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<?php |
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declare(strict_types = 1); |
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namespace Sop\ASN1\Type\Primitive; |
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use Sop\ASN1\Component\Identifier; |
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use Sop\ASN1\Component\Length; |
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use Sop\ASN1\Exception\DecodeException; |
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use Sop\ASN1\Feature\ElementBase; |
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use Sop\ASN1\Type\BaseTime; |
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use Sop\ASN1\Type\PrimitiveType; |
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use Sop\ASN1\Type\UniversalClass; |
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/** |
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* Implements *UTCTime* type. |
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*/ |
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class UTCTime extends BaseTime |
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{ |
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use UniversalClass; |
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use PrimitiveType; |
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/** |
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* Regular expression to parse date. |
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* |
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* DER restricts format to UTC timezone (Z suffix). |
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* |
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* @var string |
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*/ |
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const REGEX = '#^' . |
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'(\d\d)' . // YY |
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'(\d\d)' . // MM |
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'(\d\d)' . // DD |
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'(\d\d)' . // hh |
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'(\d\d)' . // mm |
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'(\d\d)' . // ss |
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'Z' . // TZ |
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'$#'; |
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/** |
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* Constructor. |
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*/ |
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public function __construct(\DateTimeImmutable $dt) |
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{ |
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$this->_typeTag = self::TYPE_UTC_TIME; |
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parent::__construct($dt); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function _encodedContentDER(): string |
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{ |
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$dt = $this->_dateTime->setTimezone(self::_createTimeZone(self::TZ_UTC)); |
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return $dt->format('ymdHis\\Z'); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected static function _decodeFromDER(Identifier $identifier, |
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string $data, int &$offset): ElementBase |
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{ |
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$idx = $offset; |
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$length = Length::expectFromDER($data, $idx)->intLength(); |
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$str = substr($data, $idx, $length); |
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$idx += $length; |
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/** @var string[] $match */ |
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if (!preg_match(self::REGEX, $str, $match)) { |
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throw new DecodeException('Invalid UTCTime format.'); |
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} |
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[, $year, $month, $day, $hour, $minute, $second] = $match; |
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$time = $year . $month . $day . $hour . $minute . $second . self::TZ_UTC; |
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$dt = \DateTimeImmutable::createFromFormat('!ymdHisT', $time, |
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self::_createTimeZone(self::TZ_UTC)); |
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if (!$dt) { |
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throw new DecodeException('Failed to decode UTCTime: ' . |
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self::_getLastDateTimeImmutableErrorsStr()); |
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} |
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$offset = $idx; |
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return new self($dt); |
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} |
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} |
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sop /
asn1
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