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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\SAML2\XML; |
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use DOMElement; |
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use SimpleSAML\SAML2\Assert\Assert; |
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use SimpleSAML\SAML2\XML\saml\AbstractBaseID; |
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use SimpleSAML\SAML2\XML\saml\EncryptedID; |
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use SimpleSAML\SAML2\XML\saml\IdentifierInterface; |
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use SimpleSAML\SAML2\XML\saml\NameID; |
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use SimpleSAML\XMLSchema\Exception\TooManyElementsException; |
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use function array_pop; |
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/** |
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* Trait grouping common functionality for elements that can hold identifiers. |
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* |
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* @package simplesamlphp/saml2 |
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*/ |
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trait IdentifierTrait |
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{ |
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/** |
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* The identifier for this element. |
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* |
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* @var \SimpleSAML\SAML2\XML\saml\IdentifierInterface|null |
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*/ |
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protected ?IdentifierInterface $identifier = null; |
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/** |
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* Collect the value of the identifier-property |
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* |
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* @return \SimpleSAML\SAML2\XML\saml\IdentifierInterface|null |
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*/ |
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public function getIdentifier(): ?IdentifierInterface |
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{ |
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return $this->identifier; |
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} |
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/** |
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* Set the value of the identifier-property |
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* |
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* @param \SimpleSAML\SAML2\XML\saml\IdentifierInterface|null $identifier |
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*/ |
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protected function setIdentifier(?IdentifierInterface $identifier): void |
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{ |
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$this->identifier = $identifier; |
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} |
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/** |
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* Retrieve an identifier of any type from XML |
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* |
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* @return \SimpleSAML\SAML2\XML\saml\IdentifierInterface|null |
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* @throws \SimpleSAML\XMLSchema\Exception\TooManyElementsException |
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* if too many child-elements of a type are specified |
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*/ |
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protected static function getIdentifierFromXML(DOMElement $xml): ?IdentifierInterface |
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{ |
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$class = static::NS_PREFIX . ':' . self::getClassName(static::class); |
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$baseId = AbstractBaseID::getChildrenOfClass($xml); |
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$nameId = NameID::getChildrenOfClass($xml); |
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$encryptedId = EncryptedID::getChildrenOfClass($xml); |
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// We accept only one of BaseID, NameID or EncryptedID |
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Assert::maxCount( |
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$baseId, |
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1, |
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'More than one <saml:BaseID> in <' . $class . '>.', |
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TooManyElementsException::class, |
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); |
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Assert::maxCount( |
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$nameId, |
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1, |
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'More than one <saml:NameID> in <' . $class . '>.', |
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TooManyElementsException::class, |
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); |
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Assert::maxCount( |
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$encryptedId, |
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1, |
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'More than one <saml:EncryptedID> in <' . $class . '>.', |
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TooManyElementsException::class, |
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); |
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$identifiers = array_merge($baseId, $nameId, $encryptedId); |
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Assert::maxCount( |
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$identifiers, |
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1, |
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'A <' . $class . '> can contain exactly one of <saml:BaseID>, <saml:NameID> or <saml:EncryptedID>.', |
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TooManyElementsException::class, |
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); |
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/** @psalm-var \SimpleSAML\SAML2\XML\saml\IdentifierInterface|null $identifier */ |
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$identifier = array_pop($identifiers); |
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return $identifier; |
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} |
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} |
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simplesamlphp /
saml2
