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<?php |
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declare(strict_types = 1); |
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namespace Sop\X509\Certificate; |
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use Sop\ASN1\Element; |
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use Sop\ASN1\Type\Primitive\GeneralizedTime; |
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use Sop\ASN1\Type\Primitive\UTCTime; |
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use Sop\ASN1\Type\TimeType; |
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use Sop\X509\Feature\DateTimeHelper; |
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/** |
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* Implements *Time* ASN.1 type. |
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* |
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* @see https://tools.ietf.org/html/rfc5280#section-4.1 |
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*/ |
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class Time |
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{ |
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use DateTimeHelper; |
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/** |
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* Datetime. |
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* |
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* @var \DateTimeImmutable |
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*/ |
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protected $_dt; |
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/** |
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* Time ASN.1 type tag. |
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* |
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* @var int |
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*/ |
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protected $_type; |
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/** |
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* Constructor. |
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* |
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* @param \DateTimeImmutable $dt |
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*/ |
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public function __construct(\DateTimeImmutable $dt) |
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{ |
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$this->_dt = $dt; |
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$this->_type = self::_determineType($dt); |
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} |
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/** |
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* Initialize from ASN.1. |
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* |
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* @param TimeType $el |
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* |
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* @return self |
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*/ |
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public static function fromASN1(TimeType $el): self |
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{ |
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$obj = new self($el->dateTime()); |
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$obj->_type = $el->tag(); |
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return $obj; |
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} |
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/** |
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* Initialize from date string. |
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* |
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* @param null|string $time |
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* @param null|string $tz |
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* |
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* @return self |
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*/ |
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public static function fromString(?string $time, ?string $tz = null): self |
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{ |
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return new self(self::_createDateTime($time, $tz)); |
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} |
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/** |
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* Get datetime. |
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* |
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* @return \DateTimeImmutable |
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*/ |
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public function dateTime(): \DateTimeImmutable |
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{ |
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return $this->_dt; |
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} |
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/** |
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* Generate ASN.1. |
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* |
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* @throws \UnexpectedValueException |
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* |
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* @return TimeType |
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*/ |
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public function toASN1(): TimeType |
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{ |
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$dt = $this->_dt; |
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switch ($this->_type) { |
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case Element::TYPE_UTC_TIME: |
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return new UTCTime($dt); |
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case Element::TYPE_GENERALIZED_TIME: |
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// GeneralizedTime must not contain fractional seconds |
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// (rfc5280 4.1.2.5.2) |
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if (0 !== intval($dt->format('u'))) { |
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// remove fractional seconds (round down) |
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$dt = self::_roundDownFractionalSeconds($dt); |
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} |
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return new GeneralizedTime($dt); |
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} |
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throw new \UnexpectedValueException( |
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'Time type ' . Element::tagToName($this->_type) . ' not supported.'); |
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} |
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/** |
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* Determine whether to use UTCTime or GeneralizedTime ASN.1 type. |
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* |
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* @param \DateTimeImmutable $dt |
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* |
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* @return int Type tag |
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*/ |
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protected static function _determineType(\DateTimeImmutable $dt): int |
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{ |
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if ($dt->format('Y') >= 2050) { |
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return Element::TYPE_GENERALIZED_TIME; |
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} |
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return Element::TYPE_UTC_TIME; |
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} |
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} |
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sop /
x509
