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<?php
namespace OAuth2\GrantType;
use OAuth2\Storage\AuthorizationCodeInterface;
use OAuth2\ResponseType\AccessTokenInterface;
use OAuth2\RequestInterface;
use OAuth2\ResponseInterface;
/**
*
* @author Brent Shaffer <bshafs at gmail dot com>
*/
class AuthorizationCode implements GrantTypeInterface
{
protected $storage;
protected $authCode;
/**
* @param \OAuth2\Storage\AuthorizationCodeInterface $storage REQUIRED Storage class for retrieving authorization code information
*/
public function __construct(AuthorizationCodeInterface $storage)
{
$this->storage = $storage;
}
public function getQuerystringIdentifier()
{
return 'authorization_code';
}
public function validateRequest(RequestInterface $request, ResponseInterface $response)
{
if (!$request->request('code')) {
$response->setError(400, 'invalid_request', 'Missing parameter: "code" is required');
return false;
}
$code = $request->request('code');
if (!$authCode = $this->storage->getAuthorizationCode($code)) {
$response->setError(400, 'invalid_grant', 'Authorization code doesn\'t exist or is invalid for the client');
return false;
}
/*
* 4.1.3 - ensure that the "redirect_uri" parameter is present if the "redirect_uri" parameter was included in the initial authorization request
* @uri - http://tools.ietf.org/html/rfc6749#section-4.1.3
*/
if (isset($authCode['redirect_uri']) && $authCode['redirect_uri']) {
if (!$request->request('redirect_uri') || urldecode($request->request('redirect_uri')) != urldecode($authCode['redirect_uri'])) {
$response->setError(400, 'redirect_uri_mismatch', "The redirect URI is missing or do not match", "#section-4.1.3");
return false;
}
}
if (!isset($authCode['expires'])) {
throw new \Exception('Storage must return authcode with a value for "expires"');
}
if ($authCode["expires"] < time()) {
$response->setError(400, 'invalid_grant', "The authorization code has expired");
return false;
}
if (!isset($authCode['code'])) {
$authCode['code'] = $code; // used to expire the code after the access token is granted
}
$this->authCode = $authCode;
return true;
}
public function getClientId()
{
return $this->authCode['client_id'];
}
public function getScope()
{
return isset($this->authCode['scope']) ? $this->authCode['scope'] : null;
}
public function getUserId()
{
return isset($this->authCode['user_id']) ? $this->authCode['user_id'] : null;
}
public function createAccessToken(AccessTokenInterface $accessToken, $client_id, $user_id, $scope)
{
$token = $accessToken->createAccessToken($client_id, $user_id, $scope);
$this->storage->expireAuthorizationCode($this->authCode['code']);
return $token;
}
}
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