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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2017 Lukas Reschke <lukas@statuscode.ch>
*
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\OAuth2\Controller;
use OC\Authentication\Exceptions\ExpiredTokenException;
use OC\Authentication\Exceptions\InvalidTokenException;
use OC\Authentication\Token\IProvider as TokenProvider;
use OC\Security\Bruteforce\Throttler;
use OCA\OAuth2\Db\AccessTokenMapper;
use OCA\OAuth2\Db\ClientMapper;
use OCA\OAuth2\Exceptions\AccessTokenNotFoundException;
use OCA\OAuth2\Exceptions\ClientNotFoundException;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\JSONResponse;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\IRequest;
use OCP\Security\ICrypto;
use OCP\Security\ISecureRandom;
class OauthApiController extends Controller {
/** @var AccessTokenMapper */
private $accessTokenMapper;
/** @var ClientMapper */
private $clientMapper;
/** @var ICrypto */
private $crypto;
/** @var TokenProvider */
private $tokenProvider;
/** @var ISecureRandom */
private $secureRandom;
/** @var ITimeFactory */
private $time;
/** @var Throttler */
private $throttler;
public function __construct(string $appName,
IRequest $request,
ICrypto $crypto,
AccessTokenMapper $accessTokenMapper,
ClientMapper $clientMapper,
TokenProvider $tokenProvider,
ISecureRandom $secureRandom,
ITimeFactory $time,
Throttler $throttler) {
parent::__construct($appName, $request);
$this->crypto = $crypto;
$this->accessTokenMapper = $accessTokenMapper;
$this->clientMapper = $clientMapper;
$this->tokenProvider = $tokenProvider;
$this->secureRandom = $secureRandom;
$this->time = $time;
$this->throttler = $throttler;
}
/**
* @PublicPage
* @NoCSRFRequired
*
* @param string $grant_type
* @param string $code
* @param string $refresh_token
* @param string $client_id
* @param string $client_secret
* @return JSONResponse
*/
public function getToken($grant_type, $code, $refresh_token, $client_id, $client_secret): JSONResponse {
// We only handle two types
if ($grant_type !== 'authorization_code' && $grant_type !== 'refresh_token') {
return new JSONResponse([
'error' => 'invalid_grant',
], Http::STATUS_BAD_REQUEST);
}
// We handle the initial and refresh tokens the same way
if ($grant_type === 'refresh_token') {
$code = $refresh_token;
}
try {
$accessToken = $this->accessTokenMapper->getByCode($code);
} catch (AccessTokenNotFoundException $e) {
return new JSONResponse([
'error' => 'invalid_request',
], Http::STATUS_BAD_REQUEST);
}
try {
$client = $this->clientMapper->getByUid($accessToken->getClientId());
} catch (ClientNotFoundException $e) {
return new JSONResponse([
'error' => 'invalid_request',
], Http::STATUS_BAD_REQUEST);
}
if (isset($this->request->server['PHP_AUTH_USER'])) {
$client_id = $this->request->server['PHP_AUTH_USER'];
$client_secret = $this->request->server['PHP_AUTH_PW'];
}
// The client id and secret must match. Else we don't provide an access token!
if ($client->getClientIdentifier() !== $client_id || $client->getSecret() !== $client_secret) {
return new JSONResponse([
'error' => 'invalid_client',
], Http::STATUS_BAD_REQUEST);
}
$decryptedToken = $this->crypto->decrypt($accessToken->getEncryptedToken(), $code);
// Obtain the appToken assoicated
try {
$appToken = $this->tokenProvider->getTokenById($accessToken->getTokenId());
} catch (ExpiredTokenException $e) {
$appToken = $e->getToken();
} catch (InvalidTokenException $e) {
//We can't do anything...
$this->accessTokenMapper->delete($accessToken);
return new JSONResponse([
'error' => 'invalid_request',
], Http::STATUS_BAD_REQUEST);
}
// Rotate the apptoken (so the old one becomes invalid basically)
$newToken = $this->secureRandom->generate(72, ISecureRandom::CHAR_UPPER.ISecureRandom::CHAR_LOWER.ISecureRandom::CHAR_DIGITS);
$appToken = $this->tokenProvider->rotate(
$appToken,
$decryptedToken,
$newToken
);
// Expiration is in 1 hour again
$appToken->setExpires($this->time->getTime() + 3600);
$this->tokenProvider->updateToken($appToken);
// Generate a new refresh token and encrypt the new apptoken in the DB
$newCode = $this->secureRandom->generate(128, ISecureRandom::CHAR_UPPER.ISecureRandom::CHAR_LOWER.ISecureRandom::CHAR_DIGITS);
$accessToken->setHashedCode(hash('sha512', $newCode));
$accessToken->setEncryptedToken($this->crypto->encrypt($newToken, $newCode));
$this->accessTokenMapper->update($accessToken);
$this->throttler->resetDelay($this->request->getRemoteAddress(), 'login', ['user' => $appToken->getUID()]);
return new JSONResponse(
[
'access_token' => $newToken,
'token_type' => 'Bearer',
'expires_in' => 3600,
'refresh_token' => $newCode,
'user_id' => $appToken->getUID(),
]
);
}
}
|
