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<?php |
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declare(strict_types = 1); |
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namespace X509\Certificate\Extension; |
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use ASN1\Type\UnspecifiedType; |
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use ASN1\Type\Constructed\Sequence; |
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use X509\Certificate\Extension\CertificatePolicy\PolicyInformation; |
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use X509\Certificate\Extension\PolicyMappings\PolicyMapping; |
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/** |
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* Implements 'Policy Mappings' certificate extension. |
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* |
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* @link https://tools.ietf.org/html/rfc5280#section-4.2.1.5 |
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*/ |
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class PolicyMappingsExtension extends Extension implements |
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\Countable, |
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\IteratorAggregate |
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{ |
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/** |
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* Policy mappings. |
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* |
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* @var PolicyMapping[] $_mappings |
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*/ |
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protected $_mappings; |
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/** |
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* Constructor. |
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* |
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* @param bool $critical |
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* @param PolicyMapping ...$mappings One or more PolicyMapping objects |
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*/ |
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public function __construct(bool $critical, PolicyMapping ...$mappings) |
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{ |
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parent::__construct(self::OID_POLICY_MAPPINGS, $critical); |
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$this->_mappings = $mappings; |
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} |
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/** |
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* |
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* {@inheritdoc} |
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* @return self |
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*/ |
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protected static function _fromDER(string $data, bool $critical): self |
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{ |
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$mappings = array_map( |
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function (UnspecifiedType $el) { |
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return PolicyMapping::fromASN1($el->asSequence()); |
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}, UnspecifiedType::fromDER($data)->asSequence()->elements()); |
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if (!count($mappings)) { |
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throw new \UnexpectedValueException( |
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"PolicyMappings must have at least one mapping."); |
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} |
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return new self($critical, ...$mappings); |
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} |
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/** |
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* |
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* {@inheritdoc} |
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* @return Sequence |
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*/ |
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protected function _valueASN1(): Sequence |
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{ |
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if (!count($this->_mappings)) { |
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throw new \LogicException("No mappings."); |
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} |
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$elements = array_map( |
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function (PolicyMapping $mapping) { |
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return $mapping->toASN1(); |
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}, $this->_mappings); |
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return new Sequence(...$elements); |
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} |
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/** |
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* Get all mappings. |
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* |
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* @return PolicyMapping[] |
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*/ |
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public function mappings(): array |
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{ |
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return $this->_mappings; |
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} |
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/** |
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* Get mappings flattened into a single array of arrays of subject domains |
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* keyed by issuer domain. |
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* |
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* Eg. if policy mappings contains multiple mappings with the same issuer |
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* domain policy, their corresponding subject domain policies are placed |
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* under the same key. |
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* |
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* @return (string[])[] |
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*/ |
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public function flattenedMappings(): array |
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{ |
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$mappings = array(); |
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foreach ($this->_mappings as $mapping) { |
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$idp = $mapping->issuerDomainPolicy(); |
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if (!isset($mappings[$idp])) { |
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$mappings[$idp] = array(); |
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} |
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array_push($mappings[$idp], $mapping->subjectDomainPolicy()); |
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} |
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return $mappings; |
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} |
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/** |
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* Get all subject domain policy OIDs that are mapped to given issuer |
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* domain policy OID. |
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* |
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* @param string $oid Issuer domain policy |
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* @return string[] List of OIDs in dotted format |
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*/ |
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public function issuerMappings(string $oid): array |
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{ |
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$oids = array(); |
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foreach ($this->_mappings as $mapping) { |
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if ($mapping->issuerDomainPolicy() == $oid) { |
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$oids[] = $mapping->subjectDomainPolicy(); |
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} |
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} |
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return $oids; |
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} |
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/** |
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* Get all mapped issuer domain policy OIDs. |
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* |
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* @return string[] |
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*/ |
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public function issuerDomainPolicies(): array |
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{ |
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$idps = array_map( |
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function (PolicyMapping $mapping) { |
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return $mapping->issuerDomainPolicy(); |
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}, $this->_mappings); |
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return array_values(array_unique($idps)); |
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} |
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/** |
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* Check whether policy mappings have anyPolicy mapped. |
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* |
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* RFC 5280 section 4.2.1.5 states that "Policies MUST NOT be mapped either |
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* to or from the special value anyPolicy". |
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* |
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* @return bool |
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*/ |
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public function hasAnyPolicyMapping(): bool |
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{ |
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foreach ($this->_mappings as $mapping) { |
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if ($mapping->issuerDomainPolicy() == |
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PolicyInformation::OID_ANY_POLICY) { |
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return true; |
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} |
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if ($mapping->subjectDomainPolicy() == |
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PolicyInformation::OID_ANY_POLICY) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Get the number of mappings. |
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* |
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* @see \Countable::count() |
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* @return int |
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*/ |
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public function count(): int |
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{ |
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return count($this->_mappings); |
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} |
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/** |
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* Get iterator for policy mappings. |
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* |
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* @see \IteratorAggregate::getIterator() |
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* @return \ArrayIterator |
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*/ |
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public function getIterator(): \ArrayIterator |
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{ |
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return new \ArrayIterator($this->_mappings); |
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} |
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} |
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|
et-nik /
x509
