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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\SAML2\XML\md; |
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use DOMElement; |
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use SimpleSAML\Assert\Assert; |
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use SimpleSAML\XML\Exception\InvalidDOMElementException; |
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use SimpleSAML\XML\Exception\MissingElementException; |
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use SimpleSAML\XML\Exception\TooManyElementsException; |
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use SimpleSAML\XMLSecurity\XML\ds\KeyInfo; |
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/** |
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* Class representing a KeyDescriptor element. |
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* |
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* @package simplesamlphp/saml2 |
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*/ |
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final class KeyDescriptor extends AbstractMdElement |
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{ |
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/** |
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* KeyDescriptor constructor. |
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* |
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* @param \SimpleSAML\XMLSecurity\XML\ds\KeyInfo $keyInfo |
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* @param string|null $use |
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* @param \SimpleSAML\SAML2\XML\md\EncryptionMethod[] $encryptionMethod |
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*/ |
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public function __construct( |
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protected KeyInfo $keyInfo, |
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protected ?string $use = null, |
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protected array $encryptionMethod = [] |
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) { |
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Assert::nullOrOneOf( |
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$use, |
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['encryption', 'signing'], |
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'The "use" attribute of a KeyDescriptor can only be "encryption" or "signing".', |
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); |
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Assert::allIsInstanceOf($encryptionMethod, EncryptionMethod::class); |
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} |
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/** |
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* Collect the value of the use property. |
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* |
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* @return string|null |
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*/ |
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public function getUse(): ?string |
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{ |
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return $this->use; |
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} |
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/** |
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* Collect the value of the KeyInfo property. |
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* |
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* @return \SimpleSAML\XMLSecurity\XML\ds\KeyInfo |
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*/ |
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public function getKeyInfo(): KeyInfo |
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{ |
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return $this->keyInfo; |
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} |
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/** |
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* Collect the value of the EncryptionMethod property. |
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* |
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* @return \SimpleSAML\SAML2\XML\md\EncryptionMethod[] |
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*/ |
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public function getEncryptionMethod(): array |
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{ |
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return $this->encryptionMethod; |
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} |
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/** |
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* Initialize an KeyDescriptor. |
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* |
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* @param \DOMElement $xml The XML element we should load. |
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* @return \SimpleSAML\SAML2\XML\md\KeyDescriptor |
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* |
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* @throws \SimpleSAML\XML\Exception\InvalidDOMElementException |
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* if the qualified name of the supplied element is wrong |
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* @throws \SimpleSAML\XML\Exception\MissingElementException |
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* if one of the mandatory child-elements is missing |
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* @throws \SimpleSAML\XML\Exception\TooManyElementsException |
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* if too many child-elements of a type are specified |
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*/ |
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public static function fromXML(DOMElement $xml): static |
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{ |
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Assert::same($xml->localName, 'KeyDescriptor', InvalidDOMElementException::class); |
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Assert::same($xml->namespaceURI, KeyDescriptor::NS, InvalidDOMElementException::class); |
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$keyInfoElements = KeyInfo::getChildrenOfClass($xml); |
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Assert::minCount( |
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$keyInfoElements, |
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1, |
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'No ds:KeyInfo in the KeyDescriptor.', |
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MissingElementException::class, |
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); |
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Assert::maxCount( |
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$keyInfoElements, |
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1, |
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'More than one ds:KeyInfo in the KeyDescriptor.', |
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TooManyElementsException::class, |
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); |
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return new static( |
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$keyInfoElements[0], |
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self::getAttribute($xml, 'use', null), |
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EncryptionMethod::getChildrenOfClass($xml), |
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); |
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} |
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/** |
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* Convert this KeyDescriptor to XML. |
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* |
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* @param \DOMElement|null $parent The element we should append this KeyDescriptor to. |
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* @return \DOMElement |
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*/ |
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public function toXML(DOMElement $parent = null): DOMElement |
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{ |
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$e = $this->instantiateParentElement($parent); |
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if ($this->getUse() !== null) { |
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$e->setAttribute('use', $this->getUse()); |
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} |
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$this->getKeyInfo()->toXML($e); |
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foreach ($this->getEncryptionMethod() as $em) { |
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$em->toXML($e); |
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} |
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return $e; |
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} |
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} |
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simplesamlphp /
saml2
