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
|
<?php
/**
* Authentication source for Apache 'htpasswd' files.
*
* @author Dyonisius (Dick) Visser, TERENA.
* @package SimpleSAMLphp
*/
use WhiteHat101\Crypt\APR1_MD5;
class sspmod_authcrypt_Auth_Source_Htpasswd extends sspmod_core_Auth_UserPassBase {
/**
* Our users, stored in an array, where each value is "<username>:<passwordhash>".
*/
private $users;
/**
* Constructor for this authentication source.
*
* @param array $info Information about this authentication source.
* @param array $config Configuration.
*/
public function __construct($info, $config) {
assert('is_array($info)');
assert('is_array($config)');
// Call the parent constructor first, as required by the interface
parent::__construct($info, $config);
$this->users = array();
if(!$htpasswd = file_get_contents($config['htpasswd_file'])) {
throw new Exception('Could not read ' . $config['htpasswd_file']);
}
$this->users = explode("\n", trim($htpasswd));
try {
$this->attributes = SimpleSAML\Utils\Attributes::normalizeAttributesArray($config['static_attributes']);
} catch(Exception $e) {
throw new Exception('Invalid static_attributes in authentication source ' .
$this->authId . ': ' . $e->getMessage());
}
}
/**
* Attempt to log in using the given username and password.
*
* On a successful login, this function should return the username as 'uid' attribute,
* and merged attributes from the configuration file.
* On failure, it should throw an exception. A SimpleSAML_Error_Error('WRONGUSERPASS')
* should be thrown in case of a wrong username OR a wrong password, to prevent the
* enumeration of usernames.
*
* @param string $username The username the user wrote.
* @param string $password The password the user wrote.
* @return array Associative array with the users attributes.
*/
protected function login($username, $password) {
assert('is_string($username)');
assert('is_string($password)');
foreach($this->users as $userpass) {
$matches = explode(':', $userpass, 2);
if($matches[0] == $username) {
$crypted = $matches[1];
// This is about the only attribute we can add
$attributes = array_merge(array('uid' => array($username)), $this->attributes);
// Traditional crypt(3)
if(crypt($password, $crypted) == $crypted) {
SimpleSAML_Logger::debug('User '. $username . ' authenticated successfully');
return $attributes;
}
// Apache's custom MD5
if(APR1_MD5::check($password, $crypted)) {
SimpleSAML_Logger::debug('User '. $username . ' authenticated successfully');
return $attributes;
}
// SHA1 or plain-text
if(SimpleSAML\Utils\Crypto::pwValid($crypted, $password)) {
SimpleSAML_Logger::debug('User '. $username . ' authenticated successfully');
return $attributes;
}
throw new SimpleSAML_Error_Error('WRONGUSERPASS');
}
}
throw new SimpleSAML_Error_Error('WRONGUSERPASS');
}
}
|
