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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
<?php
/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */
namespace Icinga\Authentication\UserGroup;
use Icinga\Application\Logger;
use Icinga\Application\Icinga;
use Icinga\Data\ConfigObject;
use Icinga\Data\ResourceFactory;
use Icinga\Exception\ConfigurationError;
/**
* Factory for user group backends
*/
class UserGroupBackend
{
/**
* The default user group backend types provided by Icinga Web 2
*
* @var array
*/
protected static $defaultBackends = array(
'db',
'ldap',
'msldap'
);
/**
* The registered custom user group backends with their identifier as key and class name as value
*
* @var array
*/
protected static $customBackends;
/**
* Register all custom user group backends from all loaded modules
*/
public static function registerCustomUserGroupBackends()
{
if (static::$customBackends !== null) {
return;
}
static::$customBackends = array();
$providedBy = array();
foreach (Icinga::app()->getModuleManager()->getLoadedModules() as $module) {
foreach ($module->getUserGroupBackends() as $identifier => $className) {
if (array_key_exists($identifier, $providedBy)) {
Logger::warning(
'Cannot register user group backend of type "%s" provided by module "%s".'
. ' The type is already provided by module "%s"',
$identifier,
$module->getName(),
$providedBy[$identifier]
);
} elseif (in_array($identifier, static::$defaultBackends)) {
Logger::warning(
'Cannot register user group backend of type "%s" provided by module "%s".'
. ' The type is a default type provided by Icinga Web 2',
$identifier,
$module->getName()
);
} else {
$providedBy[$identifier] = $module->getName();
static::$customBackends[$identifier] = $className;
}
}
}
}
/**
* Get config forms of all custom user group backends
*/
public static function getCustomBackendConfigForms()
{
$customBackendConfigForms = [];
static::registerCustomUserGroupBackends();
foreach (self::$customBackends as $customBackendType => $customBackendClass) {
if (method_exists($customBackendClass, 'getConfigurationFormClass')) {
$customBackendConfigForms[$customBackendType] = $customBackendClass::getConfigurationFormClass();
}
}
return $customBackendConfigForms;
}
/**
* Return the class for the given custom user group backend
*
* @param string $identifier The identifier of the custom user group backend
*
* @return string|null The name of the class or null in case there was no
* backend found with the given identifier
*
* @throws ConfigurationError In case the class associated to the given identifier does not exist
*/
protected static function getCustomUserGroupBackend($identifier)
{
static::registerCustomUserGroupBackends();
if (array_key_exists($identifier, static::$customBackends)) {
$className = static::$customBackends[$identifier];
if (! class_exists($className)) {
throw new ConfigurationError(
'Cannot utilize user group backend of type "%s". Class "%s" does not exist',
$identifier,
$className
);
}
return $className;
}
}
/**
* Create and return a user group backend with the given name and given configuration applied to it
*
* @param string $name
* @param ConfigObject $backendConfig
*
* @return UserGroupBackendInterface
*
* @throws ConfigurationError
*/
public static function create($name, ConfigObject $backendConfig)
{
if ($backendConfig->name !== null) {
$name = $backendConfig->name;
}
if (! ($backendType = strtolower($backendConfig->backend))) {
throw new ConfigurationError(
'Configuration for user group backend "%s" is missing the \'backend\' directive',
$name
);
}
if (in_array($backendType, static::$defaultBackends)) {
// The default backend check is the first one because of performance reasons:
// Do not attempt to load a custom user group backend unless it's actually required
} elseif (($customClass = static::getCustomUserGroupBackend($backendType)) !== null) {
$backend = new $customClass($backendConfig);
if (! is_a($backend, 'Icinga\Authentication\UserGroup\UserGroupBackendInterface')) {
throw new ConfigurationError(
'Cannot utilize user group backend of type "%s".'
. ' Class "%s" does not implement UserGroupBackendInterface',
$backendType,
$customClass
);
}
$backend->setName($name);
return $backend;
} else {
throw new ConfigurationError(
'Configuration for user group backend "%s" defines an invalid backend type.'
. ' Backend type "%s" is not supported',
$name,
$backendType
);
}
if ($backendConfig->resource === null) {
throw new ConfigurationError(
'Configuration for user group backend "%s" is missing the \'resource\' directive',
$name
);
}
$resourceConfig = ResourceFactory::getResourceConfig($backendConfig->resource);
if ($backendType === 'db' && $resourceConfig->db === 'mysql') {
$resourceConfig->charset = 'utf8mb4';
}
$backend = null;
$resource = ResourceFactory::createResource($resourceConfig);
switch ($backendType) {
case 'db':
$backend = new DbUserGroupBackend($resource);
break;
case 'ldap':
case 'msldap':
$backend = new LdapUserGroupBackend($resource);
$backend->setConfig($backendConfig);
break;
}
$backend->setName($name);
return $backend;
}
}
|
