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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\SAML2\Assertion\Transformer; |
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use Exception; |
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use Psr\Log\LoggerInterface; |
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use SimpleSAML\SAML2\Assert\Assert; |
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use SimpleSAML\SAML2\Assertion\Exception\NotDecryptedException; |
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use SimpleSAML\SAML2\Certificate\PrivateKeyLoader; |
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use SimpleSAML\SAML2\Configuration\IdentityProvider; |
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use SimpleSAML\SAML2\Configuration\IdentityProviderAware; |
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use SimpleSAML\SAML2\Configuration\ServiceProvider; |
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use SimpleSAML\SAML2\Configuration\ServiceProviderAware; |
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use SimpleSAML\SAML2\XML\saml\Assertion; |
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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\Subject; |
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use function get_class; |
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use function sprintf; |
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final class NameIdDecryptionTransformer implements |
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TransformerInterface, |
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IdentityProviderAware, |
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ServiceProviderAware |
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{ |
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/** |
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* @var \SimpleSAML\SAML2\Configuration\IdentityProvider |
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*/ |
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private IdentityProvider $identityProvider; |
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/** |
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* @var \SimpleSAML\SAML2\Configuration\ServiceProvider |
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*/ |
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private ServiceProvider $serviceProvider; |
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/** |
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* Constructor for NameIdDecryptionTransformer |
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* |
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* @param \Psr\Log\LoggerInterface $logger |
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* @param \SimpleSAML\SAML2\Certificate\PrivateKeyLoader $privateKeyLoader |
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*/ |
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public function __construct( |
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private LoggerInterface $logger, |
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private PrivateKeyLoader $privateKeyLoader, |
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) { |
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$this->logger = $logger; |
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$this->privateKeyLoader = $privateKeyLoader; |
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} |
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/** |
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* @param \SimpleSAML\SAML2\XML\saml\Assertion $assertion |
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* @throws \Exception |
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* @return \SimpleSAML\SAML2\XML\saml\Assertion |
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*/ |
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public function transform(Assertion $assertion): Assertion |
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{ |
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$subject = $assertion->getSubject(); |
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if ($subject === null) { |
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return $assertion; |
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} |
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$identifier = $subject->getIdentifier(); |
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if (!($identifier instanceof EncryptedID)) { |
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return $assertion; |
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} |
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$decryptionKeys = $this->privateKeyLoader->loadDecryptionKeys($this->identityProvider, $this->serviceProvider); |
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$decrypted = null; |
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foreach ($decryptionKeys as $index => $key) { |
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try { |
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$decrypted = $identifier->decrypt($key); |
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$this->logger->debug(sprintf('Decrypted assertion NameId with key "#%d"', $index)); |
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break; |
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} catch (Exception $e) { |
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$this->logger->debug(sprintf( |
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'Decrypting assertion NameId with key "#%d" failed, "%s" thrown: "%s"', |
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$index, |
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get_class($e), |
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$e->getMessage(), |
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)); |
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} |
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} |
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if ($decrypted === null) { |
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throw new NotDecryptedException( |
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'Could not decrypt the assertion NameId with the configured keys, see the debug log for information', |
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); |
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} |
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Assert::implementsInterface($decrypted, IdentifierInterface::class); |
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return new Assertion( |
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$assertion->getIssuer(), |
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$assertion->getIssueInstant(), |
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$assertion->getId(), |
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new Subject($decrypted, $subject->getSubjectConfirmation()), |
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$assertion->getConditions(), |
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$assertion->getStatements(), |
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); |
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} |
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/** |
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* @param \SimpleSAML\SAML2\Configuration\IdentityProvider $identityProvider |
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*/ |
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public function setIdentityProvider(IdentityProvider $identityProvider): void |
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{ |
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$this->identityProvider = $identityProvider; |
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} |
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/** |
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* @param \SimpleSAML\SAML2\Configuration\ServiceProvider $serviceProvider |
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*/ |
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public function setServiceProvider(ServiceProvider $serviceProvider): void |
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{ |
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$this->serviceProvider = $serviceProvider; |
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} |
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} |
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simplesamlphp /
saml2
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