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<?php namespace Illuminate\Cookie;
use Illuminate\Encryption\Encrypter;
use Illuminate\Encryption\DecryptException;
use Symfony\Component\HttpFoundation\Cookie;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\HttpKernelInterface;
class Guard implements HttpKernelInterface {
/**
* The wrapped kernel implementation.
*
* @var \Symfony\Component\HttpKernel\HttpKernelInterface
*/
protected $app;
/**
* The encrypter instance.
*
* @var \Illuminate\Encryption\Encrypter
*/
protected $encrypter;
/**
* Create a new CookieGuard instance.
*
* @param \Symfony\Component\HttpKernel\HttpKernelInterface $app
* @param \Illuminate\Encryption\Encrypter $encrypter
* @return void
*/
public function __construct(HttpKernelInterface $app, Encrypter $encrypter)
{
$this->app = $app;
$this->encrypter = $encrypter;
}
/**
* Handle the given request and get the response.
*
* @implements HttpKernelInterface::handle
*
* @param \Symfony\Component\HttpFoundation\Request $request
* @param int $type
* @param bool $catch
* @return \Symfony\Component\HttpFoundation\Response
*/
public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQUEST, $catch = true)
{
return $this->encrypt($this->app->handle($this->decrypt($request), $type, $catch));
}
/**
* Decrypt the cookies on the request.
*
* @param \Symfony\Component\HttpFoundation\Request $request
* @return \Symfony\Component\HttpFoundation\Request
*/
protected function decrypt(Request $request)
{
foreach ($request->cookies as $key => $c)
{
try
{
$request->cookies->set($key, $this->decryptCookie($c));
}
catch (DecryptException $e)
{
$request->cookies->set($key, null);
}
}
return $request;
}
/**
* Decrypt the given cookie and return the value.
*
* @param string|array $cookie
* @return string|array
*/
protected function decryptCookie($cookie)
{
return is_array($cookie)
? $this->decryptArray($cookie)
: $this->encrypter->decrypt($cookie);
}
/**
* Decrypt an array based cookie.
*
* @param array $cookie
* @return array
*/
protected function decryptArray(array $cookie)
{
$decrypted = array();
foreach ($cookie as $key => $value)
{
$decrypted[$key] = $this->encrypter->decrypt($value);
}
return $decrypted;
}
/**
* Encrypt the cookies on an outgoing response.
*
* @param \Symfony\Component\HttpFoundation\Response $response
* @return \Symfony\Component\HttpFoundation\Response
*/
protected function encrypt(Response $response)
{
foreach ($response->headers->getCookies() as $key => $c)
{
$encrypted = $this->encrypter->encrypt($c->getValue());
$response->headers->setCookie($this->duplicate($c, $encrypted));
}
return $response;
}
/**
* Duplicate a cookie with a new value.
*
* @param \Symfony\Component\HttpFoundation\Cookie $cookie
* @param mixed $value
* @return \Symfony\Component\HttpFoundation\Cookie
*/
protected function duplicate(Cookie $c, $value)
{
return new Cookie(
$c->getName(), $value, $c->getExpiresTime(), $c->getPath(),
$c->getDomain(), $c->isSecure(), $c->isHttpOnly()
);
}
}
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