UPnPNetworkInterface.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\network\upnp;
 
use pocketmine\network\NetworkInterface;
use pocketmine\utils\Internet;
use pocketmine\utils\InternetException;
 
final class UPnPNetworkInterface implements NetworkInterface{
    private ?string $serviceURL = null;
 
    public function __construct(
        private \Logger $logger,
        private string $ip,
        private int $port
    ){
        if(!Internet::$online){
            throw new \RuntimeException("Server is offline");
        }
 
        $this->logger = new \PrefixedLogger($logger, "UPnP Port Forwarder");
    }
 
    public function start() : void{
        $this->logger->info("Attempting to portforward...");
 
        try{
            $this->serviceURL = UPnP::getServiceUrl();
            UPnP::portForward($this->serviceURL, Internet::getInternalIP(), $this->port, $this->port);
            $this->logger->info("Forwarded $this->ip:$this->port to external port $this->port");
        }catch(UPnPException | InternetException $e){
            $this->logger->error("UPnP portforward failed: " . $e->getMessage());
        }
    }
 
    public function setName(string $name) : void{
 
    }
 
    public function tick() : void{
 
    }
 
    public function shutdown() : void{
        if($this->serviceURL === null){
            return;
        }
 
        UPnP::removePortForward($this->serviceURL, $this->port);
    }
}