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<?php
/**
* HTTP Basic authentication backend class
*
* This class can be used by authentication objects wishing to use HTTP Basic
* Most of the digest logic is handled, implementors just need to worry about
* the validateUserPass method.
*
* @package Sabre
* @subpackage DAV
* @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
* @author James David Low (http://jameslow.com/)
* @author Evert Pot (http://www.rooftopsolutions.nl/)
* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
*/
abstract class Sabre_DAV_Auth_Backend_AbstractBasic implements Sabre_DAV_Auth_IBackend {
/**
* This variable holds the currently logged in username.
*
* @var string|null
*/
protected $currentUser;
/**
* Validates a username and password
*
* This method should return true or false depending on if login
* succeeded.
*
* @param string $username
* @param string $password
* @return bool
*/
abstract protected function validateUserPass($username, $password);
/**
* Returns information about the currently logged in username.
*
* If nobody is currently logged in, this method should return null.
*
* @return string|null
*/
public function getCurrentUser() {
return $this->currentUser;
}
/**
* 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 Sabre_DAV_Server $server
* @param string $realm
* @throws Sabre_DAV_Exception_NotAuthenticated
* @return bool
*/
public function authenticate(Sabre_DAV_Server $server, $realm) {
$auth = new Sabre_HTTP_BasicAuth();
$auth->setHTTPRequest($server->httpRequest);
$auth->setHTTPResponse($server->httpResponse);
$auth->setRealm($realm);
$userpass = $auth->getUserPass();
if (!$userpass) {
$auth->requireLogin();
throw new Sabre_DAV_Exception_NotAuthenticated('No basic authentication headers were found');
}
// Authenticates the user
if (!$this->validateUserPass($userpass[0],$userpass[1])) {
$auth->requireLogin();
throw new Sabre_DAV_Exception_NotAuthenticated('Username or password does not match');
}
$this->currentUser = $userpass[0];
return true;
}
}
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