LibreNMS/Modules/Os.php
<?php
/**
* OS.php
*
* -Description-
*
* 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 <https://www.gnu.org/licenses/>.
*
* @link https://www.librenms.org
*
* @copyright 2020 Tony Murray
* @author Tony Murray <murraytony@gmail.com>
*/
namespace LibreNMS\Modules;
use App\Models\Device;
use App\Models\Eventlog;
use App\Models\Location;
use LibreNMS\Enum\Severity;
use LibreNMS\Interfaces\Data\DataStorageInterface;
use LibreNMS\Interfaces\Module;
use LibreNMS\Interfaces\Polling\OSPolling;
use LibreNMS\Polling\ModuleStatus;
use LibreNMS\Util\Url;
class Os implements Module
{
/**
* @inheritDoc
*/
public function dependencies(): array
{
return [];
}
public function shouldDiscover(\LibreNMS\OS $os, ModuleStatus $status): bool
{
return $status->isEnabledAndDeviceUp($os->getDevice());
}
public function discover(\LibreNMS\OS $os): void
{
$this->updateLocation($os);
$this->sysContact($os);
// null out values in case they aren't filled.
$os->getDevice()->fill([
'hardware' => null,
'version' => null,
'features' => null,
'serial' => null,
'icon' => null,
]);
$os->discoverOS($os->getDevice());
$this->handleChanges($os);
}
public function shouldPoll(\LibreNMS\OS $os, ModuleStatus $status): bool
{
return $status->isEnabledAndDeviceUp($os->getDevice());
}
public function poll(\LibreNMS\OS $os, DataStorageInterface $datastore): void
{
$deviceModel = $os->getDevice(); /** @var \App\Models\Device $deviceModel */
if ($os instanceof OSPolling) {
$os->pollOS($datastore);
} else {
$device = $os->getDeviceArray();
$location = null;
if (is_file(base_path('/includes/polling/os/' . $device['os'] . '.inc.php'))) {
// OS Specific
Eventlog::log("Warning: OS {$device['os']} using deprecated polling method", $deviceModel, 'poller', Severity::Error);
include base_path('/includes/polling/os/' . $device['os'] . '.inc.php');
} elseif (! empty($device['os_group']) && is_file(base_path('/includes/polling/os/' . $device['os_group'] . '.inc.php'))) {
// OS Group Specific
Eventlog::log("Warning: OS {$device['os']} using deprecated polling method", $deviceModel, 'poller', Severity::Error);
include base_path('/includes/polling/os/' . $device['os_group'] . '.inc.php');
}
// handle legacy variables, sometimes they are false
$deviceModel->version = ($version ?? $deviceModel->version) ?: null;
$deviceModel->hardware = ($hardware ?? $deviceModel->hardware) ?: null;
$deviceModel->features = ($features ?? $deviceModel->features) ?: null;
$deviceModel->serial = ($serial ?? $deviceModel->serial) ?: null;
if (! empty($location)) { // legacy support, remove when no longer needed
$deviceModel->setLocation($location);
$deviceModel->location?->save();
}
}
$this->handleChanges($os);
}
/**
* @inheritDoc
*/
public function cleanup(Device $device): void
{
// no cleanup needed
}
/**
* @inheritDoc
*/
public function dump(Device $device)
{
// get data fresh from the database
return [
'devices' => Device::where('device_id', $device->device_id)
->leftJoin('locations', 'location_id', 'id')
->select(['sysName', 'sysObjectID', 'sysDescr', 'sysContact', 'version', 'hardware', 'features', 'location', 'os', 'type', 'serial', 'icon'])
->get(),
];
}
private function handleChanges(\LibreNMS\OS $os): void
{
$device = $os->getDevice();
$device->icon = basename(Url::findOsImage($device->os, $device->features, null, 'images/os/'));
echo trans('device.attributes.location') . ': ' . $device->location?->display() . PHP_EOL;
foreach (['hardware', 'version', 'features', 'serial'] as $attribute) {
if (isset($device->$attribute)) {
$device->$attribute = trim($device->$attribute);
}
echo \App\Observers\DeviceObserver::attributeChangedMessage($attribute, $device->$attribute, $device->getOriginal($attribute)) . PHP_EOL;
}
$device->save();
}
private function updateLocation(\LibreNMS\OS $os): void
{
$device = $os->getDevice();
$new_location = $device->override_sysLocation ? new Location() : $os->fetchLocation(); // fetch location data from device
$device->setLocation($new_location, true); // set location and lookup coordinates if needed
$device->location?->save();
}
private function sysContact(\LibreNMS\OS $os): void
{
$device = $os->getDevice();
$device->sysContact = snmp_get($os->getDeviceArray(), 'sysContact.0', '-Ovq', 'SNMPv2-MIB');
$device->sysContact = str_replace(['', '"', '\n', 'not set'], '', $device->sysContact);
if (empty($device->sysContact)) {
$device->sysContact = null;
}
}
}