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<?php |
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declare(strict_types=1); |
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/* |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2014-2018 Spomky-Labs |
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* |
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* This software may be modified and distributed under the terms |
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* of the MIT license. See the LICENSE file for details. |
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*/ |
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namespace OAuth2Framework\Component\OpenIdConnect; |
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use Jose\Component\Core\JWKSet; |
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use Jose\Component\Encryption\JWEBuilder; |
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use Jose\Component\Signature\JWSBuilder; |
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use OAuth2Framework\Component\Core\AccessToken\AccessToken; |
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use OAuth2Framework\Component\Core\Client\Client; |
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use OAuth2Framework\Component\Core\ResourceOwner\ResourceOwner; |
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use OAuth2Framework\Component\Core\UserAccount\UserAccount; |
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use OAuth2Framework\Component\TokenEndpoint\Extension\TokenEndpointExtension; |
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use OAuth2Framework\Component\TokenEndpoint\GrantType; |
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use OAuth2Framework\Component\TokenEndpoint\GrantTypeData; |
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use Psr\Http\Message\ServerRequestInterface; |
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class OpenIdConnectExtension implements TokenEndpointExtension |
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{ |
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/** |
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* @var JWKSet|null |
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*/ |
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private $signatureKeys = null; |
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/** |
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* @var JWSBuilder|null |
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*/ |
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private $jwsBuilder = null; |
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/** |
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* @var JWEBuilder|null |
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*/ |
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private $jweBuilder = null; |
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/** |
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* @var IdTokenBuilderFactory |
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*/ |
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private $idTokenBuilderFactory; |
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/** |
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* @var string |
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*/ |
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private $defaultSignatureAlgorithm; |
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/** |
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* OpenIdConnectExtension constructor. |
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* |
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* @param IdTokenBuilderFactory $idTokenBuilderFactory |
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* @param string $defaultSignatureAlgorithm |
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* @param JWSBuilder $jwsBuilder |
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* @param JWKSet $signatureKeys |
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*/ |
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public function __construct(IdTokenBuilderFactory $idTokenBuilderFactory, string $defaultSignatureAlgorithm, JWSBuilder $jwsBuilder, JWKSet $signatureKeys) |
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{ |
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$this->jwsBuilder = $jwsBuilder; |
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$this->signatureKeys = $signatureKeys; |
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$this->idTokenBuilderFactory = $idTokenBuilderFactory; |
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$this->defaultSignatureAlgorithm = $defaultSignatureAlgorithm; |
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} |
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/** |
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* @param JWEBuilder $jweBuilder |
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*/ |
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public function enableEncryption(JWEBuilder $jweBuilder) |
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{ |
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$this->jweBuilder = $jweBuilder; |
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} |
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public function beforeAccessTokenIssuance(ServerRequestInterface $request, GrantTypeData $grantTypeData, GrantType $grantType, callable $next): GrantTypeData |
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{ |
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return $next($request, $grantTypeData, $grantType); |
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} |
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public function afterAccessTokenIssuance(Client $client, ResourceOwner $resourceOwner, AccessToken $accessToken, callable $next): array |
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{ |
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$data = $next($client, $resourceOwner, $accessToken); |
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if ($resourceOwner instanceof UserAccount && $this->hasOpenIdScope($accessToken) && $accessToken->getMetadata()->has('redirect_uri')) { |
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$idToken = $this->issueIdToken($client, $resourceOwner, $accessToken); |
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$data['id_token'] = $idToken; |
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} |
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return $data; |
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} |
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/** |
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* @param Client $client |
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* @param UserAccount $userAccount |
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* @param AccessToken $accessToken |
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* |
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* @return string |
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*/ |
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private function issueIdToken(Client $client, UserAccount $userAccount, AccessToken $accessToken): string |
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{ |
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$redirectUri = $accessToken->getMetadata()->get('redirect_uri'); |
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$idTokenBuilder = $this->idTokenBuilderFactory->createBuilder($client, $userAccount, $redirectUri); |
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$requestedClaims = $this->getIdTokenClaims($accessToken); |
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$idTokenBuilder = $idTokenBuilder->withRequestedClaims($requestedClaims); |
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$idTokenBuilder = $idTokenBuilder->withAccessTokenId($accessToken->getAccessTokenId()); |
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if ($client->has('id_token_signed_response_alg')) { |
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$signatureAlgorithm = $client->get('id_token_signed_response_alg'); |
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$idTokenBuilder = $idTokenBuilder->withSignature($this->jwsBuilder, $this->signatureKeys, $signatureAlgorithm); |
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} else { |
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$idTokenBuilder = $idTokenBuilder->withSignature($this->jwsBuilder, $this->signatureKeys, $this->defaultSignatureAlgorithm); |
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} |
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if ($client->has('userinfo_encrypted_response_alg') && $client->has('userinfo_encrypted_response_enc') && null !== $this->jweBuilder) { |
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$keyEncryptionAlgorithm = $client->get('userinfo_encrypted_response_alg'); |
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$contentEncryptionAlgorithm = $client->get('userinfo_encrypted_response_enc'); |
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$idTokenBuilder = $idTokenBuilder->withEncryption($this->jweBuilder, $keyEncryptionAlgorithm, $contentEncryptionAlgorithm); |
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} |
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if ($client->has('require_auth_time')) { |
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$idTokenBuilder->withAuthenticationTime(); |
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} |
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$idTokenBuilder = $idTokenBuilder->withAccessToken($accessToken); |
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return $idTokenBuilder->build(); |
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} |
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/** |
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* @param AccessToken $accessToken |
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* |
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* @return array |
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*/ |
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private function getIdTokenClaims(AccessToken $accessToken): array |
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{ |
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if (!$accessToken->getMetadata()->has('requested_claims')) { |
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return []; |
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} |
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$requestedClaims = $accessToken->getMetadata()->get('requested_claims'); |
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$requestedClaims = \json_decode($requestedClaims, true); |
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if (!\is_array($requestedClaims)) { |
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throw new \InvalidArgumentException('Invalid claim request'); |
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} |
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if (true === \array_key_exists('id_token', $requestedClaims)) { |
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return $requestedClaims['id_token']; |
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} |
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return []; |
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} |
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private function hasOpenIdScope(AccessToken $accessToken): bool |
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{ |
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return $accessToken->getParameter()->has('scope') && \in_array('openid', \explode(' ', $accessToken->getParameter()->get('scope')), true); |
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} |
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} |
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OAuth2-Framework /
oauth2-framework
