<?php

/**

* Session storage in the data store.

*

* @package SimpleSAMLphp

*/

declare(strict_types=1);

namespace SimpleSAML;

use SimpleSAML\Assert\Assert;

use SimpleSAML\Store\StoreInterface;

use function time;

class SessionHandlerStore extends SessionHandlerCookie

{

/**

* The data store we save the session to.

*

* @var \SimpleSAML\Store\StoreInterface

*/

private StoreInterface $store;

/**

* Initialize the session.

*

* @param \SimpleSAML\Store\StoreInterface $store The store to use.

* @throws \Exception

*/

protected function __construct(StoreInterface $store)

{

parent::__construct();

$this->store = $store;

}

/**

* Load a session from the data store.

*

* @param string|null $sessionId The ID of the session we should load, or null to use the default.

*

* @return \SimpleSAML\Session|null The session object, or null if it doesn't exist.

*/

public function loadSession(?string $sessionId): ?Session

{

if ($sessionId === null) {

$sessionId = $this->getCookieSessionId();

if ($sessionId === null) {

// no session cookie, nothing to load

return null;

}

}

$session = $this->store->get('session', $sessionId);

if ($session !== null) {

Assert::isInstanceOf($session, Session::class);

return $session;

}

return null;

}

/**

* Save a session to the data store.

*

* @param \SimpleSAML\Session $session The session object we should save.

* @throws \Exception

*/

public function saveSession(Session $session): void

{

if ($session->isTransient()) {

// transient session, nothing to save

return;

}

/** @var string $sessionId */

$sessionId = $session->getSessionId();

$config = Configuration::getInstance();

$sessionDuration = $config->getOptionalInteger('session.duration', 8 * 60 * 60);

$expire = time() + $sessionDuration;

$this->store->set('session', $sessionId, $session, $expire);

}

}