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<?php
namespace Bitrix\Main\Session;
use Bitrix\Main\NotSupportedException;
use Bitrix\Main\Security\Random;
use Bitrix\Main\Session\Handlers\CookieSessionHandler;
class KernelSession implements SessionInterface, \ArrayAccess
{
use ArrayAccessWithReferences;
private const COOKIE_NAME = 'kernel';
/** @var bool */
protected $started;
/** @var \SessionHandlerInterface */
protected $sessionHandler;
/** @var int */
private $lifetime = 0;
/** @var string */
private $id;
/** @var string */
private $hash;
public function __construct(int $lifetime = 0)
{
$this->lifetime = $lifetime;
}
public function isActive(): bool
{
return $this->isStarted();
}
public function isAccessible(): bool
{
return true;
}
public function getId(): string
{
return $this->id;
}
public function setId($id)
{
throw new NotSupportedException();
}
public function getName(): string
{
throw new NotSupportedException();
}
public function setName($name)
{
throw new NotSupportedException();
}
/**
* @return \SessionHandlerInterface|CookieSessionHandler
*/
public function getSessionHandler(): \SessionHandlerInterface
{
return $this->sessionHandler;
}
final protected function hashData(string $data): string
{
return hash('sha512', $data);
}
public function start(): bool
{
if ($this->isStarted())
{
return true;
}
$this->started = true;
$this->sessionHandler = new CookieSessionHandler($this->lifetime);
$data = $this->getSessionHandler()->read(self::COOKIE_NAME);
$this->hash = $this->hashData($data);
$this->sessionData = unserialize($data, ['allowed_classes' => false]) ?: [];
if (!isset($this->sessionData['_id']))
{
$this->sessionData['_id'] = Random::getString(32, true);
}
$this->id = $this->sessionData['_id'];
return true;
}
public function regenerateId(): bool
{
return true;
}
public function destroy()
{
if ($this->isActive())
{
$this->clear();
}
}
public function save()
{
$this->refineReferencesBeforeSave();
$data = serialize($this->sessionData);
if ($this->hashData($data) !== $this->hash)
{
$this->getSessionHandler()->write(self::COOKIE_NAME, $data);
}
$this->started = false;
}
public function clear()
{
$this->sessionData = [];
$this->nullPointers = [];
}
public function isStarted()
{
return (bool)$this->started;
}
}