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<?php |
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declare(strict_types=1); |
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namespace TMV\OpenIdClient\Token; |
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use function array_filter; |
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use function array_key_exists; |
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use function array_merge; |
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use function explode; |
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use function is_array; |
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use Jose\Component\Checker\ClaimCheckerManager; |
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use function json_decode; |
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use function TMV\OpenIdClient\base64url_decode; |
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use TMV\OpenIdClient\ClaimChecker\AtHashChecker; |
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use TMV\OpenIdClient\ClaimChecker\CHashChecker; |
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use TMV\OpenIdClient\ClaimChecker\SHashChecker; |
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use TMV\OpenIdClient\Client\ClientInterface; |
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use TMV\OpenIdClient\Exception\InvalidArgumentException; |
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use TMV\OpenIdClient\Session\AuthSessionInterface; |
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class TokenSetVerifier implements TokenSetVerifierInterface |
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{ |
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/** @var IdTokenVerifierInterface */ |
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private $idTokenVerifier; |
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/** |
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* TokenSetVerifier constructor. |
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* |
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* @param null|IdTokenVerifierInterface $idTokenVerifier |
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*/ |
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public function __construct(?IdTokenVerifierInterface $idTokenVerifier = null) |
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{ |
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$this->idTokenVerifier = $idTokenVerifier ?: new IdTokenVerifier(); |
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} |
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/** |
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* @return IdTokenVerifierInterface |
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*/ |
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public function getIdTokenVerifier(): IdTokenVerifierInterface |
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{ |
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return $this->idTokenVerifier; |
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} |
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public function validate( |
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TokenSetInterface $tokenSet, |
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ClientInterface $client, |
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?AuthSessionInterface $authSession = null, |
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bool $fromAuthorization = true, |
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?int $maxAge = null |
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): void { |
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$idToken = $tokenSet->getIdToken(); |
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if (null === $idToken) { |
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throw new InvalidArgumentException('No id_token in token set'); |
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} |
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$this->getIdTokenVerifier()->validateIdToken($client, $idToken, $authSession); |
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$metadata = $client->getMetadata(); |
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$header = json_decode(base64url_decode(explode('.', $idToken)[0] ?? '{}'), true); |
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$payload = json_decode(base64url_decode(explode('.', $idToken)[1] ?? '{}'), true); |
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if (! is_array($payload)) { |
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throw new InvalidArgumentException('Unable to decode token payload'); |
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} |
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$claimCheckers = []; |
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$requiredClaims = []; |
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if ((int) $maxAge > 0 || (null !== $maxAge && null !== $metadata->get('require_auth_time'))) { |
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$requiredClaims[] = 'auth_time'; |
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} |
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if ($fromAuthorization) { |
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$requiredClaims = array_merge($requiredClaims, [ |
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null !== $tokenSet->getAccessToken() ? 'at_hash' : null, |
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null !== $tokenSet->getCode() ? 'c_hash' : null, |
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]); |
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if (array_key_exists('s_hash', $payload)) { |
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$state = null !== $authSession ? $authSession->getState() : null; |
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if (null === $state) { |
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throw new InvalidArgumentException('Cannot verify s_hash, "state" not provided'); |
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} |
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$claimCheckers[] = new SHashChecker($state, $header['alg'] ?? ''); |
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} |
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} |
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$accessToken = $tokenSet->getAccessToken(); |
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if (null !== $accessToken) { |
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$claimCheckers[] = new AtHashChecker($accessToken, $header['alg'] ?? ''); |
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} |
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$code = $tokenSet->getCode(); |
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if (null !== $code) { |
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$claimCheckers[] = new CHashChecker($code, $header['alg'] ?? ''); |
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} |
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$claimCheckerManager = new ClaimCheckerManager(array_filter($claimCheckers)); |
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$claimCheckerManager->check($payload, array_filter($requiredClaims)); |
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} |
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} |
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thomasvargiu /
php-openid-client
