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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\SAML2\Assertion; |
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use Psr\Log\LoggerInterface; |
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use SimpleSAML\SAML2\Assertion\Exception\InvalidAssertionException; |
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use SimpleSAML\SAML2\Assertion\Exception\InvalidSubjectConfirmationException; |
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use SimpleSAML\SAML2\Assertion\Transformer\TransformerInterface; |
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use SimpleSAML\SAML2\Assertion\Validation\AssertionValidator; |
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use SimpleSAML\SAML2\Assertion\Validation\SubjectConfirmationValidator; |
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use SimpleSAML\SAML2\Configuration\IdentityProvider; |
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use SimpleSAML\SAML2\Response\Exception\InvalidSignatureException; |
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use SimpleSAML\SAML2\Signature\Validator; |
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use SimpleSAML\SAML2\Utilities\ArrayCollection; |
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use SimpleSAML\SAML2\XML\saml\Assertion; |
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use SimpleSAML\SAML2\XML\saml\EncryptedAssertion; |
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use function implode; |
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use function sprintf; |
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class Processor |
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{ |
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/** |
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* @param \SimpleSAML\SAML2\Assertion\Decrypter $decrypter |
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* @param \SimpleSAML\SAML2\Signature\Validator $signatureValidator |
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* @param \SimpleSAML\SAML2\Assertion\Validation\AssertionValidator $assertionValidator |
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* @param \SimpleSAML\SAML2\Assertion\Validation\SubjectConfirmationValidator $subjectConfirmationValidator |
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* @param \SimpleSAML\SAML2\Assertion\Transformer\TransformerInterface $transformer |
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* @param \SimpleSAML\SAML2\Configuration\IdentityProvider $identityProviderConfiguration |
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* @param \Psr\Log\LoggerInterface $logger |
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*/ |
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public function __construct( |
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private Decrypter $decrypter, |
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private Validator $signatureValidator, |
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private AssertionValidator $assertionValidator, |
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private SubjectConfirmationValidator $subjectConfirmationValidator, |
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private TransformerInterface $transformer, |
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private IdentityProvider $identityProviderConfiguration, |
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private LoggerInterface $logger, |
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) { |
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} |
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/** |
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* Decrypt assertions, or do nothing if assertions are already decrypted. |
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* |
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* @param \SimpleSAML\SAML2\Utilities\ArrayCollection $assertions |
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* @return \SimpleSAML\SAML2\Utilities\ArrayCollection Collection of processed assertions |
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*/ |
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public function decryptAssertions(ArrayCollection $assertions): ArrayCollection |
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{ |
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$decrypted = new ArrayCollection(); |
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foreach ($assertions->getIterator() as $assertion) { |
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if ($assertion instanceof EncryptedAssertion) { |
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$decrypted->add($this->decryptAssertion($assertion)); |
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} elseif ($assertion instanceof Assertion) { |
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$decrypted->add($assertion); |
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} else { |
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throw new InvalidAssertionException('The assertion must be of type: EncryptedAssertion or Assertion'); |
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} |
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} |
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return $decrypted; |
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} |
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/** |
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* @param \SimpleSAML\SAML2\Utilities\ArrayCollection $assertions Collection of decrypted assertions |
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* @return \SimpleSAML\SAML2\Utilities\ArrayCollection Collection of processed assertions |
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*/ |
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public function processAssertions(ArrayCollection $assertions): ArrayCollection |
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{ |
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$processed = new ArrayCollection(); |
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foreach ($assertions->getIterator() as $assertion) { |
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$processed->add($this->process($assertion)); |
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} |
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return $processed; |
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} |
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/** |
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* @param \SimpleSAML\SAML2\XML\saml\Assertion $assertion |
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* @return \SimpleSAML\SAML2\XML\saml\Assertion |
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*/ |
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public function process(Assertion $assertion): Assertion |
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{ |
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if (!$assertion->wasSignedAtConstruction()) { |
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$this->logger->info(sprintf( |
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'Assertion with id "%s" was not signed at construction, not verifying the signature', |
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$assertion->getId(), |
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)); |
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} else { |
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$this->logger->info(sprintf('Verifying signature of Assertion with id "%s"', $assertion->getId())); |
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if (!$this->signatureValidator->hasValidSignature($assertion, $this->identityProviderConfiguration)) { |
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throw new InvalidSignatureException( |
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sprintf('The assertion with id "%s" does not have a valid signature', $assertion->getId()), |
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); |
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} |
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} |
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$this->validateAssertion($assertion); |
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$assertion = $this->transformAssertion($assertion); |
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return $assertion; |
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} |
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/** |
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* @param \SimpleSAML\SAML2\XML\saml\EncryptedAssertion $assertion |
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* @return \SimpleSAML\SAML2\XML\saml\Assertion |
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*/ |
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private function decryptAssertion(EncryptedAssertion $assertion): Assertion |
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{ |
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return $this->decrypter->decrypt($assertion); |
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} |
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/** |
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* @param \SimpleSAML\SAML2\XML\saml\Assertion $assertion |
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*/ |
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public function validateAssertion(Assertion $assertion): void |
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{ |
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$assertionValidationResult = $this->assertionValidator->validate($assertion); |
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if (!$assertionValidationResult->isValid()) { |
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throw new InvalidAssertionException(sprintf( |
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'Invalid Assertion in SAML Response, errors: "%s"', |
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implode('", "', $assertionValidationResult->getErrors()), |
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)); |
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} |
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$subject = $assertion->getSubject(); |
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if ($subject !== null) { |
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foreach ($subject->getSubjectConfirmation() as $subjectConfirmation) { |
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$subjectConfirmationValidationResult = $this->subjectConfirmationValidator->validate( |
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$subjectConfirmation, |
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); |
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if (!$subjectConfirmationValidationResult->isValid()) { |
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throw new InvalidSubjectConfirmationException(sprintf( |
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'Invalid SubjectConfirmation in Assertion, errors: "%s"', |
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implode('", "', $subjectConfirmationValidationResult->getErrors()), |
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)); |
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} |
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} |
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} |
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} |
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/** |
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* @param \SimpleSAML\SAML2\XML\saml\Assertion $assertion |
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* @return \SimpleSAML\SAML2\XML\saml\Assertion |
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*/ |
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private function transformAssertion(Assertion $assertion): Assertion |
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{ |
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return $this->transformer->transform($assertion); |
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} |
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} |
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simplesamlphp /
saml2
