/**
* @param \Jose\Object\JWSInterface $jws
* @param array $data
*/
private static function populatePayload(JWSInterface &$jws, array $data)
{
$is_encoded = null;
foreach ($jws->getSignatures() as $signature) {
if (null === $is_encoded) {
$is_encoded = self::isPayloadEncoded($signature);
}
Assertion::eq($is_encoded, self::isPayloadEncoded($signature), 'Foreign payload encoding detected. The JWS cannot be loaded.');
}
if (array_key_exists('payload', $data)) {
$payload = $data['payload'];
$jws = $jws->withAttachedPayload();
$jws = $jws->withEncodedPayload($payload);
if (false !== $is_encoded) {
$payload = Base64Url::decode($payload);
}
$json = json_decode($payload, true);
if (null !== $json && !empty($payload)) {
$payload = $json;
}
$jws = $jws->withPayload($payload);
} else {
$jws = $jws->withDetachedPayload();
}
}
/**
* {@inheritdoc}
*/
public function checkJWS(Object\JWSInterface $jws, $signature)
{
Assertion::integer($signature);
Assertion::lessThan($signature, $jws->countSignatures());
$checked_claims = $this->checkJWT($jws);
$protected_headers = $jws->getSignature($signature)->getProtectedHeaders();
$headers = $jws->getSignature($signature)->getHeaders();
$this->checkHeaders($protected_headers, $headers, $checked_claims);
}
/**
* @param \Jose\Object\JWSInterface $jws
* @param \Jose\Object\SignatureInterface $signature
*
* @return string
*/
private function getInputToSign(Object\JWSInterface $jws, Object\SignatureInterface $signature)
{
$this->checkB64HeaderAndCrit($signature);
$encoded_protected_headers = $signature->getEncodedProtectedHeaders();
$payload = $jws->getPayload();
if (!$signature->hasProtectedHeader('b64') || true === $signature->getProtectedHeader('b64')) {
$encoded_payload = Base64Url::encode(is_string($payload) ? $payload : json_encode($payload));
return sprintf('%s.%s', $encoded_protected_headers, $encoded_payload);
}
return sprintf('%s.%s', $encoded_protected_headers, $payload);
}
/**
* @param \Jose\Object\JWSInterface $jws
*
* @return \Jose\Algorithm\Signature\SignatureInterface
*/
private function getAlgorithm(JWSInterface $jws)
{
if (!$jws->hasHeader('alg')) {
throw new \InvalidArgumentException('No "alg" parameter set in the header.');
}
$alg = $jws->getHeader('alg');
$algorithm = $this->getJWAManager()->getAlgorithm($alg);
if (!$algorithm instanceof SignatureInterface) {
throw new \RuntimeException(sprintf('The algorithm "%s" is not supported or does not implement SignatureInterface.', $alg));
}
return $algorithm;
}
/**
* @param \Jose\Object\JWSInterface $jws
* @param \OAuth2\Client\JWTClientInterface $client
*
* @throws \OAuth2\Exception\BaseExceptionInterface
*/
public function verifySignature(JWSInterface $jws, JWTClientInterface $client)
{
if (!in_array($jws->getHeader('alg'), $client->getAllowedSignatureAlgorithms())) {
throw $this->getExceptionManager()->getException(ExceptionManagerInterface::BAD_REQUEST, ExceptionManagerInterface::INVALID_REQUEST, sprintf('Algorithm not allowed. Authorized algorithms: %s.', json_encode($client->getAllowedSignatureAlgorithms())));
}
try {
if (false === $this->verifier->verify($jws, $this->key_set)) {
throw $this->getExceptionManager()->getException(ExceptionManagerInterface::BAD_REQUEST, ExceptionManagerInterface::INVALID_REQUEST, 'Invalid signature.');
}
} catch (\Exception $e) {
throw $this->getExceptionManager()->getException(ExceptionManagerInterface::BAD_REQUEST, ExceptionManagerInterface::INVALID_REQUEST, $e->getMessage());
}
}
/**
* @param \Jose\Object\JWSInterface $jws
* @param null|string $detached_payload
*/
private function checkPayload(Object\JWSInterface $jws, $detached_payload = null)
{
Assertion::false(null !== $detached_payload && !empty($jws->getPayload()), 'A detached payload is set, but the JWS already has a payload.');
Assertion::true(!empty($jws->getPayload()) || null !== $detached_payload, 'No payload.');
}
/**
* {@inheritdoc}
*/
public function verify(Object\JWSInterface $jws, Object\JWKSetInterface $signature_key_set, $detached_payload = null)
{
Assertion::inArray($jws->getSignature(0)->getProtectedHeader('alg'), $this->getSupportedSignatureAlgorithms(), sprintf('The signature algorithm "%s" is not supported or not allowed.', $jws->getSignature(0)->getProtectedHeader('alg')));
$index = null;
$this->verifier->verifyWithKeySet($jws, $signature_key_set, $detached_payload, $index);
Assertion::notNull($index, 'JWS signature(s) verification failed.');
$this->checker_manager->checkJWS($jws, $index);
return $index;
}
