140 lines
4.3 KiB
PHP
140 lines
4.3 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Christoph Wurst <christoph@owncloud.com>
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* @author Joas Schilling <coding@schilljs.com>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Core\Middleware;
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use Exception;
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use OC\Authentication\Exceptions\TwoFactorAuthRequiredException;
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use OC\Authentication\Exceptions\UserAlreadyLoggedInException;
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use OC\Authentication\TwoFactorAuth\Manager;
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use OC\Core\Controller\LoginController;
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use OC\Core\Controller\TwoFactorChallengeController;
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use OC\User\Session;
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use OCP\AppFramework\Controller;
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use OCP\AppFramework\Http\RedirectResponse;
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use OCP\AppFramework\Middleware;
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use OCP\AppFramework\Utility\IControllerMethodReflector;
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use OCP\IRequest;
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use OCP\ISession;
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use OCP\IURLGenerator;
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use OCP\IUser;
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class TwoFactorMiddleware extends Middleware {
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/** @var Manager */
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private $twoFactorManager;
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/** @var Session */
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private $userSession;
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/** @var ISession */
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private $session;
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/** @var IURLGenerator */
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private $urlGenerator;
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/** @var IControllerMethodReflector */
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private $reflector;
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/** @var IRequest */
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private $request;
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/**
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* @param Manager $twoFactorManager
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* @param Session $userSession
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* @param ISession $session
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* @param IURLGenerator $urlGenerator
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*/
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public function __construct(Manager $twoFactorManager, Session $userSession, ISession $session,
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IURLGenerator $urlGenerator, IControllerMethodReflector $reflector, IRequest $request) {
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$this->twoFactorManager = $twoFactorManager;
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$this->userSession = $userSession;
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$this->session = $session;
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$this->urlGenerator = $urlGenerator;
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$this->reflector = $reflector;
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$this->request = $request;
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}
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/**
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* @param Controller $controller
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* @param string $methodName
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*/
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public function beforeController($controller, $methodName) {
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if ($this->reflector->hasAnnotation('PublicPage')) {
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// Don't block public pages
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return;
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}
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if ($controller instanceof LoginController && $methodName === 'logout') {
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// Don't block the logout page, to allow canceling the 2FA
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return;
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}
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if ($this->userSession->isLoggedIn()) {
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$user = $this->userSession->getUser();
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if ($this->twoFactorManager->isTwoFactorAuthenticated($user)) {
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$this->checkTwoFactor($controller, $methodName, $user);
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} else if ($controller instanceof TwoFactorChallengeController) {
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// Allow access to the two-factor controllers only if two-factor authentication
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// is in progress.
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throw new UserAlreadyLoggedInException();
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}
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}
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// TODO: dont check/enforce 2FA if a auth token is used
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}
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private function checkTwoFactor($controller, $methodName, IUser $user) {
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// If two-factor auth is in progress disallow access to any controllers
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// defined within "LoginController".
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$needsSecondFactor = $this->twoFactorManager->needsSecondFactor($user);
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$twoFactor = $controller instanceof TwoFactorChallengeController;
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// Disallow access to any controller if 2FA needs to be checked
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if ($needsSecondFactor && !$twoFactor) {
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throw new TwoFactorAuthRequiredException();
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}
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// Allow access to the two-factor controllers only if two-factor authentication
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// is in progress.
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if (!$needsSecondFactor && $twoFactor) {
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throw new UserAlreadyLoggedInException();
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}
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}
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public function afterException($controller, $methodName, Exception $exception) {
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if ($exception instanceof TwoFactorAuthRequiredException) {
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$params = [];
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if (isset($this->request->server['REQUEST_URI'])) {
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$params['redirect_url'] = $this->request->server['REQUEST_URI'];
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}
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return new RedirectResponse($this->urlGenerator->linkToRoute('core.TwoFactorChallenge.selectChallenge', $params));
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}
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if ($exception instanceof UserAlreadyLoggedInException) {
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return new RedirectResponse($this->urlGenerator->linkToRoute('files.view.index'));
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}
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throw $exception;
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}
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}
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