/usr/share/php/sabre21/Sabre/DAV/Auth/Backend/Apache.php is in php-sabre-dav-2.1 2.1.10-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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namespace Sabre\DAV\Auth\Backend;
use Sabre\DAV;
/**
* Apache authenticator
*
* This authentication backend assumes that authentication has been
* configured in apache, rather than within SabreDAV.
*
* Make sure apache is properly configured for this to work.
*
* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
* @author Evert Pot (http://evertpot.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
class Apache implements BackendInterface {
/**
* Current apache user
*
* @var string
*/
protected $remoteUser;
/**
* Authenticates the user based on the current request.
*
* If authentication is successful, true must be returned.
* If authentication fails, an exception must be thrown.
*
* @param DAV\Server $server
* @param string $realm
* @return bool
*/
function authenticate(DAV\Server $server, $realm) {
$remoteUser = $server->httpRequest->getRawServerValue('REMOTE_USER');
if (is_null($remoteUser)) {
$remoteUser = $server->httpRequest->getRawServerValue('REDIRECT_REMOTE_USER');
}
if (is_null($remoteUser)) {
throw new DAV\Exception('We did not receive the $_SERVER[REMOTE_USER] property. This means that apache might have been misconfigured');
}
$this->remoteUser = $remoteUser;
return true;
}
/**
* Returns information about the currently logged in user.
*
* If nobody is currently logged in, this method should return null.
*
* @return array|null
*/
function getCurrentUser() {
return $this->remoteUser;
}
}
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