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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\Module\casserver\Controller; |
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use DOMXPath; |
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use SAML2\DOMDocumentFactory; |
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use SimpleSAML\Configuration; |
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use SimpleSAML\Logger; |
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use SimpleSAML\Module\casserver\Cas\Protocol\Cas20; |
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use SimpleSAML\Module\casserver\Cas\Protocol\SamlValidateResponder; |
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use SimpleSAML\Module\casserver\Cas\TicketValidator; |
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use SimpleSAML\Module\casserver\Controller\Traits\UrlTrait; |
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use SimpleSAML\Module\casserver\Http\XmlResponse; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\Response; |
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use Symfony\Component\HttpKernel\Attribute\AsController; |
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use Symfony\Component\HttpKernel\Attribute\MapQueryParameter; |
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#[AsController] |
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class Cas30Controller |
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{ |
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use UrlTrait; |
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/** @var Logger */ |
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protected Logger $logger; |
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/** @var Configuration */ |
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protected Configuration $casConfig; |
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/** @var Cas20 */ |
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protected Cas20 $cas20Protocol; |
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/** @var TicketValidator */ |
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protected TicketValidator $ticketValidator; |
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/** @var SamlValidateResponder */ |
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protected SamlValidateResponder $validateResponder; |
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/** |
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* @param Configuration $sspConfig |
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* @param Configuration|null $casConfig |
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* @param TicketValidator|null $ticketValidator |
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* |
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* @throws \Exception |
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*/ |
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public function __construct( |
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private readonly Configuration $sspConfig, |
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Configuration $casConfig = null, |
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TicketValidator $ticketValidator = null, |
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) { |
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// We are using this work around in order to bypass Symfony's autowiring for cas configuration. Since |
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// the configuration class is the same, it loads the ssp configuration twice. Still, we need the constructor |
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// argument in order to facilitate testin. |
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$this->casConfig = ($casConfig === null || $casConfig === $sspConfig) |
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? Configuration::getConfig('module_casserver.php') : $casConfig; |
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$this->cas20Protocol = new Cas20($this->casConfig); |
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$this->ticketValidator = $ticketValidator ?? new TicketValidator($this->casConfig); |
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$this->validateResponder = new SamlValidateResponder(); |
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} |
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/** |
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* POST /casserver/samlValidate?TARGET= |
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* Host: cas.example.com |
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* Content-Length: 491 |
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* Content-Type: text/xml |
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* |
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* @param Request $request |
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* @param string $TARGET URL encoded service identifier of the back-end service. |
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* |
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* @throws \RuntimeException |
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* @return XmlResponse |
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* @link https://apereo.github.io/cas/7.1.x/protocol/CAS-Protocol-Specification.html#42-samlvalidate-cas-30 |
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*/ |
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public function samlValidate( |
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Request $request, |
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#[MapQueryParameter] string $TARGET, |
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): XmlResponse { |
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// From SAML2\SOAP::receive() |
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$postBody = $request->getContent(); |
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if (empty($postBody)) { |
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throw new \RuntimeException('samlValidate expects a soap body.'); |
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} |
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// SAML request values |
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// |
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// samlp:Request |
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// - RequestID [REQUIRED] - unique identifier for the request |
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// - IssueInstant [REQUIRED] - timestamp of the request |
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// samlp:AssertionArtifact [REQUIRED] - the valid CAS Service |
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$documentBody = DOMDocumentFactory::fromString($postBody); |
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$xPath = new DOMXpath($documentBody); |
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$xPath->registerNamespace('soap-env', 'http://schemas.xmlsoap.org/soap/envelope/'); |
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$samlRequestAttributes = $xPath->query('/soap-env:Envelope/soap-env:Body/*'); |
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// Check for the required saml attributes |
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if (!$samlRequestAttributes->item(0)->hasAttribute('RequestID')) { |
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throw new \RuntimeException('Missing RequestID samlp:Request attribute.'); |
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} elseif (!$samlRequestAttributes->item(0)->hasAttribute('IssueInstant')) { |
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throw new \RuntimeException('Missing IssueInstant samlp:Request attribute.'); |
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} |
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$assertionArtifactNode = $samlRequestAttributes->item(0)->getElementsByTagName('AssertionArtifact'); |
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if ( |
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$assertionArtifactNode->count() === 0 |
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|| empty($assertionArtifactNode->item(0)->nodeValue) |
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) { |
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throw new \RuntimeException('Missing ticketId in AssertionArtifact'); |
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} |
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$ticketId = $assertionArtifactNode->item(0)->nodeValue; |
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Logger::debug('samlvalidate: Checking ticket ' . $ticketId); |
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try { |
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// validateAndDeleteTicket might throw a CasException. In order to avoid third party modules |
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// dependencies, we will catch and rethrow the Exception. |
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$ticket = $this->ticketValidator->validateAndDeleteTicket($ticketId, $TARGET); |
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} catch (\Exception $e) { |
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throw new \RuntimeException($e->getMessage()); |
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} |
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if (!\is_array($ticket)) { |
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throw new \RuntimeException('Error loading ticket'); |
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} |
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$response = $this->validateResponder->convertToSaml($ticket); |
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$soap = $this->validateResponder->wrapInSoap($response); |
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return new XmlResponse( |
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(string)$soap, |
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Response::HTTP_OK, |
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); |
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} |
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} |
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simplesamlphp /
simplesamlphp-module-casserver
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