pocketmine\network\protocol\LoginPacket::decode PHP Метод

    public function decode()
    {
        $this->protocol = $this->getInt();
        if (!in_array($this->protocol, Info::ACCEPTED_PROTOCOLS)) {
            return;
            //Do not attempt to decode for non-accepted protocols
        }
        $str = zlib_decode($this->get($this->getInt()), 1024 * 1024 * 64);
        $this->setBuffer($str, 0);
        $time = time();
        $chainData = json_decode($this->get($this->getLInt()))->{"chain"};
        // Start with the trusted one
        $chainKey = self::MOJANG_PUBKEY;
        while (!empty($chainData)) {
            foreach ($chainData as $index => $chain) {
                list($verified, $webtoken) = $this->decodeToken($chain, $chainKey);
                if (isset($webtoken["extraData"])) {
                    if (isset($webtoken["extraData"]["displayName"])) {
                        $this->username = $webtoken["extraData"]["displayName"];
                    }
                    if (isset($webtoken["extraData"]["identity"])) {
                        $this->clientUUID = $webtoken["extraData"]["identity"];
                    }
                }
                if ($verified) {
                    $verified = isset($webtoken["nbf"]) && $webtoken["nbf"] <= $time && isset($webtoken["exp"]) && $webtoken["exp"] > $time;
                }
                if ($verified and isset($webtoken["identityPublicKey"])) {
                    // Looped key chain. #blamemojang
                    if ($webtoken["identityPublicKey"] != self::MOJANG_PUBKEY) {
                        $chainKey = $webtoken["identityPublicKey"];
                    }
                    break;
                } elseif ($chainKey === null) {
                    // We have already gave up
                    break;
                }
            }
            if (!$verified && $chainKey !== null) {
                $chainKey = null;
            } else {
                unset($chainData[$index]);
            }
        }
        list($verified, $skinToken) = $this->decodeToken($this->get($this->getLInt()), $chainKey);
        if (isset($skinToken["ClientRandomId"])) {
            $this->clientId = $skinToken["ClientRandomId"];
        }
        if (isset($skinToken["ServerAddress"])) {
            $this->serverAddress = $skinToken["ServerAddress"];
        }
        if (isset($skinToken["SkinData"])) {
            $this->skin = base64_decode($skinToken["SkinData"]);
        }
        if (isset($skinToken["SkinId"])) {
            $this->skinId = $skinToken["SkinId"];
        }
        if ($verified) {
            $this->identityPublicKey = $chainKey;
        }
    }