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<?php
declare(strict_types=1);
namespace Sabre\HTTP\Auth;
/**
* HTTP Bearer authentication utility.
*
* This class helps you setup bearer auth. The process is fairly simple:
*
* 1. Instantiate the class.
* 2. Call getToken (this will return null or a token as string)
* 3. If you didn't get a valid token, call 'requireLogin'
*
* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
* @author François Kooman (fkooman@tuxed.net)
* @license http://sabre.io/license/ Modified BSD License
*/
class Bearer extends AbstractAuth
{
/**
* This method returns a string with an access token.
*
* If no token was found, this method returns null.
*
* @return string|null
*/
public function getToken()
{
$auth = $this->request->getHeader('Authorization');
if (!$auth) {
return null;
}
if ('bearer ' !== strtolower(substr($auth, 0, 7))) {
return null;
}
return substr($auth, 7);
}
/**
* This method sends the needed HTTP header and status code (401) to force
* authentication.
*/
public function requireLogin()
{
$this->response->addHeader('WWW-Authenticate', 'Bearer realm="'.$this->realm.'"');
$this->response->setStatus(401);
}
}
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