Файл: vendor/ramsey/uuid/src/Provider/Node/RandomNodeProvider.php
Строк: 69
<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
*/
declare(strict_types=1);
namespace RamseyUuidProviderNode;
use RamseyUuidExceptionRandomSourceException;
use RamseyUuidProviderNodeProviderInterface;
use RamseyUuidTypeHexadecimal;
use Throwable;
use function bin2hex;
use function dechex;
use function hex2bin;
use function hexdec;
use function str_pad;
use function substr;
use const STR_PAD_LEFT;
/**
* RandomNodeProvider generates a random node ID
*
* @link https://www.rfc-editor.org/rfc/rfc9562#section-6.10 RFC 9562, 6.10. UUIDs That Do Not Identify the Host
*/
class RandomNodeProvider implements NodeProviderInterface
{
public function getNode(): Hexadecimal
{
try {
$nodeBytes = random_bytes(6);
} catch (Throwable $exception) {
throw new RandomSourceException($exception->getMessage(), (int) $exception->getCode(), $exception);
}
// Split the node bytes for math on 32-bit systems.
$nodeMsb = substr($nodeBytes, 0, 3);
$nodeLsb = substr($nodeBytes, 3);
// Set the multicast bit; see RFC 9562, section 6.10.
$nodeMsb = hex2bin(str_pad(dechex(hexdec(bin2hex($nodeMsb)) | 0x010000), 6, '0', STR_PAD_LEFT));
return new Hexadecimal(str_pad(bin2hex($nodeMsb . $nodeLsb), 12, '0', STR_PAD_LEFT));
}
}