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<?php |
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/** |
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* @author Steve Rhoades <[email protected]> |
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* @license http://opensource.org/licenses/MIT MIT |
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*/ |
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namespace OpenIDConnectServer; |
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use Lcobucci\JWT\Signer\Key\InMemory; |
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use Lcobucci\JWT\Signer\Key\LocalFileReference; |
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use OpenIDConnectServer\Repositories\IdentityProviderInterface; |
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use OpenIDConnectServer\Entities\ClaimSetInterface; |
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use League\OAuth2\Server\Entities\UserEntityInterface; |
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use League\OAuth2\Server\Entities\AccessTokenEntityInterface; |
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use League\OAuth2\Server\Entities\ScopeEntityInterface; |
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use League\OAuth2\Server\ResponseTypes\BearerTokenResponse; |
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use Lcobucci\JWT\Signer\Rsa\Sha256; |
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use Lcobucci\JWT\Encoding\ChainedFormatter; |
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use Lcobucci\JWT\Token\Builder; |
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use Lcobucci\JWT\Encoding\JoseEncoder; |
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class IdTokenResponse extends BearerTokenResponse |
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{ |
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/** |
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* @var IdentityProviderInterface |
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*/ |
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protected $identityProvider; |
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/** |
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* @var ClaimExtractor |
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*/ |
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protected $claimExtractor; |
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/** |
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* @var string|null |
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*/ |
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protected $keyIdentifier; |
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public function __construct( |
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IdentityProviderInterface $identityProvider, |
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ClaimExtractor $claimExtractor, |
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?string $keyIdentifier = null |
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) { |
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$this->identityProvider = $identityProvider; |
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$this->claimExtractor = $claimExtractor; |
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$this->keyIdentifier = $keyIdentifier; |
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} |
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protected function getBuilder(AccessTokenEntityInterface $accessToken, UserEntityInterface $userEntity) |
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{ |
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$claimsFormatter = ChainedFormatter::withUnixTimestampDates(); |
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$builder = new Builder(new JoseEncoder(), $claimsFormatter); |
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// Since version 8.0 league/oauth2-server returns \DateTimeImmutable |
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$expiresAt = $accessToken->getExpiryDateTime(); |
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if ($expiresAt instanceof \DateTime) { |
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$expiresAt = \DateTimeImmutable::createFromMutable($expiresAt); |
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} |
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// Add required id_token claims |
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return $builder |
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->permittedFor($accessToken->getClient()->getIdentifier()) |
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->issuedBy('https://' . $_SERVER['HTTP_HOST']) |
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->issuedAt(new \DateTimeImmutable()) |
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->expiresAt($expiresAt) |
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->relatedTo($userEntity->getIdentifier()); |
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} |
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/** |
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* @param AccessTokenEntityInterface $accessToken |
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* @return array |
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*/ |
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protected function getExtraParams(AccessTokenEntityInterface $accessToken): array |
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{ |
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if (false === $this->isOpenIDRequest($accessToken->getScopes())) { |
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return []; |
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} |
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/** @var UserEntityInterface $userEntity */ |
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$userEntity = $this->identityProvider->getUserEntityByIdentifier($accessToken->getUserIdentifier()); |
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if (false === is_a($userEntity, UserEntityInterface::class)) { |
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throw new \RuntimeException('UserEntity must implement UserEntityInterface'); |
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} else if (false === is_a($userEntity, ClaimSetInterface::class)) { |
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throw new \RuntimeException('UserEntity must implement ClaimSetInterface'); |
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} |
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// Add required id_token claims |
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$builder = $this->getBuilder($accessToken, $userEntity); |
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// Need a claim factory here to reduce the number of claims by provided scope. |
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$claims = $this->claimExtractor->extract($accessToken->getScopes(), $userEntity->getClaims()); |
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foreach ($claims as $claimName => $claimValue) { |
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$builder = $builder->withClaim($claimName, $claimValue); |
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} |
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if ($this->keyIdentifier !== null) { |
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$builder = $builder->withHeader('kid', $this->keyIdentifier); |
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} |
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if ( |
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method_exists($this->privateKey, 'getKeyContents') |
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&& !empty($this->privateKey->getKeyContents()) |
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) { |
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$key = InMemory::plainText($this->privateKey->getKeyContents(), (string)$this->privateKey->getPassPhrase()); |
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} else { |
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$key = LocalFileReference::file($this->privateKey->getKeyPath(), (string)$this->privateKey->getPassPhrase()); |
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} |
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$token = $builder->getToken(new Sha256(), $key); |
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return [ |
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'id_token' => $token->toString() |
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]; |
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} |
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/** |
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* @param ScopeEntityInterface[] $scopes |
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* @return bool |
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*/ |
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private function isOpenIDRequest($scopes) |
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{ |
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// Verify scope and make sure openid exists. |
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$valid = false; |
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foreach ($scopes as $scope) { |
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if ($scope->getIdentifier() === 'openid') { |
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$valid = true; |
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break; |
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} |
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} |
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return $valid; |
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} |
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} |
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steverhoades /
oauth2-openid-connect-server
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