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<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 2.0.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Auth;
use Cake\Http\Exception\UnauthorizedException;
use Cake\Http\Response;
use Cake\Http\ServerRequest;
/**
* Basic Authentication adapter for AuthComponent.
*
* Provides Basic HTTP authentication support for AuthComponent. Basic Auth will
* authenticate users against the configured userModel and verify the username
* and passwords match.
*
* ### Using Basic auth
*
* In your controller's components array, add auth + the required config
* ```
* public $components = [
* 'Auth' => [
* 'authenticate' => ['Basic']
* ]
* ];
* ```
*
* You should also set `AuthComponent::$sessionKey = false;` in your AppController's
* beforeFilter() to prevent CakePHP from sending a session cookie to the client.
*
* Since HTTP Basic Authentication is stateless you don't need a login() action
* in your controller. The user credentials will be checked on each request. If
* valid credentials are not provided, required authentication headers will be sent
* by this authentication provider which triggers the login dialog in the browser/client.
*
* You may also want to use `$this->Auth->unauthorizedRedirect = false;`.
* By default, unauthorized users are redirected to the referrer URL,
* `AuthComponent::$loginAction`, or '/'. If unauthorizedRedirect is set to
* false, a ForbiddenException exception is thrown instead of redirecting.
*/
class BasicAuthenticate extends BaseAuthenticate
{
/**
* Authenticate a user using HTTP auth. Will use the configured User model and attempt a
* login using HTTP auth.
*
* @param \Cake\Http\ServerRequest $request The request to authenticate with.
* @param \Cake\Http\Response $response The response to add headers to.
* @return mixed Either false on failure, or an array of user data on success.
*/
public function authenticate(ServerRequest $request, Response $response)
{
return $this->getUser($request);
}
/**
* Get a user based on information in the request. Used by cookie-less auth for stateless clients.
*
* @param \Cake\Http\ServerRequest $request Request object.
* @return mixed Either false or an array of user information
*/
public function getUser(ServerRequest $request)
{
$username = $request->getEnv('PHP_AUTH_USER');
$pass = $request->getEnv('PHP_AUTH_PW');
if (!is_string($username) || $username === '' || !is_string($pass) || $pass === '') {
return false;
}
return $this->_findUser($username, $pass);
}
/**
* Handles an unauthenticated access attempt by sending appropriate login headers
*
* @param \Cake\Http\ServerRequest $request A request object.
* @param \Cake\Http\Response $response A response object.
* @return void
* @throws \Cake\Http\Exception\UnauthorizedException
*/
public function unauthenticated(ServerRequest $request, Response $response)
{
$Exception = new UnauthorizedException();
$Exception->responseHeader($this->loginHeaders($request));
throw $Exception;
}
/**
* Generate the login headers
*
* @param \Cake\Http\ServerRequest $request Request object.
* @return array Headers for logging in.
*/
public function loginHeaders(ServerRequest $request)
{
$realm = $this->getConfig('realm') ?: $request->getEnv('SERVER_NAME');
return [
'WWW-Authenticate' => sprintf('Basic realm="%s"', $realm)
];
}
}