mirror of
https://github.com/Part-DB/Part-DB-server.git
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49 lines
No EOL
1.8 KiB
PHP
49 lines
No EOL
1.8 KiB
PHP
<?php
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/*
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* This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
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*
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* Copyright (C) 2019 - 2024 Jan Böhmer (https://github.com/jbtronics)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published
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* by the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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declare(strict_types=1);
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namespace App\Helpers;
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use Symfony\Component\HttpFoundation\IpUtils;
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/**
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* Utils to assist with IP anonymization.
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* The IPUtils::anonymize has a certain edgecase with local-link addresses, which is handled here.
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* See: https://github.com/Part-DB/Part-DB-server/issues/782
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*/
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final class IPAnonymizer
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{
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public static function anonymize(string $ip): string
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{
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/**
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* If the IP contains a % symbol, then it is a local-link address with scoping according to RFC 4007
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* In that case, we only care about the part before the % symbol, as the following functions, can only work with
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* the IP address itself. As the scope can leak information (containing interface name), we do not want to
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* include it in our anonymized IP data.
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*/
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if (str_contains($ip, '%')) {
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$ip = substr($ip, 0, strpos($ip, '%'));
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}
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return IpUtils::anonymize($ip);
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}
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} |