1
|
|
|
<?php |
2
|
|
|
|
3
|
|
|
namespace Integrations\Services; |
4
|
|
|
|
5
|
|
|
use App\Models\Role; |
6
|
|
|
use App\Models\User; |
7
|
|
|
use Illuminate\Contracts\Auth\Authenticatable; |
8
|
|
|
use Illuminate\Database\Eloquent\Builder; |
9
|
|
|
use Integrations\Exceptions\LdapException; |
10
|
|
|
use Integrations\Models\Access; |
11
|
|
|
use Integrations\Models\UserRepo; |
12
|
|
|
|
13
|
|
|
/** |
14
|
|
|
* Class LdapService |
15
|
|
|
* Handles any app-specific LDAP tasks. |
16
|
|
|
* |
17
|
|
|
* @package Integrations\Services |
18
|
|
|
*/ |
19
|
|
|
class LdapService |
20
|
|
|
{ |
21
|
|
|
protected $ldap; |
22
|
|
|
protected $ldapConnection; |
23
|
|
|
protected $config; |
24
|
|
|
protected $userRepo; |
25
|
|
|
protected $enabled; |
26
|
|
|
|
27
|
|
|
/** |
28
|
|
|
* LdapService constructor. |
29
|
|
|
* |
30
|
|
|
* @param Ldap $ldap |
31
|
|
|
* @param \Integrations\Models\UserRepo $userRepo |
32
|
|
|
*/ |
33
|
|
|
public function __construct(Access\Ldap $ldap, UserRepo $userRepo) |
34
|
|
|
{ |
35
|
|
|
$this->ldap = $ldap; |
36
|
|
|
$this->config = config('services.ldap'); |
37
|
|
|
$this->userRepo = $userRepo; |
38
|
|
|
$this->enabled = config('auth.method') === 'ldap'; |
39
|
|
|
} |
40
|
|
|
|
41
|
|
|
/** |
42
|
|
|
* Check if groups should be synced. |
43
|
|
|
* |
44
|
|
|
* @return bool |
45
|
|
|
*/ |
46
|
|
|
public function shouldSyncGroups() |
47
|
|
|
{ |
48
|
|
|
return $this->enabled && $this->config['user_to_groups'] !== false; |
49
|
|
|
} |
50
|
|
|
|
51
|
|
|
/** |
52
|
|
|
* Search for attributes for a specific user on the ldap |
53
|
|
|
* |
54
|
|
|
* @param string $userName |
55
|
|
|
* @param array $attributes |
56
|
|
|
* @return null|array |
57
|
|
|
* @throws LdapException |
58
|
|
|
*/ |
59
|
|
|
private function getUserWithAttributes($userName, $attributes) |
60
|
|
|
{ |
61
|
|
|
$ldapConnection = $this->getConnection(); |
62
|
|
|
$this->bindSystemUser($ldapConnection); |
63
|
|
|
|
64
|
|
|
// Find user |
65
|
|
|
$userFilter = $this->buildFilter($this->config['user_filter'], ['user' => $userName]); |
66
|
|
|
$baseDn = $this->config['base_dn']; |
67
|
|
|
|
68
|
|
|
$followReferrals = $this->config['follow_referrals'] ? 1 : 0; |
69
|
|
|
$this->ldap->setOption($ldapConnection, LDAP_OPT_REFERRALS, $followReferrals); |
70
|
|
|
$users = $this->ldap->searchAndGetEntries($ldapConnection, $baseDn, $userFilter, $attributes); |
71
|
|
|
if ($users['count'] === 0) { |
72
|
|
|
return null; |
73
|
|
|
} |
74
|
|
|
|
75
|
|
|
return $users[0]; |
76
|
|
|
} |
77
|
|
|
|
78
|
|
|
/** |
79
|
|
|
* Get the details of a user from LDAP using the given username. |
80
|
|
|
* User found via configurable user filter. |
81
|
|
|
* |
82
|
|
|
* @param $userName |
83
|
|
|
* @return array|null |
84
|
|
|
* @throws LdapException |
85
|
|
|
*/ |
86
|
|
|
public function getUserDetails($userName) |
87
|
|
|
{ |
88
|
|
|
$emailAttr = $this->config['email_attribute']; |
89
|
|
|
$displayNameAttr = $this->config['display_name_attribute']; |
90
|
|
|
|
91
|
|
|
$user = $this->getUserWithAttributes($userName, ['cn', 'uid', 'dn', $emailAttr, $displayNameAttr]); |
92
|
|
|
|
93
|
|
|
if ($user === null) { |
94
|
|
|
return null; |
95
|
|
|
} |
96
|
|
|
|
97
|
|
|
$userCn = $this->getUserResponseProperty($user, 'cn', null); |
98
|
|
|
return [ |
99
|
|
|
'uid' => $this->getUserResponseProperty($user, 'uid', $user['dn']), |
100
|
|
|
'name' => $this->getUserResponseProperty($user, $displayNameAttr, $userCn), |
101
|
|
|
'dn' => $user['dn'], |
102
|
|
|
'email' => $this->getUserResponseProperty($user, $emailAttr, null), |
103
|
|
|
]; |
104
|
|
|
} |
105
|
|
|
|
106
|
|
|
/** |
107
|
|
|
* Get a property from an LDAP user response fetch. |
108
|
|
|
* Handles properties potentially being part of an array. |
109
|
|
|
* |
110
|
|
|
* @param array $userDetails |
111
|
|
|
* @param string $propertyKey |
112
|
|
|
* @param $defaultValue |
113
|
|
|
* @return mixed |
114
|
|
|
*/ |
115
|
|
|
protected function getUserResponseProperty(array $userDetails, string $propertyKey, $defaultValue) |
116
|
|
|
{ |
117
|
|
|
if (isset($userDetails[$propertyKey])) { |
118
|
|
|
return (is_array($userDetails[$propertyKey]) ? $userDetails[$propertyKey][0] : $userDetails[$propertyKey]); |
119
|
|
|
} |
120
|
|
|
|
121
|
|
|
return $defaultValue; |
122
|
|
|
} |
123
|
|
|
|
124
|
|
|
/** |
125
|
|
|
* @param Authenticatable $user |
126
|
|
|
* @param string $username |
127
|
|
|
* @param string $password |
128
|
|
|
* @return bool |
129
|
|
|
* @throws LdapException |
130
|
|
|
*/ |
131
|
|
|
public function validateUserCredentials(Authenticatable $user, $username, $password) |
132
|
|
|
{ |
133
|
|
|
$ldapUser = $this->getUserDetails($username); |
134
|
|
|
if ($ldapUser === null) { |
135
|
|
|
return false; |
136
|
|
|
} |
137
|
|
|
|
138
|
|
|
if ($ldapUser['uid'] !== $user->external_auth_id) { |
|
|
|
|
139
|
|
|
return false; |
140
|
|
|
} |
141
|
|
|
|
142
|
|
|
$ldapConnection = $this->getConnection(); |
143
|
|
|
try { |
144
|
|
|
$ldapBind = $this->ldap->bind($ldapConnection, $ldapUser['dn'], $password); |
145
|
|
|
} catch (\ErrorException $e) { |
|
|
|
|
146
|
|
|
$ldapBind = false; |
147
|
|
|
} |
148
|
|
|
|
149
|
|
|
return $ldapBind; |
150
|
|
|
} |
151
|
|
|
|
152
|
|
|
/** |
153
|
|
|
* Bind the system user to the LDAP connection using the given credentials |
154
|
|
|
* otherwise anonymous access is attempted. |
155
|
|
|
* |
156
|
|
|
* @param $connection |
157
|
|
|
* @throws LdapException |
158
|
|
|
*/ |
159
|
|
|
protected function bindSystemUser($connection) |
160
|
|
|
{ |
161
|
|
|
$ldapDn = $this->config['dn']; |
162
|
|
|
$ldapPass = $this->config['pass']; |
163
|
|
|
|
164
|
|
|
$isAnonymous = ($ldapDn === false || $ldapPass === false); |
165
|
|
|
if ($isAnonymous) { |
166
|
|
|
$ldapBind = $this->ldap->bind($connection); |
167
|
|
|
} else { |
168
|
|
|
$ldapBind = $this->ldap->bind($connection, $ldapDn, $ldapPass); |
169
|
|
|
} |
170
|
|
|
|
171
|
|
|
if (!$ldapBind) { |
172
|
|
|
throw new LdapException(($isAnonymous ? trans('errors.ldap_fail_anonymous') : trans('errors.ldap_fail_authed'))); |
173
|
|
|
} |
174
|
|
|
} |
175
|
|
|
|
176
|
|
|
/** |
177
|
|
|
* Get the connection to the LDAP server. |
178
|
|
|
* Creates a new connection if one does not exist. |
179
|
|
|
* |
180
|
|
|
* @return resource |
181
|
|
|
* @throws LdapException |
182
|
|
|
*/ |
183
|
|
|
protected function getConnection() |
184
|
|
|
{ |
185
|
|
|
if ($this->ldapConnection !== null) { |
186
|
|
|
return $this->ldapConnection; |
187
|
|
|
} |
188
|
|
|
|
189
|
|
|
// Check LDAP extension in installed |
190
|
|
|
if (!function_exists('ldap_connect') && config('app.env') !== 'testing') { |
191
|
|
|
throw new LdapException(trans('errors.ldap_extension_not_installed')); |
192
|
|
|
} |
193
|
|
|
|
194
|
|
|
// Get port from server string and protocol if specified. |
195
|
|
|
$ldapServer = explode(':', $this->config['server']); |
196
|
|
|
$hasProtocol = preg_match('/^ldaps{0,1}\:\/\//', $this->config['server']) === 1; |
197
|
|
|
if (!$hasProtocol) { |
198
|
|
|
array_unshift($ldapServer, ''); |
199
|
|
|
} |
200
|
|
|
$hostName = $ldapServer[0] . ($hasProtocol?':':'') . $ldapServer[1]; |
201
|
|
|
$defaultPort = $ldapServer[0] === 'ldaps' ? 636 : 389; |
202
|
|
|
|
203
|
|
|
/* |
204
|
|
|
* Check if TLS_INSECURE is set. The handle is set to NULL due to the nature of |
205
|
|
|
* the LDAP_OPT_X_TLS_REQUIRE_CERT option. It can only be set globally and not |
206
|
|
|
* per handle. |
207
|
|
|
*/ |
208
|
|
|
if ($this->config['tls_insecure']) { |
209
|
|
|
$this->ldap->setOption(null, LDAP_OPT_X_TLS_REQUIRE_CERT, LDAP_OPT_X_TLS_NEVER); |
210
|
|
|
} |
211
|
|
|
|
212
|
|
|
$ldapConnection = $this->ldap->connect($hostName, count($ldapServer) > 2 ? intval($ldapServer[2]) : $defaultPort); |
213
|
|
|
|
214
|
|
|
if ($ldapConnection === false) { |
215
|
|
|
throw new LdapException(trans('errors.ldap_cannot_connect')); |
216
|
|
|
} |
217
|
|
|
|
218
|
|
|
// Set any required options |
219
|
|
|
if ($this->config['version']) { |
220
|
|
|
$this->ldap->setVersion($ldapConnection, $this->config['version']); |
221
|
|
|
} |
222
|
|
|
|
223
|
|
|
$this->ldapConnection = $ldapConnection; |
224
|
|
|
return $this->ldapConnection; |
225
|
|
|
} |
226
|
|
|
|
227
|
|
|
/** |
228
|
|
|
* Build a filter string by injecting common variables. |
229
|
|
|
* |
230
|
|
|
* @param string $filterString |
231
|
|
|
* @param array $attrs |
232
|
|
|
* @return string |
233
|
|
|
*/ |
234
|
|
|
protected function buildFilter($filterString, array $attrs) |
235
|
|
|
{ |
236
|
|
|
$newAttrs = []; |
237
|
|
|
foreach ($attrs as $key => $attrText) { |
238
|
|
|
$newKey = '${' . $key . '}'; |
239
|
|
|
$newAttrs[$newKey] = $this->ldap->escape($attrText); |
240
|
|
|
} |
241
|
|
|
return strtr($filterString, $newAttrs); |
242
|
|
|
} |
243
|
|
|
|
244
|
|
|
/** |
245
|
|
|
* Get the groups a user is a part of on ldap |
246
|
|
|
* |
247
|
|
|
* @param string $userName |
248
|
|
|
* @return array |
249
|
|
|
* @throws LdapException |
250
|
|
|
*/ |
251
|
|
|
public function getUserGroups($userName) |
252
|
|
|
{ |
253
|
|
|
$groupsAttr = $this->config['group_attribute']; |
254
|
|
|
$user = $this->getUserWithAttributes($userName, [$groupsAttr]); |
255
|
|
|
|
256
|
|
|
if ($user === null) { |
257
|
|
|
return []; |
258
|
|
|
} |
259
|
|
|
|
260
|
|
|
$userGroups = $this->groupFilter($user); |
261
|
|
|
$userGroups = $this->getGroupsRecursive($userGroups, []); |
262
|
|
|
return $userGroups; |
263
|
|
|
} |
264
|
|
|
|
265
|
|
|
/** |
266
|
|
|
* Get the parent groups of an array of groups |
267
|
|
|
* |
268
|
|
|
* @param array $groupsArray |
269
|
|
|
* @param array $checked |
270
|
|
|
* @return array |
271
|
|
|
* @throws LdapException |
272
|
|
|
*/ |
273
|
|
|
private function getGroupsRecursive($groupsArray, $checked) |
274
|
|
|
{ |
275
|
|
|
$groups_to_add = []; |
276
|
|
|
foreach ($groupsArray as $groupName) { |
277
|
|
|
if (in_array($groupName, $checked)) { |
278
|
|
|
continue; |
279
|
|
|
} |
280
|
|
|
|
281
|
|
|
$groupsToAdd = $this->getGroupGroups($groupName); |
282
|
|
|
$groups_to_add = array_merge($groups_to_add, $groupsToAdd); |
283
|
|
|
$checked[] = $groupName; |
284
|
|
|
} |
285
|
|
|
$groupsArray = array_unique(array_merge($groupsArray, $groups_to_add), SORT_REGULAR); |
286
|
|
|
|
287
|
|
|
if (!empty($groups_to_add)) { |
288
|
|
|
return $this->getGroupsRecursive($groupsArray, $checked); |
289
|
|
|
} else { |
290
|
|
|
return $groupsArray; |
291
|
|
|
} |
292
|
|
|
} |
293
|
|
|
|
294
|
|
|
/** |
295
|
|
|
* Get the parent groups of a single group |
296
|
|
|
* |
297
|
|
|
* @param string $groupName |
298
|
|
|
* @return array |
299
|
|
|
* @throws LdapException |
300
|
|
|
*/ |
301
|
|
|
private function getGroupGroups($groupName) |
302
|
|
|
{ |
303
|
|
|
$ldapConnection = $this->getConnection(); |
304
|
|
|
$this->bindSystemUser($ldapConnection); |
305
|
|
|
|
306
|
|
|
$followReferrals = $this->config['follow_referrals'] ? 1 : 0; |
307
|
|
|
$this->ldap->setOption($ldapConnection, LDAP_OPT_REFERRALS, $followReferrals); |
308
|
|
|
|
309
|
|
|
$baseDn = $this->config['base_dn']; |
310
|
|
|
$groupsAttr = strtolower($this->config['group_attribute']); |
311
|
|
|
|
312
|
|
|
$groupFilter = 'CN=' . $this->ldap->escape($groupName); |
313
|
|
|
$groups = $this->ldap->searchAndGetEntries($ldapConnection, $baseDn, $groupFilter, [$groupsAttr]); |
314
|
|
|
if ($groups['count'] === 0) { |
315
|
|
|
return []; |
316
|
|
|
} |
317
|
|
|
|
318
|
|
|
$groupGroups = $this->groupFilter($groups[0]); |
319
|
|
|
return $groupGroups; |
320
|
|
|
} |
321
|
|
|
|
322
|
|
|
/** |
323
|
|
|
* Filter out LDAP CN and DN language in a ldap search return |
324
|
|
|
* Gets the base CN (common name) of the string |
325
|
|
|
* |
326
|
|
|
* @param array $userGroupSearchResponse |
327
|
|
|
* @return array |
328
|
|
|
*/ |
329
|
|
|
protected function groupFilter(array $userGroupSearchResponse) |
330
|
|
|
{ |
331
|
|
|
$groupsAttr = strtolower($this->config['group_attribute']); |
332
|
|
|
$ldapGroups = []; |
333
|
|
|
$count = 0; |
334
|
|
|
|
335
|
|
|
if (isset($userGroupSearchResponse[$groupsAttr]['count'])) { |
336
|
|
|
$count = (int) $userGroupSearchResponse[$groupsAttr]['count']; |
337
|
|
|
} |
338
|
|
|
|
339
|
|
|
for ($i=0; $i<$count; $i++) { |
340
|
|
|
$dnComponents = $this->ldap->explodeDn($userGroupSearchResponse[$groupsAttr][$i], 1); |
341
|
|
|
if (!in_array($dnComponents[0], $ldapGroups)) { |
342
|
|
|
$ldapGroups[] = $dnComponents[0]; |
343
|
|
|
} |
344
|
|
|
} |
345
|
|
|
|
346
|
|
|
return $ldapGroups; |
347
|
|
|
} |
348
|
|
|
|
349
|
|
|
/** |
350
|
|
|
* Sync the LDAP groups to the user roles for the current user |
351
|
|
|
* |
352
|
|
|
* @param \App\Models\User $user |
353
|
|
|
* @param string $username |
354
|
|
|
* @throws LdapException |
355
|
|
|
*/ |
356
|
|
|
public function syncGroups(User $user, string $username) |
357
|
|
|
{ |
358
|
|
|
$userLdapGroups = $this->getUserGroups($username); |
359
|
|
|
|
360
|
|
|
// Get the ids for the roles from the names |
361
|
|
|
$ldapGroupsAsRoles = $this->matchLdapGroupsToSystemsRoles($userLdapGroups); |
362
|
|
|
|
363
|
|
|
// Sync groups |
364
|
|
|
if ($this->config['remove_from_groups']) { |
365
|
|
|
$user->roles()->sync($ldapGroupsAsRoles); |
366
|
|
|
$this->userRepo->attachDefaultRole($user); |
367
|
|
|
} else { |
368
|
|
|
$user->roles()->syncWithoutDetaching($ldapGroupsAsRoles); |
369
|
|
|
} |
370
|
|
|
} |
371
|
|
|
|
372
|
|
|
/** |
373
|
|
|
* Match an array of group names from LDAP to App system roles. |
374
|
|
|
* Formats LDAP group names to be lower-case and hyphenated. |
375
|
|
|
* |
376
|
|
|
* @param array $groupNames |
377
|
|
|
* @return \Illuminate\Support\Collection |
378
|
|
|
*/ |
379
|
|
|
protected function matchLdapGroupsToSystemsRoles(array $groupNames) |
380
|
|
|
{ |
381
|
|
|
foreach ($groupNames as $i => $groupName) { |
382
|
|
|
$groupNames[$i] = str_replace(' ', '-', trim(strtolower($groupName))); |
383
|
|
|
} |
384
|
|
|
|
385
|
|
|
$roles = Role::query()->where( |
386
|
|
|
function (Builder $query) use ($groupNames) { |
387
|
|
|
$query->whereIn('name', $groupNames); |
388
|
|
|
foreach ($groupNames as $groupName) { |
389
|
|
|
$query->orWhere('external_auth_id', 'LIKE', '%' . $groupName . '%'); |
390
|
|
|
} |
391
|
|
|
} |
392
|
|
|
)->get(); |
393
|
|
|
|
394
|
|
|
$matchedRoles = $roles->filter( |
395
|
|
|
function (Role $role) use ($groupNames) { |
396
|
|
|
return $this->roleMatchesGroupNames($role, $groupNames); |
397
|
|
|
} |
398
|
|
|
); |
399
|
|
|
|
400
|
|
|
return $matchedRoles->pluck('id'); |
401
|
|
|
} |
402
|
|
|
|
403
|
|
|
/** |
404
|
|
|
* Check a role against an array of group names to see if it matches. |
405
|
|
|
* Checked against role 'external_auth_id' if set otherwise the name of the role. |
406
|
|
|
* |
407
|
|
|
* @param \App\Models\Role $role |
408
|
|
|
* @param array $groupNames |
409
|
|
|
* @return bool |
410
|
|
|
*/ |
411
|
|
|
protected function roleMatchesGroupNames(Role $role, array $groupNames) |
412
|
|
|
{ |
413
|
|
|
if ($role->external_auth_id) { |
414
|
|
|
$externalAuthIds = explode(',', strtolower($role->external_auth_id)); |
415
|
|
|
foreach ($externalAuthIds as $externalAuthId) { |
416
|
|
|
if (in_array(trim($externalAuthId), $groupNames)) { |
417
|
|
|
return true; |
418
|
|
|
} |
419
|
|
|
} |
420
|
|
|
return false; |
421
|
|
|
} |
422
|
|
|
|
423
|
|
|
$roleName = str_replace(' ', '-', trim(strtolower($role->display_name))); |
424
|
|
|
return in_array($roleName, $groupNames); |
425
|
|
|
} |
426
|
|
|
} |
427
|
|
|
|
If you access a property on an interface, you most likely code against a concrete implementation of the interface.
Available Fixes
Adding an additional type check:
Changing the type hint: