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<?php declare(strict_types=1); |
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/** |
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* Copyright 2022 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\StepupGateway\GatewayBundle\Sso2fa\Http; |
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use Psr\Log\LoggerInterface; |
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use Surfnet\StepupGateway\GatewayBundle\Sso2fa\Crypto\CryptoHelperInterface; |
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use Surfnet\StepupGateway\GatewayBundle\Sso2fa\Exception\CookieNotFoundException; |
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use Surfnet\StepupGateway\GatewayBundle\Sso2fa\ValueObject\Configuration; |
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use Surfnet\StepupGateway\GatewayBundle\Sso2fa\ValueObject\CookieValueInterface; |
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use Symfony\Component\HttpFoundation\Cookie; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\Response; |
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class CookieHelper implements CookieHelperInterface |
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{ |
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/** |
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* @var Configuration |
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*/ |
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private $configuration; |
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/** |
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* @var CryptoHelperInterface |
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*/ |
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private $encryptionHelper; |
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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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Configuration $configuration, |
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CryptoHelperInterface $encryptionHelper, |
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LoggerInterface $logger |
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) { |
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$this->configuration = $configuration; |
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$this->encryptionHelper = $encryptionHelper; |
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$this->logger = $logger; |
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} |
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public function write(Response $response, CookieValueInterface $value): void |
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{ |
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// The CookieValue is encrypted |
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$encryptedCookieValue = $this->encryptionHelper->encrypt($value); |
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$fingerprint = $this->hashFingerprint($encryptedCookieValue); |
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$this->logger->notice(sprintf('Writing a SSO on 2FA cookie with fingerprint %s', $fingerprint)); |
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// Create a Symfony HttpFoundation cookie object |
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$cookie = $this->createCookieWithValue($encryptedCookieValue); |
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// Which is added to the response headers |
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$response->headers->setCookie($cookie); |
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} |
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/** |
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* Retrieve the current cookie from the Request if it exists. |
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*/ |
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public function read(Request $request): CookieValueInterface |
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{ |
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if (!$request->cookies || !$request->cookies->has($this->configuration->getName())) { |
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throw new CookieNotFoundException(); |
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} |
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$cookie = $request->cookies->get($this->configuration->getName()); |
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$fingerprint = $this->hashFingerprint($cookie); |
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$this->logger->notice(sprintf('Reading a SSO on 2FA cookie with fingerprint %s', $fingerprint)); |
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return $this->encryptionHelper->decrypt($cookie); |
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} |
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public function fingerprint(Request $request): string |
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{ |
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if (!$request->cookies || !$request->cookies->has($this->configuration->getName())) { |
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throw new CookieNotFoundException(); |
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} |
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$cookie = $request->cookies->get($this->configuration->getName()); |
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return $this->hashFingerprint($cookie); |
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} |
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private function createCookieWithValue($value): Cookie |
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{ |
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return new Cookie( |
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$this->configuration->getName(), |
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$value, |
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$this->configuration->isPersistent() ? $this->getTimestamp($this->configuration->getLifetime()): 0, |
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'/', |
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null, |
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true, |
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true, |
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false, |
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Cookie::SAMESITE_STRICT |
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); |
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} |
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private function hashFingerprint(string $encryptedCookieValue): string |
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{ |
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return hash('sha256', $encryptedCookieValue); |
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} |
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private function getTimestamp(int $expiresInSeconds): int |
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{ |
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$currentTimestamp = time(); |
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return $currentTimestamp + $expiresInSeconds; |
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} |
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} |
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OpenConext /
Stepup-Gateway
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