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<?php
namespace Icinga\Module\Director\Web\Controller\Extension;
use Icinga\Module\Director\Auth\Restriction;
use Icinga\Module\Director\Db;
use Icinga\Module\Director\Web\Controller\ActionController;
use Icinga\Module\Director\Web\Window;
use RuntimeException;
trait DirectorDb
{
/** @var Db */
private $db;
protected function getDbResourceName()
{
if ($name = $this->getDbResourceNameFromRequest()) {
return $name;
} elseif ($name = $this->getPreferredDbResourceName()) {
return $name;
} else {
return $this->getFirstDbResourceName();
}
}
protected function getDbResourceNameFromRequest()
{
$param = 'dbResourceName';
// We shouldn't access _POST and _GET. However, this trait is used
// in various places - and our Request is going to be replaced anyways.
// So, let's not over-engineer things, this is quick & dirty:
if (isset($_POST[$param])) {
$name = $_POST[$param];
} elseif (isset($_GET[$param])) {
$name = $_GET[$param];
} else {
return null;
}
if (in_array($name, $this->listAllowedDbResourceNames())) {
return $name;
} else {
return null;
}
}
protected function getPreferredDbResourceName()
{
return $this->getWindowSessionValue('db_resource');
}
protected function getFirstDbResourceName()
{
$names = $this->listAllowedDbResourceNames();
if (empty($names)) {
return null;
} else {
return array_shift($names);
}
}
protected function listAllowedDbResourceNames()
{
/** @var \Icinga\Authentication\Auth $auth */
$auth = $this->Auth();
$available = $this->listAvailableDbResourceNames();
if ($resourceNames = $auth->getRestrictions(Restriction::DB_RESOURCE)) {
$names = [];
foreach ($resourceNames as $rNames) {
foreach ($this->splitList($rNames) as $name) {
if (array_key_exists($name, $available)) {
$names[] = $name;
}
}
}
return $names;
} else {
return $available;
}
}
/**
* @param string $string
* @return array
*/
protected function splitList($string)
{
return preg_split('/\s*,\s*/', $string, -1, PREG_SPLIT_NO_EMPTY);
}
protected function isMultiDbSetup()
{
return count($this->listAvailableDbResourceNames()) > 1;
}
/**
* @return array
*/
protected function listAvailableDbResourceNames()
{
/** @var \Icinga\Application\Config $config */
$config = $this->Config();
$resources = $config->get('db', 'resources');
if ($resources === null) {
$resource = $config->get('db', 'resource');
if ($resource === null) {
return [];
} else {
return [$resource => $resource];
}
} else {
$resources = $this->splitList($resources);
$resources = array_combine($resources, $resources);
// natsort doesn't work!?
ksort($resources, SORT_NATURAL);
if ($resource = $config->get('db', 'resource')) {
unset($resources[$resource]);
$resources = [$resource => $resource] + $resources;
}
return $resources;
}
}
protected function getWindowSessionValue($value, $default = null)
{
/** @var Window $window */
$window = $this->Window();
/** @var \Icinga\Web\Session\SessionNamespace $session */
$session = $window->getSessionNamespace('director');
return $session->get($value, $default);
}
/**
*
* @return Db
*/
public function db()
{
if ($this->db === null) {
$resourceName = $this->getDbResourceName();
if ($resourceName) {
$this->db = Db::fromResourceName($resourceName);
} elseif ($this instanceof ActionController) {
if ($this->getRequest()->isApiRequest()) {
throw new RuntimeException('Icinga Director is not correctly configured');
} else {
$this->redirectNow('director');
}
} else {
throw new RuntimeException('Icinga Director is not correctly configured');
}
}
return $this->db;
}
}
|
