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<?php |
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/** |
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* Created by PhpStorm. |
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* User: Alexandre |
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* Date: 14/03/2018 |
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* Time: 21:48 |
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*/ |
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namespace OAuth2\Extensions\OpenID; |
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use Firebase\JWT\JWT; |
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use Jose\Factory\JWKFactory; |
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use Jose\Factory\JWSFactory; |
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use Jose\Object\JWKSet; |
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use Jose\Signer; |
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use OAuth2\Credentials\AccessTokenInterface; |
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use OAuth2\Extensions\OpenID\Credentials\AuthorizationCodeInterface; |
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use OAuth2\Extensions\OpenID\Roles\Clients\ClientMetadataInterface; |
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use OAuth2\Helper; |
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use OAuth2\IdToken; |
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use OAuth2\IdTokenInterface; |
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use OAuth2\Roles\ClientInterface; |
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use OAuth2\Roles\ResourceOwnerInterface; |
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class IdTokenManager |
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{ |
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const KEY = 'AZE'; // Keys storage ? manager ? |
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/** |
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* @var JWT |
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*/ |
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private $jwt; |
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/** |
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* @var Config |
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*/ |
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private $config; |
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public function __construct(Config $config, JWT $jwt) |
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{ |
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$this->jwt = $jwt; |
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$this->config = $config; |
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} |
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public function decode(string $idToken): IdTokenInterface |
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{ |
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$claims = $this->jwt->decode($idToken, self::KEY, 'HS256'); |
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$idToken = new IdToken((array)$claims); |
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return $idToken; |
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} |
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public function issueIdToken(ClientInterface $client, |
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ResourceOwnerInterface $resourceOwner, |
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array $additionalClaims = []): string |
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{ |
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$metadata = $client->getMetadata(); |
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$idToken = array_merge([ |
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'iss' => $this->config->getIssuerIdentifier(), |
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'sub' => $resourceOwner->getIdentifier(), |
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'aud' => $client->getIdentifier(), |
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'exp' => time() + $this->config->getIdTokenLifetime(), |
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'iat' => time() |
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], $additionalClaims); |
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$alg = 'RS256'; |
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if ($metadata instanceof ClientMetadataInterface) { |
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$alg = $metadata->getIdTokenSignedResponseAlg() ?: 'RS256'; |
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} |
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$jwkSet = new JWKSet(); |
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$jwks = $metadata->getJwks(); |
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if (!empty($jwks)) { |
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$jwks = JWKFactory::createFromValues($jwks); |
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if ($jwks instanceof JWKSet) { |
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foreach ($jwks->getKeys() as $key) { |
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$jwkSet->addKey($key); |
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} |
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} else { |
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$jwkSet->addKey($jwks); |
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} |
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} |
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$jwku = $metadata->getJwksUri(); |
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if (!is_null($jwku)) { |
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foreach (JWKFactory::createFromJKU($jwku) as $key) { |
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$jwkSet->addKey($key); |
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} |
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} |
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$key = $jwkSet->selectKey('sig', $alg); |
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//var_dump($idToken);die; |
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$jws = JWSFactory::createJWS($idToken); |
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$jws = $jws->addSignatureInformation($key, |
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[ |
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'alg' => $alg, |
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'kid' => $key->get('kid') |
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] |
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); |
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$signer = Signer::createSigner([$alg]); |
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// Then we sign |
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$signer->sign($jws); |
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// var_dump($jws->toCompactJSON(0));die; |
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// echo '<pre>'; |
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// print_r($jws->getClaims()); |
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// print_r($jws->toCompactJSON(0)); |
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// echo '</pre>';die; |
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// var_dump($jws->toJSON()); |
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// die; |
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// $idToken = JWT::encode($idToken, $key, $alg); |
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return $jws->toCompactJSON(0); |
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} |
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public function getCodeHash(ClientInterface $client, AuthorizationCodeInterface $authorizationCode) |
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{ |
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return $this->getHash($client, $authorizationCode->getCode()); |
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} |
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public function getAccessTokenHash(ClientInterface $client, AccessTokenInterface $accessToken) |
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{ |
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return $this->getHash($client, $accessToken->getToken()); |
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} |
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public function getHash(ClientInterface $client, $target) |
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{ |
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$alg = 'RS256'; |
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$metadata = $client->getMetadata(); |
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if ($metadata instanceof ClientMetadataInterface) { |
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$alg = $metadata->getIdTokenSignedResponseAlg() ?: 'RS256'; |
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} |
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$macAlgorithm = substr($alg, -3); |
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if (!in_array($macAlgorithm, [256, 384, 512])) { |
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throw new \UnexpectedValueException('Client metadata Id token signed response alg value is unexpected. |
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It must end with "256", "384" or "513"'); |
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} |
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$macAlgorithm = 'sha' . $macAlgorithm; |
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$hash = hash($macAlgorithm, $target, true); |
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$hash = substr($hash, 0, strlen($hash) / 2); |
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return Helper::base64url_encode($hash); |
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} |
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} |
php-guard /
oauth-server
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