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<?php
require_once('../../_include.php');
/**
* This SAML 2.0 endpoint is the endpoint at the SAML 2.0 SP that takes an Authentication Response
* as HTTP-POST in, and parses and processes it before it redirects the use to the RelayState.
*
* @author Andreas Aakre Solberg, UNINETT AS. <andreas.solberg@uninett.no>
* @package simpleSAMLphp
* @version $Id: AssertionConsumerService.php 2642 2010-11-16 14:31:18Z olavmrk $
* @abstract
*/
$config = SimpleSAML_Configuration::getInstance();
/* Get the session object for the user. Create a new session if no session
* exists for this user.
*/
$session = SimpleSAML_Session::getInstance();
/**
* Finish login operation.
*
* This helper function finishes a login operation and redirects the user back to the page which
* requested the login.
*
* @param array $authProcState The state of the authentication process.
*/
function finishLogin($authProcState) {
assert('is_array($authProcState)');
assert('array_key_exists("Attributes", $authProcState)');
assert('array_key_exists("core:saml20-sp:NameID", $authProcState)');
assert('array_key_exists("core:saml20-sp:SessionIndex", $authProcState)');
assert('array_key_exists("core:saml20-sp:TargetURL", $authProcState)');
assert('array_key_exists("Source", $authProcState)');
assert('array_key_exists("entityid", $authProcState["Source"])');
$authData = array(
'Attributes' => $authProcState['Attributes'],
'saml:sp:NameID' => $authProcState['core:saml20-sp:NameID'],
'saml:sp:SessionIndex' => $authProcState['core:saml20-sp:SessionIndex'],
'saml:sp:IdP' => $authProcState['Source']['entityid'],
);
global $session;
$session->doLogin('saml2', $authData);
SimpleSAML_Utilities::redirect($authProcState['core:saml20-sp:TargetURL']);
}
SimpleSAML_Logger::info('SAML2.0 - SP.AssertionConsumerService: Accessing SAML 2.0 SP endpoint AssertionConsumerService');
if (!$config->getBoolean('enable.saml20-sp', TRUE))
throw new SimpleSAML_Error_Error('NOACCESS');
if (array_key_exists(SimpleSAML_Auth_ProcessingChain::AUTHPARAM, $_REQUEST)) {
/* We have returned from the authentication processing filters. */
$authProcId = $_REQUEST[SimpleSAML_Auth_ProcessingChain::AUTHPARAM];
$authProcState = SimpleSAML_Auth_ProcessingChain::fetchProcessedState($authProcId);
finishLogin($authProcState);
}
try {
$metadataHandler = SimpleSAML_Metadata_MetaDataStorageHandler::getMetadataHandler();
$sp = $metadataHandler->getMetaDataCurrentEntityID();
$spMetadata = $metadataHandler->getMetaDataConfig($sp, 'saml20-sp-hosted');
$b = SAML2_Binding::getCurrentBinding();
if ($b instanceof SAML2_HTTPArtifact) {
$b->setSPMetadata($spMetadata);
}
$response = $b->receive();
if (!($response instanceof SAML2_Response)) {
throw new SimpleSAML_Error_BadRequest('Invalid message received to AssertionConsumerService endpoint.');
}
$idp = $response->getIssuer();
if ($idp === NULL) {
throw new Exception('Missing <saml:Issuer> in message delivered to AssertionConsumerService.');
}
$idpMetadata = $metadataHandler->getMetaDataConfig($idp, 'saml20-idp-remote');
/* Fetch the request information if it exists, fall back to RelayState if not. */
$requestId = $response->getInResponseTo();
$info = $session->getData('SAML2:SP:SSO:Info', $requestId);
if($info === NULL) {
/* Fall back to RelayState. */
$info = array();
$info['RelayState'] = $response->getRelayState();
if(empty($info['RelayState'])) {
$info['RelayState'] = $spMetadata->getString('RelayState', NULL);
}
if(empty($info['RelayState'])) {
/* RelayState missing. */
throw new SimpleSAML_Error_Error('NORELAYSTATE');
}
}
try {
$assertion = sspmod_saml_Message::processResponse($spMetadata, $idpMetadata, $response);
if (count($assertion) > 1) {
throw new SimpleSAML_Error_Exception('More than one assertion in received response.');
}
$assertion = $assertion[0];
} catch (sspmod_saml_Error $e) {
/* The status of the response wasn't "success". */
$status = $response->getStatus();
if(array_key_exists('OnError', $info)) {
/* We have an error handler. Return the error to it. */
SimpleSAML_Utilities::redirect($info['OnError'], array('StatusCode' => $status['Code']));
}
/* We don't have an error handler. Show an error page. */
throw new SimpleSAML_Error_Error('RESPONSESTATUSNOSUCCESS', $e);
}
SimpleSAML_Logger::info('SAML2.0 - SP.AssertionConsumerService: Successful response from IdP');
/*
* Attribute handling
*/
$attributes = $assertion->getAttributes();
SimpleSAML_Logger::stats('saml20-sp-SSO ' . $metadataHandler->getMetaDataCurrentEntityID() . ' ' . $idp . ' NA');
$nameId = $assertion->getNameId();
/* Begin module attribute processing */
$spMetadataArray = $spMetadata->toArray();
$idpMetadataArray = $idpMetadata->toArray();
$pc = new SimpleSAML_Auth_ProcessingChain($idpMetadataArray, $spMetadataArray, 'sp');
$authProcState = array(
'core:saml20-sp:NameID' => $nameId,
'core:saml20-sp:SessionIndex' => $assertion->getSessionIndex(),
'core:saml20-sp:TargetURL' => $info['RelayState'],
'ReturnURL' => SimpleSAML_Utilities::selfURLNoQuery(),
'Attributes' => $attributes,
'Destination' => $spMetadataArray,
'Source' => $idpMetadataArray,
);
$pc->processState($authProcState);
/* Since this function returns, processing has completed and attributes have
* been updated.
*/
finishLogin($authProcState);
} catch(Exception $exception) {
throw new SimpleSAML_Error_Error('PROCESSASSERTION', $exception);
}
?>
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