home/alospiesjs/www/apis/youtube/vendor/ramsey/uuid/src/Rfc4122/UuidV2.php000060400000012202151162404320022317 0ustar00 * @license http://opensource.org/licenses/MIT MIT */ declare(strict_types=1); namespace Ramsey\Uuid\Rfc4122; use DateTimeImmutable; use DateTimeInterface; use Ramsey\Uuid\Codec\CodecInterface; use Ramsey\Uuid\Converter\NumberConverterInterface; use Ramsey\Uuid\Converter\TimeConverterInterface; use Ramsey\Uuid\Exception\DateTimeException; use Ramsey\Uuid\Exception\InvalidArgumentException; use Ramsey\Uuid\Rfc4122\FieldsInterface as Rfc4122FieldsInterface; use Ramsey\Uuid\Type\Integer as IntegerObject; use Ramsey\Uuid\Uuid; use Throwable; use function hexdec; use function str_pad; use const STR_PAD_LEFT; /** * DCE Security version, or version 2, UUIDs include local domain identifier, * local ID for the specified domain, and node values that are combined into a * 128-bit unsigned integer * * @link https://publications.opengroup.org/c311 DCE 1.1: Authentication and Security Services * @link https://publications.opengroup.org/c706 DCE 1.1: Remote Procedure Call * @link https://pubs.opengroup.org/onlinepubs/9696989899/chap5.htm#tagcjh_08_02_01_01 DCE 1.1: Auth & Sec, §5.2.1.1 * @link https://pubs.opengroup.org/onlinepubs/9696989899/chap11.htm#tagcjh_14_05_01_01 DCE 1.1: Auth & Sec, §11.5.1.1 * @link https://pubs.opengroup.org/onlinepubs/9629399/apdxa.htm DCE 1.1: RPC, Appendix A * @link https://github.com/google/uuid Go package for UUIDs (includes DCE implementation) * * @psalm-immutable */ final class UuidV2 extends Uuid implements UuidInterface { /** * Creates a version 2 (DCE Security) UUID * * @param Rfc4122FieldsInterface $fields The fields from which to construct a UUID * @param NumberConverterInterface $numberConverter The number converter to use * for converting hex values to/from integers * @param CodecInterface $codec The codec to use when encoding or decoding * UUID strings * @param TimeConverterInterface $timeConverter The time converter to use * for converting timestamps extracted from a UUID to unix timestamps */ public function __construct( Rfc4122FieldsInterface $fields, NumberConverterInterface $numberConverter, CodecInterface $codec, TimeConverterInterface $timeConverter ) { if ($fields->getVersion() !== Uuid::UUID_TYPE_DCE_SECURITY) { throw new InvalidArgumentException( 'Fields used to create a UuidV2 must represent a ' . 'version 2 (DCE Security) UUID' ); } parent::__construct($fields, $numberConverter, $codec, $timeConverter); } /** * Returns a DateTimeInterface object representing the timestamp associated * with the UUID * * It is important to note that a version 2 UUID suffers from some loss of * fidelity of the timestamp, due to replacing the time_low field with the * local identifier. When constructing the timestamp value for date * purposes, we replace the local identifier bits with zeros. As a result, * the timestamp can be off by a range of 0 to 429.4967295 seconds (or 7 * minutes, 9 seconds, and 496730 microseconds). * * Astute observers might note this value directly corresponds to 2^32 - 1, * or 0xffffffff. The local identifier is 32-bits, and we have set each of * these bits to 0, so the maximum range of timestamp drift is 0x00000000 * to 0xffffffff (counted in 100-nanosecond intervals). * * @return DateTimeImmutable A PHP DateTimeImmutable instance representing * the timestamp of a version 2 UUID */ public function getDateTime(): DateTimeInterface { $time = $this->timeConverter->convertTime($this->fields->getTimestamp()); try { return new DateTimeImmutable( '@' . $time->getSeconds()->toString() . '.' . str_pad($time->getMicroseconds()->toString(), 6, '0', STR_PAD_LEFT) ); } catch (Throwable $e) { throw new DateTimeException($e->getMessage(), (int) $e->getCode(), $e); } } /** * Returns the local domain used to create this version 2 UUID */ public function getLocalDomain(): int { /** @var Rfc4122FieldsInterface $fields */ $fields = $this->getFields(); return (int) hexdec($fields->getClockSeqLow()->toString()); } /** * Returns the string name of the local domain */ public function getLocalDomainName(): string { return Uuid::DCE_DOMAIN_NAMES[$this->getLocalDomain()]; } /** * Returns the local identifier for the domain used to create this version 2 UUID */ public function getLocalIdentifier(): IntegerObject { /** @var Rfc4122FieldsInterface $fields */ $fields = $this->getFields(); return new IntegerObject( $this->numberConverter->fromHex($fields->getTimeLow()->toString()) ); } }