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编辑当前文件:/home/qrafawbu/www/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php
manager = $manager; $this->cacheFactoryResolver = $cacheFactoryResolver; } /** * Handle an incoming request. * * @param \Illuminate\Http\Request $request * @param \Closure $next * @return mixed */ public function handle($request, Closure $next) { if (! $this->sessionConfigured()) { return $next($request); } $session = $this->getSession($request); if ($this->manager->shouldBlock() || ($request->route() instanceof Route && $request->route()->locksFor())) { return $this->handleRequestWhileBlocking($request, $session, $next); } else { return $this->handleStatefulRequest($request, $session, $next); } } /** * Handle the given request within session state. * * @param \Illuminate\Http\Request $request * @param \Illuminate\Contracts\Session\Session $session * @param \Closure $next * @return mixed */ protected function handleRequestWhileBlocking(Request $request, $session, Closure $next) { if (! $request->route() instanceof Route) { return; } $lockFor = $request->route() && $request->route()->locksFor() ? $request->route()->locksFor() : 10; $lock = $this->cache($this->manager->blockDriver()) ->lock('session:'.$session->getId(), $lockFor) ->betweenBlockedAttemptsSleepFor(50); try { $lock->block( ! is_null($request->route()->waitsFor()) ? $request->route()->waitsFor() : 10 ); return $this->handleStatefulRequest($request, $session, $next); } finally { optional($lock)->release(); } } /** * Handle the given request within session state. * * @param \Illuminate\Http\Request $request * @param \Illuminate\Contracts\Session\Session $session * @param \Closure $next * @return mixed */ protected function handleStatefulRequest(Request $request, $session, Closure $next) { // If a session driver has been configured, we will need to start the session here // so that the data is ready for an application. Note that the Laravel sessions // do not make use of PHP "native" sessions in any way since they are crappy. $request->setLaravelSession( $this->startSession($request, $session) ); $this->collectGarbage($session); $response = $next($request); $this->storeCurrentUrl($request, $session); $this->addCookieToResponse($response, $session); // Again, if the session has been configured we will need to close out the session // so that the attributes may be persisted to some storage medium. We will also // add the session identifier cookie to the application response headers now. $this->saveSession($request); return $response; } /** * Start the session for the given request. * * @param \Illuminate\Http\Request $request * @param \Illuminate\Contracts\Session\Session $session * @return \Illuminate\Contracts\Session\Session */ protected function startSession(Request $request, $session) { return tap($session, function ($session) use ($request) { $session->setRequestOnHandler($request); $session->start(); }); } /** * Get the session implementation from the manager. * * @param \Illuminate\Http\Request $request * @return \Illuminate\Contracts\Session\Session */ public function getSession(Request $request) { return tap($this->manager->driver(), function ($session) use ($request) { $session->setId($request->cookies->get($session->getName())); }); } /** * Remove the garbage from the session if necessary. * * @param \Illuminate\Contracts\Session\Session $session * @return void */ protected function collectGarbage(Session $session) { $config = $this->manager->getSessionConfig(); // Here we will see if this request hits the garbage collection lottery by hitting // the odds needed to perform garbage collection on any given request. If we do // hit it, we'll call this handler to let it delete all the expired sessions. if ($this->configHitsLottery($config)) { $session->getHandler()->gc($this->getSessionLifetimeInSeconds()); } } /** * Determine if the configuration odds hit the lottery. * * @param array $config * @return bool */ protected function configHitsLottery(array $config) { return random_int(1, $config['lottery'][1]) <= $config['lottery'][0]; } /** * Store the current URL for the request if necessary. * * @param \Illuminate\Http\Request $request * @param \Illuminate\Contracts\Session\Session $session * @return void */ protected function storeCurrentUrl(Request $request, $session) { if ($request->method() === 'GET' && $request->route() instanceof Route && ! $request->ajax() && ! $request->prefetch()) { $session->setPreviousUrl($request->fullUrl()); } } /** * Add the session cookie to the application response. * * @param \Symfony\Component\HttpFoundation\Response $response * @param \Illuminate\Contracts\Session\Session $session * @return void */ protected function addCookieToResponse(Response $response, Session $session) { if ($this->sessionIsPersistent($config = $this->manager->getSessionConfig())) { $response->headers->setCookie(new Cookie( $session->getName(), $session->getId(), $this->getCookieExpirationDate(), $config['path'], $config['domain'], $config['secure'] ?? false, $config['http_only'] ?? true, false, $config['same_site'] ?? null )); } } /** * Save the session data to storage. * * @param \Illuminate\Http\Request $request * @return void */ protected function saveSession($request) { $this->manager->driver()->save(); } /** * Get the session lifetime in seconds. * * @return int */ protected function getSessionLifetimeInSeconds() { return ($this->manager->getSessionConfig()['lifetime'] ?? null) * 60; } /** * Get the cookie lifetime in seconds. * * @return \DateTimeInterface|int */ protected function getCookieExpirationDate() { $config = $this->manager->getSessionConfig(); return $config['expire_on_close'] ? 0 : Date::instance( Carbon::now()->addRealMinutes($config['lifetime']) ); } /** * Determine if a session driver has been configured. * * @return bool */ protected function sessionConfigured() { return ! is_null($this->manager->getSessionConfig()['driver'] ?? null); } /** * Determine if the configured session driver is persistent. * * @param array|null $config * @return bool */ protected function sessionIsPersistent(array $config = null) { $config = $config ?: $this->manager->getSessionConfig(); return ! is_null($config['driver'] ?? null); } /** * Resolve the given cache driver. * * @param string $driver * @return \Illuminate\Cache\Store */ protected function cache($driver) { return call_user_func($this->cacheFactoryResolver)->driver($driver); } }