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
162
163
164
165
166
167
168
169
170
171
172
|
<?php
/**
* @author Arthur Schiwon <blizzz@owncloud.com>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Christian Seiler <christian@iwakd.de>
* @author Jakob Sack <mail@jakobsack.de>
* @author Lukas Reschke <lukas@owncloud.com>
* @author Markus Goetz <markus@woboq.com>
* @author Michael Gapczynski <GapczynskiM@gmail.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @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 OCA\DAV\Connector\Sabre;
use Exception;
use OCP\ISession;
use OCP\IUserSession;
use Sabre\DAV\Auth\Backend\AbstractBasic;
use Sabre\DAV\Exception\NotAuthenticated;
use Sabre\DAV\Exception\ServiceUnavailable;
use Sabre\HTTP\RequestInterface;
use Sabre\HTTP\ResponseInterface;
class Auth extends AbstractBasic {
const DAV_AUTHENTICATED = 'AUTHENTICATED_TO_DAV_BACKEND';
/** @var ISession */
private $session;
/** @var IUserSession */
private $userSession;
/**
* @param ISession $session
* @param IUserSession $userSession
*/
public function __construct(ISession $session,
IUserSession $userSession) {
$this->session = $session;
$this->userSession = $userSession;
$this->principalPrefix = 'principals/users/';
}
/**
* Whether the user has initially authenticated via DAV
*
* This is required for WebDAV clients that resent the cookies even when the
* account was changed.
*
* @see https://github.com/owncloud/core/issues/13245
*
* @param string $username
* @return bool
*/
public function isDavAuthenticated($username) {
return !is_null($this->session->get(self::DAV_AUTHENTICATED)) &&
$this->session->get(self::DAV_AUTHENTICATED) === $username;
}
/**
* Validates a username and password
*
* This method should return true or false depending on if login
* succeeded.
*
* @param string $username
* @param string $password
* @return bool
*/
protected function validateUserPass($username, $password) {
if ($this->userSession->isLoggedIn() &&
$this->isDavAuthenticated($this->userSession->getUser()->getUID())
) {
\OC_Util::setupFS($this->userSession->getUser()->getUID());
$this->session->close();
return true;
} else {
\OC_Util::setUpFS(); //login hooks may need early access to the filesystem
if($this->userSession->login($username, $password)) {
\OC_Util::setUpFS($this->userSession->getUser()->getUID());
$this->session->set(self::DAV_AUTHENTICATED, $this->userSession->getUser()->getUID());
$this->session->close();
return true;
} else {
$this->session->close();
return false;
}
}
}
/**
* Returns information about the currently logged in username.
*
* If nobody is currently logged in, this method should return null.
*
* @return string|null
*/
public function getCurrentUser() {
$user = $this->userSession->getUser() ? $this->userSession->getUser()->getUID() : null;
if($user !== null && $this->isDavAuthenticated($user)) {
return $user;
}
if($user !== null && is_null($this->session->get(self::DAV_AUTHENTICATED))) {
return $user;
}
return null;
}
/**
* @param RequestInterface $request
* @param ResponseInterface $response
* @return array
* @throws NotAuthenticated
* @throws ServiceUnavailable
*/
function check(RequestInterface $request, ResponseInterface $response) {
try {
$result = $this->auth($request, $response);
return $result;
} catch (NotAuthenticated $e) {
throw $e;
} catch (Exception $e) {
$class = get_class($e);
$msg = $e->getMessage();
throw new ServiceUnavailable("$class: $msg");
}
}
/**
* @param RequestInterface $request
* @param ResponseInterface $response
* @return array
*/
private function auth(RequestInterface $request, ResponseInterface $response) {
if (\OC_User::handleApacheAuth() ||
($this->userSession->isLoggedIn() && is_null($this->session->get(self::DAV_AUTHENTICATED)))
) {
$user = $this->userSession->getUser()->getUID();
\OC_Util::setupFS($user);
$this->currentUser = $user;
$this->session->close();
return [true, $this->principalPrefix . $user];
}
if (!$this->userSession->isLoggedIn() && in_array('XMLHttpRequest', explode(',', $request->getHeader('X-Requested-With')))) {
// do not re-authenticate over ajax, use dummy auth name to prevent browser popup
$response->addHeader('WWW-Authenticate','DummyBasic realm="' . $this->realm . '"');
$response->setStatus(401);
throw new \Sabre\DAV\Exception\NotAuthenticated('Cannot authenticate over ajax calls');
}
return parent::check($request, $response);
}
}
|
