1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Joas Schilling <coding@schilljs.com>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Core\Middleware;
use Exception;
use OC\Authentication\Exceptions\TwoFactorAuthRequiredException;
use OC\Authentication\Exceptions\UserAlreadyLoggedInException;
use OC\Authentication\TwoFactorAuth\Manager;
use OC\Core\Controller\LoginController;
use OC\Core\Controller\TwoFactorChallengeController;
use OC\User\Session;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http\RedirectResponse;
use OCP\AppFramework\Middleware;
use OCP\AppFramework\Utility\IControllerMethodReflector;
use OCP\Authentication\TwoFactorAuth\ALoginSetupController;
use OCP\IRequest;
use OCP\ISession;
use OCP\IURLGenerator;
use OCP\IUser;
class TwoFactorMiddleware extends Middleware {
/** @var Manager */
private $twoFactorManager;
/** @var Session */
private $userSession;
/** @var ISession */
private $session;
/** @var IURLGenerator */
private $urlGenerator;
/** @var IControllerMethodReflector */
private $reflector;
/** @var IRequest */
private $request;
/**
* @param Manager $twoFactorManager
* @param Session $userSession
* @param ISession $session
* @param IURLGenerator $urlGenerator
*/
public function __construct(Manager $twoFactorManager, Session $userSession, ISession $session,
IURLGenerator $urlGenerator, IControllerMethodReflector $reflector, IRequest $request) {
$this->twoFactorManager = $twoFactorManager;
$this->userSession = $userSession;
$this->session = $session;
$this->urlGenerator = $urlGenerator;
$this->reflector = $reflector;
$this->request = $request;
}
/**
* @param Controller $controller
* @param string $methodName
*/
public function beforeController($controller, $methodName) {
if ($this->reflector->hasAnnotation('PublicPage')) {
// Don't block public pages
return;
}
if ($controller instanceof TwoFactorChallengeController
&& $this->userSession->getUser() !== null
&& !$this->reflector->hasAnnotation('TwoFactorSetUpDoneRequired')) {
$providers = $this->twoFactorManager->getProviderSet($this->userSession->getUser());
if (!($providers->getProviders() === [] && !$providers->isProviderMissing())) {
throw new TwoFactorAuthRequiredException();
}
}
if ($controller instanceof ALoginSetupController
&& $this->userSession->getUser() !== null
&& $this->twoFactorManager->needsSecondFactor($this->userSession->getUser())) {
$providers = $this->twoFactorManager->getProviderSet($this->userSession->getUser());
if ($providers->getProviders() === [] && !$providers->isProviderMissing()) {
return;
}
}
if ($controller instanceof LoginController && $methodName === 'logout') {
// Don't block the logout page, to allow canceling the 2FA
return;
}
if ($this->userSession->isLoggedIn()) {
$user = $this->userSession->getUser();
if ($this->session->exists('app_password') || $this->twoFactorManager->isTwoFactorAuthenticated($user)) {
$this->checkTwoFactor($controller, $methodName, $user);
} elseif ($controller instanceof TwoFactorChallengeController) {
// Allow access to the two-factor controllers only if two-factor authentication
// is in progress.
throw new UserAlreadyLoggedInException();
}
}
// TODO: dont check/enforce 2FA if a auth token is used
}
private function checkTwoFactor(Controller $controller, $methodName, IUser $user) {
// If two-factor auth is in progress disallow access to any controllers
// defined within "LoginController".
$needsSecondFactor = $this->twoFactorManager->needsSecondFactor($user);
$twoFactor = $controller instanceof TwoFactorChallengeController;
// Disallow access to any controller if 2FA needs to be checked
if ($needsSecondFactor && !$twoFactor) {
throw new TwoFactorAuthRequiredException();
}
// Allow access to the two-factor controllers only if two-factor authentication
// is in progress.
if (!$needsSecondFactor && $twoFactor) {
throw new UserAlreadyLoggedInException();
}
}
public function afterException($controller, $methodName, Exception $exception) {
if ($exception instanceof TwoFactorAuthRequiredException) {
$params = [];
if (isset($this->request->server['REQUEST_URI'])) {
$params['redirect_url'] = $this->request->server['REQUEST_URI'];
}
return new RedirectResponse($this->urlGenerator->linkToRoute('core.TwoFactorChallenge.selectChallenge', $params));
}
if ($exception instanceof UserAlreadyLoggedInException) {
return new RedirectResponse($this->urlGenerator->linkToRoute('files.view.index'));
}
throw $exception;
}
}
|
