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<?php |
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/** |
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* Copyright 2023 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\SecondFactorOnlyBundle\Service\Gateway; |
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use Surfnet\SamlBundle\Http\PostBinding; |
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use Surfnet\StepupBundle\Service\SecondFactorTypeService; |
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use Surfnet\StepupBundle\Value\SecondFactorType; |
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use Surfnet\StepupGateway\GatewayBundle\Service\SecondFactor\SecondFactorInterface; |
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use Surfnet\StepupGateway\SamlStepupProviderBundle\Provider\ProviderRepository; |
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use Surfnet\StepupGateway\SecondFactorOnlyBundle\Exception\ReceivedInvalidSubjectNameIdException; |
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use Symfony\Component\HttpFoundation\Request; |
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class ResponseValidator |
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{ |
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/** @var SecondFactorTypeService */ |
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private $secondFactorTypeService; |
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/** @var ProviderRepository */ |
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private $providerRepository; |
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/** @var PostBinding */ |
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private $postBinding; |
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public function __construct( |
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SecondFactorTypeService $secondFactorTypeService, |
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ProviderRepository $providerRepository, |
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PostBinding $postBinding |
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) { |
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$this->secondFactorTypeService = $secondFactorTypeService; |
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$this->providerRepository = $providerRepository; |
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$this->postBinding = $postBinding; |
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} |
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/** |
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* |
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*/ |
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public function validate(Request $request, SecondFactorInterface $secondFactor, string $nameIdFromState): void |
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{ |
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$secondFactorType = new SecondFactorType($secondFactor->getSecondFactorType()); |
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$hasSamlResponse = $request->request->has('SAMLResponse'); |
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// When dealing with a GSSP response. It is advised to receive the SAML response through POST Binding, |
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// testing the preconditions. |
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if ($hasSamlResponse && $this->secondFactorTypeService->isGssf($secondFactorType)) { |
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$provider = $this->providerRepository->get($secondFactorType->getSecondFactorType()); |
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// Receive the response via POST Binding, this will test all the regular pre-conditions |
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$samlResponse = $this->postBinding->processResponse( |
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$request, |
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$provider->getRemoteIdentityProvider(), |
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$provider->getServiceProvider() |
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); |
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$subjectNameIdFromResponse = $samlResponse->getNameId()->getValue(); |
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// Additionally test if the name id from the GSSP matches the SF identifier that we have in state |
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if ($subjectNameIdFromResponse !== $secondFactor->getSecondFactorIdentifier()) { |
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throw new ReceivedInvalidSubjectNameIdException( |
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sprintf( |
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'The nameID received from the GSSP (%s) did not match the selected second factor (%s). This '. |
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'might be an indication someone is tampering with a GSSP. The authentication was started by %s', |
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$subjectNameIdFromResponse, |
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$secondFactor->getSecondFactorIdentifier(), |
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$nameIdFromState |
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) |
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); |
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} |
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} |
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} |
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} |
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OpenConext /
Stepup-Gateway
