Completed
Pull Request — develop (#110)
by Daan van
10:17 queued 07:23
created

ExplicitSessionTimeoutHandler::process()   C

Complexity

Conditions 7
Paths 10

Size

Total Lines 49
Code Lines 25

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
c 1
b 0
f 0
dl 0
loc 49
rs 6.7272
cc 7
eloc 25
nc 10
nop 1
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<?php
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/**
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 * Copyright 2016 SURFnet bv
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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namespace Surfnet\StepupSelfService\SelfServiceBundle\Security\Authentication\Handler;
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use Psr\Log\LoggerInterface;
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use Surfnet\StepupSelfService\SelfServiceBundle\Security\Authentication\AuthenticatedSessionStateHandler;
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use Surfnet\StepupSelfService\SelfServiceBundle\Security\Authentication\Session\SessionLifetimeGuard;
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use Symfony\Component\HttpFoundation\RedirectResponse;
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use Symfony\Component\HttpKernel\Event\GetResponseEvent;
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use Symfony\Component\Routing\RouterInterface;
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use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
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use Symfony\Component\Security\Http\Logout\CookieClearingLogoutHandler;
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use Symfony\Component\Security\Http\Logout\SessionLogoutHandler;
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class ExplicitSessionTimeoutHandler implements AuthenticationHandler
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{
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    /**
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     * @var AuthenticationHandler|null
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     */
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    private $nextHandler;
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    /**
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     * @var TokenStorageInterface
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     */
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    private $tokenStorage;
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    /**
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     * @var SessionLifetimeGuard
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     */
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    private $sessionLifetimeGuard;
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    /**
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     * @var AuthenticatedSessionStateHandler
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     */
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    private $authenticatedSession;
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    /**
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     * @var SessionLogoutHandler
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     */
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    private $sessionLogoutHandler;
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    /**
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     * @var CookieClearingLogoutHandler
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     */
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    private $cookieClearingLogoutHandler;
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    /**
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     * @var RouterInterface
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     */
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    private $router;
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    /**
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     * @var LoggerInterface
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     */
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    private $logger;
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    public function __construct(
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        TokenStorageInterface $tokenStorageInterface,
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        AuthenticatedSessionStateHandler $authenticatedSessionStateHandler,
0 ignored issues
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Comprehensibility Naming introduced by
The variable name $authenticatedSessionStateHandler exceeds the maximum configured length of 30.

Very long variable names usually make code harder to read. It is therefore recommended not to make variable names too verbose.

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        SessionLifetimeGuard $sessionLifetimeGuard,
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        SessionLogoutHandler $sessionLogoutHandler,
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        CookieClearingLogoutHandler $cookieClearingLogoutHandler,
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        RouterInterface $router,
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        LoggerInterface $logger
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    ) {
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        $this->tokenStorage                = $tokenStorageInterface;
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        $this->authenticatedSession        = $authenticatedSessionStateHandler;
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        $this->sessionLifetimeGuard        = $sessionLifetimeGuard;
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        $this->sessionLogoutHandler        = $sessionLogoutHandler;
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        $this->cookieClearingLogoutHandler = $cookieClearingLogoutHandler;
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        $this->router                      = $router;
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        $this->logger                      = $logger;
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    }
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    public function process(GetResponseEvent $event)
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    {
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        if ($this->tokenStorage->getToken() !== null
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            && !$this->sessionLifetimeGuard->sessionLifetimeWithinLimits($this->authenticatedSession)
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        ) {
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            $invalidatedBy = [];
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            if ($this->sessionLifetimeGuard->sessionLifetimeWithinAbsoluteLimit($this->authenticatedSession)) {
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                $invalidatedBy[] = 'absolute';
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            }
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            if ($this->sessionLifetimeGuard->sessionLifetimeWithinRelativeLimit($this->authenticatedSession)) {
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                $invalidatedBy[] = 'relative';
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            }
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            $this->logger->notice(sprintf(
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                'Authenticated user found, but session was determined to be outside of the "%s" time limit. User will '
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                . 'be logged out and redirected to session-expired page to attempt new login.',
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                implode(' and ', $invalidatedBy)
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            ));
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            $token   = $this->tokenStorage->getToken();
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            $request = $event->getRequest();
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            // if the current request was not a GET request we cannot safely redirect to that page after login as it
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            // may require a form resubmit for instance. Therefor, we redirect to the last GET request (either current
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            // or previous).
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            $afterLoginRedirectTo = $this->authenticatedSession->getCurrentRequestUri();
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            if ($event->getRequest()->getMethod() === 'GET') {
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                $afterLoginRedirectTo = $event->getRequest()->getRequestUri();
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            }
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            // log the user out using Symfony methodology, see the LogoutListener
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            $event->setResponse(new RedirectResponse($this->router->generate('selfservice_security_session_expired')));
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            $this->sessionLogoutHandler->logout($request, $event->getResponse(), $token);
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            $this->cookieClearingLogoutHandler->logout($request, $event->getResponse(), $token);
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            $this->tokenStorage->setToken(null);
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            // the session is restarted after invalidation during the logout, so we can (re)store the last GET request
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            $this->authenticatedSession->setCurrentRequestUri($afterLoginRedirectTo);
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            return;
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        }
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        if ($this->nextHandler !== null) {
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            $this->nextHandler->process($event);
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        }
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    }
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    public function setNext(AuthenticationHandler $handler)
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    {
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        $this->nextHandler = $handler;
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    }
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}
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