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<?php
namespace Symfony\Component\Security\Http\RememberMe;
use Symfony\Component\Security\Core\Authentication\RememberMe\TokenProviderInterface;
use Symfony\Component\HttpFoundation\Cookie;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Security\Core\Exception\AuthenticationException;
use Symfony\Component\Security\Core\Exception\CookieTheftException;
use Symfony\Component\Security\Core\Authentication\RememberMe\PersistentToken;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Authentication\Token\RememberMeToken;
/*
* 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.
*/
/**
* Concrete implementation of the RememberMeServicesInterface which needs
* an implementation of TokenProviderInterface for providing remember-me
* capabilities.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class PersistentTokenBasedRememberMeServices extends AbstractRememberMeServices
{
private $tokenProvider;
/**
* Sets the token provider
*
* @param TokenProviderInterface $tokenProvider
* @return void
*/
public function setTokenProvider(TokenProviderInterface $tokenProvider)
{
$this->tokenProvider = $tokenProvider;
}
/**
* {@inheritDoc}
*/
public function logout(Request $request, Response $response, TokenInterface $token)
{
parent::logout($request, $response, $token);
if (null !== ($cookie = $request->cookies->get($this->options['name']))
&& count($parts = $this->decodeCookie($cookie)) === 2
) {
list($series, $tokenValue) = $parts;
$this->tokenProvider->deleteTokenBySeries($series);
}
}
/**
* {@inheritDoc}
*/
protected function processAutoLoginCookie(array $cookieParts, Request $request)
{
if (count($cookieParts) !== 2) {
throw new AuthenticationException('The cookie is invalid.');
}
list($series, $tokenValue) = $cookieParts;
$persistentToken = $this->tokenProvider->loadTokenBySeries($series);
if ($persistentToken->getTokenValue() !== $tokenValue) {
$this->tokenProvider->deleteTokenBySeries($series);
throw new CookieTheftException('This token was already used. The account is possibly compromised.');
}
if ($persistentToken->getLastUsed()->getTimestamp() + $this->options['lifetime'] < time()) {
throw new AuthenticationException('The cookie has expired.');
}
$series = $persistentToken->getSeries();
$tokenValue = $this->generateRandomValue();
$this->tokenProvider->updateToken($series, $tokenValue, new \DateTime());
$request->attributes->set(self::COOKIE_ATTR_NAME,
new Cookie(
$this->options['name'],
$this->encodeCookie(array($series, $tokenValue)),
time() + $this->options['lifetime'],
$this->options['path'],
$this->options['domain'],
$this->options['secure'],
$this->options['httponly']
)
);
return $this->getUserProvider($persistentToken->getClass())->loadUserByUsername($persistentToken->getUsername());
}
/**
* {@inheritDoc}
*/
protected function onLoginSuccess(Request $request, Response $response, TokenInterface $token)
{
$series = $this->generateRandomValue();
$tokenValue = $this->generateRandomValue();
$this->tokenProvider->createNewToken(
new PersistentToken(
get_class($user = $token->getUser()),
$user->getUsername(),
$series,
$tokenValue,
new \DateTime()
)
);
$response->headers->setCookie(
new Cookie(
$this->options['name'],
$this->encodeCookie(array($series, $tokenValue)),
time() + $this->options['lifetime'],
$this->options['path'],
$this->options['domain'],
$this->options['secure'],
$this->options['httponly']
)
);
}
/**
* Generates a cryptographically strong random value
*
* @return string
*/
protected function generateRandomValue()
{
if (function_exists('openssl_random_pseudo_bytes')) {
$bytes = openssl_random_pseudo_bytes(64, $strong);
if (true === $strong && false !== $bytes) {
return base64_encode($bytes);
}
}
if (null !== $this->logger) {
$this->logger->warn('Could not produce a cryptographically strong random value. Please install/update the OpenSSL extension.');
}
return base64_encode(hash('sha512', uniqid(mt_rand(), true), true));
}
}
|
