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<?php |
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namespace PHPHub\OAuth; |
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use League\OAuth2\Server\Entity\AccessTokenEntity; |
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use League\OAuth2\Server\Entity\ClientEntity; |
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use League\OAuth2\Server\Entity\RefreshTokenEntity; |
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use League\OAuth2\Server\Entity\SessionEntity; |
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use League\OAuth2\Server\Event\ClientAuthenticationFailedEvent; |
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use League\OAuth2\Server\Event\UserAuthenticationFailedEvent; |
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use League\OAuth2\Server\Exception\InvalidClientException; |
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use League\OAuth2\Server\Exception\InvalidCredentialsException; |
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use League\OAuth2\Server\Exception\InvalidRequestException; |
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use League\OAuth2\Server\Exception\ServerErrorException; |
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use League\OAuth2\Server\Grant\AbstractGrant; |
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use League\OAuth2\Server\Util\SecureKey; |
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use Symfony\Component\HttpFoundation\Request; |
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abstract class BaseGrant extends AbstractGrant |
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{ |
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/** |
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* Grant identifier. |
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* |
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* @var string |
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*/ |
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protected $identifier = null; |
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/** |
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* Response type. |
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* |
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* @var string |
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*/ |
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protected $responseType; |
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/** |
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* Callback to authenticate a user's name and password. |
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* |
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* @var callable |
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*/ |
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protected $callback; |
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/** |
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* Access token expires in override. |
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* |
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* @var int |
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*/ |
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protected $accessTokenTTL; |
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/** |
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* Set the callback to verify a user's username and password. |
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* |
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* @param callable $callback The callback function |
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*/ |
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public function setVerifyCredentialsCallback(callable $callback) |
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{ |
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$this->callback = $callback; |
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} |
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/** |
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* Return the callback function. |
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* |
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* @return callable |
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* |
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* @throws |
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*/ |
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protected function getVerifyCredentialsCallback() |
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{ |
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if (is_null($this->callback) || ! is_callable($this->callback)) { |
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throw new ServerErrorException('Null or non-callable callback set on Password grant'); |
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} |
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return $this->callback; |
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} |
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/** |
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* Complete the password grant. |
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* |
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* @return array |
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* |
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* @throws |
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*/ |
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public function completeFlow() |
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{ |
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$client = $this->getClient(); |
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$userId = $this->getUserId($this->server->getRequest(), $this->getVerifyCredentialsCallback()); |
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if ($userId === false) { |
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$this->server->getEventEmitter()->emit(new UserAuthenticationFailedEvent($this->server->getRequest())); |
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throw new InvalidCredentialsException(); |
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} |
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// Create a new session |
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$session = new SessionEntity($this->server); |
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$session->setOwner('user', $userId); |
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$session->associateClient($client); |
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// Generate an access token |
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$accessToken = new AccessTokenEntity($this->server); |
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$accessToken->setId(SecureKey::generate()); |
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$accessToken->setExpireTime($this->getAccessTokenTTL() + time()); |
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$this->server->getTokenType()->setSession($session); |
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$this->server->getTokenType()->setParam('access_token', $accessToken->getId()); |
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$this->server->getTokenType()->setParam('expires_in', $this->getAccessTokenTTL()); |
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// Save everything |
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$session->save(); |
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$accessToken->setSession($session); |
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$accessToken->save(); |
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// Associate a refresh token if set |
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if ($this->server->hasGrantType('refresh_token')) { |
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$refreshToken = new RefreshTokenEntity($this->server); |
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$refreshToken->setId(SecureKey::generate()); |
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$refreshToken->setExpireTime($this->server->getGrantType('refresh_token')->getRefreshTokenTTL() + time()); |
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$this->server->getTokenType()->setParam('refresh_token', $refreshToken->getId()); |
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$refreshToken->setAccessToken($accessToken); |
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$refreshToken->save(); |
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} |
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return $this->server->getTokenType()->generateResponse(); |
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} |
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/** |
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* 根据请求的 client_id 和 client_secret 获取 ClientEntity. |
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* |
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* @throws InvalidClientException |
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* @throws InvalidRequestException |
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* |
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* @return ClientEntity |
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*/ |
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protected function getClient() |
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{ |
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// Get the required params |
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$clientId = $this->server->getRequest()->request->get('client_id', $this->server->getRequest()->getUser()); |
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if (is_null($clientId)) { |
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throw new InvalidRequestException('client_id'); |
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} |
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$clientSecret = $this->server->getRequest()->request->get('client_secret', |
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$this->server->getRequest()->getPassword()); |
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if (is_null($clientSecret)) { |
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throw new InvalidRequestException('client_secret'); |
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} |
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// Validate client ID and client secret |
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$client = $this->server->getClientStorage()->get( |
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$clientId, |
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$clientSecret, |
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null, |
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$this->getIdentifier() |
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); |
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if (($client instanceof ClientEntity) === false) { |
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$this->server->getEventEmitter()->emit(new ClientAuthenticationFailedEvent($this->server->getRequest())); |
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throw new InvalidClientException(); |
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} |
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return $client; |
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} |
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/** |
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* 获取 UserId. |
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* |
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* @param $request |
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* @param $verifier |
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* |
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* @return int |
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*/ |
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abstract public function getUserId(Request $request, $verifier); |
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} |
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Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the interface: