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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\Exception\SealResponseException; |
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use lepiaf\SapientBundle\Exception\WrongKeyException; |
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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\SealingPublicKey; |
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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\Request; |
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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 SealResponseSubscriber 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 PublicKeyGetter |
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*/ |
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private $publicKeyGetter; |
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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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public function __construct(HttpFoundationFactory $httpFoundationFactory, DiactorosFactory $diactorosFactory, Sapient $sapient, PublicKeyGetter $publicKeyGetter) |
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{ |
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$this->httpFoundationFactory = $httpFoundationFactory; |
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$this->diactorosFactory = $diactorosFactory; |
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$this->sapient = $sapient; |
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$this->publicKeyGetter = $publicKeyGetter; |
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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 => ['sealPsrResponse', -110], |
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KernelEvents::RESPONSE => ['sealHttpFoundationResponse', -110], |
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]; |
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} |
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public function sealHttpFoundationResponse(FilterResponseEvent $event): void |
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{ |
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$publicKey = $this->getSealingKey($event->getRequest()); |
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$psrResponse = $this->diactorosFactory->createResponse($event->getResponse()); |
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$event->setResponse($this->sealResponse($psrResponse, $publicKey)); |
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} |
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public function sealPsrResponse(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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$publicKey = $this->getSealingKey($event->getRequest()); |
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$event->setResponse($this->sealResponse($response, $publicKey)); |
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} |
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private function sealResponse(ResponseInterface $response, string $publicKey): Response |
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{ |
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try { |
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$psrResponse = $this->sapient->sealResponse($response, new SealingPublicKey(Base64UrlSafe::decode($publicKey))); |
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} catch (\RangeException $rangeException) { |
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throw new WrongKeyException($rangeException->getMessage()); |
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} catch (\SodiumException $sodiumException) { |
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throw new SealResponseException('Cannot seal response.'); |
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} |
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return $this->httpFoundationFactory->createResponse($psrResponse); |
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} |
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private function getSealingKey(Request $request) |
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{ |
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$psrRequest = $this->diactorosFactory->createRequest($request); |
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return $this->publicKeyGetter->getSealingKey($psrRequest); |
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} |
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} |
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lepiaf /
sapient-bundle
