int dot = server.indexOf('.');
                if ( dot > 0 && Character.isDigit(server.charAt(0)) == false )
                    server = server.substring(0, dot);
                try ( LsaPolicyHandle policyHandle = new LsaPolicyHandle(handle, "\\\\" + server, 0x00000800) ) {
                    resolveSids(handle, policyHandle, sids);
                }
            }
            catch ( IOException e ) {

            SYSTEM = new SID("S-1-5-18");
        } catch (SmbException se) {
        }
    }

    static Map sid_cache = new HashMap();

    static void resolveSids(DcerpcHandle handle,
                LsaPolicyHandle policyHandle,
                SID[] sids) throws IOException {
        MsrpcLookupSids rpc = new MsrpcLookupSids(policyHandle, sids);
        handle.sendrecv(rpc);
        switch (rpc.retval) {
            case 0: