QueryHandler Class Reference

Public Member Functions
	__construct ()
	regenerateInfo ()
	regenerateToken ()
	handle ($address, $port, $packet)

Static Public Member Functions
static	getTokenString ($token, $salt)

Data Fields
	$lastToken
	$token
	$longData
	$shortData
	$timeout
const	HANDSHAKE = 9
const	STATISTICS = 0

Constructor & Destructor Documentation

__construct()

__construct

(

)

QueryHandler constructor.

                                 {
        $this->server = Server::getInstance();
        $this->server->getLogger()->info($this->server->getLanguage()->translateString("pocketmine.server.query.start"));
        $addr = ($ip = $this->server->getIp()) != "" ? $ip : "0.0.0.0";
        $port = $this->server->getPort();
        $this->server->getLogger()->info($this->server->getLanguage()->translateString("pocketmine.server.query.info", [$port]));
        /*
        The Query protocol is built on top of the existing Minecraft PE UDP network stack.
        Because the 0xFE packet does not exist in the MCPE protocol,
        we can identify Query packets and remove them from the packet queue.
        
        Then, the Query class handles itself sending the packets in raw form, because
        packets can conflict with the MCPE ones.
        */

        $this->regenerateToken();
        $this->lastToken = $this->token;
        $this->regenerateInfo();
        $this->server->getLogger()->info($this->server->getLanguage()->translateString("pocketmine.server.query.running", [$addr, $port]));
    }

Member Function Documentation

getTokenString()

static getTokenString (   $token,   $salt  )

static

Parameters

$token
$salt

Returns

int

                                                        {
        return Binary::readInt(substr(hash("sha512", $salt . ":" . $token, true), 7, 4));
    }

handle()

handle	(		$address,
			$port,
			$packet
	)

Parameters

$address
$port
$packet

                                                    {
        $offset = 2;
        $packetType = ord($packet{$offset++});
        $sessionID = Binary::readInt(substr($packet, $offset, 4));
        $offset += 4;
        $payload = substr($packet, $offset);

        switch($packetType){
            case self::HANDSHAKE: //Handshake
                $reply = chr(self::HANDSHAKE);
                $reply .= Binary::writeInt($sessionID);
                $reply .= self::getTokenString($this->token, $address) . "\x00";

                $this->server->getNetwork()->sendPacket($address, $port, $reply);
                break;
            case self::STATISTICS: //Stat
                $token = Binary::readInt(substr($payload, 0, 4));
                if($token !== self::getTokenString($this->token, $address) and $token !== self::getTokenString($this->lastToken, $address)){
                    break;
                }
                $reply = chr(self::STATISTICS);
                $reply .= Binary::writeInt($sessionID);

                if($this->timeout < microtime(true)){
                    $this->regenerateInfo();
                }

                if(strlen($payload) === 8){
                    $reply .= $this->longData;
                }else{
                    $reply .= $this->shortData;
                }
                $this->server->getNetwork()->sendPacket($address, $port, $reply);
                break;
        }
    }

regenerateInfo()

regenerateInfo

(

)

                                    {
        $ev = $this->server->getQueryInformation();
        $this->longData = $ev->getLongQuery();
        $this->shortData = $ev->getShortQuery();
        $this->timeout = microtime(true) + $ev->getTimeout();
    }

regenerateToken()

regenerateToken

(

)

                                     {
        $this->lastToken = $this->token;
        $this->token = random_bytes(16);
    }

Field Documentation

$lastToken

$lastToken

$longData

$longData

$shortData

$shortData

$timeout

$timeout

$token

$token

HANDSHAKE

const HANDSHAKE = 9

STATISTICS

const STATISTICS = 0

---

The documentation for this class was generated from the following file:

• src/pocketmine/network/query/QueryHandler.php