mirror of
https://github.com/pmmp/PocketMine-MP.git
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91 lines
3.1 KiB
PHP
91 lines
3.1 KiB
PHP
<?php
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/*
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*
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* ____ _ _ __ __ _ __ __ ____
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* | _ \ ___ ___| | _____| |_| \/ (_)_ __ ___ | \/ | _ \
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* | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
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* | __/ (_) | (__| < __/ |_| | | | | | | | __/_____| | | | __/
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* |_| \___/ \___|_|\_\___|\__|_| |_|_|_| |_|\___| |_| |_|_|
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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 Lesser General Public License as published by
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* 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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* @author PocketMine Team
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* @link http://www.pocketmine.net/
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*
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*
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*/
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declare(strict_types=1);
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namespace pocketmine\network\mcpe\encryption;
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use pocketmine\network\mcpe\JwtUtils;
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use pocketmine\scheduler\AsyncTask;
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use pocketmine\utils\AssumptionFailedError;
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use function igbinary_serialize;
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use function igbinary_unserialize;
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use function openssl_error_string;
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use function openssl_pkey_get_details;
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use function openssl_pkey_new;
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use function random_bytes;
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class PrepareEncryptionTask extends AsyncTask{
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private const TLS_KEY_ON_COMPLETION = "completion";
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private static ?\OpenSSLAsymmetricKey $SERVER_PRIVATE_KEY = null;
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private string $serverPrivateKey;
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private ?string $aesKey = null;
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private ?string $handshakeJwt = null;
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/**
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* @phpstan-param \Closure(string $encryptionKey, string $handshakeJwt) : void $onCompletion
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*/
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public function __construct(
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private string $clientPub,
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\Closure $onCompletion
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){
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if(self::$SERVER_PRIVATE_KEY === null){
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$serverPrivateKey = openssl_pkey_new(["ec" => ["curve_name" => "secp384r1"]]);
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if($serverPrivateKey === false){
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throw new \RuntimeException("openssl_pkey_new() failed: " . openssl_error_string());
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}
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self::$SERVER_PRIVATE_KEY = $serverPrivateKey;
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}
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$this->serverPrivateKey = igbinary_serialize(openssl_pkey_get_details(self::$SERVER_PRIVATE_KEY));
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$this->storeLocal(self::TLS_KEY_ON_COMPLETION, $onCompletion);
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}
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public function onRun() : void{
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/** @var mixed[] $serverPrivDetails */
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$serverPrivDetails = igbinary_unserialize($this->serverPrivateKey);
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$serverPriv = openssl_pkey_new($serverPrivDetails);
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if($serverPriv === false) throw new AssumptionFailedError("Failed to restore server signing key from details");
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$clientPub = JwtUtils::parseDerPublicKey($this->clientPub);
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$sharedSecret = EncryptionUtils::generateSharedSecret($serverPriv, $clientPub);
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$salt = random_bytes(16);
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$this->aesKey = EncryptionUtils::generateKey($sharedSecret, $salt);
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$this->handshakeJwt = EncryptionUtils::generateServerHandshakeJwt($serverPriv, $salt);
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}
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public function onCompletion() : void{
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/**
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* @var \Closure $callback
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* @phpstan-var \Closure(string $encryptionKey, string $handshakeJwt) : void $callback
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*/
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$callback = $this->fetchLocal(self::TLS_KEY_ON_COMPLETION);
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if($this->aesKey === null || $this->handshakeJwt === null){
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throw new AssumptionFailedError("Something strange happened here ...");
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}
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$callback($this->aesKey, $this->handshakeJwt);
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}
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}
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