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<?php |
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/* |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2014-2015 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 Jose; |
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use Jose\Algorithm\JWAManagerInterface; |
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use Jose\Algorithm\Signature\SignatureInterface; |
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use Jose\Behaviour\HasCheckerManager; |
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use Jose\Behaviour\HasCompressionManager; |
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use Jose\Behaviour\HasJWAManager; |
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use Jose\Behaviour\HasJWKFinderManager; |
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use Jose\Behaviour\HasKeyChecker; |
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use Jose\Behaviour\HasPayloadConverter; |
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use Jose\Checker\CheckerManagerInterface; |
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use Jose\Compression\CompressionManagerInterface; |
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use Jose\Finder\JWKFinderManagerInterface; |
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use Jose\Object\JWKInterface; |
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use Jose\Object\JWKSet; |
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use Jose\Object\JWKSetInterface; |
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use Jose\Object\JWSInterface; |
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use Jose\Object\JWTInterface; |
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use Jose\Payload\PayloadConverterManagerInterface; |
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/** |
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*/ |
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final class Verifier implements VerifierInterface |
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{ |
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use HasKeyChecker; |
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use HasJWAManager; |
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use HasJWKFinderManager; |
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use HasCheckerManager; |
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use HasPayloadConverter; |
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use HasCompressionManager; |
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/** |
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* Loader constructor. |
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* |
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* @param \Jose\Algorithm\JWAManagerInterface $jwa_manager |
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* @param \Jose\Finder\JWKFinderManagerInterface $jwk_finder_manager |
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* @param \Jose\Payload\PayloadConverterManagerInterface $payload_converter_manager |
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* @param \Jose\Compression\CompressionManagerInterface $compression_manager |
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* @param \Jose\Checker\CheckerManagerInterface $checker_manager |
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*/ |
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public function __construct( |
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JWAManagerInterface $jwa_manager, |
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JWKFinderManagerInterface $jwk_finder_manager, |
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PayloadConverterManagerInterface $payload_converter_manager, |
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CompressionManagerInterface $compression_manager, |
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CheckerManagerInterface $checker_manager) |
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{ |
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$this->setJWAManager($jwa_manager); |
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$this->setJWKFinderManager($jwk_finder_manager); |
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$this->setPayloadConverter($payload_converter_manager); |
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$this->setCompressionManager($compression_manager); |
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$this->setCheckerManager($checker_manager); |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public function verifySignature(JWSInterface $jws, JWKSetInterface $jwk_set = null, $detached_payload = null) |
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{ |
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if (null !== $detached_payload && !empty($jws->getPayload())) { |
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throw new \InvalidArgumentException('A detached payload is set, but the JWS already has a payload'); |
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} |
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$complete_header = $jws->getHeaders(); |
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if (null === $jwk_set) { |
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$jwk_set = $this->getKeysFromCompleteHeader( |
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$complete_header, |
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JWKFinderManagerInterface::KEY_TYPE_PUBLIC | JWKFinderManagerInterface::KEY_TYPE_SYMMETRIC | JWKFinderManagerInterface::KEY_TYPE_NONE |
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); |
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} |
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$input = $jws->getEncodedProtectedHeaders().'.'.(null === $detached_payload ? $jws->getEncodedPayload() : $detached_payload); |
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if (0 === count($jwk_set)) { |
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return false; |
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} |
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foreach ($jwk_set->getKeys() as $jwk) { |
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$algorithm = $this->getAlgorithm($complete_header, $jwk); |
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if (!$this->checkKeyUsage($jwk, 'verification')) { |
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continue; |
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} |
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if (!$this->checkKeyAlgorithm($jwk, $algorithm->getAlgorithmName())) { |
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continue; |
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} |
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try { |
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if (true === $algorithm->verify($jwk, $input, $jws->getSignature())) { |
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return true; |
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} |
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} catch (\InvalidArgumentException $e) { |
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//We do nothing, we continue with other keys |
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} |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function verify(JWTInterface $jwt) |
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{ |
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$this->getCheckerManager()->checkJWT($jwt); |
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return true; |
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} |
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/** |
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* @param array $header |
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* @param \Jose\Object\JWKInterface $key |
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* |
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* @return \Jose\Algorithm\Signature\SignatureInterface|null |
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*/ |
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private function getAlgorithm(array $header, JWKInterface $key) |
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{ |
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if (!array_key_exists('alg', $header)) { |
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//if (!$key->hasHeader('alg')) { |
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throw new \InvalidArgumentException("No 'alg' parameter set in the header or the key."); |
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}/* else { |
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$alg = $key->getHeader('alg'); |
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}*/ |
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//} else { |
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$alg = $header['alg']; |
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//} |
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$algorithm = $this->getJWAManager()->getAlgorithm($alg); |
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if (!$algorithm instanceof SignatureInterface) { |
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throw new \RuntimeException("The algorithm '$alg' is not supported or does not implement SignatureInterface."); |
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} |
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return $algorithm; |
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} |
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/** |
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* @param array $header |
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* @param int $key_type |
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* |
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* @return \Jose\Object\JWKSetInterface |
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*/ |
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private function getKeysFromCompleteHeader(array $header, $key_type) |
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{ |
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$keys = $this->getJWKFinderManager()->findJWK($header, $key_type); |
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$jwkset = new JWKSet($keys); |
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return $jwkset; |
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} |
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} |
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Spomky-Labs /
jose
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.