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1 | <?php |
2 | |
3 | /** |
4 | * VuFind Action Helper - Permission Checker |
5 | * |
6 | * PHP version 8 |
7 | * |
8 | * Copyright (C) Villanova University 2017. |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License version 2, |
12 | * as published by the Free Software Foundation. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | * GNU General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
22 | * |
23 | * @category VuFind |
24 | * @package Controller_Plugins |
25 | * @author Demian Katz <demian.katz@villanova.edu> |
26 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
27 | * @link https://vufind.org Main Page |
28 | */ |
29 | |
30 | namespace VuFind\Controller\Plugin; |
31 | |
32 | use Laminas\Log\LoggerAwareInterface; |
33 | use Laminas\Mvc\Controller\Plugin\AbstractPlugin; |
34 | use VuFind\Exception\Forbidden as ForbiddenException; |
35 | use VuFind\I18n\Translator\TranslatorAwareInterface; |
36 | use VuFind\Role\PermissionDeniedManager; |
37 | use VuFind\Role\PermissionManager; |
38 | |
39 | /** |
40 | * VuFind Action Helper - Permission Checker |
41 | * |
42 | * @category VuFind |
43 | * @package Controller_Plugins |
44 | * @author Demian Katz <demian.katz@villanova.edu> |
45 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
46 | * @link https://vufind.org Main Page |
47 | */ |
48 | class Permission extends AbstractPlugin implements |
49 | LoggerAwareInterface, |
50 | TranslatorAwareInterface |
51 | { |
52 | use \VuFind\I18n\Translator\TranslatorAwareTrait; |
53 | use \VuFind\Log\LoggerAwareTrait; |
54 | |
55 | /** |
56 | * Permission manager |
57 | * |
58 | * @var PermissionManager |
59 | */ |
60 | protected $permissionManager; |
61 | |
62 | /** |
63 | * Permission denied manager |
64 | * |
65 | * @var PermissionDeniedManager |
66 | */ |
67 | protected $permissionDeniedManager; |
68 | |
69 | /** |
70 | * Auth manager |
71 | * |
72 | * @var \VuFind\Auth\Manager |
73 | */ |
74 | protected $authManager; |
75 | |
76 | /** |
77 | * Constructor |
78 | * |
79 | * @param PermissionManager $pm Permission Manager |
80 | * @param PermissionDeniedManager $pdm Permission Denied Manager |
81 | * @param \VuFind\Auth\Manager $auth Auth manager |
82 | */ |
83 | public function __construct( |
84 | PermissionManager $pm, |
85 | PermissionDeniedManager $pdm, |
86 | \VuFind\Auth\Manager $auth |
87 | ) { |
88 | $this->permissionManager = $pm; |
89 | $this->permissionDeniedManager = $pdm; |
90 | $this->authManager = $auth; |
91 | } |
92 | |
93 | /** |
94 | * Check if a permission is authorized, returning a boolean value without |
95 | * applying any additional behavior. |
96 | * |
97 | * @param string $permission Permission to check |
98 | * @param mixed $context Context for the permission behavior (optional) |
99 | * |
100 | * @return bool |
101 | */ |
102 | public function isAuthorized($permission, $context = null) |
103 | { |
104 | return $this->permissionManager->isAuthorized($permission, $context); |
105 | } |
106 | |
107 | /** |
108 | * Check if a permission is denied; if so, throw an exception or return an |
109 | * error response as configured in permissionBehavior.ini. |
110 | * |
111 | * @param string $permission Permission to check |
112 | * @param string $defaultBehavior Default behavior to use if none configured |
113 | * (null to use default configured in the manager, false to take no action). |
114 | * @param bool $passIfUndefined Should the check pass if no rules are |
115 | * defined for $permission in permissions.ini? |
116 | * |
117 | * @return mixed |
118 | */ |
119 | public function check( |
120 | $permission, |
121 | $defaultBehavior = null, |
122 | $passIfUndefined = false |
123 | ) { |
124 | // If no permission rule is defined and we're only checking defined |
125 | // permissions, bail out now.... |
126 | if ( |
127 | !$this->permissionManager->permissionRuleExists($permission) |
128 | && $passIfUndefined |
129 | ) { |
130 | return null; |
131 | } |
132 | |
133 | // Make sure the current user has permission to access the module: |
134 | if ($this->permissionManager->isAuthorized($permission) !== true) { |
135 | $dl = $this->permissionDeniedManager->getDeniedControllerBehavior( |
136 | $permission, |
137 | $defaultBehavior |
138 | ); |
139 | if ($dl === false) { |
140 | return null; |
141 | } |
142 | $exceptionDescription = $dl['exceptionMessage'] ?? 'Access denied.'; |
143 | switch (strtolower($dl['action'])) { |
144 | case 'promptlogin': |
145 | // If the user is already logged in, but we're getting a "prompt |
146 | // login" denied permission requirement, there is probably a |
147 | // configuration error somewhere; throw an exception rather than |
148 | // triggering an infinite login redirection loop. |
149 | if ($this->getIdentity()) { |
150 | throw new ForbiddenException( |
151 | 'Trying to prompt login due to denied ' . $permission |
152 | . ' permission, but a user is already logged in; ' |
153 | . 'possible configuration problem in permissions.ini.' |
154 | ); |
155 | } |
156 | $msg = empty($dl['value']) ? null : $dl['value']; |
157 | return $this->getController()->forceLogin($msg, [], false); |
158 | case 'showmessage': |
159 | return $this->getController()->redirect()->toRoute( |
160 | 'error-permissiondenied', |
161 | [], |
162 | ['query' => ['msg' => $dl['value']]] |
163 | ); |
164 | case 'exception': |
165 | $exceptionClass |
166 | = (isset($dl['value']) && class_exists($dl['value'])) |
167 | ? $dl['value'] : \VuFind\Exception\Forbidden::class; |
168 | $exception = new $exceptionClass($exceptionDescription); |
169 | if ($exception instanceof \Exception) { |
170 | throw $exception; |
171 | } |
172 | $this->logError('Permission configuration problem.'); |
173 | throw new \Exception("$exceptionClass is not an exception!"); |
174 | default: |
175 | throw new ForbiddenException($exceptionDescription); |
176 | } |
177 | } |
178 | return null; |
179 | } |
180 | |
181 | /** |
182 | * Get the current identity from the authentication manager. |
183 | * |
184 | * @return \LmcRbacMvc\Identity\IdentityInterface|null |
185 | */ |
186 | public function getIdentity() |
187 | { |
188 | return $this->authManager->getIdentity(); |
189 | } |
190 | } |