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<?php |
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declare(strict_types=1); |
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namespace lepiaf\SapientBundle\EventSubscriber; |
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use lepiaf\SapientBundle\Service\PublicKeyGetter; |
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use ParagonIE\ConstantTime\Base64UrlSafe; |
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use ParagonIE\Sapient\CryptographyKeys\SigningSecretKey; |
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use ParagonIE\Sapient\Sapient; |
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use Psr\Http\Message\ResponseInterface; |
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use Symfony\Bridge\PsrHttpMessage\Factory\DiactorosFactory; |
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use Symfony\Bridge\PsrHttpMessage\Factory\HttpFoundationFactory; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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use Symfony\Component\HttpFoundation\Response; |
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use Symfony\Component\HttpKernel\Event\FilterResponseEvent; |
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use Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent; |
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use Symfony\Component\HttpKernel\KernelEvents; |
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class SignResponseSubscriber implements EventSubscriberInterface |
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{ |
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/** |
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* @var HttpFoundationFactory |
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*/ |
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private $httpFoundationFactory; |
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/** |
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* @var string |
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*/ |
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private $signPrivateKey; |
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/** |
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* @var Sapient |
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*/ |
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private $sapient; |
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/** |
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* @var DiactorosFactory |
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*/ |
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private $diactorosFactory; |
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/** |
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* @var string |
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*/ |
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private $signName; |
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public function __construct(HttpFoundationFactory $httpFoundationFactory, DiactorosFactory $diactorosFactory, Sapient $sapient, string $signPrivateKey, string $signName) |
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{ |
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$this->httpFoundationFactory = $httpFoundationFactory; |
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$this->diactorosFactory = $diactorosFactory; |
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$this->sapient = $sapient; |
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$this->signPrivateKey = $signPrivateKey; |
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$this->signName = $signName; |
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} |
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public static function getSubscribedEvents() |
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{ |
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return [ |
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KernelEvents::VIEW => ['signPsrResponse', -100], |
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KernelEvents::RESPONSE => ['signHttpFoundationResponse', -100], |
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]; |
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} |
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public function signHttpFoundationResponse(FilterResponseEvent $event): void |
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{ |
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$event->setResponse( |
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$this->signResponse($this->diactorosFactory->createResponse($event->getResponse())) |
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); |
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} |
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public function signPsrResponse(GetResponseForControllerResultEvent $event): void |
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{ |
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$response = $event->getControllerResult(); |
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if (!$response instanceof ResponseInterface) { |
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return; |
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} |
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$event->setResponse($this->signResponse($response)); |
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} |
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private function signResponse(ResponseInterface $response): Response |
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{ |
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$psrResponse = $this->sapient->signResponse($response, new SigningSecretKey(Base64UrlSafe::decode($this->signPrivateKey))); |
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$psrResponse = $psrResponse->withHeader(PublicKeyGetter::HEADER_SIGNER, $this->signName); |
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return $this->httpFoundationFactory->createResponse($psrResponse); |
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} |
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} |
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lepiaf /
sapient-bundle
