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<?php | |
/** | |
* OAuth 2.0 Refresh token grant | |
* | |
* @package league/oauth2-server | |
* @author Alex Bilbie <hello@alexbilbie.com> | |
* @copyright Copyright (c) Alex Bilbie | |
* @license http://mit-license.org/ | |
* @link https://github.com/thephpleague/oauth2-server | |
*/ | |
namespace League\OAuth2\Server\Grant; | |
use League\OAuth2\Server\Entity\AccessTokenEntity; | |
use League\OAuth2\Server\Entity\ClientEntity; | |
use League\OAuth2\Server\Entity\RefreshTokenEntity; | |
use League\OAuth2\Server\Event; | |
use League\OAuth2\Server\Exception; | |
use League\OAuth2\Server\Util\SecureKey; | |
/** | |
* Refresh token grant | |
*/ | |
class RefreshTokenGrant extends AbstractGrant | |
{ | |
/** | |
* {@inheritdoc} | |
*/ | |
protected $identifier = 'refresh_token'; | |
/** | |
* Refresh token TTL (default = 604800 | 1 week) | |
* | |
* @var integer | |
*/ | |
protected $refreshTokenTTL = 604800; | |
/** | |
* Rotate token (default = true) | |
* | |
* @var integer | |
*/ | |
protected $refreshTokenRotate = true; | |
/** | |
* Set the TTL of the refresh token | |
* | |
* @param int $refreshTokenTTL | |
* | |
* @return void | |
*/ | |
public function setRefreshTokenTTL($refreshTokenTTL) | |
{ | |
$this->refreshTokenTTL = $refreshTokenTTL; | |
} | |
/** | |
* Get the TTL of the refresh token | |
* | |
* @return int | |
*/ | |
public function getRefreshTokenTTL() | |
{ | |
return $this->refreshTokenTTL; | |
} | |
/** | |
* Set the rotation boolean of the refresh token | |
* @param bool $refreshTokenRotate | |
*/ | |
public function setRefreshTokenRotation($refreshTokenRotate = true) | |
{ | |
$this->refreshTokenRotate = $refreshTokenRotate; | |
} | |
/** | |
* Get rotation boolean of the refresh token | |
* | |
* @return bool | |
*/ | |
public function shouldRotateRefreshTokens() | |
{ | |
return $this->refreshTokenRotate; | |
} | |
/** | |
* {@inheritdoc} | |
*/ | |
public function completeFlow() | |
{ | |
$clientId = $this->server->getRequest()->request->get('client_id', $this->server->getRequest()->getUser()); | |
if (is_null($clientId)) { | |
throw new Exception\InvalidRequestException('client_id'); | |
} | |
$clientSecret = $this->server->getRequest()->request->get('client_secret', | |
$this->server->getRequest()->getPassword()); | |
if (is_null($clientSecret)) { | |
throw new Exception\InvalidRequestException('client_secret'); | |
} | |
// Validate client ID and client secret | |
$client = $this->server->getClientStorage()->get( | |
$clientId, | |
$clientSecret, | |
null, | |
$this->getIdentifier() | |
); | |
if (($client instanceof ClientEntity) === false) { | |
$this->server->getEventEmitter()->emit(new Event\ClientAuthenticationFailedEvent($this->server->getRequest())); | |
throw new Exception\InvalidClientException(); | |
} | |
$oldRefreshTokenParam = $this->server->getRequest()->request->get('refresh_token', null); | |
if ($oldRefreshTokenParam === null) { | |
throw new Exception\InvalidRequestException('refresh_token'); | |
} | |
// Validate refresh token | |
$oldRefreshToken = $this->server->getRefreshTokenStorage()->get($oldRefreshTokenParam); | |
if (($oldRefreshToken instanceof RefreshTokenEntity) === false) { | |
throw new Exception\InvalidRefreshException(); | |
} | |
// Ensure the old refresh token hasn't expired | |
if ($oldRefreshToken->isExpired() === true) { | |
throw new Exception\InvalidRefreshException(); | |
} | |
$oldAccessToken = $oldRefreshToken->getAccessToken(); | |
// Get the scopes for the original session | |
$session = $oldAccessToken->getSession(); | |
$scopes = $this->formatScopes($session->getScopes()); | |
// Get and validate any requested scopes | |
$requestedScopesString = $this->server->getRequest()->request->get('scope', ''); | |
$requestedScopes = $this->validateScopes($requestedScopesString, $client); | |
// If no new scopes are requested then give the access token the original session scopes | |
if (count($requestedScopes) === 0) { | |
$newScopes = $scopes; | |
} else { | |
// The OAuth spec says that a refreshed access token can have the original scopes or fewer so ensure | |
// the request doesn't include any new scopes | |
foreach ($requestedScopes as $requestedScope) { | |
if (!isset($scopes[$requestedScope->getId()])) { | |
throw new Exception\InvalidScopeException($requestedScope->getId()); | |
} | |
} | |
$newScopes = $requestedScopes; | |
} | |
// Generate a new access token and assign it the correct sessions | |
$newAccessToken = new AccessTokenEntity($this->server); | |
$newAccessToken->setId(SecureKey::generate()); | |
$newAccessToken->setExpireTime($this->getAccessTokenTTL() + time()); | |
$newAccessToken->setSession($session); | |
foreach ($newScopes as $newScope) { | |
$newAccessToken->associateScope($newScope); | |
} | |
// Expire the old token and save the new one | |
$oldAccessToken->expire(); | |
$newAccessToken->save(); | |
$this->server->getTokenType()->setSession($session); | |
$this->server->getTokenType()->setParam('access_token', $newAccessToken->getId()); | |
$this->server->getTokenType()->setParam('expires_in', $this->getAccessTokenTTL()); | |
if ($this->shouldRotateRefreshTokens()) { | |
// Expire the old refresh token | |
$oldRefreshToken->expire(); | |
// Generate a new refresh token | |
$newRefreshToken = new RefreshTokenEntity($this->server); | |
$newRefreshToken->setId(SecureKey::generate()); | |
$newRefreshToken->setExpireTime($this->getRefreshTokenTTL() + time()); | |
$newRefreshToken->setAccessToken($newAccessToken); | |
$newRefreshToken->save(); | |
$this->server->getTokenType()->setParam('refresh_token', $newRefreshToken->getId()); | |
} else { | |
$this->server->getTokenType()->setParam('refresh_token', $oldRefreshToken->getId()); | |
} | |
return $this->server->getTokenType()->generateResponse(); | |
} | |
} |