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
|
<?php
declare(strict_types=1);
/**
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @copyright Copyright (c) 2016 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* Two-factor TOTP
*
* 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\TwoFactorTOTP\Service;
use Base32\Base32;
use OCA\TwoFactorTOTP\Db\TotpSecret;
use OCA\TwoFactorTOTP\Db\TotpSecretMapper;
use OCA\TwoFactorTOTP\Event\StateChanged;
use OCA\TwoFactorTOTP\Exception\NoTotpSecretFoundException;
use OCP\AppFramework\Db\DoesNotExistException;
use OCP\IUser;
use OCP\Security\ICrypto;
use Otp\GoogleAuthenticator;
use Otp\Otp;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
class Totp implements ITotp {
/** @var TotpSecretMapper */
private $secretMapper;
/** @var ICrypto */
private $crypto;
/** @var EventDispatcherInterface */
private $eventDispatcher;
public function __construct(TotpSecretMapper $secretMapper,
ICrypto $crypto,
EventDispatcherInterface $eventDispatcher) {
$this->secretMapper = $secretMapper;
$this->crypto = $crypto;
$this->eventDispatcher = $eventDispatcher;
}
public function hasSecret(IUser $user) {
try {
$secret = $this->secretMapper->getSecret($user);
return ITotp::STATE_ENABLED === (int)$secret->getState();
} catch (DoesNotExistException $ex) {
return false;
}
}
/**
* @param IUser $user
*/
public function createSecret(IUser $user): string {
try {
// Delete existing one
$oldSecret = $this->secretMapper->getSecret($user);
$this->secretMapper->delete($oldSecret);
} catch (DoesNotExistException $ex) {
// Ignore
}
// Create new one
$secret = GoogleAuthenticator::generateRandom();
$dbSecret = new TotpSecret();
$dbSecret->setUserId($user->getUID());
$dbSecret->setSecret($this->crypto->encrypt($secret));
$dbSecret->setState(ITotp::STATE_CREATED);
$this->secretMapper->insert($dbSecret);
return $secret;
}
public function enable(IUser $user, $key): bool {
if (!$this->validateSecret($user, $key)) {
return false;
}
$dbSecret = $this->secretMapper->getSecret($user);
$dbSecret->setState(ITotp::STATE_ENABLED);
$this->secretMapper->update($dbSecret);
$this->eventDispatcher->dispatch(StateChanged::class, new StateChanged($user, true));
return true;
}
public function deleteSecret(IUser $user) {
try {
// TODO: execute DELETE sql in mapper instead
$dbSecret = $this->secretMapper->getSecret($user);
$this->secretMapper->delete($dbSecret);
} catch (DoesNotExistException $ex) {
// Ignore
}
$this->eventDispatcher->dispatch(StateChanged::class, new StateChanged($user, false));
}
public function validateSecret(IUser $user, $key): bool {
try {
$dbSecret = $this->secretMapper->getSecret($user);
} catch (DoesNotExistException $ex) {
throw new NoTotpSecretFoundException();
}
$secret = $this->crypto->decrypt($dbSecret->getSecret());
$otp = new Otp();
return $otp->checkTotp(Base32::decode($secret), $key, 3);
}
}
|
