<?php
/************************************************************************
 * This file is part of EspoCRM.
 *
 * EspoCRM – Open Source CRM application.
 * Copyright (C) 2014-2025 EspoCRM, Inc.
 * Website: https://www.espocrm.com
 *
 * 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 <https://www.gnu.org/licenses/>.
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
 ************************************************************************/

namespace Espo\Core\Authentication\Util;

use CIDRmatch\CIDRmatch;

class IpAddressUtil
{
    /**
     * @param string $ipAddress An IP address.
     * @param string[] $whitelist A whitelist. IPs or IP ranges in CIDR notation.
     */
    public function isInWhitelist(string $ipAddress, array $whitelist): bool
    {
        $cidrMatch = new CIDRmatch();

        foreach ($whitelist as $whiteIpAddress) {
            if ($ipAddress === $whiteIpAddress) {
                return true;
            }

            if (
                str_contains($whiteIpAddress, '/') &&
                $cidrMatch->match($ipAddress, $whiteIpAddress)
            ) {
                return true;
            }
        }

        return false;
    }
}