librenms-librenms/html/includes/forms/update-ifalias.inc.php

<?php

/*
 * LibreNMS
 *
 * Copyright (c) 2014 Neil Lathwood <https://github.com/laf/ http://www.lathwood.co.uk/fa>
 *
 * 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.
*/

$status  = 'error';

$descr = mres($_POST['descr']);
$device_id = mres($_POST['device_id']);
$ifName = mres($_POST['ifName']);
$port_id = mres($_POST['port_id']);

logfile($descr . ','. $device_id . ','. $ifName. ','. $port_id);

if (!empty($ifName) && is_numeric($port_id)) {
    // We have ifName and  port id so update ifAlias
    if (empty($descr)) {
        $descr = 'repoll';
        // Set to repoll so we avoid using ifDescr on port poll
    }
    if (dbUpdate(array('ifAlias'=>$descr), 'ports', '`port_id`=?', array($port_id)) > 0) {
        $device = device_by_id_cache($device_id);
        if ($descr === 'repoll') {
            del_dev_attrib($device, 'ifName');
        }
        else {
            set_dev_attrib($device, 'ifName', $ifName);
        }
        $status = 'ok';
    }
    else {
        $status = 'na';
    }
}

$response = array(
    'status'        => $status,
);
echo _json_encode($response);