using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net.Sockets; using System.Threading; using MinecraftClient.Crypto; using MinecraftClient.Proxy; using System.Security.Cryptography; using MinecraftClient.Mapping; using MinecraftClient.Mapping.BlockPalettes; using MinecraftClient.Mapping.EntityPalettes; using MinecraftClient.Protocol.Handlers.Forge; using MinecraftClient.Inventory; using System.Windows.Forms; using System.Data.SqlClient; using System.Diagnostics; using MinecraftClient.Inventory.ItemPalettes; using MinecraftClient.Protocol.Handlers.PacketPalettes; namespace MinecraftClient.Protocol.Handlers { /// /// Implementation for Minecraft 1.7.X+ Protocols /// /// /// Typical update steps for implementing protocol changes for a new Minecraft version: /// - Perform a diff between latest supported version in MCC and new stable version to support on https://wiki.vg/Protocol /// - If there are any changes in packets implemented by MCC, add MCXXXVersion field below and implement new packet layouts /// - Add the packet type palette for that Minecraft version. Please see PacketTypePalette.cs for more information /// - Also see Material.cs and ItemType.cs for updating block and item data inside MCC /// class Protocol18Handler : IMinecraftCom { internal const int MC18Version = 47; internal const int MC19Version = 107; internal const int MC191Version = 108; internal const int MC110Version = 210; internal const int MC1112Version = 316; internal const int MC112Version = 335; internal const int MC1122Version = 340; internal const int MC113Version = 393; internal const int MC114Version = 477; internal const int MC115Version = 573; internal const int MC1152Version = 578; internal const int MC116Version = 735; internal const int MC1161Version = 736; internal const int MC1162Version = 751; internal const int MC1163Version = 753; internal const int MC1164Version = 754; private int compression_treshold = 0; private bool autocomplete_received = false; private int autocomplete_transaction_id = 0; private readonly List autocomplete_result = new List(); private readonly Dictionary window_actions = new Dictionary(); private bool login_phase = true; private int protocolversion; private int currentDimension; Protocol18Forge pForge; Protocol18Terrain pTerrain; IMinecraftComHandler handler; EntityPalette entityPalette; ItemPalette itemPalette; PacketTypePalette packetPalette; SocketWrapper socketWrapper; DataTypes dataTypes; Thread netRead; public Protocol18Handler(TcpClient Client, int protocolVersion, IMinecraftComHandler handler, ForgeInfo forgeInfo) { ConsoleIO.SetAutoCompleteEngine(this); ChatParser.InitTranslations(); this.socketWrapper = new SocketWrapper(Client); this.dataTypes = new DataTypes(protocolVersion); this.protocolversion = protocolVersion; this.handler = handler; this.pForge = new Protocol18Forge(forgeInfo, protocolVersion, dataTypes, this, handler); this.pTerrain = new Protocol18Terrain(protocolVersion, dataTypes, handler); this.packetPalette = new PacketTypeHandler(protocolVersion).GetTypeHandler(); if (handler.GetTerrainEnabled() && protocolversion > MC1152Version) { Translations.WriteLineFormatted("extra.terrainandmovement_disabled"); handler.SetTerrainEnabled(false); } if (handler.GetInventoryEnabled() && (protocolversion < MC110Version || protocolversion > MC1164Version)) { Translations.WriteLineFormatted("extra.inventory_disabled"); handler.SetInventoryEnabled(false); } if (handler.GetEntityHandlingEnabled() && (protocolversion < MC110Version || protocolversion > MC1164Version)) { Translations.WriteLineFormatted("extra.entity_disabled"); handler.SetEntityHandlingEnabled(false); } // Block palette if (protocolversion >= MC113Version) { if (protocolVersion > MC1152Version && handler.GetTerrainEnabled()) throw new NotImplementedException(Translations.Get("exception.palette.block")); if (protocolVersion >= MC115Version) Block.Palette = new Palette115(); else if (protocolVersion >= MC114Version) Block.Palette = new Palette114(); else Block.Palette = new Palette113(); } else Block.Palette = new Palette112(); // Entity palette if (protocolversion >= MC113Version) { if (protocolversion > MC1164Version && handler.GetEntityHandlingEnabled()) throw new NotImplementedException(Translations.Get("exception.palette.entity")); if (protocolversion >= MC1162Version) entityPalette = new EntityPalette1162(); else if (protocolversion >= MC116Version) entityPalette = new EntityPalette1161(); else if (protocolversion >= MC115Version) entityPalette = new EntityPalette115(); else if (protocolVersion >= MC114Version) entityPalette = new EntityPalette114(); else entityPalette = new EntityPalette113(); } else entityPalette = new EntityPalette112(); // Item palette if (protocolversion >= MC116Version) { if (protocolversion > MC1164Version && handler.GetInventoryEnabled()) throw new NotImplementedException(Translations.Get("exception.palette.item")); if (protocolversion >= MC1162Version) itemPalette = new ItemPalette1162(); else itemPalette = new ItemPalette1161(); } else itemPalette = new ItemPalette115(); } /// /// Separate thread. Network reading loop. /// private void Updater() { try { do { Thread.Sleep(100); } while (Update()); } catch (System.IO.IOException) { } catch (SocketException) { } catch (ObjectDisposedException) { } handler.OnConnectionLost(ChatBot.DisconnectReason.ConnectionLost, ""); } /// /// Read data from the network. Should be called on a separate thread. /// /// FALSE if an error occured, TRUE otherwise. private bool Update() { handler.OnUpdate(); if (!socketWrapper.IsConnected()) return false; try { while (socketWrapper.HasDataAvailable()) { int packetID = 0; Queue packetData = new Queue(); ReadNextPacket(ref packetID, packetData); HandlePacket(packetID, new Queue(packetData)); } } catch (System.IO.IOException) { return false; } catch (SocketException) { return false; } catch (NullReferenceException) { return false; } return true; } /// /// Read the next packet from the network /// /// will contain packet ID /// will contain raw packet Data internal void ReadNextPacket(ref int packetID, Queue packetData) { packetData.Clear(); int size = dataTypes.ReadNextVarIntRAW(socketWrapper); //Packet size byte[] rawpacket = socketWrapper.ReadDataRAW(size); //Packet contents for (int i = 0; i < rawpacket.Length; i++) packetData.Enqueue(rawpacket[i]); //Handle packet decompression if (protocolversion >= MC18Version && compression_treshold > 0) { int sizeUncompressed = dataTypes.ReadNextVarInt(packetData); if (sizeUncompressed != 0) // != 0 means compressed, let's decompress { byte[] toDecompress = packetData.ToArray(); byte[] uncompressed = ZlibUtils.Decompress(toDecompress, sizeUncompressed); packetData.Clear(); for (int i = 0; i < uncompressed.Length; i++) packetData.Enqueue(uncompressed[i]); } } packetID = dataTypes.ReadNextVarInt(packetData); //Packet ID if (handler.GetNetworkPacketCaptureEnabled()) { List clone = packetData.ToList(); handler.OnNetworkPacket(packetID, clone, login_phase, true); } } /// /// Handle the given packet /// /// Packet ID /// Packet contents /// TRUE if the packet was processed, FALSE if ignored or unknown internal bool HandlePacket(int packetID, Queue packetData) { try { if (login_phase) { switch (packetID) //Packet IDs are different while logging in { case 0x03: if (protocolversion >= MC18Version) compression_treshold = dataTypes.ReadNextVarInt(packetData); break; case 0x04: int messageId = dataTypes.ReadNextVarInt(packetData); string channel = dataTypes.ReadNextString(packetData); List responseData = new List(); bool understood = pForge.HandleLoginPluginRequest(channel, packetData, ref responseData); SendLoginPluginResponse(messageId, understood, responseData.ToArray()); return understood; default: return false; //Ignored packet } } // Regular in-game packets else switch (packetPalette.GetIncommingTypeById(packetID)) { case PacketTypesIn.KeepAlive: SendPacket(PacketTypesOut.KeepAlive, packetData); handler.OnServerKeepAlive(); break; case PacketTypesIn.JoinGame: handler.OnGameJoined(); int playerEntityID = dataTypes.ReadNextInt(packetData); handler.OnReceivePlayerEntityID(playerEntityID); if (protocolversion >= MC1162Version) dataTypes.ReadNextBool(packetData); // Is hardcore - 1.16.2 and above handler.OnGamemodeUpdate(Guid.Empty, dataTypes.ReadNextByte(packetData)); if (protocolversion >= MC116Version) { dataTypes.ReadNextByte(packetData); // Previous Gamemode - 1.16 and above int worldCount = dataTypes.ReadNextVarInt(packetData); // World Count - 1.16 and above for (int i = 0; i < worldCount; i++) dataTypes.ReadNextString(packetData); // World Names - 1.16 and above dataTypes.ReadNextNbt(packetData); // Dimension Codec - 1.16 and above } //Current dimension - String identifier in 1.16, varInt below 1.16, byte below 1.9.1 if (protocolversion >= MC116Version) { if (protocolversion >= MC1162Version) dataTypes.ReadNextNbt(packetData); else dataTypes.ReadNextString(packetData); // TODO handle dimensions for 1.16+, needed for terrain handling this.currentDimension = 0; } else if (protocolversion >= MC191Version) this.currentDimension = dataTypes.ReadNextInt(packetData); else this.currentDimension = (sbyte)dataTypes.ReadNextByte(packetData); if (protocolversion < MC114Version) dataTypes.ReadNextByte(packetData); // Difficulty - 1.13 and below if (protocolversion >= MC116Version) dataTypes.ReadNextString(packetData); // World Name - 1.16 and above if (protocolversion >= MC115Version) dataTypes.ReadNextLong(packetData); // Hashed world seed - 1.15 and above if (protocolversion >= MC1162Version) dataTypes.ReadNextVarInt(packetData); // Max Players - 1.16.2 and above else dataTypes.ReadNextByte(packetData); // Max Players - 1.16.1 and below if (protocolversion < MC116Version) dataTypes.ReadNextString(packetData); // Level Type - 1.15 and below if (protocolversion >= MC114Version) dataTypes.ReadNextVarInt(packetData); // View distance - 1.14 and above if (protocolversion >= MC18Version) dataTypes.ReadNextBool(packetData); // Reduced debug info - 1.8 and above if (protocolversion >= MC115Version) dataTypes.ReadNextBool(packetData); // Enable respawn screen - 1.15 and above if (protocolversion >= MC116Version) { dataTypes.ReadNextBool(packetData); // Is Debug - 1.16 and above dataTypes.ReadNextBool(packetData); // Is Flat - 1.16 and above } break; case PacketTypesIn.ChatMessage: string message = dataTypes.ReadNextString(packetData); if (protocolversion >= MC18Version) { //Hide system messages or xp bar messages? byte messageType = dataTypes.ReadNextByte(packetData); if ((messageType == 1 && !Settings.DisplaySystemMessages) || (messageType == 2 && !Settings.DisplayXPBarMessages)) break; } handler.OnTextReceived(message, true); break; case PacketTypesIn.Respawn: if (protocolversion >= MC116Version) { // TODO handle dimensions for 1.16+, needed for terrain handling dataTypes.ReadNextString(packetData); this.currentDimension = 0; } else { // 1.15 and below this.currentDimension = dataTypes.ReadNextInt(packetData); } if (protocolversion >= MC116Version) dataTypes.ReadNextString(packetData); // World Name - 1.16 and above if (protocolversion < MC114Version) dataTypes.ReadNextByte(packetData); // Difficulty - 1.13 and below if (protocolversion >= MC115Version) dataTypes.ReadNextLong(packetData); // Hashed world seed - 1.15 and above dataTypes.ReadNextByte(packetData); // Gamemode if (protocolversion >= MC116Version) dataTypes.ReadNextByte(packetData); // Previous Game mode - 1.16 and above if (protocolversion < MC116Version) dataTypes.ReadNextString(packetData); // Level Type - 1.15 and below if (protocolversion >= MC116Version) { dataTypes.ReadNextBool(packetData); // Is Debug - 1.16 and above dataTypes.ReadNextBool(packetData); // Is Flat - 1.16 and above dataTypes.ReadNextBool(packetData); // Copy metadata - 1.16 and above } handler.OnRespawn(); break; case PacketTypesIn.PlayerPositionAndLook: // These always need to be read, since we need the field after them for teleport confirm double x = dataTypes.ReadNextDouble(packetData); double y = dataTypes.ReadNextDouble(packetData); double z = dataTypes.ReadNextDouble(packetData); float yaw = dataTypes.ReadNextFloat(packetData); float pitch = dataTypes.ReadNextFloat(packetData); byte locMask = dataTypes.ReadNextByte(packetData); // entity handling require player pos for distance calculating if (handler.GetTerrainEnabled() || handler.GetEntityHandlingEnabled()) { if (protocolversion >= MC18Version) { Location location = handler.GetCurrentLocation(); location.X = (locMask & 1 << 0) != 0 ? location.X + x : x; location.Y = (locMask & 1 << 1) != 0 ? location.Y + y : y; location.Z = (locMask & 1 << 2) != 0 ? location.Z + z : z; handler.UpdateLocation(location, yaw, pitch); } else handler.UpdateLocation(new Location(x, y, z), yaw, pitch); } if (protocolversion >= MC19Version) { int teleportID = dataTypes.ReadNextVarInt(packetData); // Teleport confirm packet SendPacket(PacketTypesOut.TeleportConfirm, dataTypes.GetVarInt(teleportID)); } break; case PacketTypesIn.ChunkData: if (handler.GetTerrainEnabled()) { int chunkX = dataTypes.ReadNextInt(packetData); int chunkZ = dataTypes.ReadNextInt(packetData); bool chunksContinuous = dataTypes.ReadNextBool(packetData); ushort chunkMask = protocolversion >= MC19Version ? (ushort)dataTypes.ReadNextVarInt(packetData) : dataTypes.ReadNextUShort(packetData); if (protocolversion < MC18Version) { ushort addBitmap = dataTypes.ReadNextUShort(packetData); int compressedDataSize = dataTypes.ReadNextInt(packetData); byte[] compressed = dataTypes.ReadData(compressedDataSize, packetData); byte[] decompressed = ZlibUtils.Decompress(compressed); pTerrain.ProcessChunkColumnData(chunkX, chunkZ, chunkMask, addBitmap, currentDimension == 0, chunksContinuous, currentDimension, new Queue(decompressed)); } else { if (protocolversion >= MC114Version) dataTypes.ReadNextNbt(packetData); // Heightmaps - 1.14 and above if (protocolversion >= MC115Version && chunksContinuous) dataTypes.ReadData(1024 * 4, packetData); // Biomes - 1.15 and above int dataSize = dataTypes.ReadNextVarInt(packetData); pTerrain.ProcessChunkColumnData(chunkX, chunkZ, chunkMask, 0, false, chunksContinuous, currentDimension, packetData); } } break; case PacketTypesIn.MapData: int mapid = dataTypes.ReadNextVarInt(packetData); byte scale = dataTypes.ReadNextByte(packetData); bool trackingposition = dataTypes.ReadNextBool(packetData); bool locked = false; if (protocolversion >= MC114Version) { locked = dataTypes.ReadNextBool(packetData); } int iconcount = dataTypes.ReadNextVarInt(packetData); handler.OnMapData(mapid, scale, trackingposition, locked, iconcount); break; case PacketTypesIn.Title: if (protocolversion >= MC18Version) { int action2 = dataTypes.ReadNextVarInt(packetData); string titletext = String.Empty; string subtitletext = String.Empty; string actionbartext = String.Empty; string json = String.Empty; int fadein = -1; int stay = -1; int fadeout = -1; if (protocolversion >= MC110Version) { if (action2 == 0) { json = titletext; titletext = ChatParser.ParseText(dataTypes.ReadNextString(packetData)); } else if (action2 == 1) { json = subtitletext; subtitletext = ChatParser.ParseText(dataTypes.ReadNextString(packetData)); } else if (action2 == 2) { json = actionbartext; actionbartext = ChatParser.ParseText(dataTypes.ReadNextString(packetData)); } else if (action2 == 3) { fadein = dataTypes.ReadNextInt(packetData); stay = dataTypes.ReadNextInt(packetData); fadeout = dataTypes.ReadNextInt(packetData); } } else { if (action2 == 0) { json = titletext; titletext = ChatParser.ParseText(dataTypes.ReadNextString(packetData)); } else if (action2 == 1) { json = subtitletext; subtitletext = ChatParser.ParseText(dataTypes.ReadNextString(packetData)); } else if (action2 == 2) { fadein = dataTypes.ReadNextInt(packetData); stay = dataTypes.ReadNextInt(packetData); fadeout = dataTypes.ReadNextInt(packetData); } } handler.OnTitle(action2, titletext, subtitletext, actionbartext, fadein, stay, fadeout, json); } break; case PacketTypesIn.MultiBlockChange: if (handler.GetTerrainEnabled()) { int chunkX = dataTypes.ReadNextInt(packetData); int chunkZ = dataTypes.ReadNextInt(packetData); int recordCount = protocolversion < MC18Version ? (int)dataTypes.ReadNextShort(packetData) : dataTypes.ReadNextVarInt(packetData); for (int i = 0; i < recordCount; i++) { byte locationXZ; ushort blockIdMeta; int blockY; if (protocolversion < MC18Version) { blockIdMeta = dataTypes.ReadNextUShort(packetData); blockY = (ushort)dataTypes.ReadNextByte(packetData); locationXZ = dataTypes.ReadNextByte(packetData); } else { locationXZ = dataTypes.ReadNextByte(packetData); blockY = (ushort)dataTypes.ReadNextByte(packetData); blockIdMeta = (ushort)dataTypes.ReadNextVarInt(packetData); } int blockX = locationXZ >> 4; int blockZ = locationXZ & 0x0F; Block block = new Block(blockIdMeta); handler.GetWorld().SetBlock(new Location(chunkX, chunkZ, blockX, blockY, blockZ), block); } } break; case PacketTypesIn.BlockChange: if (handler.GetTerrainEnabled()) { if (protocolversion < MC18Version) { int blockX = dataTypes.ReadNextInt(packetData); int blockY = dataTypes.ReadNextByte(packetData); int blockZ = dataTypes.ReadNextInt(packetData); short blockId = (short)dataTypes.ReadNextVarInt(packetData); byte blockMeta = dataTypes.ReadNextByte(packetData); handler.GetWorld().SetBlock(new Location(blockX, blockY, blockZ), new Block(blockId, blockMeta)); } else handler.GetWorld().SetBlock(dataTypes.ReadNextLocation(packetData), new Block((ushort)dataTypes.ReadNextVarInt(packetData))); } break; case PacketTypesIn.MapChunkBulk: if (protocolversion < MC19Version && handler.GetTerrainEnabled()) { int chunkCount; bool hasSkyLight; Queue chunkData = packetData; //Read global fields if (protocolversion < MC18Version) { chunkCount = dataTypes.ReadNextShort(packetData); int compressedDataSize = dataTypes.ReadNextInt(packetData); hasSkyLight = dataTypes.ReadNextBool(packetData); byte[] compressed = dataTypes.ReadData(compressedDataSize, packetData); byte[] decompressed = ZlibUtils.Decompress(compressed); chunkData = new Queue(decompressed); } else { hasSkyLight = dataTypes.ReadNextBool(packetData); chunkCount = dataTypes.ReadNextVarInt(packetData); } //Read chunk records int[] chunkXs = new int[chunkCount]; int[] chunkZs = new int[chunkCount]; ushort[] chunkMasks = new ushort[chunkCount]; ushort[] addBitmaps = new ushort[chunkCount]; for (int chunkColumnNo = 0; chunkColumnNo < chunkCount; chunkColumnNo++) { chunkXs[chunkColumnNo] = dataTypes.ReadNextInt(packetData); chunkZs[chunkColumnNo] = dataTypes.ReadNextInt(packetData); chunkMasks[chunkColumnNo] = dataTypes.ReadNextUShort(packetData); addBitmaps[chunkColumnNo] = protocolversion < MC18Version ? dataTypes.ReadNextUShort(packetData) : (ushort)0; } //Process chunk records for (int chunkColumnNo = 0; chunkColumnNo < chunkCount; chunkColumnNo++) pTerrain.ProcessChunkColumnData(chunkXs[chunkColumnNo], chunkZs[chunkColumnNo], chunkMasks[chunkColumnNo], addBitmaps[chunkColumnNo], hasSkyLight, true, currentDimension, chunkData); } break; case PacketTypesIn.UnloadChunk: if (protocolversion >= MC19Version && handler.GetTerrainEnabled()) { int chunkX = dataTypes.ReadNextInt(packetData); int chunkZ = dataTypes.ReadNextInt(packetData); handler.GetWorld()[chunkX, chunkZ] = null; } break; case PacketTypesIn.PlayerInfo: if (protocolversion >= MC18Version) { int action = dataTypes.ReadNextVarInt(packetData); int numActions = dataTypes.ReadNextVarInt(packetData); for (int i = 0; i < numActions; i++) { Guid uuid = dataTypes.ReadNextUUID(packetData); switch (action) { case 0x00: //Player Join string name = dataTypes.ReadNextString(packetData); int propNum = dataTypes.ReadNextVarInt(packetData); for (int p = 0; p < propNum; p++) { string key = dataTypes.ReadNextString(packetData); string val = dataTypes.ReadNextString(packetData); if (dataTypes.ReadNextBool(packetData)) dataTypes.ReadNextString(packetData); } handler.OnGamemodeUpdate(uuid, dataTypes.ReadNextVarInt(packetData)); dataTypes.ReadNextVarInt(packetData); if (dataTypes.ReadNextBool(packetData)) dataTypes.ReadNextString(packetData); handler.OnPlayerJoin(uuid, name); break; case 0x01: //Update gamemode handler.OnGamemodeUpdate(uuid, dataTypes.ReadNextVarInt(packetData)); break; case 0x02: //Update latency int latency = dataTypes.ReadNextVarInt(packetData); handler.OnLatencyUpdate(uuid, latency); //Update latency; break; case 0x03: //Update display name if (dataTypes.ReadNextBool(packetData)) dataTypes.ReadNextString(packetData); break; case 0x04: //Player Leave handler.OnPlayerLeave(uuid); break; default: //Unknown player list item type break; } } } else //MC 1.7.X does not provide UUID in tab-list updates { string name = dataTypes.ReadNextString(packetData); bool online = dataTypes.ReadNextBool(packetData); short ping = dataTypes.ReadNextShort(packetData); Guid FakeUUID = new Guid(MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(name)).Take(16).ToArray()); if (online) handler.OnPlayerJoin(FakeUUID, name); else handler.OnPlayerLeave(FakeUUID); } break; case PacketTypesIn.TabComplete: if (protocolversion >= MC113Version) { autocomplete_transaction_id = dataTypes.ReadNextVarInt(packetData); dataTypes.ReadNextVarInt(packetData); // Start of text to replace dataTypes.ReadNextVarInt(packetData); // Length of text to replace } int autocomplete_count = dataTypes.ReadNextVarInt(packetData); autocomplete_result.Clear(); for (int i = 0; i < autocomplete_count; i++) { autocomplete_result.Add(dataTypes.ReadNextString(packetData)); if (protocolversion >= MC113Version) { // Skip optional tooltip for each tab-complete result if (dataTypes.ReadNextBool(packetData)) dataTypes.ReadNextString(packetData); } } autocomplete_received = true; break; case PacketTypesIn.PluginMessage: String channel = dataTypes.ReadNextString(packetData); // Length is unneeded as the whole remaining packetData is the entire payload of the packet. if (protocolversion < MC18Version) pForge.ReadNextVarShort(packetData); handler.OnPluginChannelMessage(channel, packetData.ToArray()); return pForge.HandlePluginMessage(channel, packetData, ref currentDimension); case PacketTypesIn.Disconnect: handler.OnConnectionLost(ChatBot.DisconnectReason.InGameKick, ChatParser.ParseText(dataTypes.ReadNextString(packetData))); return false; case PacketTypesIn.SetCompression: if (protocolversion >= MC18Version && protocolversion < MC19Version) compression_treshold = dataTypes.ReadNextVarInt(packetData); break; case PacketTypesIn.OpenWindow: if (handler.GetInventoryEnabled()) { if (protocolversion < MC114Version) { // MC 1.13 or lower byte windowID = dataTypes.ReadNextByte(packetData); string type = dataTypes.ReadNextString(packetData).Replace("minecraft:", "").ToUpper(); ContainerTypeOld inventoryType = (ContainerTypeOld)Enum.Parse(typeof(ContainerTypeOld), type); string title = dataTypes.ReadNextString(packetData); byte slots = dataTypes.ReadNextByte(packetData); Container inventory = new Container(windowID, inventoryType, ChatParser.ParseText(title)); handler.OnInventoryOpen(windowID, inventory); } else { // MC 1.14 or greater int windowID = dataTypes.ReadNextVarInt(packetData); int windowType = dataTypes.ReadNextVarInt(packetData); string title = dataTypes.ReadNextString(packetData); Container inventory = new Container(windowID, windowType, ChatParser.ParseText(title)); handler.OnInventoryOpen(windowID, inventory); } } break; case PacketTypesIn.CloseWindow: if (handler.GetInventoryEnabled()) { byte windowID = dataTypes.ReadNextByte(packetData); lock (window_actions) { window_actions[windowID] = 0; } handler.OnInventoryClose(windowID); } break; case PacketTypesIn.WindowItems: if (handler.GetInventoryEnabled()) { byte windowId = dataTypes.ReadNextByte(packetData); short elements = dataTypes.ReadNextShort(packetData); Dictionary inventorySlots = new Dictionary(); for (short slotId = 0; slotId < elements; slotId++) { Item item = dataTypes.ReadNextItemSlot(packetData, itemPalette); if (item != null) inventorySlots[slotId] = item; } handler.OnWindowItems(windowId, inventorySlots); } break; case PacketTypesIn.SetSlot: if (handler.GetInventoryEnabled()) { byte windowID = dataTypes.ReadNextByte(packetData); short slotID = dataTypes.ReadNextShort(packetData); Item item = dataTypes.ReadNextItemSlot(packetData, itemPalette); handler.OnSetSlot(windowID, slotID, item); } break; case PacketTypesIn.WindowConfirmation: if (handler.GetInventoryEnabled()) { byte windowID = dataTypes.ReadNextByte(packetData); short actionID = dataTypes.ReadNextShort(packetData); bool accepted = dataTypes.ReadNextBool(packetData); if (!accepted) { SendWindowConfirmation(windowID, actionID, accepted); } } break; case PacketTypesIn.ResourcePackSend: string url = dataTypes.ReadNextString(packetData); string hash = dataTypes.ReadNextString(packetData); // Some server plugins may send invalid resource packs to probe the client and we need to ignore them (issue #1056) if (hash.Length != 40) break; //Send back "accepted" and "successfully loaded" responses for plugins making use of resource pack mandatory byte[] responseHeader = new byte[0]; if (protocolversion < MC110Version) //MC 1.10 does not include resource pack hash in responses responseHeader = dataTypes.ConcatBytes(dataTypes.GetVarInt(hash.Length), Encoding.UTF8.GetBytes(hash)); SendPacket(PacketTypesOut.ResourcePackStatus, dataTypes.ConcatBytes(responseHeader, dataTypes.GetVarInt(3))); //Accepted pack SendPacket(PacketTypesOut.ResourcePackStatus, dataTypes.ConcatBytes(responseHeader, dataTypes.GetVarInt(0))); //Successfully loaded break; case PacketTypesIn.SpawnEntity: if (handler.GetEntityHandlingEnabled()) { Entity entity = dataTypes.ReadNextEntity(packetData, entityPalette, false); handler.OnSpawnEntity(entity); } break; case PacketTypesIn.EntityEquipment: if (handler.GetEntityHandlingEnabled()) { int entityid = dataTypes.ReadNextVarInt(packetData); if (protocolversion >= MC116Version) { bool hasNext; do { byte bitsData = dataTypes.ReadNextByte(packetData); // Top bit set if another entry follows, and otherwise unset if this is the last item in the array hasNext = (bitsData >> 7) == 1 ? true : false; int slot2 = bitsData >> 1; Item item = dataTypes.ReadNextItemSlot(packetData, itemPalette); handler.OnEntityEquipment(entityid, slot2, item); } while (hasNext); } else { int slot2 = dataTypes.ReadNextVarInt(packetData); Item item = dataTypes.ReadNextItemSlot(packetData, itemPalette); handler.OnEntityEquipment(entityid, slot2, item); } } break; case PacketTypesIn.SpawnLivingEntity: if (handler.GetEntityHandlingEnabled()) { Entity entity = dataTypes.ReadNextEntity(packetData, entityPalette, true); // packet before 1.15 has metadata at the end // this is not handled in dataTypes.ReadNextEntity() // we are simply ignoring leftover data in packet handler.OnSpawnEntity(entity); } break; case PacketTypesIn.SpawnPlayer: if (handler.GetEntityHandlingEnabled()) { int EntityID = dataTypes.ReadNextVarInt(packetData); Guid UUID = dataTypes.ReadNextUUID(packetData); double X = dataTypes.ReadNextDouble(packetData); double Y = dataTypes.ReadNextDouble(packetData); double Z = dataTypes.ReadNextDouble(packetData); byte Yaw = dataTypes.ReadNextByte(packetData); byte Pitch = dataTypes.ReadNextByte(packetData); Location EntityLocation = new Location(X, Y, Z); handler.OnSpawnPlayer(EntityID, UUID, EntityLocation, Yaw, Pitch); } break; case PacketTypesIn.EntityEffect: if (handler.GetEntityHandlingEnabled()) { int entityid = dataTypes.ReadNextVarInt(packetData); Inventory.Effects effect = Effects.Speed; if (Enum.TryParse(dataTypes.ReadNextByte(packetData).ToString(), out effect)) { int amplifier = dataTypes.ReadNextByte(packetData); int duration = dataTypes.ReadNextVarInt(packetData); byte flags = dataTypes.ReadNextByte(packetData); handler.OnEntityEffect(entityid, effect, amplifier, duration, flags); } } break; case PacketTypesIn.DestroyEntities: if (handler.GetEntityHandlingEnabled()) { int EntityCount = dataTypes.ReadNextVarInt(packetData); int[] EntitiesList = new int[EntityCount]; for (int i = 0; i < EntityCount; i++) { EntitiesList[i] = dataTypes.ReadNextVarInt(packetData); } handler.OnDestroyEntities(EntitiesList); } break; case PacketTypesIn.EntityPosition: if (handler.GetEntityHandlingEnabled()) { int EntityID = dataTypes.ReadNextVarInt(packetData); Double DeltaX = Convert.ToDouble(dataTypes.ReadNextShort(packetData)); Double DeltaY = Convert.ToDouble(dataTypes.ReadNextShort(packetData)); Double DeltaZ = Convert.ToDouble(dataTypes.ReadNextShort(packetData)); bool OnGround = dataTypes.ReadNextBool(packetData); DeltaX = DeltaX / (128 * 32); DeltaY = DeltaY / (128 * 32); DeltaZ = DeltaZ / (128 * 32); handler.OnEntityPosition(EntityID, DeltaX, DeltaY, DeltaZ, OnGround); } break; case PacketTypesIn.EntityPositionAndRotation: if (handler.GetEntityHandlingEnabled()) { int EntityID = dataTypes.ReadNextVarInt(packetData); Double DeltaX = Convert.ToDouble(dataTypes.ReadNextShort(packetData)); Double DeltaY = Convert.ToDouble(dataTypes.ReadNextShort(packetData)); Double DeltaZ = Convert.ToDouble(dataTypes.ReadNextShort(packetData)); byte _yaw = dataTypes.ReadNextByte(packetData); byte _pitch = dataTypes.ReadNextByte(packetData); bool OnGround = dataTypes.ReadNextBool(packetData); DeltaX = DeltaX / (128 * 32); DeltaY = DeltaY / (128 * 32); DeltaZ = DeltaZ / (128 * 32); handler.OnEntityPosition(EntityID, DeltaX, DeltaY, DeltaZ, OnGround); } break; case PacketTypesIn.EntityProperties: if (handler.GetEntityHandlingEnabled()) { int EntityID = dataTypes.ReadNextVarInt(packetData); int NumberOfProperties = dataTypes.ReadNextInt(packetData); Dictionary keys = new Dictionary(); for (int i = 0; i < NumberOfProperties; i++) { string _key = dataTypes.ReadNextString(packetData); Double _value = dataTypes.ReadNextDouble(packetData); List op0 = new List(); List op1 = new List(); List op2 = new List(); int NumberOfModifiers = dataTypes.ReadNextVarInt(packetData); for (int j = 0; j < NumberOfModifiers; j++) { dataTypes.ReadNextUUID(packetData); Double amount = dataTypes.ReadNextDouble(packetData); byte operation = dataTypes.ReadNextByte(packetData); switch (operation) { case 0: op0.Add(amount); break; case 1: op1.Add(amount); break; case 2: op2.Add(amount + 1); break; } } if (op0.Count > 0) _value += op0.Sum(); if (op1.Count > 0) _value *= 1 + op1.Sum(); if (op2.Count > 0) _value *= op2.Aggregate((a, _x) => a * _x); keys.Add(_key, _value); } handler.OnEntityProperties(EntityID, keys); } break; case PacketTypesIn.EntityMetadata: if (handler.GetEntityHandlingEnabled()) { int EntityID = dataTypes.ReadNextVarInt(packetData); Dictionary metadata = dataTypes.ReadNextMetadata(packetData, itemPalette); int healthField = protocolversion >= MC114Version ? 8 : 7; // Health is field no. 7 in 1.10+ and 8 in 1.14+ if (metadata.ContainsKey(healthField) && metadata[healthField] != null && metadata[healthField].GetType() == typeof(float)) handler.OnEntityHealth(EntityID, (float)metadata[healthField]); handler.OnEntityMetadata(EntityID, metadata); } break; case PacketTypesIn.TimeUpdate: long WorldAge = dataTypes.ReadNextLong(packetData); long TimeOfday = dataTypes.ReadNextLong(packetData); handler.OnTimeUpdate(WorldAge, TimeOfday); break; case PacketTypesIn.EntityTeleport: if (handler.GetEntityHandlingEnabled()) { int EntityID = dataTypes.ReadNextVarInt(packetData); Double X = dataTypes.ReadNextDouble(packetData); Double Y = dataTypes.ReadNextDouble(packetData); Double Z = dataTypes.ReadNextDouble(packetData); byte EntityYaw = dataTypes.ReadNextByte(packetData); byte EntityPitch = dataTypes.ReadNextByte(packetData); bool OnGround = dataTypes.ReadNextBool(packetData); handler.OnEntityTeleport(EntityID, X, Y, Z, OnGround); } break; case PacketTypesIn.UpdateHealth: float health = dataTypes.ReadNextFloat(packetData); int food; if (protocolversion >= MC18Version) food = dataTypes.ReadNextVarInt(packetData); else food = dataTypes.ReadNextShort(packetData); dataTypes.ReadNextFloat(packetData); // Food Saturation handler.OnUpdateHealth(health, food); break; case PacketTypesIn.SetExperience: float experiencebar = dataTypes.ReadNextFloat(packetData); int level = dataTypes.ReadNextVarInt(packetData); int totalexperience = dataTypes.ReadNextVarInt(packetData); handler.OnSetExperience(experiencebar, level, totalexperience); break; case PacketTypesIn.Explosion: Location explosionLocation = new Location(dataTypes.ReadNextFloat(packetData), dataTypes.ReadNextFloat(packetData), dataTypes.ReadNextFloat(packetData)); float explosionStrength = dataTypes.ReadNextFloat(packetData); int explosionBlockCount = dataTypes.ReadNextInt(packetData); // Ignoring additional fields (records, pushback) handler.OnExplosion(explosionLocation, explosionStrength, explosionBlockCount); break; case PacketTypesIn.HeldItemChange: byte slot = dataTypes.ReadNextByte(packetData); handler.OnHeldItemChange(slot); break; case PacketTypesIn.ScoreboardObjective: string objectivename = dataTypes.ReadNextString(packetData); byte mode = dataTypes.ReadNextByte(packetData); string objectivevalue = String.Empty; int type2 = -1; if (mode == 0 || mode == 2) { objectivevalue = dataTypes.ReadNextString(packetData); type2 = dataTypes.ReadNextVarInt(packetData); } handler.OnScoreboardObjective(objectivename, mode, objectivevalue, type2); break; case PacketTypesIn.UpdateScore: string entityname = dataTypes.ReadNextString(packetData); byte action3 = dataTypes.ReadNextByte(packetData); string objectivename2 = null; int value = -1; if (action3 != 1 || protocolversion >= MC18Version) objectivename2 = dataTypes.ReadNextString(packetData); if (action3 != 1) value = dataTypes.ReadNextVarInt(packetData); handler.OnUpdateScore(entityname, action3, objectivename2, value); break; default: return false; //Ignored packet } return true; //Packet processed } catch (Exception innerException) { if (innerException is ThreadAbortException || innerException is SocketException || innerException.InnerException is SocketException) throw; //Thread abort or Connection lost rather than invalid data throw new System.IO.InvalidDataException( Translations.Get("exception.packet_process", packetPalette.GetIncommingTypeById(packetID), packetID, protocolversion, login_phase, innerException.GetType()), innerException); } } /// /// Start the updating thread. Should be called after login success. /// private void StartUpdating() { netRead = new Thread(new ThreadStart(Updater)); netRead.Name = "ProtocolPacketHandler"; netRead.Start(); } /// /// Disconnect from the server, cancel network reading. /// public void Dispose() { try { if (netRead != null) { netRead.Abort(); socketWrapper.Disconnect(); } } catch { } } /// /// Send a packet to the server. Packet ID, compression, and encryption will be handled automatically. /// /// packet type /// packet Data private void SendPacket(PacketTypesOut packet, IEnumerable packetData) { SendPacket(packetPalette.GetOutgoingIdByType(packet), packetData); } /// /// Send a packet to the server. Compression and encryption will be handled automatically. /// /// packet ID /// packet Data private void SendPacket(int packetID, IEnumerable packetData) { if (handler.GetNetworkPacketCaptureEnabled()) { List clone = packetData.ToList(); handler.OnNetworkPacket(packetID, clone, login_phase, false); } //The inner packet byte[] the_packet = dataTypes.ConcatBytes(dataTypes.GetVarInt(packetID), packetData.ToArray()); if (compression_treshold > 0) //Compression enabled? { if (the_packet.Length >= compression_treshold) //Packet long enough for compressing? { byte[] compressed_packet = ZlibUtils.Compress(the_packet); the_packet = dataTypes.ConcatBytes(dataTypes.GetVarInt(the_packet.Length), compressed_packet); } else { byte[] uncompressed_length = dataTypes.GetVarInt(0); //Not compressed (short packet) the_packet = dataTypes.ConcatBytes(uncompressed_length, the_packet); } } socketWrapper.SendDataRAW(dataTypes.ConcatBytes(dataTypes.GetVarInt(the_packet.Length), the_packet)); } /// /// Do the Minecraft login. /// /// True if login successful public bool Login() { byte[] protocol_version = dataTypes.GetVarInt(protocolversion); string server_address = pForge.GetServerAddress(handler.GetServerHost()); byte[] server_port = dataTypes.GetUShort((ushort)handler.GetServerPort()); byte[] next_state = dataTypes.GetVarInt(2); byte[] handshake_packet = dataTypes.ConcatBytes(protocol_version, dataTypes.GetString(server_address), server_port, next_state); SendPacket(0x00, handshake_packet); byte[] login_packet = dataTypes.GetString(handler.GetUsername()); SendPacket(0x00, login_packet); int packetID = -1; Queue packetData = new Queue(); while (true) { ReadNextPacket(ref packetID, packetData); if (packetID == 0x00) //Login rejected { handler.OnConnectionLost(ChatBot.DisconnectReason.LoginRejected, ChatParser.ParseText(dataTypes.ReadNextString(packetData))); return false; } else if (packetID == 0x01) //Encryption request { string serverID = dataTypes.ReadNextString(packetData); byte[] Serverkey = dataTypes.ReadNextByteArray(packetData); byte[] token = dataTypes.ReadNextByteArray(packetData); return StartEncryption(handler.GetUserUUID(), handler.GetSessionID(), token, serverID, Serverkey); } else if (packetID == 0x02) //Login successful { Translations.WriteLineFormatted("mcc.server_offline"); login_phase = false; if (!pForge.CompleteForgeHandshake()) { Translations.WriteLineFormatted("error.forge"); return false; } StartUpdating(); return true; //No need to check session or start encryption } else HandlePacket(packetID, packetData); } } /// /// Start network encryption. Automatically called by Login() if the server requests encryption. /// /// True if encryption was successful private bool StartEncryption(string uuid, string sessionID, byte[] token, string serverIDhash, byte[] serverKey) { System.Security.Cryptography.RSACryptoServiceProvider RSAService = CryptoHandler.DecodeRSAPublicKey(serverKey); byte[] secretKey = CryptoHandler.GenerateAESPrivateKey(); if (Settings.DebugMessages) Translations.WriteLineFormatted("debug.crypto"); if (serverIDhash != "-") { Translations.WriteLine("mcc.session"); if (!ProtocolHandler.SessionCheck(uuid, sessionID, CryptoHandler.getServerHash(serverIDhash, serverKey, secretKey))) { handler.OnConnectionLost(ChatBot.DisconnectReason.LoginRejected, Translations.Get("mcc.session_fail")); return false; } } //Encrypt the data byte[] key_enc = dataTypes.GetArray(RSAService.Encrypt(secretKey, false)); byte[] token_enc = dataTypes.GetArray(RSAService.Encrypt(token, false)); //Encryption Response packet SendPacket(0x01, dataTypes.ConcatBytes(key_enc, token_enc)); //Start client-side encryption socketWrapper.SwitchToEncrypted(secretKey); //Process the next packet int packetID = -1; Queue packetData = new Queue(); while (true) { ReadNextPacket(ref packetID, packetData); if (packetID == 0x00) //Login rejected { handler.OnConnectionLost(ChatBot.DisconnectReason.LoginRejected, ChatParser.ParseText(dataTypes.ReadNextString(packetData))); return false; } else if (packetID == 0x02) //Login successful { login_phase = false; if (!pForge.CompleteForgeHandshake()) { Translations.WriteLineFormatted("error.forge_encrypt"); return false; } StartUpdating(); return true; } else HandlePacket(packetID, packetData); } } /// /// Disconnect from the server /// public void Disconnect() { socketWrapper.Disconnect(); } /// /// Autocomplete text while typing username or command /// /// Text behind cursor /// Completed text IEnumerable IAutoComplete.AutoComplete(string BehindCursor) { if (String.IsNullOrEmpty(BehindCursor)) return new string[] { }; byte[] transaction_id = dataTypes.GetVarInt(autocomplete_transaction_id); byte[] assume_command = new byte[] { 0x00 }; byte[] has_position = new byte[] { 0x00 }; byte[] tabcomplete_packet = new byte[] { }; if (protocolversion >= MC18Version) { if (protocolversion >= MC113Version) { tabcomplete_packet = dataTypes.ConcatBytes(tabcomplete_packet, transaction_id); tabcomplete_packet = dataTypes.ConcatBytes(tabcomplete_packet, dataTypes.GetString(BehindCursor)); } else { tabcomplete_packet = dataTypes.ConcatBytes(tabcomplete_packet, dataTypes.GetString(BehindCursor)); if (protocolversion >= MC19Version) { tabcomplete_packet = dataTypes.ConcatBytes(tabcomplete_packet, assume_command); } tabcomplete_packet = dataTypes.ConcatBytes(tabcomplete_packet, has_position); } } else { tabcomplete_packet = dataTypes.ConcatBytes(dataTypes.GetString(BehindCursor)); } autocomplete_received = false; autocomplete_result.Clear(); autocomplete_result.Add(BehindCursor); SendPacket(PacketTypesOut.TabComplete, tabcomplete_packet); int wait_left = 50; //do not wait more than 5 seconds (50 * 100 ms) Thread t1 = new Thread(new ThreadStart(delegate { while (wait_left > 0 && !autocomplete_received) { System.Threading.Thread.Sleep(100); wait_left--; } if (autocomplete_result.Count > 0) ConsoleIO.WriteLineFormatted("ยง8" + String.Join(" ", autocomplete_result), false); })); t1.Start(); return autocomplete_result; } /// /// Ping a Minecraft server to get information about the server /// /// True if ping was successful public static bool doPing(string host, int port, ref int protocolversion, ref ForgeInfo forgeInfo) { string version = ""; TcpClient tcp = ProxyHandler.newTcpClient(host, port); tcp.ReceiveBufferSize = 1024 * 1024; SocketWrapper socketWrapper = new SocketWrapper(tcp); DataTypes dataTypes = new DataTypes(MC18Version); byte[] packet_id = dataTypes.GetVarInt(0); byte[] protocol_version = dataTypes.GetVarInt(-1); byte[] server_port = BitConverter.GetBytes((ushort)port); Array.Reverse(server_port); byte[] next_state = dataTypes.GetVarInt(1); byte[] packet = dataTypes.ConcatBytes(packet_id, protocol_version, dataTypes.GetString(host), server_port, next_state); byte[] tosend = dataTypes.ConcatBytes(dataTypes.GetVarInt(packet.Length), packet); socketWrapper.SendDataRAW(tosend); byte[] status_request = dataTypes.GetVarInt(0); byte[] request_packet = dataTypes.ConcatBytes(dataTypes.GetVarInt(status_request.Length), status_request); socketWrapper.SendDataRAW(request_packet); int packetLength = dataTypes.ReadNextVarIntRAW(socketWrapper); if (packetLength > 0) //Read Response length { Queue packetData = new Queue(socketWrapper.ReadDataRAW(packetLength)); if (dataTypes.ReadNextVarInt(packetData) == 0x00) //Read Packet ID { string result = dataTypes.ReadNextString(packetData); //Get the Json data if (Settings.DebugMessages) { // May contain formatting codes, cannot use WriteLineFormatted Console.ForegroundColor = ConsoleColor.DarkGray; ConsoleIO.WriteLine(result); Console.ForegroundColor = ConsoleColor.Gray; } if (!String.IsNullOrEmpty(result) && result.StartsWith("{") && result.EndsWith("}")) { Json.JSONData jsonData = Json.ParseJson(result); if (jsonData.Type == Json.JSONData.DataType.Object && jsonData.Properties.ContainsKey("version")) { Json.JSONData versionData = jsonData.Properties["version"]; //Retrieve display name of the Minecraft version if (versionData.Properties.ContainsKey("name")) version = versionData.Properties["name"].StringValue; //Retrieve protocol version number for handling this server if (versionData.Properties.ContainsKey("protocol")) protocolversion = dataTypes.Atoi(versionData.Properties["protocol"].StringValue); // Check for forge on the server. Protocol18Forge.ServerInfoCheckForge(jsonData, ref forgeInfo); ConsoleIO.WriteLineFormatted(Translations.Get("mcc.server_protocol", version, protocolversion + (forgeInfo != null ? Translations.Get("mcc.with_forge") : ""))); return true; } } } } return false; } /// /// Get max length for chat messages /// /// Max length, in characters public int GetMaxChatMessageLength() { return protocolversion > MC110Version ? 256 : 100; } /// /// Get the current protocol version. /// /// /// Version-specific operations should be handled inside the Protocol handled whenever possible. /// /// Minecraft Protocol version number public int GetProtocolVersion() { return protocolversion; } /// /// Send a chat message to the server /// /// Message /// True if properly sent public bool SendChatMessage(string message) { if (String.IsNullOrEmpty(message)) return true; try { byte[] message_packet = dataTypes.GetString(message); SendPacket(PacketTypesOut.ChatMessage, message_packet); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } public bool SendEntityAction(int PlayerEntityID, int ActionID) { try { List fields = new List(); fields.AddRange(dataTypes.GetVarInt(PlayerEntityID)); fields.AddRange(dataTypes.GetVarInt(ActionID)); fields.AddRange(dataTypes.GetVarInt(0)); SendPacket(PacketTypesOut.EntityAction, fields); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } /// /// Send a respawn packet to the server /// /// True if properly sent public bool SendRespawnPacket() { try { SendPacket(PacketTypesOut.ClientStatus, new byte[] { 0 }); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } /// /// Tell the server what client is being used to connect to the server /// /// Client string describing the client /// True if brand info was successfully sent public bool SendBrandInfo(string brandInfo) { if (String.IsNullOrEmpty(brandInfo)) return false; // Plugin channels were significantly changed between Minecraft 1.12 and 1.13 // https://wiki.vg/index.php?title=Pre-release_protocol&oldid=14132#Plugin_Channels if (protocolversion >= MC113Version) { return SendPluginChannelPacket("minecraft:brand", dataTypes.GetString(brandInfo)); } else { return SendPluginChannelPacket("MC|Brand", dataTypes.GetString(brandInfo)); } } /// /// Inform the server of the client's Minecraft settings /// /// Client language eg en_US /// View distance, in chunks /// Game difficulty (client-side...) /// Chat mode (allows muting yourself) /// Show chat colors /// Show skin layers /// 1.9+ main hand /// True if client settings were successfully sent public bool SendClientSettings(string language, byte viewDistance, byte difficulty, byte chatMode, bool chatColors, byte skinParts, byte mainHand) { try { List fields = new List(); fields.AddRange(dataTypes.GetString(language)); fields.Add(viewDistance); fields.AddRange(protocolversion >= MC19Version ? dataTypes.GetVarInt(chatMode) : new byte[] { chatMode }); fields.Add(chatColors ? (byte)1 : (byte)0); if (protocolversion < MC18Version) { fields.Add(difficulty); fields.Add((byte)(skinParts & 0x1)); //show cape } else fields.Add(skinParts); if (protocolversion >= MC19Version) fields.AddRange(dataTypes.GetVarInt(mainHand)); SendPacket(PacketTypesOut.ClientSettings, fields); } catch (SocketException) { } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } return false; } /// /// Send a location update to the server /// /// The new location of the player /// True if the player is on the ground /// Optional new yaw for updating player look /// Optional new pitch for updating player look /// True if the location update was successfully sent public bool SendLocationUpdate(Location location, bool onGround, float? yaw = null, float? pitch = null) { if (handler.GetTerrainEnabled()) { byte[] yawpitch = new byte[0]; PacketTypesOut packetType = PacketTypesOut.PlayerPosition; if (yaw.HasValue && pitch.HasValue) { yawpitch = dataTypes.ConcatBytes(dataTypes.GetFloat(yaw.Value), dataTypes.GetFloat(pitch.Value)); packetType = PacketTypesOut.PlayerPositionAndRotation; } try { SendPacket(packetType, dataTypes.ConcatBytes( dataTypes.GetDouble(location.X), dataTypes.GetDouble(location.Y), protocolversion < MC18Version ? dataTypes.GetDouble(location.Y + 1.62) : new byte[0], dataTypes.GetDouble(location.Z), yawpitch, new byte[] { onGround ? (byte)1 : (byte)0 })); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } else return false; } /// /// Send a plugin channel packet (0x17) to the server, compression and encryption will be handled automatically /// /// Channel to send packet on /// packet Data public bool SendPluginChannelPacket(string channel, byte[] data) { try { // In 1.7, length needs to be included. // In 1.8, it must not be. if (protocolversion < MC18Version) { byte[] length = BitConverter.GetBytes((short)data.Length); Array.Reverse(length); SendPacket(PacketTypesOut.PluginMessage, dataTypes.ConcatBytes(dataTypes.GetString(channel), length, data)); } else { SendPacket(PacketTypesOut.PluginMessage, dataTypes.ConcatBytes(dataTypes.GetString(channel), data)); } return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } /// /// Send a Login Plugin Response packet (0x02) /// /// Login Plugin Request message Id /// TRUE if the request was understood /// Response to the request /// TRUE if successfully sent public bool SendLoginPluginResponse(int messageId, bool understood, byte[] data) { try { SendPacket(0x02, dataTypes.ConcatBytes(dataTypes.GetVarInt(messageId), dataTypes.GetBool(understood), data)); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } /// /// Send an Interact Entity Packet to server /// /// /// /// public bool SendInteractEntity(int EntityID, int type) { try { List fields = new List(); fields.AddRange(dataTypes.GetVarInt(EntityID)); fields.AddRange(dataTypes.GetVarInt(type)); // Is player Sneaking (Only 1.16 and above) // Currently hardcoded to false // TODO: Update to reflect the real player state if (protocolversion >= MC116Version) fields.AddRange(dataTypes.GetBool(false)); SendPacket(PacketTypesOut.InteractEntity, fields); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } // TODO: Interact at block location (e.g. chest minecart) public bool SendInteractEntity(int EntityID, int type, float X, float Y, float Z, int hand) { try { List fields = new List(); fields.AddRange(dataTypes.GetVarInt(EntityID)); fields.AddRange(dataTypes.GetVarInt(type)); fields.AddRange(dataTypes.GetFloat(X)); fields.AddRange(dataTypes.GetFloat(Y)); fields.AddRange(dataTypes.GetFloat(Z)); fields.AddRange(dataTypes.GetVarInt(hand)); // Is player Sneaking (Only 1.16 and above) // Currently hardcoded to false // TODO: Update to reflect the real player state if (protocolversion >= MC116Version) fields.AddRange(dataTypes.GetBool(false)); SendPacket(PacketTypesOut.InteractEntity, fields); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } public bool SendInteractEntity(int EntityID, int type, int hand) { try { List fields = new List(); fields.AddRange(dataTypes.GetVarInt(EntityID)); fields.AddRange(dataTypes.GetVarInt(type)); fields.AddRange(dataTypes.GetVarInt(hand)); // Is player Sneaking (Only 1.16 and above) // Currently hardcoded to false // TODO: Update to reflect the real player state if (protocolversion >= MC116Version) fields.AddRange(dataTypes.GetBool(false)); SendPacket(PacketTypesOut.InteractEntity, fields); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } public bool SendInteractEntity(int EntityID, int type, float X, float Y, float Z) { return false; } public bool SendUseItem(int hand) { if (protocolversion < MC19Version) return false; // Packet does not exist prior to MC 1.9 // According to https://wiki.vg/index.php?title=Protocol&oldid=5486#Player_Block_Placement // MC 1.7 does this using Player Block Placement with special values // TODO once Player Block Placement is implemented for older versions try { List packet = new List(); packet.AddRange(dataTypes.GetVarInt(hand)); SendPacket(PacketTypesOut.UseItem, packet); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } public bool SendPlayerDigging(int status, Location location, Direction face) { try { List packet = new List(); packet.AddRange(dataTypes.GetVarInt(status)); packet.AddRange(dataTypes.GetLocation(location)); packet.AddRange(dataTypes.GetVarInt(dataTypes.GetBlockFace(face))); SendPacket(PacketTypesOut.PlayerDigging, packet); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } public bool SendPlayerBlockPlacement(int hand, Location location, Direction face) { if (protocolversion < MC114Version) return false; // NOT IMPLEMENTED for older MC versions try { List packet = new List(); packet.AddRange(dataTypes.GetVarInt(hand)); packet.AddRange(dataTypes.GetLocation(location)); packet.AddRange(dataTypes.GetVarInt(dataTypes.GetBlockFace(face))); packet.AddRange(dataTypes.GetFloat(0.5f)); // cursorX packet.AddRange(dataTypes.GetFloat(0.5f)); // cursorY packet.AddRange(dataTypes.GetFloat(0.5f)); // cursorZ packet.Add(0); // insideBlock = false; SendPacket(PacketTypesOut.PlayerBlockPlacement, packet); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } public bool SendHeldItemChange(short slot) { try { List packet = new List(); packet.AddRange(dataTypes.GetShort(slot)); SendPacket(PacketTypesOut.HeldItemChange, packet); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } public bool SendWindowAction(int windowId, int slotId, WindowActionType action, Item item) { try { short actionNumber; lock (window_actions) { if (!window_actions.ContainsKey(windowId)) window_actions[windowId] = 0; actionNumber = (short)(window_actions[windowId] + 1); window_actions[windowId] = actionNumber; } byte button = 0; byte mode = 0; switch (action) { case WindowActionType.LeftClick: button = 0; break; case WindowActionType.RightClick: button = 1; break; case WindowActionType.MiddleClick: button = 2; mode = 3; break; case WindowActionType.ShiftClick: button = 0; mode = 1; item = new Item(ItemType.Null, 0, null); break; case WindowActionType.DropItem: button = 0; mode = 4; item = new Item(ItemType.Null, 0, null); break; case WindowActionType.DropItemStack: button = 1; mode = 4; item = new Item(ItemType.Null, 0, null); break; case WindowActionType.StartDragLeft: button = 0; mode = 5; item = new Item(ItemType.Null, 0, null); slotId = -999; break; case WindowActionType.StartDragRight: button = 4; mode = 5; item = new Item(ItemType.Null, 0, null); slotId = -999; break; case WindowActionType.StartDragMiddle: button = 8; mode = 5; item = new Item(ItemType.Null, 0, null); slotId = -999; break; case WindowActionType.EndDragLeft: button = 2; mode = 5; item = new Item(ItemType.Null, 0, null); slotId = -999; break; case WindowActionType.EndDragRight: button = 6; mode = 5; item = new Item(ItemType.Null, 0, null); slotId = -999; break; case WindowActionType.EndDragMiddle: button = 10; mode = 5; item = new Item(ItemType.Null, 0, null); slotId = -999; break; case WindowActionType.AddDragLeft: button = 1; mode = 5; item = new Item(ItemType.Null, 0, null); break; case WindowActionType.AddDragRight: button = 5; mode = 5; item = new Item(ItemType.Null, 0, null); break; case WindowActionType.AddDragMiddle: button = 9; mode = 5; item = new Item(ItemType.Null, 0, null); break; } List packet = new List(); packet.Add((byte)windowId); packet.AddRange(dataTypes.GetShort((short)slotId)); packet.Add(button); packet.AddRange(dataTypes.GetShort(actionNumber)); if (protocolversion >= MC19Version) packet.AddRange(dataTypes.GetVarInt(mode)); else packet.Add(mode); packet.AddRange(dataTypes.GetItemSlot(item, itemPalette)); SendPacket(PacketTypesOut.ClickWindow, packet); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } public bool SendCreativeInventoryAction(int slot, ItemType itemType, int count, Dictionary nbt) { try { List packet = new List(); packet.AddRange(dataTypes.GetShort((short)slot)); packet.AddRange(dataTypes.GetItemSlot(new Item(itemType, count, nbt), itemPalette)); SendPacket(PacketTypesOut.CreativeInventoryAction, packet); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } public bool SendAnimation(int animation, int playerid) { try { if (animation == 0 || animation == 1) { List packet = new List(); if (protocolversion < MC18Version) { packet.AddRange(dataTypes.GetInt(playerid)); packet.Add((byte)1); // Swing arm } else if (protocolversion < MC19Version) { // No fields in 1.8.X } else // MC 1.9+ { packet.AddRange(dataTypes.GetVarInt(animation)); } SendPacket(PacketTypesOut.Animation, packet); return true; } else { return false; } } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } public bool SendCloseWindow(int windowId) { try { lock (window_actions) { if (window_actions.ContainsKey(windowId)) window_actions[windowId] = 0; } SendPacket(PacketTypesOut.CloseWindow, new[] { (byte)windowId }); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } public bool SendUpdateSign(Location sign, string line1, string line2, string line3, string line4) { try { if (line1.Length > 23) line1 = line1.Substring(0, 23); if (line2.Length > 23) line2 = line1.Substring(0, 23); if (line3.Length > 23) line3 = line1.Substring(0, 23); if (line4.Length > 23) line4 = line1.Substring(0, 23); List packet = new List(); packet.AddRange(dataTypes.GetLocation(sign)); packet.AddRange(dataTypes.GetString(line1)); packet.AddRange(dataTypes.GetString(line2)); packet.AddRange(dataTypes.GetString(line3)); packet.AddRange(dataTypes.GetString(line4)); SendPacket(PacketTypesOut.UpdateSign, packet); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } public bool UpdateCommandBlock(Location location, string command, CommandBlockMode mode, CommandBlockFlags flags) { if (protocolversion <= MC113Version) { try { List packet = new List(); packet.AddRange(dataTypes.GetLocation(location)); packet.AddRange(dataTypes.GetString(command)); packet.AddRange(dataTypes.GetVarInt((int)mode)); packet.Add((byte)flags); SendPacket(PacketTypesOut.UpdateSign, packet); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } else { return false; } } public bool SendWindowConfirmation(byte windowID, short actionID, bool accepted) { try { List packet = new List(); packet.Add(windowID); packet.AddRange(dataTypes.GetShort(actionID)); packet.Add(accepted ? (byte)1 : (byte)0); SendPacket(PacketTypesOut.WindowConfirmation, packet); return true; } catch (SocketException) { return false; } catch (System.IO.IOException) { return false; } catch (ObjectDisposedException) { return false; } } } }