librenms-librenms/includes/polling/os/waas.inc.php

<?php
/*
 * LibreNMS
 *
 * Copyright (c) 2016 Søren Friis Rosiak <sorenrosiak@gmail.com> 
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.  Please see LICENSE.txt at the top level of
 * the source code distribution for details.
 */

$oids = 'entPhysicalContainedIn.1 entPhysicalSoftwareRev.1 entPhysicalSerialNum.1 entPhysicalModelName.1';
$data = snmp_get_multi($device, $oids, '-OQUs', 'ENTITY-MIB');
if ($data[1]['entPhysicalContainedIn'] == '0') {
    if (!empty($data[1]['entPhysicalSoftwareRev'])) {
        $version = $data[1]['entPhysicalSoftwareRev'];
    }
    if (!empty($data[1]['entPhysicalModelName'])) {
        $hardware = $data[1]['entPhysicalModelName'];
    }
    if (!empty($data[1]['entPhysicalSerialNum'])) {
        $serial = $data[1]['entPhysicalSerialNum'];
    }
}