blob: 30bd59db2c17810086ea97c18a74893f2a33c5a2 (
plain)
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
|
<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OC\Security;
use OC\Net\HostnameClassifier;
use OC\Net\IpAddressClassifier;
use OCP\IConfig;
use OCP\Security\IRemoteHostValidator;
use Psr\Log\LoggerInterface;
use function strtolower;
use function substr;
use function urldecode;
/**
* @internal
*/
final class RemoteHostValidator implements IRemoteHostValidator {
public function __construct(
private IConfig $config,
private HostnameClassifier $hostnameClassifier,
private IpAddressClassifier $ipAddressClassifier,
private LoggerInterface $logger,
) {
}
public function isValid(string $host): bool {
if ($this->config->getSystemValueBool('allow_local_remote_servers', false)) {
return true;
}
$host = idn_to_utf8(strtolower(urldecode($host)));
if ($host === false) {
return false;
}
// Remove brackets from IPv6 addresses
if (str_starts_with($host, '[') && str_ends_with($host, ']')) {
$host = substr($host, 1, -1);
}
if ($this->hostnameClassifier->isLocalHostname($host)
|| $this->ipAddressClassifier->isLocalAddress($host)) {
$this->logger->warning("Host $host was not connected to because it violates local access rules");
return false;
}
return true;
}
}
|
