Re: Remote call to COM impersonating another user

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"JCav" <jcavanaugh@xxxxxxxxxxxx> wrote in message news:4783da79$0$9628$4c368faf@xxxxxxxxxxxxxxxxx
These are the calls I'm using. LogonUser is failing with a 1326 - invalid userID or password, even though these work when I log onto the machine. So I never get far enough to make the call to the COM object.
int retxxx = CoInitializeSecurity(IntPtr.Zero, -1, IntPtr.Zero, IntPtr.Zero, RpcAuthnLevel.Connect, RpcImpLevel.Impersonate, IntPtr.Zero, (int)EoAuthnCap.DynamicCloaking, IntPtr.Zero);

const int LOGON32_PROVIDER_DEFAULT = 0;

const int LOGON32_LOGON_INTERACTIVE = 2;

const int LOGON32_LOGON_NETWORK = 3;

IntPtr tokenHandle = new IntPtr(0);

bool returnValue = LogonUser(xxx", "yyy", "zzz",LOGON32_LOGON_NETWORK, LOGON32_PROVIDER_DEFAULT, ref tokenHandle);




And you function declaration looks like:

[DllImport("advapi32", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool LogonUser(
string lpszUserName,
string lpszDomain,
string lpszPassword,
int dwLogonType,
int dwLogonProvider,
ref IntPtr hToken);

bool result = LogonUser(name, domain, passwd,
LOGON32_LOGON_INTERACTIVE ,
LOGON32_PROVIDER_DEFAULT,
ref tokenHandle);
if (result == false) // If failed
{
}
else // success
{

Note that you should use LOGON32_LOGON_INTERACTIVE or LOGON32_LOGON_BATCH (value 4) as logon type, other types will not return a token that can be used to impersonate unless you are running in the context of an administrator (or an account with "SeImpersonatePrivileges" enabled) .


Willy.



.

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