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File Name : AbstractRememberMeServices.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Security\Http\RememberMe;

use Symfony\Component\Security\Core\Exception\AuthenticationException;
use Symfony\Component\Security\Core\User\UserInterface;
use Symfony\Component\Security\Core\Authentication\Token\RememberMeToken;
use Symfony\Component\Security\Http\Logout\LogoutHandlerInterface;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Exception\UnsupportedUserException;
use Symfony\Component\Security\Core\Exception\UsernameNotFoundException;
use Symfony\Component\Security\Core\Exception\CookieTheftException;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Cookie;
use Psr\Log\LoggerInterface;

/**
 * Base class implementing the RememberMeServicesInterface
 *
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
abstract class AbstractRememberMeServices implements RememberMeServicesInterface, LogoutHandlerInterface
{
    const COOKIE_DELIMITER = ':';

protected $logger;
    protected $options;
    private $providerKey;
    private $key;
    private $userProviders;

/**
     * Constructor.
     *
     * @param array           $userProviders
     * @param string          $key
     * @param string          $providerKey
     * @param array           $options
     * @param LoggerInterface $logger
     *
     * @throws \InvalidArgumentException
     */
    public function __construct(array $userProviders, $key, $providerKey, array $options = array(), LoggerInterface $logger = null)
    {
        if (empty($key)) {
            throw new \InvalidArgumentException('$key must not be empty.');
        }
        if (empty($providerKey)) {
            throw new \InvalidArgumentException('$providerKey must not be empty.');
        }
        if (0 === count($userProviders)) {
            throw new \InvalidArgumentException('You must provide at least one user provider.');
        }

$this->userProviders = $userProviders;
        $this->key = $key;
        $this->providerKey = $providerKey;
        $this->options = $options;
        $this->logger = $logger;
    }

/**
     * Returns the parameter that is used for checking whether remember-me
     * services have been requested.
     *
     * @return string
     */
    public function getRememberMeParameter()
    {
        return $this->options['remember_me_parameter'];
    }

/**
     * @return string
     */
    public function getKey()
    {
        return $this->key;
    }

/**
     * Implementation of RememberMeServicesInterface. Detects whether a remember-me
     * cookie was set, decodes it, and hands it to subclasses for further processing.
     *
     * @param Request $request
     *
     * @return TokenInterface|null
     *
     * @throws CookieTheftException
     * @throws \RuntimeException
     */
    final public function autoLogin(Request $request)
    {
        if (null === $cookie = $request->cookies->get($this->options['name'])) {
            return;
        }

if (null !== $this->logger) {
            $this->logger->debug('Remember-me cookie detected.');
        }

$cookieParts = $this->decodeCookie($cookie);

try {
            $user = $this->processAutoLoginCookie($cookieParts, $request);

if (!$user instanceof UserInterface) {
                throw new \RuntimeException('processAutoLoginCookie() must return a UserInterface implementation.');
            }

if (null !== $this->logger) {
                $this->logger->info('Remember-me cookie accepted.');
            }

return new RememberMeToken($user, $this->providerKey, $this->key);
        } catch (CookieTheftException $theft) {
            $this->cancelCookie($request);

throw $theft;
        } catch (UsernameNotFoundException $notFound) {
            if (null !== $this->logger) {
                $this->logger->info('User for remember-me cookie not found.');
            }
        } catch (UnsupportedUserException $unSupported) {
            if (null !== $this->logger) {
                $this->logger->warning('User class for remember-me cookie not supported.');
            }
        } catch (AuthenticationException $invalid) {
            if (null !== $this->logger) {
                $this->logger->debug('Remember-Me authentication failed: '.$invalid->getMessage());
            }
        }

$this->cancelCookie($request);

return null;
    }

/**
     * Implementation for LogoutHandlerInterface. Deletes the cookie.
     *
     * @param Request        $request
     * @param Response       $response
     * @param TokenInterface $token
     */
    public function logout(Request $request, Response $response, TokenInterface $token)
    {
        $this->cancelCookie($request);
    }

/**
     * Implementation for RememberMeServicesInterface. Deletes the cookie when
     * an attempted authentication fails.
     *
     * @param Request $request
     */
    final public function loginFail(Request $request)
    {
        $this->cancelCookie($request);
        $this->onLoginFail($request);
    }

/**
     * Implementation for RememberMeServicesInterface. This is called when an
     * authentication is successful.
     *
     * @param Request        $request
     * @param Response       $response
     * @param TokenInterface $token    The token that resulted in a successful authentication
     */
    final public function loginSuccess(Request $request, Response $response, TokenInterface $token)
    {
        // Make sure any old remember-me cookies are cancelled
        $this->cancelCookie($request);

if (!$token->getUser() instanceof UserInterface) {
            if (null !== $this->logger) {
                $this->logger->debug('Remember-me ignores token since it does not contain a UserInterface implementation.');
            }

return;
        }

if (!$this->isRememberMeRequested($request)) {
            if (null !== $this->logger) {
                $this->logger->debug('Remember-me was not requested.');
            }

return;
        }

if (null !== $this->logger) {
            $this->logger->debug('Remember-me was requested; setting cookie.');
        }

// Remove attribute from request that sets a NULL cookie.
        // It was set by $this->cancelCookie()
        // (cancelCookie does other things too for some RememberMeServices
        // so we should still call it at the start of this method)
        $request->attributes->remove(self::COOKIE_ATTR_NAME);

$this->onLoginSuccess($request, $response, $token);
    }

/**
     * Subclasses should validate the cookie and do any additional processing
     * that is required. This is called from autoLogin().
     *
     * @param array   $cookieParts
     * @param Request $request
     *
     * @return TokenInterface
     */
    abstract protected function processAutoLoginCookie(array $cookieParts, Request $request);

/**
     * @param Request $request
     */
    protected function onLoginFail(Request $request)
    {
    }

/**
     * This is called after a user has been logged in successfully, and has
     * requested remember-me capabilities. The implementation usually sets a
     * cookie and possibly stores a persistent record of it.
     *
     * @param Request        $request
     * @param Response       $response
     * @param TokenInterface $token
     */
    abstract protected function onLoginSuccess(Request $request, Response $response, TokenInterface $token);

final protected function getUserProvider($class)
    {
        foreach ($this->userProviders as $provider) {
            if ($provider->supportsClass($class)) {
                return $provider;
            }
        }

throw new UnsupportedUserException(sprintf('There is no user provider that supports class "%s".', $class));
    }

/**
     * Decodes the raw cookie value
     *
     * @param string $rawCookie
     *
     * @return array
     */
    protected function decodeCookie($rawCookie)
    {
        return explode(self::COOKIE_DELIMITER, base64_decode($rawCookie));
    }

/**
     * Encodes the cookie parts
     *
     * @param array $cookieParts
     *
     * @return string
     */
    protected function encodeCookie(array $cookieParts)
    {
        return base64_encode(implode(self::COOKIE_DELIMITER, $cookieParts));
    }

/**
     * Deletes the remember-me cookie
     *
     * @param Request $request
     */
    protected function cancelCookie(Request $request)
    {
        if (null !== $this->logger) {
            $this->logger->debug(sprintf('Clearing remember-me cookie "%s"', $this->options['name']));
        }

$request->attributes->set(self::COOKIE_ATTR_NAME, new Cookie($this->options['name'], null, 1, $this->options['path'], $this->options['domain']));
    }

/**
     * Checks whether remember-me capabilities were requested
     *
     * @param Request $request
     *
     * @return Boolean
     */
    protected function isRememberMeRequested(Request $request)
    {
        if (true === $this->options['always_remember_me']) {
            return true;
        }

$parameter = $request->get($this->options['remember_me_parameter'], null, true);

if ($parameter === null && null !== $this->logger) {
            $this->logger->debug(sprintf('Did not send remember-me cookie (remember-me parameter "%s" was not sent).', $this->options['remember_me_parameter']));
        }

return $parameter === 'true' || $parameter === 'on' || $parameter === '1' || $parameter === 'yes';
    }
}

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2024-03-03 10:54:51
..	dir	-	root/root	0755	2024-03-03 10:54:51
AbstractRememberMeServices.php	text/x-php	9.72 KB	root/root	0644	2019-12-18 11:22:57
PersistentTokenBasedRememberMeServices.php	text/x-php	5.05 KB	root/root	0644	2019-12-18 11:22:57
RememberMeServicesInterface.php	text/x-php	2.93 KB	root/root	0644	2019-12-18 11:22:57
ResponseListener.php	text/x-php	1.21 KB	root/root	0644	2019-12-18 11:22:57
TokenBasedRememberMeServices.php	text/x-php	4.88 KB	root/root	0644	2019-12-18 11:22:57

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