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<?php |
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/** |
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* Copyright 2014 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\Service; |
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use DateTime; |
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use DateTimeZone; |
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use SAML2\Assertion; |
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use SAML2\Constants; |
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use SAML2\Response; |
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use SAML2\XML\saml\SubjectConfirmation; |
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use SAML2\XML\saml\SubjectConfirmationData; |
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use Surfnet\SamlBundle\Entity\IdentityProvider; |
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use Surfnet\SamlBundle\SAML2\Attribute\AttributeDefinition; |
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use Surfnet\SamlBundle\SAML2\Attribute\AttributeDictionary; |
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use Surfnet\StepupBundle\Value\Loa; |
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use Surfnet\StepupGateway\GatewayBundle\Exception\RuntimeException; |
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use Surfnet\StepupGateway\GatewayBundle\Saml\AssertionSigningService; |
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use Surfnet\StepupGateway\GatewayBundle\Saml\Proxy\ProxyStateHandler; |
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/** |
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* @SuppressWarnings(PHPMD.CouplingBetweenObjects) |
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*/ |
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class ProxyResponseService |
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{ |
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/** |
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* @var \Surfnet\SamlBundle\Entity\IdentityProvider |
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*/ |
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private $hostedIdentityProvider; |
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/** |
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* @var \Surfnet\StepupGateway\GatewayBundle\Saml\Proxy\ProxyStateHandler |
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*/ |
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private $proxyStateHandler; |
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/** |
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* @var \Surfnet\SamlBundle\SAML2\Attribute\AttributeDictionary |
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*/ |
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private $attributeDictionary; |
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/** |
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* @var \Surfnet\SamlBundle\SAML2\Attribute\AttributeDefinition |
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*/ |
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private $eptiAttribute; |
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/** |
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* @var \DateTime |
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*/ |
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private $currentTime; |
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/** |
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* @var \Surfnet\StepupGateway\GatewayBundle\Saml\AssertionSigningService |
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*/ |
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private $assertionSigningService; |
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/** |
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* @var \Surfnet\StepupBundle\Value\Loa |
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*/ |
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private $intrinsicLoa; |
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public function __construct( |
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IdentityProvider $hostedIdentityProvider, |
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ProxyStateHandler $proxyStateHandler, |
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AssertionSigningService $assertionSigningService, |
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AttributeDictionary $attributeDictionary, |
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AttributeDefinition $eptiAttribute, |
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Loa $intrinsicLoa, |
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DateTime $now = null |
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) { |
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$this->hostedIdentityProvider = $hostedIdentityProvider; |
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$this->proxyStateHandler = $proxyStateHandler; |
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$this->assertionSigningService = $assertionSigningService; |
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$this->attributeDictionary = $attributeDictionary; |
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$this->eptiAttribute = $eptiAttribute; |
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$this->intrinsicLoa = $intrinsicLoa; |
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$this->currentTime = is_null($now) ? new DateTime('now', new DateTimeZone('UTC')): $now; |
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} |
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/** |
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* @param Assertion $assertion |
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* @param string $destination ACS URL |
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* @param string|null $loa |
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* @return Response |
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*/ |
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public function createProxyResponse(Assertion $assertion, $destination, $loa = null) |
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{ |
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$newAssertion = new Assertion(); |
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$newAssertion->setNotBefore($this->currentTime->getTimestamp()); |
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$newAssertion->setNotOnOrAfter($this->getTimestamp('PT5M')); |
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$newAssertion->setAttributes($assertion->getAttributes()); |
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$newAssertion->setIssuer($this->hostedIdentityProvider->getEntityId()); |
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$newAssertion->setIssueInstant($this->getTimestamp()); |
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$this->assertionSigningService->signAssertion($newAssertion); |
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$this->addSubjectConfirmationFor($newAssertion, $destination); |
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$translatedAssertion = $this->attributeDictionary->translate($assertion); |
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$eptiNameId = $translatedAssertion->getAttributeValue('eduPersonTargetedID'); |
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// Perform some input validation on the eptiNameId that was received. |
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if (is_null($eptiNameId)) { |
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throw new RuntimeException('The "urn:mace:dir:attribute-def:eduPersonTargetedID" is not present.'); |
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} elseif (!array_key_exists(0, $eptiNameId) || !$eptiNameId[0]->value) { |
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throw new RuntimeException( |
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'The "urn:mace:dir:attribute-def:eduPersonTargetedID" attribute does not contain a NameID with a value.' |
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); |
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} |
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$newAssertion->setNameId($eptiNameId[0]); |
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$newAssertion->setValidAudiences([$this->proxyStateHandler->getRequestServiceProvider()]); |
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$this->addAuthenticationStatementTo($newAssertion, $assertion); |
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if ($loa) { |
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$newAssertion->setAuthnContextClassRef($loa); |
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} |
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return $this->createNewAuthnResponse($newAssertion, $destination); |
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} |
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/** |
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* @param Assertion $newAssertion |
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* @param string $destination ACS URL |
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*/ |
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View Code Duplication |
private function addSubjectConfirmationFor(Assertion $newAssertion, $destination) |
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{ |
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$confirmation = new SubjectConfirmation(); |
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$confirmation->Method = Constants::CM_BEARER; |
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$confirmationData = new SubjectConfirmationData(); |
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$confirmationData->InResponseTo = $this->proxyStateHandler->getRequestId(); |
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$confirmationData->Recipient = $destination; |
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$confirmationData->NotOnOrAfter = $newAssertion->getNotOnOrAfter(); |
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$confirmation->SubjectConfirmationData = $confirmationData; |
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$newAssertion->setSubjectConfirmation([$confirmation]); |
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} |
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/** |
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* @param Assertion $newAssertion |
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* @param Assertion $assertion |
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*/ |
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private function addAuthenticationStatementTo(Assertion $newAssertion, Assertion $assertion) |
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{ |
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$newAssertion->setAuthnInstant($assertion->getAuthnInstant()); |
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$newAssertion->setAuthnContextClassRef((string) $this->intrinsicLoa); |
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$authority = $assertion->getAuthenticatingAuthority(); |
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$newAssertion->setAuthenticatingAuthority( |
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array_merge( |
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(empty($authority) ? [] : $authority), |
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[$assertion->getIssuer()] |
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) |
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); |
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} |
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/** |
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* @param Assertion $newAssertion |
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* @param string $destination ACS URL |
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* @return Response |
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*/ |
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View Code Duplication |
private function createNewAuthnResponse(Assertion $newAssertion, $destination) |
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{ |
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$response = new Response(); |
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$response->setAssertions([$newAssertion]); |
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$response->setIssuer($this->hostedIdentityProvider->getEntityId()); |
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$response->setIssueInstant($this->getTimestamp()); |
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$response->setDestination($destination); |
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$response->setInResponseTo($this->proxyStateHandler->getRequestId()); |
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return $response; |
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} |
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/** |
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* @param string $interval a \DateInterval compatible interval to skew the time with |
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* @return int |
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*/ |
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View Code Duplication |
private function getTimestamp($interval = null) |
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{ |
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$time = clone $this->currentTime; |
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if ($interval) { |
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$time->add(new \DateInterval($interval)); |
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} |
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return $time->getTimestamp(); |
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} |
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} |
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OpenConext /
Stepup-Gateway
Loading history...
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.