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<?php |
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/** |
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* OAuth 2.0 Refresh token grant. |
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* |
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* @author Alex Bilbie <[email protected]> |
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* @copyright Copyright (c) Alex Bilbie |
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* @license http://mit-license.org/ |
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* |
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* @link https://github.com/thephpleague/oauth2-server |
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*/ |
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namespace League\OAuth2\Server\Grant; |
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use DateInterval; |
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use Exception; |
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use League\OAuth2\Server\Exception\OAuthServerException; |
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use League\OAuth2\Server\Repositories\RefreshTokenRepositoryInterface; |
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use League\OAuth2\Server\RequestEvent; |
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use League\OAuth2\Server\ResponseTypes\ResponseTypeInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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/** |
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* Refresh token grant. |
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*/ |
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class RefreshTokenGrant extends AbstractGrant |
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{ |
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/** |
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* @param RefreshTokenRepositoryInterface $refreshTokenRepository |
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*/ |
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public function __construct(RefreshTokenRepositoryInterface $refreshTokenRepository) |
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{ |
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$this->setRefreshTokenRepository($refreshTokenRepository); |
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$this->refreshTokenTTL = new DateInterval('P1M'); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function respondToAccessTokenRequest( |
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ServerRequestInterface $request, |
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ResponseTypeInterface $responseType, |
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DateInterval $accessTokenTTL |
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) { |
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// Validate request |
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$client = $this->validateClient($request); |
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$oldRefreshToken = $this->validateOldRefreshToken($request, $client->getIdentifier()); |
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$scopes = $this->validateScopes($this->getRequestParameter( |
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'scope', |
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$request, |
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\implode(self::SCOPE_DELIMITER_STRING, $oldRefreshToken['scopes'])) |
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); |
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// The OAuth spec says that a refreshed access token can have the original scopes or fewer so ensure |
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// the request doesn't include any new scopes |
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foreach ($scopes as $scope) { |
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if (\in_array($scope->getIdentifier(), $oldRefreshToken['scopes'], true) === false) { |
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throw OAuthServerException::invalidScope($scope->getIdentifier()); |
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} |
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} |
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// Expire old tokens |
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$this->accessTokenRepository->revokeAccessToken($oldRefreshToken['access_token_id']); |
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$this->refreshTokenRepository->revokeRefreshToken($oldRefreshToken['refresh_token_id']); |
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// Issue and persist new access token |
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$accessToken = $this->issueAccessToken($accessTokenTTL, $client, $oldRefreshToken['user_id'], $scopes); |
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$this->getEmitter()->emit(new RequestEvent(RequestEvent::ACCESS_TOKEN_ISSUED, $request)); |
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$responseType->setAccessToken($accessToken); |
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// Issue and persist new refresh token if given |
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$refreshToken = $this->issueRefreshToken($accessToken); |
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if ($refreshToken !== null) { |
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$this->getEmitter()->emit(new RequestEvent(RequestEvent::REFRESH_TOKEN_ISSUED, $request)); |
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$responseType->setRefreshToken($refreshToken); |
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} |
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return $responseType; |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* @param string $clientId |
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* |
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* @throws OAuthServerException |
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* |
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* @return array |
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*/ |
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protected function validateOldRefreshToken(ServerRequestInterface $request, $clientId) |
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{ |
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$encryptedRefreshToken = $this->getRequestParameter('refresh_token', $request); |
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if (\is_null($encryptedRefreshToken)) { |
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throw OAuthServerException::invalidRequest('refresh_token'); |
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} |
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// Validate refresh token |
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try { |
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$refreshToken = $this->decrypt($encryptedRefreshToken); |
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} catch (Exception $e) { |
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throw OAuthServerException::invalidRefreshToken('Cannot decrypt the refresh token', $e); |
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} |
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$refreshTokenData = \json_decode($refreshToken, true); |
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if ($refreshTokenData['client_id'] !== $clientId) { |
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$this->getEmitter()->emit(new RequestEvent(RequestEvent::REFRESH_TOKEN_CLIENT_FAILED, $request)); |
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throw OAuthServerException::invalidRefreshToken('Token is not linked to client'); |
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} |
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if ($refreshTokenData['expire_time'] < \time()) { |
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throw OAuthServerException::invalidRefreshToken('Token has expired'); |
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} |
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if ($this->refreshTokenRepository->isRefreshTokenRevoked($refreshTokenData['refresh_token_id']) === true) { |
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throw OAuthServerException::invalidRefreshToken('Token has been revoked'); |
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} |
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return $refreshTokenData; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getIdentifier() |
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{ |
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return 'refresh_token'; |
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} |
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} |
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thephpleague /
oauth2-server
