<?php
if (!isset($_REQUEST['idp'])) {
throw new SimpleSAML_Error_BadRequest('Missing "idp" parameter.');
}
$idp = (string)$_REQUEST['idp'];
$idp = SimpleSAML_IdP::getById($idp);
if (!isset($_REQUEST['association'])) {
throw new SimpleSAML_Error_BadRequest('Missing "association" parameter.');
}
$assocId = urldecode($_REQUEST['association']);
$relayState = NULL;
if (isset($_REQUEST['RelayState'])) {
$relayState = (string)$_REQUEST['RelayState'];
}
$associations = $idp->getAssociations();
if (!isset($associations[$assocId])) {
throw new SimpleSAML_Error_BadRequest('Invalid association id.');
}
$association = $associations[$assocId];
$metadata = SimpleSAML_Metadata_MetaDataStorageHandler::getMetadataHandler();
$idpMetadata = $idp->getConfig();
$spMetadata = $metadata->getMetaDataConfig($association['saml:entityID'], 'saml20-sp-remote');
$lr = sspmod_saml_Message::buildLogoutRequest($idpMetadata, $spMetadata);
$lr->setSessionIndex($association['saml:SessionIndex']);
$lr->setNameId($association['saml:NameID']);
$assertionLifetime = $spMetadata->getInteger('assertion.lifetime', NULL);
if ($assertionLifetime === NULL) {
$assertionLifetime = $idpMetadata->getInteger('assertion.lifetime', 300);
}
$lr->setNotOnOrAfter(time() + $assertionLifetime);
$encryptNameId = $spMetadata->getBoolean('nameid.encryption', NULL);
if ($encryptNameId === NULL) {
$encryptNameId = $idpMetadata->getBoolean('nameid.encryption', FALSE);
}
if ($encryptNameId) {
$lr->encryptNameId(sspmod_saml_Message::getEncryptionKey($spMetadata));
}
SimpleSAML_Stats::log('saml:idp:LogoutRequest:sent', array(
'spEntityID' => $association['saml:entityID'],
'idpEntityID' => $idpMetadata->getString('entityid'),
));
$bindings = array(SAML2_Const::BINDING_HTTP_POST);
$dst = $spMetadata->getDefaultEndpoint('SingleLogoutService', $bindings);
$binding = SAML2_Binding::getBinding($dst['Binding']);
$lr->setDestination($dst['Location']);
$lr->setRelayState($relayState);
$binding->send($lr);
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