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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\XMLSecurity\XML\ds; |
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use DOMElement; |
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use SimpleSAML\Assert\Assert; |
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use SimpleSAML\XML\Chunk; |
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use SimpleSAML\XML\Exception\InvalidDOMElementException; |
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use SimpleSAML\XML\Exception\SchemaViolationException; |
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use SimpleSAML\XML\ExtendableElementTrait; |
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use SimpleSAML\XMLSecurity\Constants as C; |
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use SimpleSAML\XMLSecurity\Exception\InvalidArgumentException; |
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/** |
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* Class representing a ds:DigestMethod element. |
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* |
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* @package simplesamlphp/xml-security |
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*/ |
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final class DigestMethod extends AbstractDsElement |
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{ |
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use ExtendableElementTrait; |
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public const NAMESPACE = C::XS_ANY_NS_OTHER; |
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/** |
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* The algorithm. |
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* |
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* @var string |
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*/ |
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protected string $Algorithm; |
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/** |
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* Initialize a DigestMethod element. |
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* |
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* @param string $algorithm |
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* @param \SimpleSAML\XML\Chunk[] $elements |
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*/ |
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public function __construct(string $algorithm, array $elements = []) |
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{ |
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$this->setAlgorithm($algorithm); |
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$this->setElements($elements); |
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} |
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/** |
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* Collect the value of the Algorithm-property |
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* |
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* @return string |
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*/ |
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public function getAlgorithm(): string |
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{ |
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return $this->Algorithm; |
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} |
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/** |
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* Set the value of the Algorithm-property |
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* |
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* @param string $algorithm |
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*/ |
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private function setAlgorithm(string $algorithm): void |
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{ |
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Assert::validURI($algorithm, SchemaViolationException::class); |
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Assert::oneOf( |
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$algorithm, |
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array_keys(C::$DIGEST_ALGORITHMS), |
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'Invalid digest method', |
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InvalidArgumentException::class, |
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); |
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$this->Algorithm = $algorithm; |
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} |
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/** |
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* Convert XML into a DigestMethod |
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* |
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* @param \DOMElement $xml The XML element we should load |
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* @return static |
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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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*/ |
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public static function fromXML(DOMElement $xml): static |
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{ |
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Assert::same($xml->localName, 'DigestMethod', InvalidDOMElementException::class); |
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Assert::same($xml->namespaceURI, DigestMethod::NS, InvalidDOMElementException::class); |
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/** @psalm-var string $Algorithm */ |
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$Algorithm = DigestMethod::getAttribute($xml, 'Algorithm'); |
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$elements = []; |
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foreach ($xml->childNodes as $elt) { |
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if (!($elt instanceof DOMElement)) { |
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continue; |
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} |
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$elements[] = new Chunk($elt); |
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} |
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return new static($Algorithm, $elements); |
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} |
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/** |
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* Convert this DigestMethod element to XML. |
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* |
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* @param \DOMElement|null $parent The element we should append this DigestMethod element 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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$e->setAttribute('Algorithm', $this->getAlgorithm()); |
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/** @psalm-var \SimpleSAML\XML\SerializableElementInterface $elt */ |
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foreach ($this->elements as $elt) { |
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if (!$elt->isEmptyElement()) { |
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$elt->toXML($e); |
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} |
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} |
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return $e; |
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} |
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} |
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