mirror of
https://github.com/nextcloud/server.git
synced 2026-06-15 11:41:20 -04:00
90 lines
2.4 KiB
PHP
90 lines
2.4 KiB
PHP
<?php
|
|
|
|
declare(strict_types=1);
|
|
|
|
/*
|
|
* @copyright 2022 Christoph Wurst <christoph@winzerhof-wurst.at>
|
|
*
|
|
* @author 2022 Christoph Wurst <christoph@winzerhof-wurst.at>
|
|
*
|
|
* @license GNU AGPL version 3 or any later version
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
namespace OC\Net;
|
|
|
|
use IPLib\Address\IPv4;
|
|
use IPLib\Address\IPv6;
|
|
use IPLib\Factory;
|
|
use IPLib\ParseStringFlag;
|
|
use Symfony\Component\HttpFoundation\IpUtils;
|
|
use function filter_var;
|
|
|
|
/**
|
|
* Classifier for IP addresses
|
|
*
|
|
* @internal
|
|
*/
|
|
class IpAddressClassifier {
|
|
private const LOCAL_ADDRESS_RANGES = [
|
|
'100.64.0.0/10', // See RFC 6598
|
|
'192.0.0.0/24', // See RFC 6890
|
|
];
|
|
|
|
/**
|
|
* Check host identifier for local IPv4 and IPv6 address ranges
|
|
*
|
|
* Hostnames are not considered local. Use the HostnameClassifier for those.
|
|
*
|
|
* @param string $ip
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function isLocalAddress(string $ip): bool {
|
|
$parsedIp = Factory::parseAddressString(
|
|
$ip,
|
|
ParseStringFlag::IPV4_MAYBE_NON_DECIMAL | ParseStringFlag::IPV4ADDRESS_MAYBE_NON_QUAD_DOTTED
|
|
);
|
|
if ($parsedIp === null) {
|
|
/* Not an IP */
|
|
return false;
|
|
}
|
|
/* Replace by normalized form */
|
|
if ($parsedIp instanceof IPv6) {
|
|
$ipv4 = $parsedIp->toIPv4();
|
|
$ipv6Bytes = $parsedIp->getBytes();
|
|
if ($ipv4) {
|
|
$ip = (string)$ipv4;
|
|
} elseif (array_slice($ipv6Bytes, 0, 4) === [0x00, 0x64, 0xFF, 0x9B]) {
|
|
$ip = (string)IPv4::fromBytes(array_slice($ipv6Bytes, -4, 4));
|
|
} else {
|
|
$ip = (string)$parsedIp;
|
|
}
|
|
} else {
|
|
$ip = (string)$parsedIp;
|
|
}
|
|
|
|
if (!filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) {
|
|
/* Range address */
|
|
return true;
|
|
}
|
|
if (IpUtils::checkIp($ip, self::LOCAL_ADDRESS_RANGES)) {
|
|
/* Within local range */
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|