<?php
/**
 * opnsense.inc.php
 *
 * LibreNMS os polling module for OPNsense firewall
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * @package    LibreNMS
 * @link       http://librenms.org
 * @copyright  2018 Ben Gibbons
 * @author     Ben Gibbons <axemann@gmail.com>
 */

$output = preg_split("/ /", $device['sysDescr']);
$version = $output[2];
$hardware = $output[6];

// 20.1 onwards you can enable Display Version OID, which gives use the exact release number
$OIDVersionString = snmp_get($device, ".1.3.6.1.4.1.8072.1.3.2.3.1.2.7.118.101.114.115.105.111.110", '-Oqv');
if (is_string($OIDVersionString)) {
    $OIDVersionArray = preg_split("/ /", $OIDVersionString);
    $version = $OIDVersionArray[1];
    $hardware = preg_replace('/\(|\)/', '', $OIDVersionArray[2]);
}