|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* Nucleus - XMPP Library for PHP |
|
4
|
|
|
* |
|
5
|
|
|
* Copyright (C) 2016, Some rights reserved. |
|
6
|
|
|
* |
|
7
|
|
|
* @author Kacper "Kadet" Donat <[email protected]> |
|
8
|
|
|
* |
|
9
|
|
|
* Contact with author: |
|
10
|
|
|
* Xmpp: [email protected] |
|
11
|
|
|
* E-mail: [email protected] |
|
12
|
|
|
* |
|
13
|
|
|
* From Kadet with love. |
|
14
|
|
|
*/ |
|
15
|
|
|
|
|
16
|
|
|
namespace Kadet\Xmpp\Component; |
|
17
|
|
|
|
|
18
|
|
|
use Fabiang\Sasl\Authentication\AuthenticationInterface; |
|
19
|
|
|
use Fabiang\Sasl\Authentication\ChallengeAuthenticationInterface; |
|
20
|
|
|
use Fabiang\Sasl\Exception\InvalidArgumentException; |
|
21
|
|
|
use Fabiang\Sasl\Sasl; |
|
22
|
|
|
use Kadet\Xmpp\Exception\Protocol\AuthenticationException; |
|
23
|
|
|
use Kadet\Xmpp\Stream\Features; |
|
24
|
|
|
use Kadet\Xmpp\Xml\XmlElement; |
|
25
|
|
|
use Kadet\Xmpp\XmppClient; |
|
26
|
|
|
|
|
27
|
|
|
use Kadet\Xmpp\Utils\filter as with; |
|
28
|
|
|
use function Kadet\Xmpp\Utils\filter\{ |
|
29
|
|
|
all, in |
|
30
|
|
|
}; |
|
31
|
|
|
|
|
32
|
|
|
class SaslAuthenticator extends Component implements Authenticator |
|
33
|
|
|
{ |
|
34
|
|
|
const XMLNS = 'urn:ietf:params:xml:ns:xmpp-sasl'; |
|
35
|
|
|
|
|
36
|
|
|
/** |
|
37
|
|
|
* Client's password used in authorisation. |
|
38
|
|
|
* |
|
39
|
|
|
* @var string |
|
40
|
|
|
*/ |
|
41
|
|
|
private $_password; |
|
42
|
|
|
|
|
43
|
|
|
/** |
|
44
|
|
|
* Factory used to create mechanisms |
|
45
|
|
|
* |
|
46
|
|
|
* @var Sasl |
|
47
|
|
|
*/ |
|
48
|
|
|
private $_sasl; |
|
49
|
|
|
|
|
50
|
|
|
/** |
|
51
|
|
|
* Authentication constructor. |
|
52
|
|
|
* |
|
53
|
|
|
* @param string $password Client's password |
|
54
|
|
|
* @param Sasl $sasl Factory used to create mechanisms |
|
55
|
|
|
*/ |
|
56
|
4 |
|
public function __construct($password = null, Sasl $sasl = null) |
|
57
|
|
|
{ |
|
58
|
4 |
|
$this->setPassword($password); |
|
59
|
4 |
|
$this->_sasl = $sasl ?: new Sasl(); |
|
60
|
4 |
|
} |
|
61
|
|
|
|
|
62
|
4 |
|
public function setClient(XmppClient $client) |
|
63
|
|
|
{ |
|
64
|
4 |
|
parent::setClient($client); |
|
65
|
|
|
|
|
66
|
|
|
$client->on('features', function (Features $features) { |
|
67
|
|
|
return !$this->auth($features); |
|
68
|
4 |
|
}); |
|
69
|
4 |
|
} |
|
70
|
|
|
|
|
71
|
4 |
|
public function auth(Features $features) |
|
72
|
|
|
{ |
|
73
|
4 |
|
if (!empty($features->mechanisms)) { |
|
74
|
4 |
|
foreach ($features->mechanisms as $name) { |
|
75
|
4 |
|
if($this->tryMechanism($name)) { |
|
76
|
4 |
|
return true; |
|
77
|
|
|
} |
|
78
|
|
|
} |
|
79
|
|
|
} |
|
80
|
|
|
|
|
81
|
|
|
return false; |
|
82
|
|
|
} |
|
83
|
|
|
|
|
84
|
4 |
|
private function tryMechanism($name) { |
|
85
|
|
|
try { |
|
86
|
4 |
|
$mechanism = $this->_sasl->factory($name, [ |
|
87
|
4 |
|
'authcid' => $this->_client->jid->local, |
|
88
|
4 |
|
'secret' => $this->_password, |
|
89
|
4 |
|
'hostname' => $this->_client->jid->domain, |
|
90
|
4 |
|
'service' => 'xmpp' |
|
91
|
|
|
]); |
|
92
|
|
|
|
|
93
|
4 |
|
$this->_client->getLogger()->debug('Starting auth using {name} mechanism.', ['name' => $name]); |
|
94
|
|
|
|
|
95
|
4 |
|
$auth = new XmlElement('auth', self::XMLNS); |
|
96
|
4 |
|
$auth->setAttribute('mechanism', $name); |
|
97
|
|
|
|
|
98
|
4 |
|
$auth->append(base64_encode( |
|
99
|
|
|
$mechanism instanceof ChallengeAuthenticationInterface |
|
100
|
2 |
|
? $this->mechanismWithChallenge($mechanism) |
|
101
|
4 |
|
: $this->mechanismWithoutChallenge($mechanism) |
|
102
|
|
|
)); |
|
103
|
|
|
|
|
104
|
4 |
|
$this->_client->write($auth); |
|
105
|
|
|
|
|
106
|
4 |
|
return true; |
|
107
|
|
|
} catch (InvalidArgumentException $e) { |
|
108
|
|
|
return false; |
|
109
|
|
|
} |
|
110
|
|
|
} |
|
111
|
|
|
|
|
112
|
2 |
|
private function mechanismWithChallenge(ChallengeAuthenticationInterface $mechanism) { |
|
113
|
|
|
try { |
|
114
|
2 |
|
$response = base64_encode($mechanism->createResponse()); |
|
115
|
2 |
|
} catch (InvalidArgumentException $e) { |
|
116
|
2 |
|
$response = '='; |
|
117
|
|
|
} |
|
118
|
|
|
|
|
119
|
|
|
$callback = $this->_client->on('element', function (XmlElement $challenge) use ($mechanism) { |
|
120
|
2 |
|
$this->handleChallenge($challenge, $mechanism); |
|
121
|
2 |
|
}, with\element('challenge', self::XMLNS)); |
|
122
|
|
|
|
|
123
|
|
|
$this->_client->once('element', function (XmlElement $result) use ($callback) { |
|
124
|
2 |
|
$this->_client->removeListener('element', $callback); |
|
125
|
2 |
|
$this->handleAuthResult($result); |
|
126
|
2 |
|
}, $this->_resultPredicate()); |
|
127
|
|
|
|
|
128
|
2 |
|
return $response; |
|
129
|
|
|
} |
|
130
|
|
|
|
|
131
|
|
|
private function mechanismWithoutChallenge(AuthenticationInterface $mechanism) |
|
132
|
|
|
{ |
|
133
|
2 |
|
$this->_client->once('element', function (XmlElement $result) { |
|
134
|
2 |
|
$this->handleAuthResult($result); |
|
135
|
2 |
|
}, $this->_resultPredicate()); |
|
136
|
|
|
|
|
137
|
2 |
|
return $mechanism->createResponse(); |
|
138
|
|
|
} |
|
139
|
|
|
|
|
140
|
2 |
|
private function handleChallenge(XmlElement $challenge, AuthenticationInterface $mechanism) |
|
141
|
|
|
{ |
|
142
|
2 |
|
$response = new XmlElement('response', self::XMLNS); |
|
143
|
2 |
|
$response->append(base64_encode($mechanism->createResponse(base64_decode($challenge->innerXml)))); |
|
144
|
|
|
|
|
145
|
2 |
|
$this->_client->write($response); |
|
146
|
2 |
|
} |
|
147
|
|
|
|
|
148
|
4 |
|
private function handleAuthResult(XmlElement $result) |
|
149
|
|
|
{ |
|
150
|
|
|
// todo: handle different scenarios |
|
151
|
4 |
|
if ($result->localName === 'failure') { |
|
152
|
2 |
|
throw new AuthenticationException('Unable to auth. '.trim($result->innerXml)); |
|
153
|
|
|
} |
|
154
|
|
|
|
|
155
|
2 |
|
$this->_client->getLogger()->info('Successfully authorized as {name}.', ['name' => (string)$this->_client->jid]); |
|
156
|
2 |
|
$this->_client->restart(); |
|
157
|
2 |
|
} |
|
158
|
|
|
|
|
159
|
4 |
|
public function setPassword(string $password = null) |
|
160
|
|
|
{ |
|
161
|
4 |
|
$this->_password = $password; |
|
162
|
4 |
|
} |
|
163
|
|
|
|
|
164
|
4 |
|
private function _resultPredicate() |
|
165
|
|
|
{ |
|
166
|
4 |
|
return all(with\element\name(in('success', 'failure')), with\element\xmlns(self::XMLNS)); |
|
167
|
|
|
} |
|
168
|
|
|
} |
|
169
|
|
|
|
kadet1090 /
nucleus
