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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
<?php
/**
*
* PHP 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package Cake.Model
* @since CakePHP(tm) v 0.2.9
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
App::uses('AppModel', 'Model');
/**
* Permissions linking AROs with ACOs
*
* @package Cake.Model
*/
class Permission extends AppModel {
/**
* Model name
*
* @var string
*/
public $name = 'Permission';
/**
* Explicitly disable in-memory query caching
*
* @var boolean
*/
public $cacheQueries = false;
/**
* Override default table name
*
* @var string
*/
public $useTable = 'aros_acos';
/**
* Permissions link AROs with ACOs
*
* @var array
*/
public $belongsTo = array('Aro', 'Aco');
/**
* No behaviors for this model
*
* @var array
*/
public $actsAs = null;
/**
* Constructor, used to tell this model to use the
* database configured for ACL
*/
public function __construct() {
$config = Configure::read('Acl.database');
if (!empty($config)) {
$this->useDbConfig = $config;
}
parent::__construct();
}
/**
* Checks if the given $aro has access to action $action in $aco
*
* @param string $aro ARO The requesting object identifier.
* @param string $aco ACO The controlled object identifier.
* @param string $action Action (defaults to *)
* @return boolean Success (true if ARO has access to action in ACO, false otherwise)
*/
public function check($aro, $aco, $action = "*") {
if ($aro == null || $aco == null) {
return false;
}
$permKeys = $this->getAcoKeys($this->schema());
$aroPath = $this->Aro->node($aro);
$acoPath = $this->Aco->node($aco);
if (empty($aroPath) || empty($acoPath)) {
trigger_error(__d('cake_dev', "DbAcl::check() - Failed ARO/ACO node lookup in permissions check. Node references:\nAro: ") . print_r($aro, true) . "\nAco: " . print_r($aco, true), E_USER_WARNING);
return false;
}
if ($acoPath == null || $acoPath == array()) {
trigger_error(__d('cake_dev', "DbAcl::check() - Failed ACO node lookup in permissions check. Node references:\nAro: ") . print_r($aro, true) . "\nAco: " . print_r($aco, true), E_USER_WARNING);
return false;
}
if ($action != '*' && !in_array('_' . $action, $permKeys)) {
trigger_error(__d('cake_dev', "ACO permissions key %s does not exist in DbAcl::check()", $action), E_USER_NOTICE);
return false;
}
$inherited = array();
$acoIDs = Hash::extract($acoPath, '{n}.' . $this->Aco->alias . '.id');
$count = count($aroPath);
for ($i = 0; $i < $count; $i++) {
$permAlias = $this->alias;
$perms = $this->find('all', array(
'conditions' => array(
"{$permAlias}.aro_id" => $aroPath[$i][$this->Aro->alias]['id'],
"{$permAlias}.aco_id" => $acoIDs
),
'order' => array($this->Aco->alias . '.lft' => 'desc'),
'recursive' => 0
));
if (empty($perms)) {
continue;
} else {
$perms = Hash::extract($perms, '{n}.' . $this->alias);
foreach ($perms as $perm) {
if ($action == '*') {
foreach ($permKeys as $key) {
if (!empty($perm)) {
if ($perm[$key] == -1) {
return false;
} elseif ($perm[$key] == 1) {
$inherited[$key] = 1;
}
}
}
if (count($inherited) === count($permKeys)) {
return true;
}
} else {
switch ($perm['_' . $action]) {
case -1:
return false;
case 0:
continue;
break;
case 1:
return true;
break;
}
}
}
}
}
return false;
}
/**
* Allow $aro to have access to action $actions in $aco
*
* @param string $aro ARO The requesting object identifier.
* @param string $aco ACO The controlled object identifier.
* @param string $actions Action (defaults to *)
* @param integer $value Value to indicate access type (1 to give access, -1 to deny, 0 to inherit)
* @return boolean Success
*/
public function allow($aro, $aco, $actions = "*", $value = 1) {
$perms = $this->getAclLink($aro, $aco);
$permKeys = $this->getAcoKeys($this->schema());
$save = array();
if ($perms == false) {
trigger_error(__d('cake_dev', 'DbAcl::allow() - Invalid node'), E_USER_WARNING);
return false;
}
if (isset($perms[0])) {
$save = $perms[0][$this->alias];
}
if ($actions == "*") {
$save = array_combine($permKeys, array_pad(array(), count($permKeys), $value));
} else {
if (!is_array($actions)) {
$actions = array('_' . $actions);
}
if (is_array($actions)) {
foreach ($actions as $action) {
if ($action{0} != '_') {
$action = '_' . $action;
}
if (in_array($action, $permKeys)) {
$save[$action] = $value;
}
}
}
}
list($save['aro_id'], $save['aco_id']) = array($perms['aro'], $perms['aco']);
if ($perms['link'] != null && !empty($perms['link'])) {
$save['id'] = $perms['link'][0][$this->alias]['id'];
} else {
unset($save['id']);
$this->id = null;
}
return ($this->save($save) !== false);
}
/**
* Get an array of access-control links between the given Aro and Aco
*
* @param string $aro ARO The requesting object identifier.
* @param string $aco ACO The controlled object identifier.
* @return array Indexed array with: 'aro', 'aco' and 'link'
*/
public function getAclLink($aro, $aco) {
$obj = array();
$obj['Aro'] = $this->Aro->node($aro);
$obj['Aco'] = $this->Aco->node($aco);
if (empty($obj['Aro']) || empty($obj['Aco'])) {
return false;
}
$aro = Hash::extract($obj, 'Aro.0.' . $this->Aro->alias . '.id');
$aco = Hash::extract($obj, 'Aco.0.' . $this->Aco->alias . '.id');
$aro = current($aro);
$aco = current($aco);
return array(
'aro' => $aro,
'aco' => $aco,
'link' => $this->find('all', array('conditions' => array(
$this->alias . '.aro_id' => $aro,
$this->alias . '.aco_id' => $aco
)))
);
}
/**
* Get the crud type keys
*
* @param array $keys Permission schema
* @return array permission keys
*/
public function getAcoKeys($keys) {
$newKeys = array();
$keys = array_keys($keys);
foreach ($keys as $key) {
if (!in_array($key, array('id', 'aro_id', 'aco_id'))) {
$newKeys[] = $key;
}
}
return $newKeys;
}
}
|
