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Diffstat (limited to '')
-rw-r--r-- | vendor/ramsey/uuid/src/Provider/Node/RandomNodeProvider.php | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/vendor/ramsey/uuid/src/Provider/Node/RandomNodeProvider.php b/vendor/ramsey/uuid/src/Provider/Node/RandomNodeProvider.php new file mode 100644 index 0000000..7614136 --- /dev/null +++ b/vendor/ramsey/uuid/src/Provider/Node/RandomNodeProvider.php @@ -0,0 +1,69 @@ +<?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 Ramsey\Uuid\Provider\Node; + +use Ramsey\Uuid\Exception\RandomSourceException; +use Ramsey\Uuid\Provider\NodeProviderInterface; +use Ramsey\Uuid\Type\Hexadecimal; +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 http://tools.ietf.org/html/rfc4122#section-4.5 RFC 4122, ยง 4.5: Node IDs 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 4122, section 4.5. + $nodeMsb = hex2bin( + str_pad( + dechex(hexdec(bin2hex($nodeMsb)) | 0x010000), + 6, + '0', + STR_PAD_LEFT + ) + ); + + // Recombine the node bytes. + $node = $nodeMsb . $nodeLsb; + + return new Hexadecimal(str_pad(bin2hex($node), 12, '0', STR_PAD_LEFT)); + } +} |