|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
/* |
|
6
|
|
|
* @copyright 2022 Christoph Wurst <[email protected]> |
|
7
|
|
|
* |
|
8
|
|
|
* @author 2022 Christoph Wurst <[email protected]> |
|
9
|
|
|
* |
|
10
|
|
|
* @license GNU AGPL version 3 or any later version |
|
11
|
|
|
* |
|
12
|
|
|
* This program is free software: you can redistribute it and/or modify |
|
13
|
|
|
* it under the terms of the GNU Affero General Public License as |
|
14
|
|
|
* published by the Free Software Foundation, either version 3 of the |
|
15
|
|
|
* License, or (at your option) any later version. |
|
16
|
|
|
* |
|
17
|
|
|
* This program is distributed in the hope that it will be useful, |
|
18
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
19
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
20
|
|
|
* GNU Affero General Public License for more details. |
|
21
|
|
|
* |
|
22
|
|
|
* You should have received a copy of the GNU Affero General Public License |
|
23
|
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>. |
|
24
|
|
|
*/ |
|
25
|
|
|
|
|
26
|
|
|
namespace OC\Net; |
|
27
|
|
|
|
|
28
|
|
|
use function filter_var; |
|
29
|
|
|
use function in_array; |
|
30
|
|
|
use function strrchr; |
|
31
|
|
|
use function substr; |
|
32
|
|
|
use function substr_count; |
|
33
|
|
|
|
|
34
|
|
|
/** |
|
35
|
|
|
* Classifier for network hostnames |
|
36
|
|
|
* |
|
37
|
|
|
* @internal |
|
38
|
|
|
*/ |
|
39
|
|
|
class HostnameClassifier { |
|
40
|
|
|
private const LOCAL_TOPLEVEL_DOMAINS = [ |
|
41
|
|
|
'local', |
|
42
|
|
|
'localhost', |
|
43
|
|
|
'intranet', |
|
44
|
|
|
'internal', |
|
45
|
|
|
'private', |
|
46
|
|
|
'corp', |
|
47
|
|
|
'home', |
|
48
|
|
|
'lan', |
|
49
|
|
|
]; |
|
50
|
|
|
|
|
51
|
|
|
/** |
|
52
|
|
|
* Check host identifier for local hostname |
|
53
|
|
|
* |
|
54
|
|
|
* IP addresses are not considered local. Use the IpAddressClassifier for those. |
|
55
|
|
|
* |
|
56
|
|
|
* @param string $hostname |
|
57
|
|
|
* |
|
58
|
|
|
* @return bool |
|
59
|
|
|
*/ |
|
60
|
|
|
public function isLocalHostname(string $hostname): bool { |
|
61
|
|
|
// Disallow local network top-level domains from RFC 6762 |
|
62
|
|
|
$topLevelDomain = substr((strrchr($hostname, '.') ?: ''), 1); |
|
63
|
|
|
if (in_array($topLevelDomain, self::LOCAL_TOPLEVEL_DOMAINS)) { |
|
64
|
|
|
return true; |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
|
|
// Disallow hostname only |
|
68
|
|
|
if (substr_count($hostname, '.') === 0 && !filter_var($hostname, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) { |
|
69
|
|
|
return true; |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
|
|
return false; |
|
73
|
|
|
} |
|
74
|
|
|
} |
|
75
|
|
|
|
nextcloud /
server
