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<?php |
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namespace PeterColes\LiveOrLetDie\Middleware; |
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use Closure; |
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use Illuminate\Config\Repository as Config; |
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use Illuminate\Auth\AuthManager as Auth; |
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use Illuminate\Http\Request; |
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use Illuminate\Session\Store as Session; |
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class SessionTimeout |
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{ |
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protected $session; |
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protected $timeout; |
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protected $login; |
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protected $logout; |
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protected $auth; |
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public function __construct(Session $session, Config $config, Auth $auth) |
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{ |
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$this->session = $session; |
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$this->timeout = $config->get('session.lifetime') * 60; |
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$this->login = $config->get('liveorletdie.login', 'login'); |
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$this->logout = $config->get('liveorletdie.logout', 'logout'); |
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$this->auth = $auth; |
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} |
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/** |
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* Handle an incoming request. |
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* |
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* @param \Illuminate\Http\Request $request |
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* @param \Closure $next |
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* @return mixed |
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*/ |
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public function handle(Request $request, Closure $next) |
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{ |
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// don't interfere with normal logout requests |
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if ($request->is($this->logout)) { |
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$this->session->forget('last_activity'); |
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return $next($request); |
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} |
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// check if we should the authenticated session to end |
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// and if yes, terminate it |
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if ($this->endSession($request)) { |
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return $this->terminateAndRespond($request, $next); |
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} |
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// if we just want the time remaining claculate and return that |
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// this will stop any further processing, including preventing unintended extension of the underlying session |
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if ($request->is('session/remaining')) { |
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return response($this->timeout - (time() - $this->session->get('last_activity'))); |
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} |
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// for all other requests, including pings to extend the session, we update our timer and continue normally |
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$this->session->put('last_activity', time()); |
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$response = $next($request); |
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$this->afterRequest($request); |
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return $response; |
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} |
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/** |
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* Determine whether the session should be ended due to timeout or frontend request |
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* We whitelist the login page from this assessment |
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* |
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* @param \Illuminate\Http\Request $request |
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* @return boolean |
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*/ |
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protected function endSession(Request $request) |
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{ |
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return !$request->is($this->login) && ($this->timedOut() || $request->is('session/end')); |
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} |
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/** |
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* Determine whether timeout has occurred or been forced by other activity on the site |
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* If there's no data to do the timeout check, then we assume the session has been otherwise ended |
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* |
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* @return boolean |
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*/ |
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protected function timedOut() |
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{ |
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return !$this->session->has('last_activity') || (time() - $this->session->get('last_activity')) > $this->timeout || $this->auth->guest(); |
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} |
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/** |
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* Logout and clear our the last_activity timer - one or both of which actions may be redundant, but not harmful |
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* Then, for our package routes, compose a suitable response, and for other routes continue processing as normal |
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* |
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* @param \Illuminate\Http\Request $request |
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* @param Closure $next |
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* @return mixed |
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*/ |
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protected function terminateAndRespond(Request $request, Closure $next) |
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{ |
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$this->auth->logout(); |
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$this->session->forget('last_activity'); |
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if ($request->is('session/end')) { |
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return response('session ended', 200); |
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} |
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if ($request->is('session/remaining')) { |
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return response(0, 200); |
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} |
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if ($request->is('session/ping')) { |
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return response('trying to keep alive a session that has already expired', 400); |
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} |
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return $next($request); |
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} |
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/** |
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* After the request has been processed, check if it was for actually |
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* logging in and if not, i.e. redirect ot login page only, unset the |
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* last_activity timer. |
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* |
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* @param \Illuminate\Http\Request $request |
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* @return void |
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*/ |
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protected function afterRequest(Request $request) |
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{ |
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if ($request->is($this->login) && $this->auth->guest()) { |
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$this->session->forget('last_activity'); |
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} |
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} |
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} |
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petercoles /
Live-Or-Let-Die
