func (cc *GameConnection) HandleNewConnection() {
defer func() {
delete(cc.Server.PlayerConnections, cc.Player.Uuid)
cc.EntityServer = nil
}()
cc.Server.PlayerConnections[cc.Player.Uuid] = make(chan *protocol.Packet, 256)
cc.Player.EntityId = int64(len(cc.Server.PlayerConnections)+1) + cc.Server.Offset
cc.Player.HeadY = 105
cc.Player.FeetY = 105 - 1.62
cc.Player.OnGround = true
var err error
cc.EntityServer, err = cc.Server.FindEntityServer(cc.Player)
if err != nil {
log.Printf("Failed to connect to entity server: %s", err)
protocol.WriteNewPacket(cc.ConnEncrypted, protocol.PreAuthKickID, protocol.CreateJsonMessage("Failed to connect to entity server!", ""))
return
}
cc.EntityServer.SendMessage(&protobuf.PlayerAction{
Player: cc.Player,
Action: protobuf.PlayerAction_JOIN,
})
var x, z int64
for x = -8; x < 8; x++ {
for z = -8; z < 8; z++ {
conn, err := cc.Server.Cluster.ChunkConnection(x, z, cc.Server)
if err != nil {
log.Printf("Failed to connect to chunk server (%d, %d): %s", x, z, err)
protocol.WriteNewPacket(cc.ConnEncrypted, protocol.PreAuthKickID, protocol.CreateJsonMessage("Failed to connect to chunk server!", ""))
return
}
conn.SendMessage(&protobuf.ChunkRequest{
X: x,
Z: z,
Uuid: cc.Player.Uuid,
})
}
}
protocol.WriteNewPacket(cc.ConnEncrypted, protocol.LoginSuccessID, cc.Player.Uuid, cc.Player.Username)
protocol.WriteNewPacket(cc.ConnEncrypted, protocol.JoinGameID, int32(cc.Player.EntityId), uint8(1), byte(0), uint8(1), uint8(cc.Server.Size), "default")
protocol.WriteNewPacket(cc.ConnEncrypted, protocol.SpawnPositionID, int32(0), int32(128), int32(0))
protocol.WriteNewPacket(cc.ConnEncrypted, protocol.PlayerAbilitiesID, byte(1), float32(0.05), float32(0.1))
protocol.WriteNewPacket(cc.ConnEncrypted, protocol.PlayerPositionAndLookID, cc.Player.X, cc.Player.HeadY, cc.Player.Z, cc.Player.Yaw, cc.Player.Pitch, cc.Player.OnGround)
go cc.Server.DrainPlayerConnections(cc)
cc.HandleEncryptedConnection()
}
func (cc *GameConnection) HandleAuth() {
defer func() {
delete(cc.Server.Clients, cc)
cc.Conn.Close()
}()
remoteAddr := cc.Conn.RemoteAddr().String()
state := 0
verifyToken := make([]byte, 0)
for {
cc.Conn.SetReadDeadline(time.Now().Add(time.Second * 10))
id, buf, err := protocol.ReadPacket(cc.Conn)
if err != nil {
err2, ok := err.(net.Error)
if ok && err2.Timeout() {
log.Printf("Timeout handling connection (%s): %s", remoteAddr, err2.Error())
}
return
} else {
switch id {
case 0x00: // Handshake, Status Request, Login start
if state == 1 {
log.Printf("Server pinged from: %s", remoteAddr)
protocol.WriteNewPacket(cc.Conn, protocol.StatusResponseID, cc.Server.GetMinecraftStatus())
} else if state == 2 {
cc.Player.Username, _ = protocol.ReadString(buf, 0)
log.Printf("Got connection from %s", cc.Player.Username)
defer log.Printf("Connection closed for %s", cc.Player.Username)
pubKey := cc.Server.keyPair.Serialize()
verifyToken = protocol.GenerateKey(16)
protocol.WriteNewPacket(cc.Conn, protocol.EncryptionRequestID, "", int16(len(pubKey)), pubKey, int16(len(verifyToken)), verifyToken)
} else {
_, n := protocol.ReadVarint(buf, 0) // version
_, n = protocol.ReadString(buf, n) // address
_, n = protocol.ReadShort(buf, n) // port
nextstate, n := protocol.ReadVarint(buf, n)
state = int(nextstate)
}
case 0x01: // Encryption Response, Ping Request
if state == 2 {
secretLen, n := protocol.ReadShort(buf, 0)
secretEncrypted, n := protocol.ReadBytes(buf, n, secretLen)
tokenLen, n := protocol.ReadShort(buf, n)
tokenEncrypted, n := protocol.ReadBytes(buf, n, tokenLen)
verifyToken2, err := protocol.DecryptRSABytes(tokenEncrypted, cc.Server.keyPair)
if err != nil {
log.Printf("Error decrypting RSA token: %s", err.Error())
return
} else if !bytes.Equal(verifyToken, verifyToken2) {
log.Printf("Error: verification token did not match!")
return
}
sharedSecret, err := protocol.DecryptRSABytes(secretEncrypted, cc.Server.keyPair)
if err != nil {
log.Printf("Error decrypting RSA secret: %s", err.Error())
return
}
cc.ConnEncrypted, err = protocol.NewAESConn(cc.Conn, sharedSecret)
if err != nil {
log.Printf("Error creating AES connection: %s", err.Error())
}
cc.Player.Uuid, err = protocol.CheckAuth(cc.Player.Username, "", cc.Server.keyPair, sharedSecret)
if err != nil {
log.Printf("Failed to verify username %s: %s", cc.Player.Username, err)
protocol.WriteNewPacket(cc.ConnEncrypted, protocol.PreAuthKickID, protocol.CreateJsonMessage("Failed to verify username!", ""))
return
}
// protocol.WriteNewPacket(cc.ConnEncrypted, protocol.PreAuthKickID, protocol.CreateJsonMessage("Server will bbl", "blue"))
cc.HandleNewConnection()
return
} else {
time, _ := protocol.ReadLong(buf, 0)
//fmt.Printf("Ping: %d\n", time)
protocol.WriteNewPacket(cc.Conn, protocol.PingResponseID, time)
return
}
default:
log.Printf("Unknown Packet (state:%d): 0x%X : %s", state, id, hex.Dump(buf))
return
}
}
}
}