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<?php |
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declare(strict_types = 1); |
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namespace Sop\X509\Certificate\Extension; |
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use Sop\ASN1\Element; |
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use Sop\ASN1\Type\Constructed\Sequence; |
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use Sop\ASN1\Type\Tagged\ImplicitlyTaggedType; |
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use Sop\ASN1\Type\UnspecifiedType; |
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use Sop\X509\Certificate\Extension\NameConstraints\GeneralSubtrees; |
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/** |
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* Implements 'Name Constraints' certificate extension. |
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* |
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* @see https://tools.ietf.org/html/rfc5280#section-4.2.1.10 |
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*/ |
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class NameConstraintsExtension extends Extension |
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{ |
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/** |
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* Permitted subtrees. |
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* |
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* @var null|GeneralSubtrees |
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*/ |
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protected $_permitted; |
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/** |
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* Excluded subtrees. |
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* |
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* @var null|GeneralSubtrees |
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*/ |
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protected $_excluded; |
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/** |
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* Constructor. |
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* |
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* @param bool $critical |
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* @param GeneralSubtrees $permitted |
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* @param GeneralSubtrees $excluded |
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*/ |
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public function __construct(bool $critical, ?GeneralSubtrees $permitted = null, |
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?GeneralSubtrees $excluded = null) |
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{ |
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parent::__construct(self::OID_NAME_CONSTRAINTS, $critical); |
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$this->_permitted = $permitted; |
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$this->_excluded = $excluded; |
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} |
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/** |
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* Whether permitted subtrees are present. |
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* |
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* @return bool |
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*/ |
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public function hasPermittedSubtrees(): bool |
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{ |
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return isset($this->_permitted); |
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} |
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/** |
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* Get permitted subtrees. |
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* |
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* @throws \LogicException If not set |
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* |
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* @return GeneralSubtrees |
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*/ |
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public function permittedSubtrees(): GeneralSubtrees |
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{ |
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if (!$this->hasPermittedSubtrees()) { |
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throw new \LogicException('No permitted subtrees.'); |
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} |
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return $this->_permitted; |
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} |
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/** |
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* Whether excluded subtrees are present. |
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* |
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* @return bool |
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*/ |
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public function hasExcludedSubtrees(): bool |
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{ |
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return isset($this->_excluded); |
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} |
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/** |
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* Get excluded subtrees. |
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* |
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* @throws \LogicException If not set |
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* |
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* @return GeneralSubtrees |
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*/ |
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public function excludedSubtrees(): GeneralSubtrees |
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{ |
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if (!$this->hasExcludedSubtrees()) { |
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throw new \LogicException('No excluded subtrees.'); |
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} |
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return $this->_excluded; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected static function _fromDER(string $data, bool $critical): Extension |
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{ |
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$seq = UnspecifiedType::fromDER($data)->asSequence(); |
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$permitted = null; |
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$excluded = null; |
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if ($seq->hasTagged(0)) { |
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$permitted = GeneralSubtrees::fromASN1( |
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$seq->getTagged(0)->asImplicit(Element::TYPE_SEQUENCE)->asSequence()); |
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} |
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if ($seq->hasTagged(1)) { |
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$excluded = GeneralSubtrees::fromASN1( |
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$seq->getTagged(1)->asImplicit(Element::TYPE_SEQUENCE)->asSequence()); |
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} |
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return new self($critical, $permitted, $excluded); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function _valueASN1(): Element |
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{ |
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$elements = []; |
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if (isset($this->_permitted)) { |
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$elements[] = new ImplicitlyTaggedType(0, $this->_permitted->toASN1()); |
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} |
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if (isset($this->_excluded)) { |
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$elements[] = new ImplicitlyTaggedType(1, $this->_excluded->toASN1()); |
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} |
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return new Sequence(...$elements); |
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} |
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} |
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sop /
x509
