librenms-librenms/html/forms/health-update.inc.php

<?php

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

// FUA

if(!is_numeric($_POST['device_id']) || !is_numeric($_POST['sensor_id']) || (empty($_POST['data']) || !isset($_POST['data'])))
{
  echo('error with data');
  exit;
}
else
{
  $update = dbUpdate(array($_POST['value_type'] => $_POST['data'], 'sensor_custom' => 'Yes'), 'sensors', '`sensor_id` = ? AND `device_id` = ?', array($_POST['sensor_id'],$_POST['device_id']));
  if(!empty($update) || $update == '0')
  {
    echo('success');
    exit;
  }
  else
  {
    echo('error');
    exit;
  }
}