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<?php |
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namespace Krtv\Bundle\SingleSignOnIdentityProviderBundle\Manager; |
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use Symfony\Component\HttpFoundation\Session\SessionInterface; |
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use Symfony\Component\Routing\RouterInterface; |
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/** |
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* Class LogoutManager |
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* @package Krtv\Bundle\SingleSignOnIdentityProviderBundle\Manager |
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*/ |
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class LogoutManager |
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{ |
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const SERVICE_SESSION_NS = '_logout/processed'; |
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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 SessionInterface |
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*/ |
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private $session; |
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/** |
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* @var ServiceManager |
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*/ |
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private $serviceManager; |
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/** |
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* @param ServiceManager $serviceManager |
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* @param SessionInterface $session |
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* @param RouterInterface $router |
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*/ |
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public function __construct(ServiceManager $serviceManager, SessionInterface $session, RouterInterface $router) |
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{ |
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$this->serviceManager = $serviceManager; |
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$this->session = $session; |
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$this->router = $router; |
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} |
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/** |
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* @return string |
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*/ |
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public function getNextLogoutUrl() |
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{ |
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$referrerService = $this->serviceManager->getRequestService(); |
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if ($referrerService !== null) { |
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$this->addProcessedService($referrerService); |
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} |
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$availableServices = $this->serviceManager->getServices(); |
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$completedServices = $this->getCompletedServices(); |
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if (!empty($completedServices)){ |
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$first = array_values($completedServices)[0]; |
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$indexUrl = $this->serviceManager->getServiceManager($first)->getServiceIndexUrl(); |
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$this->session->set('_security.main.target_path', $indexUrl); |
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} |
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$nextService = null; |
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foreach ($availableServices as $service) { |
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$serviceManager = $this->serviceManager->getServiceManager($service); |
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$indexUrl = $serviceManager->getServiceIndexUrl(); |
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if ( in_array($service, $completedServices) || !$this->isHostUp($indexUrl) ){ |
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continue; |
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} |
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$nextService = $service; |
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break; |
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} |
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if ($nextService !== null) { |
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$serviceManager = $this->serviceManager->getServiceManager($nextService); |
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return $serviceManager->getServiceLogoutUrl(); |
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} |
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return $this->router->generate('_security_logout', array(), RouterInterface::ABSOLUTE_URL); |
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} |
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/** |
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* @param string $service |
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*/ |
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private function addProcessedService($service) |
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{ |
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$services = $this->getCompletedServices(); |
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$services[$service] = $service; |
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$this->session->set($this->getSessionKey(), $services); |
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} |
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/** |
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* @return mixed |
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*/ |
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private function getCompletedServices() |
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{ |
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return $this->session->get($this->getSessionKey(), array()); |
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} |
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/** |
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* @return string |
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*/ |
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private function getSessionKey() |
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{ |
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return static::SERVICE_SESSION_NS; |
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} |
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public function isHostUp($url) { |
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$handle = curl_init($url); |
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curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE); |
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curl_setopt($handle, CURLOPT_TIMEOUT, 5); |
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curl_setopt($handle, CURLOPT_CONNECTTIMEOUT, 5); |
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$response = curl_exec($handle); |
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/* Check for 404 (file not found). */ |
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$httpCode = curl_getinfo($handle, CURLINFO_HTTP_CODE); |
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curl_close($handle); |
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if($httpCode == 404 || $httpCode == 0) { |
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return false; |
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} |
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return true; |
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} |
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} |
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.