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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\SamlBundle\Monolog\SamlAuthenticationLogger; |
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use Surfnet\StepupSelfService\SelfServiceBundle\Security\Authentication\AuthenticatedSessionStateHandler; |
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use Surfnet\StepupSelfService\SelfServiceBundle\Security\Authentication\SamlAuthenticationStateHandler; |
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use Surfnet\StepupSelfService\SelfServiceBundle\Security\Authentication\SamlInteractionProvider; |
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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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class InitiateSamlAuthenticationHandler 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 AuthenticatedSessionStateHandler |
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*/ |
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private $authenticatedSession; |
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/** |
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* @var SamlAuthenticationStateHandler |
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*/ |
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private $samlAuthenticationStateHandler; |
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/** |
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* @var SamlInteractionProvider |
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*/ |
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private $samlInteractionProvider; |
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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 SamlAuthenticationLogger |
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*/ |
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private $authenticationLogger; |
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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 $authenticatedSession, |
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SamlAuthenticationStateHandler $samlAuthenticationStateHandler, |
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SamlInteractionProvider $samlInteractionProvider, |
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RouterInterface $router, |
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SamlAuthenticationLogger $authenticationLogger, |
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LoggerInterface $logger |
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) { |
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$this->tokenStorage = $tokenStorageInterface; |
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$this->authenticatedSession = $authenticatedSession; |
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$this->samlAuthenticationStateHandler = $samlAuthenticationStateHandler; |
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$this->samlInteractionProvider = $samlInteractionProvider; |
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$this->router = $router; |
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$this->authenticationLogger = $authenticationLogger; |
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$this->logger = $logger; |
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} |
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public function process(GetResponseEvent $event) |
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{ |
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$acsUri = $this->router->generate('selfservice_serviceprovider_consume_assertion'); |
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// we have no logged in user, and have sent an authentication request, but do not receive a response POSTed |
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// back to our ACS. This means that a user may have inadvertedly triggered the sending of an AuthnRequest |
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// one of the common causes of this is the prefetching of pages by browsers to give users the illusion of speed. |
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// In any case, we reset the login and send a new AuthnRequest. |
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if ($this->tokenStorage->getToken() === null |
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&& $this->samlInteractionProvider->isSamlAuthenticationInitiated() |
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&& $event->getRequest()->getMethod() !== 'POST' |
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&& $event->getRequest()->getRequestUri() !== $acsUri |
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) { |
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$this->logger->notice( |
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'No authenticated user, a AuthnRequest was sent, but the current request is not a POST to our ACS ' |
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. 'thus we assume the user attempts to access the application again (possibly after a browser ' |
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. 'prefetch). Resetting the login state so that a new AuthnRequest can be sent.' |
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); |
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$this->samlInteractionProvider->reset(); |
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} |
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if ($this->tokenStorage->getToken() === null |
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&& !$this->samlInteractionProvider->isSamlAuthenticationInitiated() |
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) { |
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$this->logger->notice('No authenticated user, no saml AuthnRequest pending, sending new AuthnRequest'); |
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$this->authenticatedSession->setCurrentRequestUri($event->getRequest()->getUri()); |
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$event->setResponse($this->samlInteractionProvider->initiateSamlRequest()); |
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$logger = $this->authenticationLogger->forAuthentication( |
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$this->samlAuthenticationStateHandler->getRequestId() |
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); |
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$logger->notice('Sending AuthnRequest'); |
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return; |
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} |
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if ($this->nextHandler) { |
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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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OpenConext /
Stepup-SelfService
