Impersonate(string userName, string domain, string password, TokenImpersonationLevel impersonationLevel)
{
lock (_syncRoot) {
var threadID = Thread.CurrentThread.ManagedThreadId;
if (IsCurrentlyImpersonated)
{
Revert();
}
var newUserToken = new TokenHandle();
var luRet = NativeMethods.LogonUser(userName, domain, password, NativeMethods.LOGON32_LOGON_INTERACTIVE, NativeMethods.LOGON32_PROVIDER_DEFAULT, ref newUserToken);
if (luRet == false)
{
newUserToken.Close();
return(false);
}
var duplicatedUserToken = new TokenHandle();
var dtRet = NativeMethods.DuplicateToken(newUserToken, (Int32)impersonationLevel, ref duplicatedUserToken);
if (dtRet == false)
{
duplicatedUserToken.Close();
newUserToken.Close();
return(false);
}
try {
var newIdentity = new WindowsIdentity(duplicatedUserToken.DangerousGetHandle());
var impersonationContext = newIdentity.Impersonate();
_impersonationPerThreadID.Add(threadID, new TransferBag(newUserToken, duplicatedUserToken, impersonationContext));
return(true);
} finally {
duplicatedUserToken.Close();
newUserToken.Close();
}
}
}
