3 namespace BookStack\Access\Oidc;
5 use Psr\Http\Message\ResponseInterface;
7 class OidcUserinfoResponse implements ProvidesClaims
9 protected array $claims = [];
10 protected ?OidcJwtWithClaims $jwt = null;
12 public function __construct(ResponseInterface $response, string $issuer, array $keys)
14 $contentTypeHeaderValue = $response->getHeader('Content-Type')[0] ?? '';
15 $contentType = strtolower(trim(explode(';', $contentTypeHeaderValue, 2)[0]));
17 if ($contentType === 'application/json') {
18 $this->claims = json_decode($response->getBody()->getContents(), true);
21 if ($contentType === 'application/jwt') {
22 $this->jwt = new OidcJwtWithClaims($response->getBody()->getContents(), $issuer, $keys);
23 $this->claims = $this->jwt->getAllClaims();
28 * @throws OidcInvalidTokenException
30 public function validate(string $idTokenSub, string $clientId): bool
32 if (!is_null($this->jwt)) {
33 $this->jwt->validateCommonTokenDetails($clientId);
36 $sub = $this->getClaim('sub');
38 // Spec: v1.0 5.3.2: The sub (subject) Claim MUST always be returned in the UserInfo Response.
39 if (!is_string($sub) || empty($sub)) {
40 throw new OidcInvalidTokenException("No valid subject value found in userinfo data");
43 // Spec: v1.0 5.3.2: The sub Claim in the UserInfo Response MUST be verified to exactly match the sub Claim in the ID Token;
44 // if they do not match, the UserInfo Response values MUST NOT be used.
45 if ($idTokenSub !== $sub) {
46 throw new OidcInvalidTokenException("Subject value provided in the userinfo endpoint does not match the provided ID token value");
49 // Spec v1.0 5.3.4 Defines the following:
50 // Verify that the OP that responded was the intended OP through a TLS server certificate check, per RFC 6125 [RFC6125].
51 // This is effectively done as part of the HTTP request we're making through CURLOPT_SSL_VERIFYHOST on the request.
52 // If the Client has provided a userinfo_encrypted_response_alg parameter during Registration, decrypt the UserInfo Response using the keys specified during Registration.
53 // We don't currently support JWT encryption for OIDC
54 // If the response was signed, the Client SHOULD validate the signature according to JWS [JWS].
55 // This is done as part of the validateCommonClaims above.
60 public function getClaim(string $claim): mixed
62 return $this->claims[$claim] ?? null;
65 public function getAllClaims(): array