1
|
|
|
<?php |
2
|
|
|
|
3
|
|
|
namespace PSFS\base; |
4
|
|
|
|
5
|
|
|
use PSFS\base\types\SingletonTrait; |
6
|
|
|
|
7
|
|
|
|
8
|
|
|
/** |
9
|
|
|
* Class Security |
10
|
|
|
* @package PSFS |
11
|
|
|
*/ |
12
|
|
|
class Security |
13
|
|
|
{ |
14
|
|
|
|
15
|
|
|
use SingletonTrait; |
16
|
|
|
/** |
17
|
|
|
* @var array $user |
18
|
|
|
*/ |
19
|
|
|
private $user; |
20
|
|
|
|
21
|
|
|
/** |
22
|
|
|
* @var array $admin |
23
|
|
|
*/ |
24
|
|
|
private $admin; |
25
|
|
|
|
26
|
|
|
private $authorized = FALSE; |
27
|
|
|
|
28
|
|
|
protected $session; |
29
|
|
|
|
30
|
|
|
/** |
31
|
|
|
* Constructor por defecto |
32
|
|
|
*/ |
33
|
2 |
|
public function __construct() |
34
|
|
|
{ |
35
|
2 |
|
if (PHP_SESSION_NONE === session_status()) { |
36
|
1 |
|
session_start(); |
37
|
|
|
} |
38
|
2 |
|
$this->session = (is_null($_SESSION)) ? array() : $_SESSION; |
39
|
2 |
|
if (NULL === $this->getSessionKey('__FLASH_CLEAR__')) { |
40
|
2 |
|
$this->clearFlashes(); |
41
|
2 |
|
$this->setSessionKey('__FLASH_CLEAR__', microtime(TRUE)); |
42
|
2 |
|
} |
43
|
2 |
|
$this->user = (array_key_exists(sha1('USER'), $this->session)) ? unserialize($this->session[sha1('USER')]) : NULL; |
|
|
|
|
44
|
2 |
|
$this->admin = (array_key_exists(sha1('ADMIN'), $this->session)) ? unserialize($this->session[sha1('ADMIN')]) : NULL; |
|
|
|
|
45
|
2 |
|
} |
46
|
|
|
|
47
|
|
|
/** |
48
|
|
|
* Método estático que devuelve los perfiles de la plataforma |
49
|
|
|
* @return array |
50
|
|
|
*/ |
51
|
|
|
public static function getProfiles() |
52
|
|
|
{ |
53
|
|
|
return array( |
54
|
|
|
sha1('superadmin') => _('Administrador'), |
55
|
|
|
sha1('admin') => _('Gestor'), |
56
|
|
|
sha1('user') => _('Usuario'), |
57
|
|
|
); |
58
|
|
|
} |
59
|
|
|
|
60
|
|
|
/** |
61
|
|
|
* Method that returns all the available profiles |
62
|
|
|
*/ |
63
|
|
|
public function getAdminProfiles() |
64
|
|
|
{ |
65
|
|
|
static::getProfiles(); |
66
|
|
|
} |
67
|
|
|
|
68
|
|
|
/** |
69
|
|
|
* Método estático que devuelve los perfiles disponibles |
70
|
|
|
* @return array |
|
|
|
|
71
|
|
|
*/ |
72
|
|
|
public static function getCleanProfiles() |
73
|
|
|
{ |
74
|
|
|
return array( |
75
|
|
|
'__SUPER_ADMIN__' => sha1('superadmin'), |
76
|
|
|
'__ADMIN__' => sha1('admin'), |
77
|
|
|
'__USER__' => sha1('user'), |
78
|
|
|
); |
79
|
|
|
} |
80
|
|
|
|
81
|
|
|
/** |
82
|
|
|
* Método estático que devuelve los perfiles disponibles |
83
|
|
|
* @return array |
|
|
|
|
84
|
|
|
*/ |
85
|
|
|
public function getAdminCleanProfiles() |
86
|
|
|
{ |
87
|
|
|
return static::getCleanProfiles(); |
88
|
|
|
} |
89
|
|
|
|
90
|
|
|
/** |
91
|
|
|
* Método que guarda los administradores |
92
|
|
|
* |
93
|
|
|
* @param array $user |
94
|
|
|
* |
95
|
|
|
* @return bool |
96
|
|
|
*/ |
97
|
|
|
public static function save($user) |
98
|
|
|
{ |
99
|
|
|
$admins = array(); |
100
|
|
View Code Duplication |
if (file_exists(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json')) { |
101
|
|
|
$admins = json_decode(file_get_contents(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json'), TRUE); |
102
|
|
|
} |
103
|
|
|
$admins[$user['username']]['hash'] = sha1($user['username'] . $user['password']); |
104
|
|
|
$admins[$user['username']]['profile'] = $user['profile']; |
105
|
|
|
|
106
|
|
|
return (FALSE !== file_put_contents(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json', json_encode($admins, JSON_PRETTY_PRINT))); |
|
|
|
|
107
|
|
|
} |
108
|
|
|
|
109
|
|
|
/** |
110
|
|
|
* Method to save a new admin user |
111
|
|
|
* @param array $user |
112
|
|
|
* @return bool |
113
|
|
|
*/ |
114
|
|
|
public function saveUser($user) { |
115
|
|
|
$saved = false; |
116
|
|
|
if(!empty($user)) { |
117
|
|
|
$saved = static::save($user); |
118
|
|
|
} |
119
|
|
|
return $saved; |
120
|
|
|
} |
121
|
|
|
|
122
|
|
|
/** |
123
|
|
|
* Servicio que actualiza los datos del usuario |
124
|
|
|
* |
125
|
|
|
* @param $user |
126
|
|
|
*/ |
127
|
|
|
public function updateUser($user) |
128
|
|
|
{ |
129
|
|
|
$this->user = $user; |
130
|
|
|
} |
131
|
|
|
|
132
|
|
|
/** |
133
|
|
|
* Método que devuelve los administradores de una plataforma |
134
|
|
|
* @return array|mixed |
135
|
|
|
*/ |
136
|
|
|
public function getAdmins() |
137
|
|
|
{ |
138
|
|
|
$admins = array(); |
139
|
|
View Code Duplication |
if (file_exists(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json')) { |
140
|
|
|
$admins = json_decode(file_get_contents(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json'), TRUE); |
141
|
|
|
} |
142
|
|
|
|
143
|
|
|
return $admins; |
144
|
|
|
} |
145
|
|
|
|
146
|
|
|
/** |
147
|
|
|
* Método que devuelve si un usuario tiene privilegios para acceder a la zona de administración |
148
|
|
|
* |
149
|
|
|
* @param null $user |
150
|
|
|
* @param null $pass |
151
|
|
|
* |
152
|
|
|
* @return bool |
153
|
|
|
* @throws \HttpException |
154
|
|
|
*/ |
155
|
|
|
public function checkAdmin($user = NULL, $pass = NULL) |
156
|
|
|
{ |
157
|
|
|
Logger::log('Checking admin session'); |
158
|
|
|
if (!$this->authorized) { |
159
|
|
|
$request = Request::getInstance(); |
160
|
|
|
if (!file_exists(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json')) { |
161
|
|
|
//Si no hay fichero de usuarios redirigimos directamente al gestor |
162
|
|
|
return Router::getInstance()->getAdmin()->adminers(); |
163
|
|
|
} |
164
|
|
|
$admins = $this->getAdmins(); |
165
|
|
|
//Sacamos las credenciales de la petición |
166
|
|
|
$user = $user ?: $request->getServer('PHP_AUTH_USER'); |
167
|
|
|
$pass = $pass ?: $request->getServer('PHP_AUTH_PW'); |
168
|
|
|
if (NULL === $user || (array_key_exists($user, $admins) && empty($admins[$user]))) { |
169
|
|
|
list($user, $pass) = $this->getAdminFromCookie(); |
170
|
|
|
} |
171
|
|
|
if (!empty($user) && !empty($admins[$user])) { |
172
|
|
|
$auth = $admins[$user]['hash']; |
173
|
|
|
$this->authorized = ($auth == sha1($user . $pass)); |
174
|
|
|
$this->admin = array( |
175
|
|
|
'alias' => $user, |
176
|
|
|
'profile' => $admins[$user]['profile'], |
177
|
|
|
); |
178
|
|
|
} |
179
|
|
|
} |
180
|
|
|
|
181
|
|
|
return $this->authorized; |
182
|
|
|
} |
183
|
|
|
|
184
|
|
|
/** |
185
|
|
|
* Método que obtiene el usuario y contraseña de la cookie de sesión de administración |
186
|
|
|
* @return array |
187
|
|
|
*/ |
188
|
|
|
protected function getAdminFromCookie() |
189
|
|
|
{ |
190
|
|
|
$auth_cookie = Request::getInstance()->getCookie($this->getHash()); |
191
|
|
|
$user = $pass = array(); |
192
|
|
|
if (!empty($auth_cookie)) { |
193
|
|
|
list($user, $pass) = explode(':', base64_decode($auth_cookie)); |
194
|
|
|
} |
195
|
|
|
|
196
|
|
|
return array($user, $pass); |
197
|
|
|
} |
198
|
|
|
|
199
|
|
|
/** |
200
|
|
|
* Método privado para la generación del hash de la cookie de administración |
201
|
|
|
* @return string |
202
|
|
|
*/ |
203
|
|
|
public function getHash() |
204
|
|
|
{ |
205
|
|
|
return substr(md5('admin'), 0, 8); |
206
|
|
|
} |
207
|
|
|
|
208
|
|
|
/** |
209
|
|
|
* Método que devuelve el usuario logado |
210
|
|
|
* @return user |
|
|
|
|
211
|
|
|
*/ |
212
|
|
|
public function getUser() |
213
|
|
|
{ |
214
|
|
|
return $this->user; |
215
|
|
|
} |
216
|
|
|
|
217
|
|
|
/** |
218
|
|
|
* Método que devuelve el usuario administrador logado |
219
|
|
|
* @return array |
220
|
|
|
*/ |
221
|
|
|
public function getAdmin() |
222
|
|
|
{ |
223
|
|
|
return $this->admin; |
224
|
|
|
} |
225
|
|
|
|
226
|
|
|
/** |
227
|
|
|
* Método que calcula si se está logado o para acceder a administración |
228
|
|
|
* @return bool |
229
|
|
|
*/ |
230
|
|
|
public function canAccessRestrictedAdmin() |
231
|
|
|
{ |
232
|
|
|
return $this->admin || preg_match('/^\/admin\/login/i', Request::requestUri()); |
233
|
|
|
} |
234
|
|
|
|
235
|
|
|
/** |
236
|
|
|
* Servicio que devuelve una pantalla de error porque se necesita estar authenticado |
237
|
|
|
* |
238
|
|
|
* @param string|null $route |
239
|
|
|
* |
240
|
|
|
* @return string|null |
241
|
|
|
*/ |
242
|
|
|
public function notAuthorized($route) |
243
|
|
|
{ |
244
|
|
|
return Template::getInstance()->render('notauthorized.html.twig', array( |
245
|
|
|
'route' => $route, |
246
|
|
|
)); |
247
|
|
|
} |
248
|
|
|
|
249
|
|
|
/** |
250
|
|
|
* Servicio que chequea si un usuario es super administrador o no |
251
|
|
|
* @return bool |
252
|
|
|
*/ |
253
|
|
|
public function isSuperAdmin() |
254
|
|
|
{ |
255
|
|
|
$users = $this->getAdmins(); |
256
|
|
|
$logged = $this->getAdminFromCookie(); |
257
|
|
|
$profiles = Security::getCleanProfiles(); |
258
|
|
|
if ($users[$logged[0]]) { |
259
|
|
|
$security = $users[$logged[0]]['profile']; |
260
|
|
|
|
261
|
|
|
return $profiles['__SUPER_ADMIN__'] === $security; |
262
|
|
|
} |
263
|
|
|
|
264
|
|
|
return FALSE; |
265
|
|
|
} |
266
|
|
|
|
267
|
|
|
/** |
268
|
|
|
* Servicio que devuelve un dato de sesión |
269
|
|
|
* |
270
|
|
|
* @param string $key |
271
|
|
|
* |
272
|
|
|
* @return mixed |
273
|
|
|
*/ |
274
|
1 |
|
public function getSessionKey($key) |
275
|
|
|
{ |
276
|
1 |
|
$data = NULL; |
277
|
1 |
|
if (array_key_exists($key, $this->session)) { |
278
|
|
|
$data = $this->session[$key]; |
279
|
|
|
} |
280
|
|
|
|
281
|
1 |
|
return $data; |
282
|
|
|
} |
283
|
|
|
|
284
|
|
|
/** |
285
|
|
|
* Servicio que setea una variable de sesión |
286
|
|
|
* |
287
|
|
|
* @param string $key |
288
|
|
|
* @param mixed $data |
289
|
|
|
* |
290
|
|
|
* @return Security |
291
|
|
|
*/ |
292
|
1 |
|
public function setSessionKey($key, $data = NULL) |
293
|
|
|
{ |
294
|
1 |
|
$this->session[$key] = $data; |
295
|
|
|
|
296
|
1 |
|
return $this; |
297
|
|
|
} |
298
|
|
|
|
299
|
|
|
/** |
300
|
|
|
* Servicio que devuelve los mensajes flash de sesiones |
301
|
|
|
* @return mixed |
302
|
|
|
*/ |
303
|
|
|
public function getFlashes() |
304
|
|
|
{ |
305
|
|
|
$flashes = $this->getSessionKey(sha1('FLASHES')); |
306
|
|
|
|
307
|
|
|
return (NULL !== $flashes) ? $flashes : array(); |
308
|
|
|
} |
309
|
|
|
|
310
|
|
|
/** |
311
|
|
|
* Servicio que limpia los mensajes flash |
312
|
|
|
* @return $this |
313
|
|
|
*/ |
314
|
1 |
|
public function clearFlashes() |
315
|
|
|
{ |
316
|
1 |
|
$this->setSessionKey(sha1('FLASHES'), NULL); |
317
|
|
|
|
318
|
1 |
|
return $this; |
319
|
|
|
} |
320
|
|
|
|
321
|
|
|
/** |
322
|
|
|
* Servicio que inserta un flash en sesión |
323
|
|
|
* |
324
|
|
|
* @param string $key |
325
|
|
|
* @param mixed $data |
326
|
|
|
*/ |
327
|
|
|
public function setFlash($key, $data = NULL) |
328
|
|
|
{ |
329
|
|
|
$flashes = $this->getFlashes(); |
330
|
|
|
if (!is_array($flashes)) { |
331
|
|
|
$flashes = array(); |
332
|
|
|
} |
333
|
|
|
$flashes[$key] = $data; |
334
|
|
|
$this->setSessionKey(sha1('FLASHES'), $flashes); |
335
|
|
|
} |
336
|
|
|
|
337
|
|
|
/** |
338
|
|
|
* Servicio que devuelve un flash de sesión |
339
|
|
|
* |
340
|
|
|
* @param string $key |
341
|
|
|
* |
342
|
|
|
* @return mixed |
343
|
|
|
*/ |
344
|
|
|
public function getFlash($key) |
345
|
|
|
{ |
346
|
|
|
$flashes = $this->getFlashes(); |
347
|
|
|
|
348
|
|
|
return (NULL !== $key && array_key_exists($key, $flashes)) ? $flashes[$key] : NULL; |
349
|
|
|
} |
350
|
|
|
|
351
|
|
|
/** |
352
|
|
|
* Servicio que actualiza |
353
|
|
|
* |
354
|
|
|
* @param boolean $closeSession |
355
|
|
|
* |
356
|
|
|
* @return Security |
357
|
|
|
*/ |
358
|
|
|
public function updateSession($closeSession = FALSE) |
359
|
|
|
{ |
360
|
|
|
Logger::log('Update session'); |
361
|
|
|
$_SESSION = $this->session; |
362
|
|
|
$_SESSION[sha1('USER')] = serialize($this->user); |
363
|
|
|
$_SESSION[sha1('ADMIN')] = serialize($this->admin); |
364
|
|
|
if ($closeSession) { |
365
|
|
|
Logger::log('Close session'); |
366
|
|
|
session_write_close(); |
367
|
|
|
} |
368
|
|
|
Logger::log('Session updated'); |
369
|
|
|
return $this; |
370
|
|
|
} |
371
|
|
|
|
372
|
|
|
/** |
373
|
|
|
* Servicio que limpia la sesión |
374
|
|
|
*/ |
375
|
|
|
public function closeSession() |
376
|
|
|
{ |
377
|
|
|
session_destroy(); |
378
|
|
|
session_regenerate_id(TRUE); |
379
|
|
|
} |
380
|
|
|
|
381
|
|
|
/** |
382
|
|
|
* Extract parts from token |
383
|
|
|
* @param string $token |
384
|
|
|
* |
385
|
|
|
* @return array |
|
|
|
|
386
|
|
|
*/ |
387
|
|
|
private static function extractTokenParts($token) |
388
|
|
|
{ |
389
|
|
|
$axis = 0; |
390
|
|
|
$parts = array(); |
391
|
|
|
try { |
392
|
|
|
$partLength = floor(strlen($token) / 10); |
393
|
|
|
for ($i = 0, $ct = ceil(strlen($token) / $partLength); $i < $ct; $i++) { |
394
|
|
|
$parts[] = substr($token, $axis, $partLength); |
395
|
|
|
$axis += $partLength; |
396
|
|
|
} |
397
|
|
|
} catch(\Exception $e) { |
398
|
|
|
$partLength = 0; |
399
|
|
|
} |
400
|
|
|
|
401
|
|
|
return array($partLength, $parts); |
402
|
|
|
} |
403
|
|
|
|
404
|
|
|
/** |
405
|
|
|
* Extract Ts and Module from token |
406
|
|
|
* @param array $parts |
407
|
|
|
* @param int $partLength |
408
|
|
|
* |
409
|
|
|
* @return array |
|
|
|
|
410
|
|
|
*/ |
411
|
|
|
private static function extractTsAndMod(array &$parts, $partLength) |
412
|
|
|
{ |
413
|
|
|
$ts = ''; |
|
|
|
|
414
|
|
|
$mod = ''; |
415
|
|
|
foreach ($parts as &$part) { |
416
|
|
|
if (strlen($part) == $partLength) { |
417
|
|
|
$ts .= substr($part, 0, 1); |
418
|
|
|
$mod .= substr($part, $partLength - 2, 2); |
419
|
|
|
$part = substr($part, 1, $partLength - 3); |
420
|
|
|
} |
421
|
|
|
} |
422
|
|
|
return array($ts, $mod); |
423
|
|
|
} |
424
|
|
|
|
425
|
|
|
/** |
426
|
|
|
* Decode token to check authorized request |
427
|
|
|
* @param string $token |
428
|
|
|
* @param string $module |
429
|
|
|
* |
430
|
|
|
* @return null|string |
431
|
|
|
*/ |
432
|
|
|
private static function decodeToken($token, $module = 'PSFS') |
433
|
|
|
{ |
434
|
|
|
$decoded = NULL; |
435
|
|
|
list($partLength, $parts) = self::extractTokenParts($token); |
436
|
|
|
list($ts, $mod) = self::extractTsAndMod($parts, $partLength); |
|
|
|
|
437
|
|
|
$hashMod = substr(strtoupper(sha1($module)), strlen($ts) / 2, strlen($ts) * 2); |
438
|
|
|
if (time() - (integer)$ts < 300 && $hashMod === $mod) { |
439
|
|
|
$decoded = implode('', $parts); |
440
|
|
|
} |
441
|
|
|
return $decoded; |
442
|
|
|
} |
443
|
|
|
|
444
|
|
|
/** |
445
|
|
|
* Generate a authorized token |
446
|
|
|
* @param string $secret |
447
|
|
|
* @param string $module |
448
|
|
|
* |
449
|
|
|
* @return string |
450
|
|
|
*/ |
451
|
|
|
public static function generateToken($secret, $module = 'PSFS') |
452
|
|
|
{ |
453
|
|
|
$ts = time(); |
|
|
|
|
454
|
|
|
$hashModule = substr(strtoupper(sha1($module)), strlen($ts) / 2, strlen($ts) * 2); |
455
|
|
|
$hash = hash('sha256', $secret); |
456
|
|
|
$insert = floor(strlen($hash) / strlen($ts)); |
457
|
|
|
$j = 0; |
|
|
|
|
458
|
|
|
$token = ''; |
459
|
|
|
for ($i = 0, $ct = strlen($ts); $i < $ct; $i++) { |
460
|
|
|
$token .= substr($ts, $i, 1) . substr($hash, $j, $insert) . substr($hashModule, $i, 2); |
461
|
|
|
$j += $insert; |
462
|
|
|
} |
463
|
|
|
$token .= substr($hash, ($insert * strlen($ts)), strlen($hash) - ($insert * strlen($ts))); |
464
|
|
|
return $token; |
465
|
|
|
} |
466
|
|
|
|
467
|
|
|
/** |
468
|
|
|
* Checks if auth token is correct |
469
|
|
|
* @param string $token |
470
|
|
|
* @param string $secret |
471
|
|
|
* @param string $module |
472
|
|
|
* |
473
|
|
|
* @return bool |
474
|
|
|
*/ |
475
|
|
|
public static function checkToken($token, $secret, $module = 'PSFS') |
476
|
|
|
{ |
477
|
|
|
if (0 === strlen($token) || 0 === strlen($secret)) { |
478
|
|
|
return false; |
479
|
|
|
} |
480
|
|
|
$module = strtolower($module); |
481
|
|
|
$decodedToken = self::decodeToken($token, $module); |
482
|
|
|
$expectedToken = self::decodeToken(self::generateToken($secret, $module), $module); |
483
|
|
|
|
484
|
|
|
return $decodedToken === $expectedToken; |
485
|
|
|
} |
486
|
|
|
|
487
|
|
|
} |
488
|
|
|
|
Overly long lines are hard to read on any screen. Most code styles therefor impose a maximum limit on the number of characters in a line.