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<?php |
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namespace X509\Certificate\Extension\CertificatePolicy; |
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use ASN1\Element; |
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use ASN1\Type\Constructed\Sequence; |
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use ASN1\Type\Primitive\ObjectIdentifier; |
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use ASN1\Type\UnspecifiedType; |
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/** |
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* Base class for <i>PolicyQualifierInfo</i> ASN.1 types used by |
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* 'Certificate Policies' certificate extension. |
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* |
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* @link https://tools.ietf.org/html/rfc5280#section-4.2.1.4 |
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*/ |
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abstract class PolicyQualifierInfo |
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{ |
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/** |
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* OID for the CPS Pointer qualifier. |
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* |
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* @var string |
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*/ |
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const OID_CPS = "1.3.6.1.5.5.7.2.1"; |
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/** |
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* OID for the user notice qualifier. |
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* |
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* @var string |
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*/ |
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const OID_UNOTICE = "1.3.6.1.5.5.7.2.2"; |
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/** |
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* Qualifier identifier. |
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* |
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* @var string $_oid |
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*/ |
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protected $_oid; |
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/** |
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* Generate ASN.1 for the 'qualifier' field. |
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* |
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* @return Element |
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*/ |
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abstract protected function _qualifierASN1(); |
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/** |
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* Initialize from qualifier ASN.1 element. |
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* |
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* @param UnspecifiedType $el |
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* @return self |
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*/ |
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public static function fromQualifierASN1(UnspecifiedType $el) { |
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throw new \BadMethodCallException( |
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__FUNCTION__ . " must be implemented in the derived class."); |
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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 Sequence $seq |
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* @throws \UnexpectedValueException |
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* @return self |
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*/ |
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public static function fromASN1(Sequence $seq) { |
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$oid = $seq->at(0) |
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->asObjectIdentifier() |
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->oid(); |
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switch ($oid) { |
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case self::OID_CPS: |
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return CPSQualifier::fromQualifierASN1($seq->at(1)); |
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case self::OID_UNOTICE: |
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return UserNoticeQualifier::fromQualifierASN1($seq->at(1)); |
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} |
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throw new \UnexpectedValueException("Qualifier $oid not supported."); |
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} |
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/** |
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* Get qualifier identifier. |
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* |
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* @return string |
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*/ |
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public function oid() { |
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return $this->_oid; |
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} |
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/** |
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* Generate ASN.1 structure. |
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* |
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* @return Sequence |
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*/ |
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public function toASN1() { |
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return new Sequence(new ObjectIdentifier($this->_oid), |
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$this->_qualifierASN1()); |
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} |
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} |
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sop /
x509
