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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpFoundation\Session\Storage;
use Symfony\Component\HttpFoundation\Session\SessionBagInterface;
/**
* Metadata container.
*
* Adds metadata to the session.
*
* @author Drak <drak@zikula.org>
*/
class MetadataBag implements SessionBagInterface
{
public const CREATED = 'c';
public const UPDATED = 'u';
public const LIFETIME = 'l';
private string $name = '__metadata';
private string $storageKey;
/**
* @var array
*/
protected $meta = [self::CREATED => 0, self::UPDATED => 0, self::LIFETIME => 0];
/**
* Unix timestamp.
*/
private int $lastUsed;
private int $updateThreshold;
/**
* @param string $storageKey The key used to store bag in the session
* @param int $updateThreshold The time to wait between two UPDATED updates
*/
public function __construct(string $storageKey = '_sf2_meta', int $updateThreshold = 0)
{
$this->storageKey = $storageKey;
$this->updateThreshold = $updateThreshold;
}
public function initialize(array &$array)
{
$this->meta = &$array;
if (isset($array[self::CREATED])) {
$this->lastUsed = $this->meta[self::UPDATED];
$timeStamp = time();
if ($timeStamp - $array[self::UPDATED] >= $this->updateThreshold) {
$this->meta[self::UPDATED] = $timeStamp;
}
} else {
$this->stampCreated();
}
}
/**
* Gets the lifetime that the session cookie was set with.
*/
public function getLifetime(): int
{
return $this->meta[self::LIFETIME];
}
/**
* Stamps a new session's metadata.
*
* @param int $lifetime Sets the cookie lifetime for the session cookie. A null value
* will leave the system settings unchanged, 0 sets the cookie
* to expire with browser session. Time is in seconds, and is
* not a Unix timestamp.
*/
public function stampNew(int $lifetime = null)
{
$this->stampCreated($lifetime);
}
public function getStorageKey(): string
{
return $this->storageKey;
}
/**
* Gets the created timestamp metadata.
*
* @return int Unix timestamp
*/
public function getCreated(): int
{
return $this->meta[self::CREATED];
}
/**
* Gets the last used metadata.
*
* @return int Unix timestamp
*/
public function getLastUsed(): int
{
return $this->lastUsed;
}
public function clear(): mixed
{
// nothing to do
return null;
}
public function getName(): string
{
return $this->name;
}
/**
* Sets name.
*/
public function setName(string $name)
{
$this->name = $name;
}
private function stampCreated(int $lifetime = null): void
{
$timeStamp = time();
$this->meta[self::CREATED] = $this->meta[self::UPDATED] = $this->lastUsed = $timeStamp;
$this->meta[self::LIFETIME] = $lifetime ?? (int) \ini_get('session.cookie_lifetime');
}
}
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