SAML1.php

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<?php
use SimpleSAML\Bindings\Shib13\HTTPPost;
 
class sspmod_saml_IdP_SAML1
{
    public static function sendResponse(array $state)
    {
        assert(isset($state['Attributes']));
        assert(isset($state['SPMetadata']));
        assert(isset($state['saml:shire']));
        assert(array_key_exists('saml:target', $state)); // Can be NULL
 
        $spMetadata = $state["SPMetadata"];
        $spEntityId = $spMetadata['entityid'];
        $spMetadata = SimpleSAML_Configuration::loadFromArray($spMetadata,
            '$metadata[' . var_export($spEntityId, true) . ']');
 
        SimpleSAML\Logger::info('Sending SAML 1.1 Response to ' . var_export($spEntityId, true));
 
        $attributes = $state['Attributes'];
        $shire = $state['saml:shire'];
        $target = $state['saml:target'];
 
        $idp = SimpleSAML_IdP::getByState($state);
 
        $idpMetadata = $idp->getConfig();
 
        $config = SimpleSAML_Configuration::getInstance();
        $metadata = SimpleSAML_Metadata_MetaDataStorageHandler::getMetadataHandler();
 
        $statsData = array(
            'spEntityID' => $spEntityId,
            'idpEntityID' => $idpMetadata->getString('entityid'),
            'protocol' => 'saml1',
        );
        if (isset($state['saml:AuthnRequestReceivedAt'])) {
            $statsData['logintime'] = microtime(true) - $state['saml:AuthnRequestReceivedAt'];
        }
        SimpleSAML_Stats::log('saml:idp:Response', $statsData);
 
        // Generate and send response.
        $ar = new \SimpleSAML\XML\Shib13\AuthnResponse();
        $authnResponseXML = $ar->generate($idpMetadata, $spMetadata, $shire, $attributes);
 
        $httppost = new HTTPPost($config, $metadata);
        $httppost->sendResponse($authnResponseXML, $idpMetadata, $spMetadata, $target, $shire);
    }
 
 
    public static function receiveAuthnRequest(SimpleSAML_IdP $idp)
    {
        if (isset($_REQUEST['cookieTime'])) {
            $cookieTime = (int)$_REQUEST['cookieTime'];
            if ($cookieTime + 5 > time()) {
                /*
                 * Less than five seconds has passed since we were
                 * here the last time. Cookies are probably disabled.
                 */
                \SimpleSAML\Utils\HTTP::checkSessionCookie(\SimpleSAML\Utils\HTTP::getSelfURL());
            }
        }
 
        if (!isset($_REQUEST['providerId'])) {
            throw new SimpleSAML_Error_BadRequest('Missing providerId parameter.');
        }
        $spEntityId = (string)$_REQUEST['providerId'];
 
        if (!isset($_REQUEST['shire'])) {
            throw new SimpleSAML_Error_BadRequest('Missing shire parameter.');
        }
        $shire = (string)$_REQUEST['shire'];
 
        if (isset($_REQUEST['target'])) {
            $target = $_REQUEST['target'];
        } else {
            $target = null;
        }
 
        SimpleSAML\Logger::info('Shib1.3 - IdP.SSOService: Got incoming Shib authnRequest from ' . var_export($spEntityId, true) . '.');
 
        $metadata = SimpleSAML_Metadata_MetaDataStorageHandler::getMetadataHandler();
        $spMetadata = $metadata->getMetaDataConfig($spEntityId, 'shib13-sp-remote');
 
        $found = false;
        foreach ($spMetadata->getEndpoints('AssertionConsumerService') as $ep) {
            if ($ep['Binding'] !== 'urn:oasis:names:tc:SAML:1.0:profiles:browser-post') {
                continue;
            }
            if ($ep['Location'] !== $shire) {
                continue;
            }
            $found = true;
            break;
        }
        if (!$found) {
            throw new Exception('Invalid AssertionConsumerService for SP ' .
                var_export($spEntityId, true) . ': ' . var_export($shire, true));
        }
 
        SimpleSAML_Stats::log('saml:idp:AuthnRequest', array(
            'spEntityID' => $spEntityId,
            'protocol' => 'saml1',
        ));
 
        $sessionLostURL = \SimpleSAML\Utils\HTTP::addURLParameters(
            \SimpleSAML\Utils\HTTP::getSelfURL(),
            array('cookieTime' => time()));
 
        $state = array(
            'Responder' => array('sspmod_saml_IdP_SAML1', 'sendResponse'),
            'SPMetadata' => $spMetadata->toArray(),
            SimpleSAML_Auth_State::RESTART => $sessionLostURL,
            'saml:shire' => $shire,
            'saml:target' => $target,
            'saml:AuthnRequestReceivedAt' => microtime(true),
        );
 
        $idp->handleAuthenticationRequest($state);
    }
}