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<?php
// Icinga Web 2 Cube Module | (c) 2016 Icinga GmbH | GPLv2
namespace Icinga\Module\Cube\Ido;
use Icinga\Application\Config;
use Icinga\Authentication\Auth;
use Icinga\Data\Filter\Filter;
use Icinga\Exception\ConfigurationError;
use Icinga\Exception\QueryException;
use Icinga\Module\Monitoring\Backend\MonitoringBackend;
use Icinga\Util\GlobFilter;
/**
* IdoCube
*
* Base class for IDO-related cubes
*
* @package Icinga\Module\Cube\Ido
*/
abstract class IdoCube extends DbCube
{
/** @var array */
protected $availableFacts = array();
/** @var string We ask for the IDO version for compatibility reasons */
protected $idoVersion;
/** @var MonitoringBackend */
protected $backend;
/**
* Cache for {@link filterProtectedCustomvars()}
*
* @var string|null
*/
protected $protectedCustomvars;
/** @var GlobFilter The properties to hide from the user */
protected $blacklistedProperties;
public const IS_USING_ICINGADB = false;
/**
* Add a specific named dimension
*
* Right now these are just custom vars, we might support group memberships
* or other properties in future
*
* @param string $name
*
* @return $this
*/
public function addDimensionByName($name): self
{
if (count($this->filterProtectedCustomvars([$name])) === 1) {
$this->addDimension($this->createDimension($name));
}
return $this;
}
/**
* We can steal the DB connection directly from a Monitoring backend
*
* @param MonitoringBackend $backend
* @return $this
*/
public function setBackend(MonitoringBackend $backend)
{
$this->backend = $backend;
$resource = $backend->getResource();
$resource->getDbAdapter()
->getConnection()
->setAttribute(\PDO::ATTR_CASE, \PDO::CASE_NATURAL);
$this->setConnection($resource);
return $this;
}
/**
* Provice access to our DB resource
*
* This lazy-loads the default monitoring backend in case no DB has been
* given
*
* @return \Zend_Db_Adapter_Abstract
*/
public function db()
{
$this->requireBackend();
return parent::db();
}
/**
* Returns the Icinga IDO version
*
* @return string
*/
protected function getIdoVersion()
{
if ($this->idoVersion === null) {
$db = $this->db();
$this->idoVersion = $db->fetchOne(
$db->select()->from('icinga_dbversion', 'version')
);
}
return $this->idoVersion;
}
/**
* Steal the default monitoring DB resource...
*
* ...in case none has been defined otherwise
*
* @return void
*/
protected function requireBackend()
{
if ($this->db === null) {
$this->setBackend(MonitoringBackend::instance());
}
}
protected function getMonitoringRestriction()
{
$restriction = Filter::matchAny();
$restriction->setAllowedFilterColumns(array(
'host_name',
'hostgroup_name',
'instance_name',
'service_description',
'servicegroup_name',
function ($c) {
return preg_match('/^_(?:host|service)_/i', $c);
}
));
$filters = Auth::getInstance()->getUser()->getRestrictions('monitoring/filter/objects');
foreach ($filters as $filter) {
if ($filter === '*') {
return Filter::matchAny();
}
try {
$restriction->addFilter(Filter::fromQueryString($filter));
} catch (QueryException $e) {
throw new ConfigurationError(
'Cannot apply restriction %s using the filter %s. You can only use the following columns: %s',
'monitoring/filter/objects',
$filter,
implode(', ', array(
'instance_name',
'host_name',
'hostgroup_name',
'service_description',
'servicegroup_name',
'_(host|service)_<customvar-name>'
)),
$e
);
}
}
return $restriction;
}
/**
* Return the given array without values matching the custom variables protected by the monitoring module
*
* @param string[] $customvars
*
* @return string[]
*/
protected function filterProtectedCustomvars(array $customvars)
{
if ($this->blacklistedProperties === null) {
$this->blacklistedProperties = new GlobFilter(
Auth::getInstance()->getRestrictions('monitoring/blacklist/properties')
);
}
if ($this instanceof IdoServiceStatusCube) {
$type = 'service';
} else {
$type = 'host';
}
$customvars = $this->blacklistedProperties->removeMatching(
[$type => ['vars' => array_flip($customvars)]]
);
$customvars = isset($customvars[$type]['vars']) ? array_flip($customvars[$type]['vars']) : [];
if ($this->protectedCustomvars === null) {
$config = Config::module('monitoring')->get('security', 'protected_customvars');
$protectedCustomvars = array();
foreach (preg_split('~,~', $config, -1, PREG_SPLIT_NO_EMPTY) as $pattern) {
$regex = array();
foreach (explode('*', $pattern) as $literal) {
$regex[] = preg_quote($literal, '/');
}
$protectedCustomvars[] = implode('.*', $regex);
}
$this->protectedCustomvars = empty($protectedCustomvars)
? '/^$/'
: '/^(?:' . implode('|', $protectedCustomvars) . ')$/';
}
return preg_grep($this->protectedCustomvars, $customvars, PREG_GREP_INVERT);
}
}
|
