void IOLoop()
{
byte[] loginPacket = CreateLoginPacket(migratedUsername ?? _username, _ver);
ServerSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try {
if(EndPoint.Port > IPEndPoint.MaxPort || EndPoint.Port < IPEndPoint.MinPort) throw new SocketException(-1);
//Do not continue if the user attempts to connect on a port larger than possible.
ServerSocket.Connect(EndPoint);
ServerSocket.Send(loginPacket);
} catch( SocketException ex ) {
Log( LogType.Error, HandleSocketError( ex.ErrorCode ), ex.ToString() );
return;
}
BinaryReader reader = new BinaryReader(new NetworkStream(ServerSocket));
while (true)
{
try
{
byte OpCode = reader.ReadByte();
PacketEventArgs opcodeEvent = new PacketEventArgs((ServerPackets)OpCode);
Events.RaisePacketReceived(opcodeEvent);
switch ((ServerPackets)OpCode)
{
case ServerPackets.ServerIdentification://0x00
{
ProtocolVersion = reader.ReadByte(); // Protocol version should be seven.
string Name = Encoding.ASCII.GetString(reader.ReadBytes(64)).Trim();
string MOTD = Encoding.ASCII.GetString(reader.ReadBytes(64)).Trim();
if(!serverLoaded)
{
ServerName = Name;
ServerMOTD = MOTD;
serverLoaded = true;
}
UserType = reader.ReadByte();//Get the type. 0x64 = Op, 0x00 = Normal user.
}
break;
case ServerPackets.Ping://0x01
break; // Server only requires we read the packet ID.
case ServerPackets.LevelInitialize://0x02
Players.Clear();
if(_savemap) mapStream = new MemoryStream();
CanReconnectAfterKick = true;
break;
case ServerPackets.LevelDataChunk://0x03
{
int chunkLength = IPAddress.HostToNetworkOrder(reader.ReadInt16()); // Length of non padded data.
byte[] chunkData = reader.ReadBytes(1024); // May be padded with extra data.
byte progress = reader.ReadByte();
if(_savemap) {
mapStream.Write( chunkData, 0, chunkLength );
}
MapProgressEventArgs e = new MapProgressEventArgs(progress);
Events.RaiseMapProgress(e);
}
break;
case ServerPackets.LevelFinalize://0x04:
{
MapSizeX = IPAddress.HostToNetworkOrder(reader.ReadInt16());
MapSizeZ = IPAddress.HostToNetworkOrder(reader.ReadInt16());
MapSizeY = IPAddress.HostToNetworkOrder(reader.ReadInt16());
Connected = true; //At this state, we've loaded the map and we're ready to send chat etc.
if(_savemap) {
Log( LogType.BotActivity, "Beginning to save map.." );
mapStream.Seek(0, SeekOrigin.Begin);
Map map = new Map(MapSizeX, MapSizeY, MapSizeZ);
using (GZipStream decompressed = new GZipStream( mapStream,CompressionMode.Decompress ) ) {
decompressed.Read( new byte[4], 0, 4 ); //Ignore size of stream.
int sizeX = MapSizeX, sizeY = MapSizeY, sizeZ = MapSizeZ;
for( int z = 0; z < sizeZ; z++ ) {
for( int y = 0; y < sizeY; y++ ) {
for( int x = 0; x < sizeX; x++ ) {
byte next = (byte)decompressed.ReadByte();
map.SetBlock( x, y, z, next );
}
}
}
}
mapStream.Dispose();
map.Save("map_" + DateTime.Now.ToString("ddHHmmssfffffff")); //Formatting for DateTime.
map.Dispose();
Log( LogType.BotActivity, "Saved map" );
}
MapLoadedEventArgs e = new MapLoadedEventArgs();
Events.RaiseMapLoaded(e);
}
break;
case ServerPackets.SetBlock://0x06:
{
int blockX = IPAddress.HostToNetworkOrder(reader.ReadInt16());
int blockZ = IPAddress.HostToNetworkOrder(reader.ReadInt16());
int blockY = IPAddress.HostToNetworkOrder(reader.ReadInt16());
byte blockType = reader.ReadByte();
BlockPlacedEventArgs e = new BlockPlacedEventArgs(blockX, blockY, blockZ, blockType);
Events.RaiseBlockPlaced(e);
if(marksLeft > 0 && blockType == 39 && CubID != null)
{
byte id = CubID.Value;
if(Players[id].X < 0 || Players[id].Y < 0 || Players[id].Z < 0) {
SendMessagePacket("Error: You are too far away from the bot.");
break;
}
if(new Vector3I(blockX, blockY, blockZ).DistanceTo(new Vector3I(
(int)Players[id].X, (int)Players[id].Y, (int)Players[id].Z)) > 11) {
break; //Another player probably tried placing a block somewhere else.
}
marks[marks.Length - marksLeft] = new Vector3I(blockX, blockY, blockZ);
marksLeft--; //Go from smallest to largest.
if(marksLeft == 0 && QueuedDrawer != null) {
Draw(QueuedDrawer, marks, cuboidType);
}
}
}
break;
case ServerPackets.SpawnPlayer://0x07:
{
byte pID = reader.ReadByte();
string playername = Encoding.ASCII.GetString(reader.ReadBytes(64)).Trim();
Players[pID] = new Player();
Players[pID].Name = playername;
Players[pID].X = IPAddress.HostToNetworkOrder(reader.ReadInt16()) / 32f;
Players[pID].Z = IPAddress.HostToNetworkOrder(reader.ReadInt16()) / 32f;
Players[pID].Y = IPAddress.HostToNetworkOrder(reader.ReadInt16()) / 32f;
Players[pID].Yaw = reader.ReadByte();
Players[pID].Pitch = reader.ReadByte();
PositionEventArgs e = new PositionEventArgs(pID, Players[pID]);
Events.RaisePlayerMoved(e);
}
break;
case ServerPackets.PlayerTeleport://0x08
{
byte pID = reader.ReadByte();
Players[pID].X = IPAddress.HostToNetworkOrder(reader.ReadInt16()) / 32f;
Players[pID].Z = IPAddress.HostToNetworkOrder(reader.ReadInt16()) / 32f;
Players[pID].Y = IPAddress.HostToNetworkOrder(reader.ReadInt16()) / 32f;
Players[pID].Yaw = reader.ReadByte();
Players[pID].Pitch = reader.ReadByte();
PositionEventArgs e = new PositionEventArgs(pID, Players[pID]);
Events.RaisePlayerMoved(e);
}
break;
case ServerPackets.PositionandOrientationUpdate://0x09
{
byte pID = reader.ReadByte();
Players[pID].X += reader.ReadSByte() / 32f;
Players[pID].Z += reader.ReadSByte() / 32f;
Players[pID].Y += reader.ReadSByte() / 32f;
Players[pID].Yaw = reader.ReadByte();
Players[pID].Pitch = reader.ReadByte();
PositionEventArgs e = new PositionEventArgs(pID, Players[pID]);
Events.RaisePlayerMoved(e);
}
break;
case ServerPackets.PositionUpdate://0x0a
{
byte pID = reader.ReadByte();
Players[pID].X += (reader.ReadSByte() / 32f);
Players[pID].Z += (reader.ReadSByte() / 32f);
Players[pID].Y += (reader.ReadSByte() / 32f);
PositionEventArgs e = new PositionEventArgs(pID, Players[pID]);
Events.RaisePlayerMoved(e);
}
break;
case ServerPackets.OrientationUpdate://0x0b
{
byte pID = reader.ReadByte();
Players[pID].Yaw = reader.ReadByte();
Players[pID].Pitch = reader.ReadByte();
PositionEventArgs e = new PositionEventArgs(pID, Players[pID]);
Events.RaisePlayerMoved(e);
}
break;
case ServerPackets.DespawnPlayer://0x0c
{
byte playerID = reader.ReadByte();
Players.Remove(playerID); // Also sent when the player joins another map.
}
break;
case ServerPackets.Message://0x0d
{
reader.ReadByte(); // Most servers don't send the ID.
string Line = Encoding.ASCII.GetString(reader.ReadBytes(64)).Trim();
MessageEventArgs e = new MessageEventArgs(Line); //Raise the event, let the event handler take care of splitting.
Events.RaiseChatMessage(e);
Log( LogType.Chat, Line );
if (Line.Contains(_delimiter.ToString())) { //Most servers use : as the delimiter.
string[] lineSplit = Line.Split(new char[] { _delimiter }, 2);
string Message = Extensions.StripColors(lineSplit[1]).TrimStart(' ');
string User = Extensions.StripColors(lineSplit[0]);
if (!IgnoredUserList.Contains(User)) {
string strippedcommandheader = Message.Split(' ')[0].ToLower();
foreach(KeyValuePair<string,CommandDelegate> command in RegisteredCommands)
{
if(strippedcommandheader == "." + command.Key.ToLower()) {
if(_requiresop) {
if(Users.Contains(User)) {
EnqueueCommand(command.Value,Line);
break;
} else {
SendMessagePacket(User +", you are not allowed to use the bot.");
}
} else {
EnqueueCommand(command.Value,Line);
break;
}
}
}
}
}
ProcessCommandQueue();
}
break;
case ServerPackets.DisconnectSelf://0x0e
{
string reason = Encoding.ASCII.GetString(reader.ReadBytes(64)).Trim();
KickedEventArgs e = new KickedEventArgs(reason, CanReconnectAfterKick);
Events.RaiseGotKicked(e);
if( _reconnectonkick == true && CanReconnectAfterKick == true ) {
Log( LogType.BotActivity, "Kicked from the server. Reconnecting.", reason );
CanReconnectAfterKick = false;
Thread thread = new Thread(IOLoop);
thread.Name = "LibClassicBotIO";
thread.IsBackground = true;
thread.Start();
} else if(_reconnectonkick == false) {
Log( LogType.Warning, "Kicked from the server. Not attempting to reconnect.", reason );
} else {
ServerSocket.Close();
Log( LogType.Error, "The bot was prevented from reconnecting.", "(Kick packet received before a LevelBegin packet.)" );
}
return;
}
case ServerPackets.SetPermission://0x0f
UserType = reader.ReadByte();//Issued in Vanilla when someone calls /op, used in fCraft for bedrock permission checking.
break;
default:
throw new IOException("Unrecognised packet. Opcode: " + OpCode.ToString());
}
} catch ( IOException ex ) {
if( _reconnectonkick == true && CanReconnectAfterKick == true ) {
CancelDrawer();
CanReconnectAfterKick = false;
Thread thread = new Thread(IOLoop);
thread.Name = "LibClassicBotIO";
thread.IsBackground = true;
thread.Start();
} else {
Log( LogType.Error, "An I/O error has occured. The connection have been closed uncleanly. Exiting the bot.", ex.ToString() );
}
return;
}
}
}
/// <summary>Raises a new PacketReceived Event.</summary>
internal void RaisePacketReceived(PacketEventArgs e)
{
if (PacketReceived != null) PacketReceived(null, e);
}
