783 lines
23 KiB
Go
783 lines
23 KiB
Go
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package main
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import (
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"bufio"
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"encoding/binary"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"net"
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"reflect"
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"strconv"
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"strings"
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)
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func PingIP(ip net.IP, port uint16, host string) (response Response, errOut error) {
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if host == "" {
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host = ip.String()
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}
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addr := &net.TCPAddr{IP: ip, Port: int(port)}
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conn, err := net.DialTCP("tcp", nil, addr)
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if err != nil {
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errOut = err
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return
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}
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didRestartConnection := false
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defer func(conn *net.TCPConn) {
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_ = conn.Close()
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}(conn)
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var state byte
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state = 0
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// 0 - handshaking
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// 1 - status
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// 2 - login
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// 3 - configuration
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// 4 - play(since this is a scanner, we don't need to actually join the game)
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response.Encryption = false
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response.CompressionThreshold = -2
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response.PluginDataSent = map[string]string{}
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handshakePacketPing, err := createHandshakePacket(-1, host, port, 1, response.CompressionThreshold)
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if err != nil {
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errOut = err
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return
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}
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_, err = conn.Write(handshakePacketPing)
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if err != nil {
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errOut = err
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return
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}
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statusRequestPacket, err := createStatusRequestPacket(response.CompressionThreshold)
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if err != nil {
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errOut = err
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return
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}
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_, err = conn.Write(statusRequestPacket)
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if err != nil {
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errOut = err
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return
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}
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var username string
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var PlayerUUID []byte
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compressionStarted := false
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reader := bufio.NewReader(conn)
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for {
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packetID, packetData, packetLength, err := readPacket(reader, response.CompressionThreshold)
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if err != nil {
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errOut = err
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return
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}
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switch packetID {
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case 0x00:
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if state == 0 {
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_, stringJson := receiveString(packetData)
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jsonDecoder := json.NewDecoder(strings.NewReader(stringJson))
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err = jsonDecoder.Decode(&response)
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if !didRestartConnection {
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handshakePacketJoin, err := createHandshakePacket(response.Version.Protocol, host, port, 2, response.CompressionThreshold)
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if err != nil {
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errOut = err
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return
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}
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err = conn.Close()
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if err != nil {
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errOut = err
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return
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}
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conn, err = net.DialTCP("tcp", nil, addr)
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if err != nil {
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errOut = err
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return
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}
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reader = bufio.NewReader(conn)
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_, err = conn.Write(handshakePacketJoin)
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if err != nil {
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errOut = err
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return
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}
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didRestartConnection = true
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}
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if len(response.Players.Sample) > 0 {
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username = response.Players.Sample[0].Name
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} else {
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username = "YeahAkis_"
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}
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response.Username = username
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PlayerUUID = constructOfflinePlayerUUID(username)
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response.RawMessage = stringJson
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if err != nil {
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errOut = err
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println(stringJson)
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return
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}
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state = 1
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loginPacket, err := createOfflineLoginPacket(username, response.CompressionThreshold)
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if err != nil {
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errOut = err
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return
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}
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_, err = conn.Write(loginPacket)
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if err != nil {
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errOut = err
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return
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}
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state = 2
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} else if state == 2 {
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currentOffset, component, err := receiveTextComponent(packetData)
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if err != nil {
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errOut = err
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return
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}
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if currentOffset != packetLength {
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errOut = errors.New("packet length mismatch")
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return
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}
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response.Message = component
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return
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}
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break
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case 0x01:
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if state == 3 {
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currentOffset, channelName := receiveString(packetData)
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nextOffset, channelValue := receiveString(packetData[currentOffset:])
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currentOffset += nextOffset
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if currentOffset != packetLength {
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errOut = errors.New("packet length mismatch")
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return
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}
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response.PluginDataSent[channelName] = channelValue
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} else if state == 2 {
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response.Encryption = true
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return
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} else if state == 0 {
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//ping response
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}
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break
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case 0x02:
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if state == 2 {
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playerRecvUUID := packetData[:16]
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currentOffset := 16
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if !reflect.DeepEqual(PlayerUUID, playerRecvUUID) {
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errOut = errors.New("player UUID mismatch")
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return
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}
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addToOffset, receivedUsername := receiveString(packetData[16:])
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currentOffset += addToOffset
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if receivedUsername != username {
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errOut = errors.New("username mismatch")
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return
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}
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//TODO property array handling
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confirmLoginPacket, err := createConfirmLoginPacket(response.CompressionThreshold, compressionStarted)
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if err != nil {
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errOut = err
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return
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}
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_, err = conn.Write(confirmLoginPacket)
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if err != nil {
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errOut = err
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return
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}
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clientBrandPacket, err := createClientBrandPacket("vanilla", response.CompressionThreshold, compressionStarted)
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if err != nil {
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errOut = err
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return
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}
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_, err = conn.Write(clientBrandPacket)
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if err != nil {
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errOut = err
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return
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}
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state = 3
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} else if state == 3 {
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currentOffset, component, err := receiveTextComponent(packetData)
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if err != nil {
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errOut = err
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return
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}
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if currentOffset != packetLength {
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errOut = errors.New("packet length mismatch")
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return
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}
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response.Message = component
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return
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}
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break
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case 0x03:
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if state == 2 {
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currentOffset, compression := receiveVarint(packetData)
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response.CompressionThreshold = compression
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compressionStarted = true
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if currentOffset != packetLength {
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errOut = errors.New("packet length mismatch")
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return
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}
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} else if state == 3 {
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confirmPlaySwitchPacket, err := createConfirmLoginPacket(response.CompressionThreshold, compressionStarted)
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if err != nil {
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errOut = err
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return
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}
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_, err = conn.Write(confirmPlaySwitchPacket)
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state = 4
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}
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break
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case 0x07:
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if state == 3 {
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currentOffset, registryID := receiveString(packetData)
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newOffset, entryCount := receiveVarint(packetData[currentOffset:])
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currentOffset += newOffset
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var entries []RegistryEntry
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for i := 0; i < int(entryCount); i++ {
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newOffset, entryID := receiveString(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, hasNBT := receiveBool(packetData[currentOffset:])
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currentOffset += newOffset
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var nbtData []byte
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if hasNBT {
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nbtData = packetData[currentOffset:]
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}
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entries = append(entries, RegistryEntry{EntryID: entryID, HasNBT: hasNBT, NBTData: nbtData})
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}
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registryData := RegistryData{RegistryID: registryID, Entries: entries}
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response.RegistryDatas = append(response.RegistryDatas, registryData)
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}
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break
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case 0x0b:
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if state == 4 {
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currentOffset, difficulty := receiveByte(packetData)
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newOffset, locked := receiveBool(packetData[currentOffset:])
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currentOffset += newOffset
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if currentOffset != packetLength {
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errOut = errors.New("packet length mismatch")
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return
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}
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response.ServerDifficulty = DifficultyObject{Difficulty: difficulty, Locked: locked}
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}
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case 0x0c:
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if state == 3 {
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currentOffset, flagCount := receiveVarint(packetData)
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for i := 0; i < int(flagCount); i++ {
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nextOffset, feature := receiveString(packetData[currentOffset:])
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response.FeatureFlags = append(response.FeatureFlags, feature)
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currentOffset += nextOffset
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}
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if currentOffset != packetLength {
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errOut = errors.New("packet length mismatch")
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}
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clientInformationPacket, err := createClientInformationPacket("en_us", 32, 0, true, 0x7f, false, false, false, response.CompressionThreshold, compressionStarted)
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if err != nil {
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errOut = err
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return
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}
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_, err = conn.Write(clientInformationPacket)
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if err != nil {
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errOut = err
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return
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}
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}
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break
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case 0x0d:
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if state == 3 {
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currentOffset, entryCount := receiveVarint(packetData)
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for i := 0; i < int(entryCount); i++ {
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nextOffset, registryIdentifier := receiveString(packetData[currentOffset:])
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currentOffset += nextOffset
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nextOffset, lengthSubarray := receiveVarint(packetData[currentOffset:])
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currentOffset += nextOffset
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var tagArray []TagArray
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for j := 0; j < int(lengthSubarray); j++ {
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nextOffset, tagIdentifier := receiveString(packetData[currentOffset:])
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currentOffset += nextOffset
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nextOffset, subSubArrayLength := receiveVarint(packetData[currentOffset:])
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currentOffset += nextOffset
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var varInts []int32
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for e := 0; e < int(subSubArrayLength); e++ {
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nextOffset, varIntInArray := receiveVarint(packetData[currentOffset:])
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currentOffset += nextOffset
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varInts = append(varInts, varIntInArray)
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}
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tagPiece := TagArray{TagName: tagIdentifier, Entries: varInts}
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tagArray = append(tagArray, tagPiece)
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}
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updateTag := UpdateTag{TagRegistryIdentifier: registryIdentifier, Tags: tagArray}
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response.Tags = append(response.Tags, updateTag)
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}
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}
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break
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case 0x0e:
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if state == 3 {
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currentOffset, enabledDatapacks := decodeEnabledDatapacks(packetData)
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if currentOffset != packetLength {
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errOut = errors.New("packet length mismatch")
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}
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response.EnabledDatapacks = enabledDatapacks
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datapackPacket, err := createEnabledDatapacksPacket(enabledDatapacks, response.CompressionThreshold, compressionStarted)
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if err != nil {
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errOut = err
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return
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}
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_, err = conn.Write(datapackPacket)
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if err != nil {
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errOut = err
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return
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}
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}
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break
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case 0x1D:
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if state == 4 {
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currentOffset, component, err := receiveTextComponent(packetData)
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if err != nil {
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errOut = err
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return
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}
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if currentOffset != packetLength {
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errOut = errors.New("packet length mismatch")
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return
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}
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response.Message = component
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return
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}
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break
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case 0x2b:
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if state == 4 {
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currentOffset, entityID := receiveInt32(packetData)
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newOffset, isHardCore := receiveBool(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, dimensionCount := receiveVarint(packetData[currentOffset:])
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currentOffset += newOffset
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var dimensions []string
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for i := 0; i < int(dimensionCount); i++ {
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newOffset, dimension := receiveString(packetData[currentOffset:])
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currentOffset += newOffset
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dimensions = append(dimensions, dimension)
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}
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newOffset, maxPlayers := receiveVarint(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, viewDistance := receiveVarint(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, simulationDistance := receiveVarint(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, reducedDebugInfo := receiveBool(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, enableRespawnScreen := receiveBool(packetData[currentOffset:])
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currentOffset += newOffset
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||
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newOffset, doLimitedCrafting := receiveBool(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, dimensionType := receiveVarint(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, dimensionName := receiveString(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, hashedSeed := receiveInt64(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, gameMode := receiveByte(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, previousGameMode := receiveByte(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, isDebug := receiveBool(packetData[currentOffset:])
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currentOffset += newOffset
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newOffset, isFlat := receiveBool(packetData[currentOffset:])
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currentOffset += newOffset
|
||
|
|
newOffset, hasDeathLocation := receiveBool(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
var deathDimensionName string
|
||
|
|
var deathLocation Position
|
||
|
|
|
||
|
|
if hasDeathLocation {
|
||
|
|
newOffset, deathDimensionName = receiveString(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, deathLocation = receivePosition(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
} else {
|
||
|
|
deathDimensionName = ""
|
||
|
|
deathLocation = Position{}
|
||
|
|
}
|
||
|
|
newOffset, portalCooldown := receiveVarint(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, enforcesSecureChat := receiveBool(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
if currentOffset != packetLength {
|
||
|
|
errOut = errors.New("packet length mismatch")
|
||
|
|
return
|
||
|
|
}
|
||
|
|
response.PlayerLoginInfo = LoginInfo{
|
||
|
|
EntityID: entityID,
|
||
|
|
Hardcore: isHardCore,
|
||
|
|
Dimensions: dimensions,
|
||
|
|
MaxPlayers: maxPlayers,
|
||
|
|
ViewDistance: viewDistance,
|
||
|
|
SimulationDistance: simulationDistance,
|
||
|
|
ReducedDebugInfo: reducedDebugInfo,
|
||
|
|
EnableRespawnScreen: enableRespawnScreen,
|
||
|
|
DoLimitedCrafting: doLimitedCrafting,
|
||
|
|
DimensionType: dimensionType,
|
||
|
|
DimensionName: dimensionName,
|
||
|
|
HashedSeed: hashedSeed,
|
||
|
|
GameMode: gameMode,
|
||
|
|
PreviousGameMode: previousGameMode,
|
||
|
|
IsDebug: isDebug,
|
||
|
|
IsFlat: isFlat,
|
||
|
|
HasDeathLocation: hasDeathLocation,
|
||
|
|
DeathDimensionName: deathDimensionName,
|
||
|
|
DeathLocation: deathLocation,
|
||
|
|
PortalCooldown: portalCooldown,
|
||
|
|
EnforcesSecureChat: enforcesSecureChat,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break
|
||
|
|
|
||
|
|
case 0x38:
|
||
|
|
if state == 4 {
|
||
|
|
currentOffset, flags := receiveByte(packetData)
|
||
|
|
newOffset, flyingSpeed := receiveFloat32(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, fieldOfViewModifer := receiveFloat32(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
if currentOffset != packetLength {
|
||
|
|
errOut = errors.New("packet length mismatch")
|
||
|
|
}
|
||
|
|
response.PlayerAbilities = PlayerAbilitiesObject{
|
||
|
|
Invulnerable: flags&0x01 != 0x00,
|
||
|
|
Flying: flags&0x02 != 0x00,
|
||
|
|
AllowFlying: flags&0x04 != 0x00,
|
||
|
|
CreativeMode: flags&0x08 != 0x00,
|
||
|
|
FlyingSpeed: flyingSpeed,
|
||
|
|
FieldOfViewModifier: fieldOfViewModifer,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break
|
||
|
|
|
||
|
|
case 0x53:
|
||
|
|
if state == 4 {
|
||
|
|
currentOffset, heldSlot := receiveByte(packetData)
|
||
|
|
if currentOffset != packetLength {
|
||
|
|
errOut = errors.New("packet length mismatch")
|
||
|
|
return
|
||
|
|
}
|
||
|
|
response.PlayerSlot = heldSlot
|
||
|
|
}
|
||
|
|
break
|
||
|
|
case 0x77:
|
||
|
|
if state == 4 {
|
||
|
|
//todo RECIPES
|
||
|
|
}
|
||
|
|
break
|
||
|
|
case 0x11:
|
||
|
|
//commands
|
||
|
|
if state == 4 {
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
break
|
||
|
|
|
||
|
|
case 0x41:
|
||
|
|
//recipe book
|
||
|
|
if state == 4 {
|
||
|
|
|
||
|
|
}
|
||
|
|
break
|
||
|
|
|
||
|
|
case 0x40:
|
||
|
|
//position update
|
||
|
|
if state == 4 {
|
||
|
|
currentOffset, x := receiveFloat64(packetData)
|
||
|
|
newOffset, y := receiveFloat64(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, z := receiveFloat64(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, yaw := receiveFloat32(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, pitch := receiveFloat32(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, flags := receiveByte(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, teleportId := receiveVarint(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
if currentOffset != packetLength {
|
||
|
|
errOut = errors.New("packet length mismatch")
|
||
|
|
return
|
||
|
|
}
|
||
|
|
teleportConfirmPacket, err := createTeleportConfirmPacket(teleportId, response.CompressionThreshold, compressionStarted)
|
||
|
|
if err != nil {
|
||
|
|
errOut = err
|
||
|
|
return
|
||
|
|
}
|
||
|
|
_, err = conn.Write(teleportConfirmPacket)
|
||
|
|
if err != nil {
|
||
|
|
errOut = err
|
||
|
|
return
|
||
|
|
}
|
||
|
|
response.PlayerLocation = PlayerPosition{
|
||
|
|
X: x,
|
||
|
|
Y: y,
|
||
|
|
Z: z,
|
||
|
|
Yaw: yaw,
|
||
|
|
Pitch: pitch,
|
||
|
|
IsXRelative: flags&0x01 != 0x00,
|
||
|
|
IsYRelative: flags&0x02 != 0x00,
|
||
|
|
IsZRelative: flags&0x04 != 0x00,
|
||
|
|
IsYawRelative: flags&0x08 != 0x00,
|
||
|
|
IsPitchRelative: flags&0x10 != 0x00,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break
|
||
|
|
|
||
|
|
case 0x4b:
|
||
|
|
if state == 4 {
|
||
|
|
currentOffset, motd, errx := receiveTextComponent(packetData[2:])
|
||
|
|
currentOffset += 2
|
||
|
|
err = errx
|
||
|
|
if err != nil {
|
||
|
|
errOut = err
|
||
|
|
return
|
||
|
|
}
|
||
|
|
response.Description = motd
|
||
|
|
newOffset, hasIcon := receiveBool(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
var iconSize int32
|
||
|
|
var iconData []byte
|
||
|
|
if hasIcon {
|
||
|
|
newOffset, iconSize = receiveVarint(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
iconData = packetData[currentOffset : currentOffset+int(iconSize)]
|
||
|
|
response.Favicon.PngData = iconData
|
||
|
|
} else {
|
||
|
|
iconSize = 0
|
||
|
|
iconData = []byte{}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break
|
||
|
|
|
||
|
|
case 0x3e:
|
||
|
|
if state == 4 {
|
||
|
|
currentOffset, actions := receiveByte(packetData)
|
||
|
|
newOffset, numberOfPlayers := receiveVarint(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
|
||
|
|
for i := 0; i < int(numberOfPlayers); i++ {
|
||
|
|
player := PlayerUpdate{}
|
||
|
|
player.UUID = packetData[currentOffset : currentOffset+16]
|
||
|
|
currentOffset += 16
|
||
|
|
|
||
|
|
if actions&0x01 != 0x00 {
|
||
|
|
newOffset, player.Name = receiveString(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
|
||
|
|
newOffset, numberOfProperties := receiveVarint(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
|
||
|
|
for x := 0; x < int(numberOfProperties); x++ {
|
||
|
|
property := PlayerProperty{}
|
||
|
|
|
||
|
|
newOffset, property.Name = receiveString(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, property.Value = receiveString(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
|
||
|
|
newOffset, propertySigned := receiveByte(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
|
||
|
|
if propertySigned != 0 {
|
||
|
|
newOffset, property.Signature = receiveString(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
}
|
||
|
|
|
||
|
|
player.Properties = append(player.Properties, property)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if actions&0x02 != 0x00 {
|
||
|
|
newOffset, hasSignatureData := receiveBool(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
|
||
|
|
if hasSignatureData {
|
||
|
|
player.SignatureData = &PlayerSignatureData{}
|
||
|
|
|
||
|
|
player.SignatureData.ChatSessionID = packetData[currentOffset : currentOffset+16]
|
||
|
|
currentOffset += 16
|
||
|
|
|
||
|
|
newOffset, player.SignatureData.PublicKeyExpiryTime = receiveInt64(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
|
||
|
|
newOffset, encodedPublicKeySize := receiveVarint(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
player.SignatureData.EncodedPublicKey = packetData[currentOffset : currentOffset+int(encodedPublicKeySize)]
|
||
|
|
currentOffset += int(encodedPublicKeySize)
|
||
|
|
|
||
|
|
newOffset, publicKeySignatureSize := receiveVarint(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
player.SignatureData.PublicKeySignature = packetData[currentOffset : currentOffset+int(publicKeySignatureSize)]
|
||
|
|
currentOffset += int(publicKeySignatureSize)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if actions&0x04 != 0x00 {
|
||
|
|
newOffset, player.GameMode = receiveVarint(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
}
|
||
|
|
|
||
|
|
if actions&0x08 != 0x00 {
|
||
|
|
newOffset, player.Listed = receiveBool(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
}
|
||
|
|
|
||
|
|
if actions&0x10 != 0x00 {
|
||
|
|
newOffset, player.Ping = receiveVarint(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
}
|
||
|
|
|
||
|
|
if actions&0x20 != 0x00 {
|
||
|
|
newOffset, hasDisplayName := receiveBool(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
|
||
|
|
if hasDisplayName {
|
||
|
|
newOffset, displayName, err := receiveTextComponent(packetData[currentOffset:])
|
||
|
|
if err != nil {
|
||
|
|
errOut = err
|
||
|
|
return
|
||
|
|
}
|
||
|
|
currentOffset += newOffset
|
||
|
|
player.DisplayName = &displayName
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
response.PlayersInfo = append(response.PlayersInfo, player)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break
|
||
|
|
case 0x25:
|
||
|
|
if state == 4 {
|
||
|
|
currentOffset, x := receiveFloat64(packetData)
|
||
|
|
newOffset, z := receiveFloat64(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, oldDiameter := receiveFloat64(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, newDiameter := receiveFloat64(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, speed := receiveVarlong(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, portalTeleportBoundary := receiveVarint(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, warningBlocks := receiveVarint(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
newOffset, warningTime := receiveVarint(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
if currentOffset != packetLength {
|
||
|
|
errOut = errors.New("packet length mismatch")
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
response.WorldBorder = WorldBorderInfo{
|
||
|
|
X: x,
|
||
|
|
Z: z,
|
||
|
|
OldDiameter: oldDiameter,
|
||
|
|
NewDiameter: newDiameter,
|
||
|
|
Speed: speed,
|
||
|
|
PortalTeleportBoundry: portalTeleportBoundary,
|
||
|
|
WarningBlocks: warningBlocks,
|
||
|
|
WarningTime: warningTime,
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
break
|
||
|
|
case 0x64:
|
||
|
|
if state == 4 {
|
||
|
|
currentOffset, worldAge := receiveInt64(packetData)
|
||
|
|
newOffset, timeOfDay := receiveInt64(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
if currentOffset != packetLength {
|
||
|
|
errOut = errors.New("packet length mismatch")
|
||
|
|
return
|
||
|
|
}
|
||
|
|
response.WorldAge = worldAge
|
||
|
|
response.TimeOfDay = timeOfDay
|
||
|
|
}
|
||
|
|
break
|
||
|
|
|
||
|
|
case 0x56:
|
||
|
|
if state == 4 {
|
||
|
|
currentOffset, location := receivePosition(packetData)
|
||
|
|
newOffset, angle := receiveFloat32(packetData[currentOffset:])
|
||
|
|
currentOffset += newOffset
|
||
|
|
if currentOffset != packetLength {
|
||
|
|
errOut = errors.New("packet length mismatch")
|
||
|
|
return
|
||
|
|
}
|
||
|
|
response.DefaultPositionSpawn = DefaultSpawnPosition{
|
||
|
|
Location: location,
|
||
|
|
Angle: angle,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break
|
||
|
|
|
||
|
|
case 0x22:
|
||
|
|
if state == 4 {
|
||
|
|
currentOffset, event := receiveByte(packetData)
|
||
|
|
nextOffset, value := receiveFloat32(packetData[currentOffset:])
|
||
|
|
currentOffset += nextOffset
|
||
|
|
if currentOffset != packetLength {
|
||
|
|
errOut = errors.New("packet length mismatch")
|
||
|
|
return
|
||
|
|
}
|
||
|
|
if event == 13 && value == 0 {
|
||
|
|
chatMessagePacket, err := createChatMessagePacket("Thanks for letting me scan this server", response.CompressionThreshold, compressionStarted)
|
||
|
|
if err != nil {
|
||
|
|
errOut = err
|
||
|
|
return
|
||
|
|
}
|
||
|
|
_, err = conn.Write(chatMessagePacket)
|
||
|
|
if err != nil {
|
||
|
|
errOut = err
|
||
|
|
return
|
||
|
|
}
|
||
|
|
return //we dont want chunks
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
case 0x1f:
|
||
|
|
if state == 4 {
|
||
|
|
//todo entityEvent
|
||
|
|
}
|
||
|
|
break
|
||
|
|
|
||
|
|
default:
|
||
|
|
packetIDBytes := make([]byte, 8)
|
||
|
|
binary.LittleEndian.PutUint64(packetIDBytes, uint64(packetID))
|
||
|
|
fmt.Printf("Unknown packet type %d (%s)\n", packetID, hex.EncodeToString(packetIDBytes))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func PingHostname(host string, port uint16) (Response, error) {
|
||
|
|
|
||
|
|
tcpServer, err := net.ResolveTCPAddr("tcp", host+":"+strconv.Itoa(int(port)))
|
||
|
|
|
||
|
|
if err != nil {
|
||
|
|
return Response{}, err
|
||
|
|
}
|
||
|
|
return PingIP(tcpServer.IP, port, host)
|
||
|
|
|
||
|
|
}
|