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<?php
 /**
 * This endpoint returns an XRDS document describing this server.
 *
 * @package simpleSAMLphp
 */
 
 if (isset($_REQUEST['user'])) {
 $user = (string)$_REQUEST['user'];
 $serviceTypes = array(
 'http://specs.openid.net/auth/2.0/signon',
 'http://openid.net/server/1.0',
 'http://openid.net/server/1.1',
 );
 } else {
 $user = NULL;
 $serviceTypes = array(
 'http://specs.openid.net/auth/2.0/server',
 );
 }
 
 $server = sspmod_openidProvider_Server::getInstance();
 
 $serverURL = $server->getServerURL();
 
 header('Content-Type: application/xrds+xml');
 
 echo('<?xml version="1.0" encoding="UTF-8"?>' . "\n");
 echo('<xrds:XRDS xmlns:xrds="xri://$xrds" xmlns="xri://$xrd*($v*2.0)">');
 echo('<XRD>');
 echo('<Service priority="0">');
 
 foreach ($serviceTypes as $t) {
 echo('<Type>' . htmlspecialchars($t) . '</Type>');
 }
 
 echo('<URI>' . htmlspecialchars($serverURL) . '</URI>');
 
 if ($user !== NULL) {
 $localId = SimpleSAML_Module::getModuleURL('openidProvider/user.php') . '/' . $user;
 echo('<LocalID>' . htmlspecialchars($localId) . '</LocalID>');
 }
 
 echo('</Service>');
 echo('</XRD>');
 echo('</xrds:XRDS>');
 
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