protected void DecodeCert(McpeLogin message) { byte[] buffer = message.payload; if (message.payload.Length != buffer.Length) { Log.Debug($"Wrong lenght {message.payload.Length} != {message.payload.Length}"); throw new Exception($"Wrong lenght {message.payload.Length} != {message.payload.Length}"); } if (Log.IsDebugEnabled) { Log.Debug("Lenght: " + message.payload.Length + ", Message: " + Convert.ToBase64String(buffer)); } string certificateChain; string skinData; try { var destination = new MemoryStream(buffer); destination.Position = 0; NbtBinaryReader reader = new NbtBinaryReader(destination, false); var countCertData = reader.ReadInt32(); certificateChain = Encoding.UTF8.GetString(reader.ReadBytes(countCertData)); if (Log.IsDebugEnabled) { Log.Debug($"Certificate Chain (Lenght={countCertData})\n{certificateChain}"); } var countSkinData = reader.ReadInt32(); skinData = Encoding.UTF8.GetString(reader.ReadBytes(countSkinData)); if (Log.IsDebugEnabled) { Log.Debug($"Skin data (Lenght={countSkinData})\n{skinData}"); } } catch (Exception e) { Log.Error("Parsing login", e); return; } try { { IDictionary <string, dynamic> headers = JWT.Headers(skinData); dynamic payload = JObject.Parse(JWT.Payload(skinData)); if (Log.IsDebugEnabled) { Log.Debug($"Skin JWT Header: {string.Join(";", headers)}"); } if (Log.IsDebugEnabled) { Log.Debug($"Skin JWT Payload:\n{payload.ToString()}"); } try { _playerInfo.ClientId = payload.ClientRandomId; _playerInfo.CurrentInputMode = payload.CurrentInputMode; _playerInfo.DefaultInputMode = payload.DefaultInputMode; _playerInfo.DeviceModel = payload.DeviceModel; _playerInfo.DeviceOS = payload.DeviceOS; _playerInfo.GameVersion = payload.GameVersion; _playerInfo.GuiScale = payload.GuiScale; _playerInfo.LanguageCode = payload.LanguageCode; _playerInfo.ServerAddress = payload.ServerAddress; _playerInfo.UIProfile = payload.UIProfile; _playerInfo.Skin = new Skin() { CapeData = Convert.FromBase64String((string)payload.CapeData), SkinId = payload.SkinId, SkinData = Convert.FromBase64String((string)payload.SkinData), SkinGeometryName = payload.SkinGeometryName, SkinGeometry = Convert.FromBase64String((string)payload.SkinGeometry), }; Log.Warn($"Cape data lenght={_playerInfo.Skin.CapeData.Length}"); } catch (Exception e) { Log.Error("Parsing skin data", e); } } { dynamic json = JObject.Parse(certificateChain); if (Log.IsDebugEnabled) { Log.Debug($"Certificate JSON:\n{json}"); } JArray chain = json.chain; //var chainArray = chain.ToArray(); string validationKey = null; string identityPublicKey = null; foreach (JToken token in chain) { IDictionary <string, dynamic> headers = JWT.Headers(token.ToString()); if (Log.IsDebugEnabled) { Log.Debug("Raw chain element:\n" + token.ToString()); Log.Debug($"JWT Header: {string.Join(";", headers)}"); dynamic jsonPayload = JObject.Parse(JWT.Payload(token.ToString())); Log.Debug($"JWT Payload:\n{jsonPayload}"); } // Mojang root x5u cert (string): MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAE8ELkixyLcwlZryUQcu1TvPOmI2B7vX83ndnWRUaXm74wFfa5f/lwQNTfrLVHa2PmenpGI6JhIMUJaWZrjmMj90NoKNFSNBuKdm8rYiXsfaz3K36x/1U26HpG0ZxK/V1V if (!headers.ContainsKey("x5u")) { continue; } string x5u = headers["x5u"]; if (identityPublicKey == null) { if (CertificateData.MojangRootKey.Equals(x5u, StringComparison.InvariantCultureIgnoreCase)) { Log.Debug("Key is ok, and got Mojang root"); } else if (chain.Count > 1) { Log.Debug("Got client cert (client root)"); continue; } else if (chain.Count == 1) { Log.Debug("Selfsigned chain"); } } else if (identityPublicKey.Equals(x5u)) { Log.Debug("Derived Key is ok"); } if (Log.IsDebugEnabled) { Log.Debug($"x5u cert (string): {x5u}"); ECDiffieHellmanPublicKey publicKey = CryptoUtils.CreateEcDiffieHellmanPublicKey(x5u); Log.Debug($"Cert:\n{publicKey.ToXmlString()}"); } // Validate CngKey newKey = CryptoUtils.ImportECDsaCngKeyFromString(x5u); CertificateData data = JWT.Decode <CertificateData>(token.ToString(), newKey); if (data != null) { identityPublicKey = data.IdentityPublicKey; if (Log.IsDebugEnabled) { Log.Debug("Decoded token success"); } if (CertificateData.MojangRootKey.Equals(x5u, StringComparison.InvariantCultureIgnoreCase)) { Log.Debug("Got Mojang key. Is valid = " + data.CertificateAuthority); validationKey = data.IdentityPublicKey; } else if (validationKey != null && validationKey.Equals(x5u, StringComparison.InvariantCultureIgnoreCase)) { _playerInfo.CertificateData = data; } else { if (data.ExtraData == null) { continue; } // Self signed, make sure they don't fake XUID if (data.ExtraData.Xuid != null) { Log.Warn("Received fake XUID from " + data.ExtraData.DisplayName); data.ExtraData.Xuid = null; } _playerInfo.CertificateData = data; } } else { Log.Error("Not a valid Identity Public Key for decoding"); } } //TODO: Implement disconnect here { _playerInfo.Username = _playerInfo.CertificateData.ExtraData.DisplayName; _session.Username = _playerInfo.Username; string identity = _playerInfo.CertificateData.ExtraData.Identity; if (Log.IsDebugEnabled) { Log.Debug($"Connecting user {_playerInfo.Username} with identity={identity}"); } _playerInfo.ClientUuid = new UUID(identity); _session.CryptoContext = new CryptoContext { UseEncryption = Config.GetProperty("UseEncryptionForAll", false) || (Config.GetProperty("UseEncryption", true) && !string.IsNullOrWhiteSpace(_playerInfo.CertificateData.ExtraData.Xuid)), }; if (_session.CryptoContext.UseEncryption) { ECDiffieHellmanPublicKey publicKey = CryptoUtils.CreateEcDiffieHellmanPublicKey(_playerInfo.CertificateData.IdentityPublicKey); if (Log.IsDebugEnabled) { Log.Debug($"Cert:\n{publicKey.ToXmlString()}"); } // Create shared shared secret ECDiffieHellmanCng ecKey = new ECDiffieHellmanCng(384); ecKey.HashAlgorithm = CngAlgorithm.Sha256; ecKey.KeyDerivationFunction = ECDiffieHellmanKeyDerivationFunction.Hash; ecKey.SecretPrepend = Encoding.UTF8.GetBytes("RANDOM SECRET"); // Server token byte[] secret = ecKey.DeriveKeyMaterial(publicKey); if (Log.IsDebugEnabled) { Log.Debug($"SECRET KEY (b64):\n{Convert.ToBase64String(secret)}"); } { RijndaelManaged rijAlg = new RijndaelManaged { BlockSize = 128, Padding = PaddingMode.None, Mode = CipherMode.CFB, FeedbackSize = 8, Key = secret, IV = secret.Take(16).ToArray(), }; // Create a decrytor to perform the stream transform. ICryptoTransform decryptor = rijAlg.CreateDecryptor(rijAlg.Key, rijAlg.IV); MemoryStream inputStream = new MemoryStream(); CryptoStream cryptoStreamIn = new CryptoStream(inputStream, decryptor, CryptoStreamMode.Read); ICryptoTransform encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV); MemoryStream outputStream = new MemoryStream(); CryptoStream cryptoStreamOut = new CryptoStream(outputStream, encryptor, CryptoStreamMode.Write); _session.CryptoContext.Algorithm = rijAlg; _session.CryptoContext.Decryptor = decryptor; _session.CryptoContext.Encryptor = encryptor; _session.CryptoContext.InputStream = inputStream; _session.CryptoContext.OutputStream = outputStream; _session.CryptoContext.CryptoStreamIn = cryptoStreamIn; _session.CryptoContext.CryptoStreamOut = cryptoStreamOut; } //TODO: JSON now. throw new Exception("JSON!!!"); //var response = McpeServerToClientHandshake.CreateObject(); // response.NoBatch = true; // response.ForceClear = true; //response.token = // response.serverPublicKey = Convert.ToBase64String(ecKey.PublicKey.GetDerEncoded()); // response.tokenLength = (short) ecKey.SecretPrepend.Length; // response.token = ecKey.SecretPrepend; //_session.SendPackage(response); if (Log.IsDebugEnabled) { Log.Warn($"Encryption enabled for {_session.Username}"); } } } } if (!_session.CryptoContext.UseEncryption) { _session.MessageHandler.HandleMcpeClientToServerHandshake(null); } } catch (Exception e) { Log.Error("Decrypt", e); } }
protected void DecodeCert(McpeLogin message) { // Get bytes byte[] buffer = message.payload; //Log.Debug($"Unknown byte in login packet is: {message.unknown}"); if (message.payload.Length != buffer.Length) { Log.Debug($"Wrong lenght {message.payload.Length} != {message.payload.Length}"); throw new Exception($"Wrong lenght {message.payload.Length} != {message.payload.Length}"); } // Decompress bytes Log.Debug("Lenght: " + message.payload.Length + ", Message: " + Convert.ToBase64String(buffer)); //MemoryStream stream = new MemoryStream(buffer); //if (stream.ReadByte() != 0x78) //{ // throw new InvalidDataException("Incorrect ZLib header. Expected 0x78 0x9C"); //} //stream.ReadByte(); string certificateChain; string skinData; //using (var defStream2 = new DeflateStream(stream, CompressionMode.Decompress, false)) { // Get actual package out of bytes //using (MemoryStream destination = MiNetServer.MemoryStreamManager.GetStream()) { //defStream2.CopyTo(destination); var destination = new MemoryStream(buffer); destination.Position = 0; NbtBinaryReader reader = new NbtBinaryReader(destination, false); try { var countCertData = reader.ReadInt32(); Log.Debug("Count cert: " + countCertData); certificateChain = Encoding.UTF8.GetString(reader.ReadBytes(countCertData)); Log.Debug("Decompressed certificateChain " + certificateChain); var countSkinData = reader.ReadInt32(); Log.Debug("Count skin: " + countSkinData); skinData = Encoding.UTF8.GetString(reader.ReadBytes(countSkinData)); Log.Debug("Decompressed skinData" + skinData); } catch (Exception e) { Log.Error("Parsing login", e); return; } } } try { { if (Log.IsDebugEnabled) { Log.Debug("Input SKIN string: " + skinData); } IDictionary <string, dynamic> headers = JWT.Headers(skinData); dynamic payload = JObject.Parse(JWT.Payload(skinData)); if (Log.IsDebugEnabled) { Log.Debug($"Skin JWT Header: {string.Join(";", headers)}"); } if (Log.IsDebugEnabled) { Log.Debug($"Skin JWT Payload:\n{payload.ToString()}"); } Console.WriteLine(payload); // Skin JWT Payload: //{ // "ClientRandomId": 1423700530444426768, // "CurrentInputMode": 1, // "DefaultInputMode": 1, // "DeviceModel": "ASUSTeK COMPUTER INC. N550JK", // "DeviceOS": 7, // "GameVersion": "1.2.0", // "GuiScale": 0, // "LanguageCode": "en_US", // "ServerAddress": "192.168.0.3:19132", // "SkinData": 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// "SkinId": "Standard_Custom", // "UIProfile": 0 //} try { _playerInfo.ClientId = payload.ClientRandomId; _playerInfo.CurrentInputMode = payload.CurrentInputMode; _playerInfo.DefaultInputMode = payload.DefaultInputMode; _playerInfo.DeviceModel = payload.DeviceModel; _playerInfo.DeviceOS = payload.DeviceOS; _playerInfo.GameVersion = payload.GameVersion; _playerInfo.GuiScale = payload.GuiScale; _playerInfo.LanguageCode = payload.LanguageCode; _playerInfo.ServerAddress = payload.ServerAddress; _playerInfo.UIProfile = payload.UIProfile; _playerInfo.Skin = new Skin() { SkinType = payload.SkinId, Texture = Convert.FromBase64String((string)payload.SkinData), GeometryType = (string)payload.SkinGeometryName, GeometryData = Encoding.ASCII.GetString(Convert.FromBase64String((string)payload.SkinGeometryData)) }; } catch (Exception e) { Log.Error("Skin info", e); } } { if (Log.IsDebugEnabled) { Log.Debug("Input JSON string: " + certificateChain); } dynamic json = JObject.Parse(certificateChain); if (Log.IsDebugEnabled) { Log.Debug($"JSON:\n{json}"); } string validationKey = null; JArray chain = json.chain; var chainArray = chain.ToArray(); string identityPublicKey = null; foreach (dynamic o in chainArray) { IDictionary <string, dynamic> headers = JWT.Headers(o.ToString()); if (Log.IsDebugEnabled) { Log.Debug("Raw chain element:\n" + o.ToString()); Log.Debug($"JWT Header: {string.Join(";", headers)}"); dynamic jsonPayload = JObject.Parse(JWT.Payload(o.ToString())); Log.Debug($"JWT Payload:\n{jsonPayload}"); } // x5u cert (string): MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAE8ELkixyLcwlZryUQcu1TvPOmI2B7vX83ndnWRUaXm74wFfa5f/lwQNTfrLVHa2PmenpGI6JhIMUJaWZrjmMj90NoKNFSNBuKdm8rYiXsfaz3K36x/1U26HpG0ZxK/V1V if (headers.ContainsKey("x5u")) { string certString = headers["x5u"]; if (identityPublicKey == null && CertificateData.MojangRootKey.Equals(certString, StringComparison.InvariantCultureIgnoreCase)) { Log.Debug("Key is ok, and got Mojang root"); } else if (identityPublicKey == null) { if (chainArray.Length > 1) { Log.Debug("Got client cert (client root)"); continue; } else if (chainArray.Length == 1) { Log.Debug("Selfsigned chain"); } } else if (identityPublicKey.Equals(certString)) { Log.Debug("Derived Key is ok"); } if (Log.IsDebugEnabled) { Log.Debug($"x5u cert (string): {certString}"); ECDiffieHellmanPublicKey publicKey = CryptoUtils.CreateEcDiffieHellmanPublicKey(certString); Log.Debug($"Cert:\n{publicKey.ToXmlString()}"); } // Validate var newKey = CryptoUtils.ImportECDsaCngKeyFromString(certString); CertificateData data = JWT.Decode <CertificateData>(o.ToString(), newKey); if (data != null) { identityPublicKey = data.IdentityPublicKey; if (Log.IsDebugEnabled) { Log.Debug("Decoded token success"); } if (CertificateData.MojangRootKey.Equals(certString, StringComparison.InvariantCultureIgnoreCase)) { Log.Debug("Got Mojang key. Is valid = " + data.CertificateAuthority); validationKey = data.IdentityPublicKey; } else if (validationKey != null && validationKey.Equals(certString, StringComparison.InvariantCultureIgnoreCase)) { _playerInfo.CertificateData = data; } else { if (data.ExtraData == null) { continue; } // Self signed, make sure they don't fake XUID if (data.ExtraData.Xuid != null) { Log.Warn("Received fake XUID from " + data.ExtraData.DisplayName); data.ExtraData.Xuid = null; } _playerInfo.CertificateData = data; } } else { Log.Error("Not a valid Identity Public Key for decoding"); } } } //TODO: Implement disconnect here { _playerInfo.Username = _playerInfo.CertificateData.ExtraData.DisplayName; _session.Username = _playerInfo.Username; string identity = _playerInfo.CertificateData.ExtraData.Identity; if (Log.IsDebugEnabled) { Log.Debug($"Connecting user {_playerInfo.Username} with identity={identity}"); } _playerInfo.ClientUuid = new UUID(identity); _session.CryptoContext = new CryptoContext { UseEncryption = Config.GetProperty("UseEncryptionForAll", false) || (Config.GetProperty("UseEncryption", true) && !string.IsNullOrWhiteSpace(_playerInfo.CertificateData.ExtraData.Xuid)), }; if (_session.CryptoContext.UseEncryption) { ECDiffieHellmanPublicKey publicKey = CryptoUtils.CreateEcDiffieHellmanPublicKey(_playerInfo.CertificateData.IdentityPublicKey); if (Log.IsDebugEnabled) { Log.Debug($"Cert:\n{publicKey.ToXmlString()}"); } // Create shared shared secret ECDiffieHellmanCng ecKey = new ECDiffieHellmanCng(384); ecKey.HashAlgorithm = CngAlgorithm.Sha256; ecKey.KeyDerivationFunction = ECDiffieHellmanKeyDerivationFunction.Hash; ecKey.SecretPrepend = Encoding.UTF8.GetBytes("RANDOM SECRET"); // Server token byte[] secret = ecKey.DeriveKeyMaterial(publicKey); if (Log.IsDebugEnabled) { Log.Debug($"SECRET KEY (b64):\n{Convert.ToBase64String(secret)}"); } { RijndaelManaged rijAlg = new RijndaelManaged { BlockSize = 128, Padding = PaddingMode.None, Mode = CipherMode.CFB, FeedbackSize = 8, Key = secret, IV = secret.Take(16).ToArray(), }; // Create a decrytor to perform the stream transform. ICryptoTransform decryptor = rijAlg.CreateDecryptor(rijAlg.Key, rijAlg.IV); MemoryStream inputStream = new MemoryStream(); CryptoStream cryptoStreamIn = new CryptoStream(inputStream, decryptor, CryptoStreamMode.Read); ICryptoTransform encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV); MemoryStream outputStream = new MemoryStream(); CryptoStream cryptoStreamOut = new CryptoStream(outputStream, encryptor, CryptoStreamMode.Write); _session.CryptoContext.Algorithm = rijAlg; _session.CryptoContext.Decryptor = decryptor; _session.CryptoContext.Encryptor = encryptor; _session.CryptoContext.InputStream = inputStream; _session.CryptoContext.OutputStream = outputStream; _session.CryptoContext.CryptoStreamIn = cryptoStreamIn; _session.CryptoContext.CryptoStreamOut = cryptoStreamOut; } var response = McpeServerToClientHandshake.CreateObject(); response.NoBatch = true; response.ForceClear = true; string b64Key = Convert.ToBase64String(ecKey.PublicKey.GetDerEncoded()); var j = CngKey.Create(CngAlgorithm.ECDiffieHellmanP384, null, new CngKeyCreationParameters() { ExportPolicy = CngExportPolicies.AllowPlaintextExport, KeyUsage = CngKeyUsages.AllUsages }); var jwt = JWT.Encode(new object[] { new [] { "salt", "sNUMIRcN2BSNRw93P5vGpg==" } }, j, JwsAlgorithm.ES384, new Dictionary <string, object> { { "x5u", b64Key } }); response.token = jwt; _session.SendPackage(response); if (Log.IsDebugEnabled) { Log.Warn($"Encryption enabled for {_session.Username}"); } } } } if (!_session.CryptoContext.UseEncryption) { _session.MessageHandler.HandleMcpeClientToServerHandshake(null); } } catch (Exception e) { Log.Error("Decrypt", e); } }
internal void HandlePackage(Package message, PlayerNetworkSession playerSession) { if (message == null) { return; } TraceReceive(message); if (typeof(UnknownPackage) == message.GetType()) { UnknownPackage packet = (UnknownPackage)message; Log.Warn($"Received unknown package 0x{message.Id:X2}\n{Package.HexDump(packet.Message)}"); return; } if (typeof(McpeBatch) == message.GetType()) { McpeBatch batch = (McpeBatch)message; var messages = new List <Package>(); // Get bytes byte[] payload = batch.payload; // Decompress bytes MemoryStream stream = new MemoryStream(payload); if (stream.ReadByte() != 0x78) { throw new InvalidDataException("Incorrect ZLib header. Expected 0x78 0x9C"); } stream.ReadByte(); using (var defStream2 = new DeflateStream(stream, CompressionMode.Decompress, false)) { // Get actual package out of bytes MemoryStream destination = MiNetServer.MemoryStreamManager.GetStream(); defStream2.CopyTo(destination); destination.Position = 0; NbtBinaryReader reader = new NbtBinaryReader(destination, true); int len = reader.ReadInt32(); byte[] internalBuffer = reader.ReadBytes(len); //byte[] internalBuffer = destination.ToArray(); messages.Add(PackageFactory.CreatePackage(internalBuffer[0], internalBuffer) ?? new UnknownPackage(internalBuffer[0], internalBuffer)); if (destination.Length > destination.Position) { throw new Exception("Have more data"); } } foreach (var msg in messages) { msg.DatagramSequenceNumber = batch.DatagramSequenceNumber; msg.OrderingChannel = batch.OrderingChannel; msg.OrderingIndex = batch.OrderingIndex; HandlePackage(msg, playerSession); msg.PutPool(); } return; } Player player = playerSession.Player; if (player != null) { player.HandlePackage(message); } }
private void OnBatch(Package message) { McpeBatch batch = (McpeBatch) message; var messages = new List<Package>(); // Get bytes byte[] payload = batch.payload; // Decompress bytes MemoryStream stream = new MemoryStream(payload); if (stream.ReadByte() != 0x78) { throw new InvalidDataException("Incorrect ZLib header. Expected 0x78 0x9C"); } stream.ReadByte(); using (var defStream2 = new DeflateStream(stream, CompressionMode.Decompress, false)) { // Get actual package out of bytes MemoryStream destination = new MemoryStream(); defStream2.CopyTo(destination); destination.Position = 0; NbtBinaryReader reader = new NbtBinaryReader(destination, true); do { int len = reader.ReadInt32(); byte[] internalBuffer = reader.ReadBytes(len); messages.Add(PackageFactory.CreatePackage(internalBuffer[0], internalBuffer) ?? new UnknownPackage(internalBuffer[0], internalBuffer)); } while (destination.Position < destination.Length); } foreach (var msg in messages) { msg.DatagramSequenceNumber = batch.DatagramSequenceNumber; msg.OrderingChannel = batch.OrderingChannel; msg.OrderingIndex = batch.OrderingIndex; HandlePackage(msg); msg.PutPool(); } }
public static ChunkColumn DecodeChunkColumn(int subChunkCount, byte[] buffer, BlockPalette bedrockPalette = null, HashSet <BlockStateContainer> internalBlockPallet = null) { lock (_chunkRead) { var stream = new MemoryStream(buffer); { var defStream = new NbtBinaryReader(stream, true); if (subChunkCount < 1) { Log.Warn("Nothing to read"); return(null); } Log.Debug($"Reading {subChunkCount} sections"); var chunkColumn = new ChunkColumn(false); for (int chunkIndex = 0; chunkIndex < subChunkCount; chunkIndex++) { int version = defStream.ReadByte(); int storageSize = defStream.ReadByte(); var subChunk = chunkColumn[chunkIndex]; for (int storageIndex = 0; storageIndex < storageSize; storageIndex++) { int bitsPerBlock = defStream.ReadByte() >> 1; int blocksPerWord = (int)Math.Floor(32f / bitsPerBlock); int wordsPerChunk = (int)Math.Ceiling(4096f / blocksPerWord); Log.Debug($"New section {chunkIndex}, " + $"version={version}, " + $"storageSize={storageSize}, " + $"storageIndex={storageIndex}, " + $"bitsPerBlock={bitsPerBlock}, " + $"noBlocksPerWord={blocksPerWord}, " + $"wordCount={wordsPerChunk}, " + $""); long jumpPos = stream.Position; stream.Seek(wordsPerChunk * 4, SeekOrigin.Current); int paletteCount = VarInt.ReadSInt32(stream); var palette = new int[paletteCount]; for (int j = 0; j < paletteCount; j++) { int runtimeId = VarInt.ReadSInt32(stream); if (bedrockPalette == null || internalBlockPallet == null) { continue; } palette[j] = GetServerRuntimeId(bedrockPalette, internalBlockPallet, runtimeId); } long afterPos = stream.Position; stream.Position = jumpPos; int position = 0; for (int w = 0; w < wordsPerChunk; w++) { uint word = defStream.ReadUInt32(); for (int block = 0; block < blocksPerWord; block++) { if (position >= 4096) { continue; } uint state = (uint)((word >> ((position % blocksPerWord) * bitsPerBlock)) & ((1 << bitsPerBlock) - 1)); int x = (position >> 8) & 0xF; int y = position & 0xF; int z = (position >> 4) & 0xF; int runtimeId = palette[state]; if (storageIndex == 0) { subChunk.SetBlockByRuntimeId(x, y, z, (int)runtimeId); } else { subChunk.SetLoggedBlockByRuntimeId(x, y, z, (int)runtimeId); } position++; } } stream.Position = afterPos; } } if (defStream.Read(chunkColumn.biomeId, 0, 256) != 256) { Log.Error($"Out of data biomeId"); } //Log.Debug($"biomeId:\n{Package.HexDump(chunk.biomeId)}"); //if (stream.Position >= stream.Length - 1) return chunkColumn; int borderBlock = VarInt.ReadSInt32(stream); if (borderBlock != 0) { byte[] buf = new byte[borderBlock]; int len = defStream.Read(buf, 0, borderBlock); Log.Warn($"??? Got borderblock {borderBlock}. Read {len} bytes"); Log.Debug($"{Packet.HexDump(buf)}"); for (int i = 0; i < borderBlock; i++) { int x = (buf[i] & 0xf0) >> 4; int z = buf[i] & 0x0f; Log.Debug($"x={x}, z={z}"); } } if (stream.Position < stream.Length - 1) { while (stream.Position < stream.Length) { NbtFile file = new NbtFile() { BigEndian = false, UseVarInt = true }; file.LoadFromStream(stream, NbtCompression.None); var blockEntityTag = file.RootTag; if (blockEntityTag.Name != "alex") { int x = blockEntityTag["x"].IntValue; int y = blockEntityTag["y"].IntValue; int z = blockEntityTag["z"].IntValue; chunkColumn.SetBlockEntity(new BlockCoordinates(x, y, z), (NbtCompound)file.RootTag); Log.Debug($"Blockentity:\n{file.RootTag}"); } } } if (stream.Position < stream.Length - 1) { Log.Warn($"Still have data to read\n{Packet.HexDump(defStream.ReadBytes((int) (stream.Length - stream.Position)))}"); } return(chunkColumn); } } }
public static ChunkColumn DecocedChunkColumn(byte[] buffer) { lock (_chunkRead) { MemoryStream stream = new MemoryStream(buffer); { NbtBinaryReader defStream = new NbtBinaryReader(stream, true); Log.Debug("New chunk column"); int count = defStream.ReadByte(); if (count < 1) { Log.Warn("Nothing to read"); return(null); } Log.Debug($"Reading {count} sections"); ChunkColumn chunkColumn = new ChunkColumn(); for (int s = 0; s < count; s++) { int version = defStream.ReadByte(); int storageSize = defStream.ReadByte(); for (int i = 0; i < storageSize; i++) { int bitsPerBlock = defStream.ReadByte() >> 1; int noBlocksPerWord = (int)Math.Floor(32f / bitsPerBlock); int wordCount = (int)Math.Ceiling(4096f / noBlocksPerWord); Log.Warn($"New section {s}, " + $"version={version}, " + $"storageSize={storageSize}, " + $"bitsPerBlock={bitsPerBlock}, " + $"noBlocksPerWord={noBlocksPerWord}, " + $"wordCount={wordCount}, " + $""); defStream.ReadBytes(wordCount * 4); int paletteCount = VarInt.ReadSInt32(stream); //Log.Warn($"New section {s}, " + // $"version={version}, " + // $"storageSize={storageSize}, " + // $"bitsPerBlock={bitsPerBlock}, " + // $"noBlocksPerWord={noBlocksPerWord}, " + // $"wordCount={wordCount}, " + // $"paletteCount={paletteCount}" + // $""); for (int j = 0; j < paletteCount; j++) { VarInt.ReadSInt32(stream); } } } //if (stream.Position >= stream.Length - 1) continue; byte[] ba = new byte[512]; if (defStream.Read(ba, 0, 256 * 2) != 256 * 2) { Log.Error($"Out of data height"); } Buffer.BlockCopy(ba, 0, chunkColumn.height, 0, 512); //Log.Debug($"Heights:\n{Package.HexDump(ba)}"); //if (stream.Position >= stream.Length - 1) continue; if (defStream.Read(chunkColumn.biomeId, 0, 256) != 256) { Log.Error($"Out of data biomeId"); } //Log.Debug($"biomeId:\n{Package.HexDump(chunk.biomeId)}"); if (stream.Position >= stream.Length - 1) { return(chunkColumn); } int borderBlock = VarInt.ReadSInt32(stream); if (borderBlock != 0) { byte[] buf = new byte[borderBlock]; int len = defStream.Read(buf, 0, borderBlock); Log.Warn($"??? Got borderblock {borderBlock}. Read {len} bytes"); Log.Debug($"{Packet.HexDump(buf)}"); for (int i = 0; i < borderBlock; i++) { int x = (buf[i] & 0xf0) >> 4; int z = buf[i] & 0x0f; Log.Debug($"x={x}, z={z}"); } } if (stream.Position < stream.Length - 1) { //Log.Debug($"Got NBT data\n{Package.HexDump(defStream.ReadBytes((int) (stream.Length - stream.Position)))}"); while (stream.Position < stream.Length) { NbtFile file = new NbtFile() { BigEndian = false, UseVarInt = true }; file.LoadFromStream(stream, NbtCompression.None); Log.Debug($"Blockentity: {file.RootTag}"); } } if (stream.Position < stream.Length - 1) { Log.Warn($"Still have data to read\n{Packet.HexDump(defStream.ReadBytes((int) (stream.Length - stream.Position)))}"); } return(chunkColumn); } } }
/// <summary> /// Handles the specified package. /// </summary> /// <param name="message">The package.</param> /// <param name="senderEndpoint">The sender's endpoint.</param> private void HandlePackage(Package message, IPEndPoint senderEndpoint) { if (typeof(McpeBatch) == message.GetType()) { Log.Debug("Processing Batch package"); McpeBatch batch = (McpeBatch)message; var messages = new List <Package>(); // Get bytes byte[] payload = batch.payload; // Decompress bytes MemoryStream stream = new MemoryStream(payload); if (stream.ReadByte() != 0x78) { throw new InvalidDataException("Incorrect ZLib header. Expected 0x78"); } stream.ReadByte(); using (var defStream2 = new DeflateStream(stream, CompressionMode.Decompress, false)) { // Get actual package out of bytes MemoryStream destination = new MemoryStream(); defStream2.CopyTo(destination); destination.Position = 0; NbtBinaryReader reader = new NbtBinaryReader(destination, true); do { int len = reader.ReadInt32(); byte[] internalBuffer = reader.ReadBytes(len); messages.Add(PackageFactory.CreatePackage(internalBuffer[0], internalBuffer) ?? new UnknownPackage(internalBuffer[0], internalBuffer)); } while (destination.Position < destination.Length); // throw new Exception("Have more data"); } foreach (var msg in messages) { HandlePackage(msg, senderEndpoint); msg.PutPool(); } return; } TraceReceive(message); if (typeof(UnknownPackage) == message.GetType()) { return; } if (typeof(McpeDisconnect) == message.GetType()) { McpeDisconnect msg = (McpeDisconnect)message; Log.InfoFormat("Disconnect {1}: {0}", msg.message, Username); SendDisconnectionNotification(); StopClient(); return; } if (typeof(ConnectedPing) == message.GetType()) { ConnectedPing msg = (ConnectedPing)message; SendConnectedPong(msg.sendpingtime); return; } if (typeof(McpeFullChunkData) == message.GetType()) { //McpeFullChunkData msg = (McpeFullChunkData) message; //ChunkColumn chunk = ClientUtils.DecocedChunkColumn(msg.chunkData); //if (chunk != null) //{ // Log.DebugFormat("Chunk X={0}", chunk.x); // Log.DebugFormat("Chunk Z={0}", chunk.z); // //ClientUtils.SaveChunkToAnvil(chunk); //} return; } if (typeof(ConnectionRequestAccepted) == message.GetType()) { Thread.Sleep(50); SendNewIncomingConnection(); //_connectedPingTimer = new Timer(state => SendConnectedPing(), null, 1000, 1000); Thread.Sleep(50); SendLogin(Username); return; } if (typeof(McpeSetSpawnPosition) == message.GetType()) { McpeSetSpawnPosition msg = (McpeSetSpawnPosition)message; _spawn = new Vector3(msg.x, msg.y, msg.z); _level.SpawnX = (int)_spawn.X; _level.SpawnY = (int)_spawn.Y; _level.SpawnZ = (int)_spawn.Z; return; } if (typeof(McpeStartGame) == message.GetType()) { McpeStartGame msg = (McpeStartGame)message; _entityId = msg.entityId; _spawn = new Vector3(msg.x, msg.y, msg.z); _level.LevelName = "Default"; _level.Version = 19133; _level.GameType = msg.gamemode; //ClientUtils.SaveLevel(_level); return; } if (typeof(McpeTileEvent) == message.GetType()) { McpeTileEvent msg = (McpeTileEvent)message; Log.DebugFormat("X: {0}", msg.x); Log.DebugFormat("Y: {0}", msg.y); Log.DebugFormat("Z: {0}", msg.z); Log.DebugFormat("Case 1: {0}", msg.case1); Log.DebugFormat("Case 2: {0}", msg.case2); return; } if (typeof(McpeAddEntity) == message.GetType()) { McpeAddEntity msg = (McpeAddEntity)message; Log.DebugFormat("Entity ID: {0}", msg.entityId); Log.DebugFormat("Entity Type: {0}", msg.entityType); Log.DebugFormat("X: {0}", msg.x); Log.DebugFormat("Y: {0}", msg.y); Log.DebugFormat("Z: {0}", msg.z); Log.DebugFormat("Yaw: {0}", msg.yaw); Log.DebugFormat("Pitch: {0}", msg.pitch); Log.DebugFormat("Velocity X: {0}", msg.speedX); Log.DebugFormat("Velocity Y: {0}", msg.speedY); Log.DebugFormat("Velocity Z: {0}", msg.speedZ); //Log.DebugFormat("Metadata: {0}", msg.metadata.ToString()); //Log.DebugFormat("Links count: {0}", msg.links); return; } if (typeof(McpeSetEntityData) == message.GetType()) { McpeSetEntityData msg = (McpeSetEntityData)message; Log.DebugFormat("Entity ID: {0}", msg.entityId); MetadataDictionary metadata = msg.metadata; Log.DebugFormat("Metadata: {0}", metadata.ToString()); return; } if (typeof(McpeMovePlayer) == message.GetType()) { //McpeMovePlayer msg = (McpeMovePlayer) message; //Log.DebugFormat("Entity ID: {0}", msg.entityId); //CurrentLocation = new PlayerLocation(msg.x, msg.y + 10, msg.z); //SendMcpeMovePlayer(); return; } if (typeof(McpeUpdateBlock) == message.GetType()) { McpeUpdateBlock msg = (McpeUpdateBlock)message; Log.DebugFormat("No of Blocks: {0}", msg.blocks.Count); return; } if (typeof(McpeLevelEvent) == message.GetType()) { McpeLevelEvent msg = (McpeLevelEvent)message; Log.DebugFormat("Event ID: {0}", msg.eventId); Log.DebugFormat("X: {0}", msg.x); Log.DebugFormat("Y: {0}", msg.y); Log.DebugFormat("Z: {0}", msg.z); Log.DebugFormat("Data: {0}", msg.data); return; } if (typeof(McpeContainerSetContent) == message.GetType()) { McpeContainerSetContent msg = (McpeContainerSetContent)message; Log.DebugFormat("Window ID: 0x{0:x2}, Count: {1}", msg.windowId, msg.slotData.Count); var slots = msg.slotData.GetValues(); foreach (var entry in slots) { MetadataSlot slot = (MetadataSlot)entry; //Log.DebugFormat(" - Id: {0}, Metadata: {1}, Count: {2}", slot.Value.Item.Id, slot.Value.Item.Metadata, slot.Value.Count); } return; } if (typeof(McpeCraftingData) == message.GetType()) { string fileName = Path.GetTempPath() + "Recipes_" + Guid.NewGuid() + ".txt"; Log.Info("Writing recipes to filename: " + fileName); FileStream file = File.OpenWrite(fileName); McpeCraftingData msg = (McpeCraftingData)message; IndentedTextWriter writer = new IndentedTextWriter(new StreamWriter(file)); writer.WriteLine("static RecipeManager()"); writer.WriteLine("{"); writer.Indent++; writer.WriteLine("Recipes = new Recipes"); writer.WriteLine("{"); writer.Indent++; foreach (Recipe recipe in msg.recipes) { ShapelessRecipe shapelessRecipe = recipe as ShapelessRecipe; if (shapelessRecipe != null) { writer.WriteLine(string.Format("new ShapelessRecipe(new ItemStack(ItemFactory.GetItem({0}, {1}), {2}),", shapelessRecipe.Result.Id, shapelessRecipe.Result.Metadata, shapelessRecipe.Result.Count)); writer.Indent++; writer.WriteLine("new List<ItemStack>"); writer.WriteLine("{"); writer.Indent++; foreach (var itemStack in shapelessRecipe.Input) { writer.WriteLine(string.Format("new ItemStack(ItemFactory.GetItem({0}, {1}), {2}),", itemStack.Id, itemStack.Metadata, itemStack.Count)); } writer.Indent--; writer.WriteLine("}),"); writer.Indent--; continue; } ShapedRecipe shapedRecipe = recipe as ShapedRecipe; if (shapedRecipe != null) { writer.WriteLine(string.Format("new ShapedRecipe({0}, {1}, new ItemStack(ItemFactory.GetItem({2}, {3}), {4}),", shapedRecipe.Width, shapedRecipe.Height, shapedRecipe.Result.Id, shapedRecipe.Result.Metadata, shapedRecipe.Result.Count)); writer.Indent++; writer.WriteLine("new Item[]"); writer.WriteLine("{"); writer.Indent++; foreach (Item item in shapedRecipe.Input) { writer.WriteLine(string.Format("ItemFactory.GetItem({0}, {1}),", item.Id, item.Metadata)); } writer.Indent--; writer.WriteLine("}),"); writer.Indent--; continue; } } writer.WriteLine("};"); writer.Indent--; writer.WriteLine("}"); writer.Indent--; writer.Flush(); file.Close(); Environment.Exit(0); return; } }
protected void DecodeCertMono(McpeLogin message) { byte[] buffer = message.payload; if (message.payload.Length != buffer.Length) { Log.Debug($"Wrong lenght {message.payload.Length} != {message.payload.Length}"); throw new Exception($"Wrong lenght {message.payload.Length} != {message.payload.Length}"); } if (Log.IsDebugEnabled) { Log.Debug("Lenght: " + message.payload.Length + ", Message: " + buffer.EncodeBase64()); } string certificateChain; string skinData; try { var destination = new MemoryStream(buffer); destination.Position = 0; NbtBinaryReader reader = new NbtBinaryReader(destination, false); var countCertData = reader.ReadInt32(); certificateChain = Encoding.UTF8.GetString(reader.ReadBytes(countCertData)); if (Log.IsDebugEnabled) { Log.Debug($"Certificate Chain (Lenght={countCertData})\n{certificateChain}"); } var countSkinData = reader.ReadInt32(); skinData = Encoding.UTF8.GetString(reader.ReadBytes(countSkinData)); if (Log.IsDebugEnabled) { Log.Debug($"Skin data (Lenght={countSkinData})\n{skinData}"); } } catch (Exception e) { Log.Error("Parsing login", e); return; } try { { IDictionary <string, dynamic> headers = JWT.Headers(skinData); dynamic payload = JObject.Parse(JWT.Payload(skinData)); if (Log.IsDebugEnabled) { Log.Debug($"Skin JWT Header: {string.Join(";", headers)}"); } if (Log.IsDebugEnabled) { Log.Debug($"Skin JWT Payload:\n{payload.ToString()}"); } try { _playerInfo.ClientId = payload.ClientRandomId; _playerInfo.CurrentInputMode = payload.CurrentInputMode; _playerInfo.DefaultInputMode = payload.DefaultInputMode; _playerInfo.DeviceModel = payload.DeviceModel; _playerInfo.DeviceOS = payload.DeviceOS; _playerInfo.GameVersion = payload.GameVersion; _playerInfo.GuiScale = payload.GuiScale; _playerInfo.LanguageCode = payload.LanguageCode; _playerInfo.ServerAddress = payload.ServerAddress; _playerInfo.UIProfile = payload.UIProfile; _playerInfo.Skin = new Skin() { CapeData = Convert.FromBase64String((string)payload.CapeData), SkinId = payload.SkinId, SkinData = Convert.FromBase64String((string)payload.SkinData), SkinGeometryName = payload.SkinGeometryName, SkinGeometry = Encoding.UTF8.GetString(Convert.FromBase64String((string)payload.SkinGeometry)), }; Log.Warn($"Cape data lenght={_playerInfo.Skin.CapeData.Length}"); } catch (Exception e) { Log.Error("Parsing skin data", e); } } //var chainArray = chain.ToArray(); string validationKey = null; string identityPublicKey = null; //if (!isMono) { dynamic json = JObject.Parse(certificateChain); if (Log.IsDebugEnabled) { Log.Debug($"Certificate JSON:\n{json}"); } JArray chain = json.chain; foreach (JToken token in chain) { IDictionary <string, dynamic> headers = JWT.Headers(token.ToString()); if (Log.IsDebugEnabled) { Log.Debug("Raw chain element:\n" + token.ToString()); Log.Debug($"JWT Header: {string.Join(";", headers)}"); dynamic jsonPayload = JObject.Parse(JWT.Payload(token.ToString())); Log.Debug($"JWT Payload:\n{jsonPayload}"); } // Mojang root x5u cert (string): MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAE8ELkixyLcwlZryUQcu1TvPOmI2B7vX83ndnWRUaXm74wFfa5f/lwQNTfrLVHa2PmenpGI6JhIMUJaWZrjmMj90NoKNFSNBuKdm8rYiXsfaz3K36x/1U26HpG0ZxK/V1V if (!headers.ContainsKey("x5u")) { continue; } string x5u = headers["x5u"]; if (identityPublicKey == null) { if (CertificateData.MojangRootKey.Equals(x5u, StringComparison.InvariantCultureIgnoreCase)) { Log.Debug("Key is ok, and got Mojang root"); } else if (chain.Count > 1) { Log.Debug("Got client cert (client root)"); continue; } else if (chain.Count == 1) { Log.Debug("Selfsigned chain"); } } else if (identityPublicKey.Equals(x5u)) { Log.Debug("Derived Key is ok"); } // Validate var key = PublicKeyFactory.CreateKey(x5u.DecodeBase64Url()); CertificateData data = CryptoUtils.Decode(token.ToString(), key); if (data != null) { identityPublicKey = data.IdentityPublicKey; if (Log.IsDebugEnabled) { Log.Debug("Decoded token success"); } if (CertificateData.MojangRootKey.Equals(x5u, StringComparison.InvariantCultureIgnoreCase)) { Log.Debug("Got Mojang key. Is valid = " + data.CertificateAuthority); validationKey = data.IdentityPublicKey; } else if (validationKey != null && validationKey.Equals(x5u, StringComparison.InvariantCultureIgnoreCase)) { _playerInfo.CertificateData = data; } else { if (data.ExtraData == null) { continue; } // Self signed, make sure they don't fake XUID if (data.ExtraData.Xuid != null) { Log.Warn("Received fake XUID from " + data.ExtraData.DisplayName); data.ExtraData.Xuid = null; } _playerInfo.CertificateData = data; } } else { Log.Error("Not a valid Identity Public Key for decoding"); } } } //TODO: Implement disconnect here _playerInfo.Username = _playerInfo.CertificateData.ExtraData.DisplayName; _session.Username = _playerInfo.Username; string identity = _playerInfo.CertificateData.ExtraData.Identity; if (Log.IsDebugEnabled) { Log.Debug($"Connecting user {_playerInfo.Username} with identity={identity}"); } _playerInfo.ClientUuid = new UUID(identity); bool useEncryption = (Config.GetProperty("UseEncryptionForAll", false) || (Config.GetProperty("UseEncryption", true) && !string.IsNullOrWhiteSpace(_playerInfo.CertificateData.ExtraData.Xuid))); if (useEncryption) { var publicKey = PublicKeyFactory.CreateKey(_playerInfo.CertificateData.IdentityPublicKey.DecodeBase64Url()); string namedCurve = "secp384r1"; ECKeyPairGenerator pGen = new ECKeyPairGenerator(); ECKeyGenerationParameters genParam = new ECKeyGenerationParameters( SecNamedCurves.GetOid(namedCurve), new SecureRandom()); pGen.Init(genParam); AsymmetricCipherKeyPair keyPair = pGen.GenerateKeyPair(); ECDHBasicAgreement agreement = new ECDHBasicAgreement(); agreement.Init(keyPair.Private); byte[] preHash = agreement.CalculateAgreement(publicKey).ToByteArray(); byte[] prepend = Encoding.UTF8.GetBytes("RANDOM SECRET"); byte[] secret; SHA256Managed sha = new SHA256Managed(); using (var memoryStream = new MemoryStream()) { memoryStream.Write(prepend, 0, prepend.Length); memoryStream.Write(preHash, 0, preHash.Length); memoryStream.Position = 0; secret = sha.ComputeHash(memoryStream); } sha.Dispose(); //if (Log.IsDebugEnabled) Log.Debug($"SECRET KEY (b64, {secret.Length}):\n{secret.EncodeBase64()}"); { RijndaelManaged rijAlg = new RijndaelManaged { BlockSize = 128, Padding = PaddingMode.None, Mode = CipherMode.CFB, FeedbackSize = 8, Key = secret, IV = secret.Take(16).ToArray(), }; // Create a decrytor to perform the stream transform. ICryptoTransform decryptor = rijAlg.CreateDecryptor(rijAlg.Key, rijAlg.IV); MemoryStream inputStream = new MemoryStream(); CryptoStream cryptoStreamIn = new CryptoStream(inputStream, decryptor, CryptoStreamMode.Read); ICryptoTransform encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV); MemoryStream outputStream = new MemoryStream(); CryptoStream cryptoStreamOut = new CryptoStream(outputStream, encryptor, CryptoStreamMode.Write); _session.CryptoContext = new CryptoContext { UseEncryption = true, Algorithm = rijAlg, Decryptor = decryptor, Encryptor = encryptor, InputStream = inputStream, OutputStream = outputStream, CryptoStreamIn = cryptoStreamIn, CryptoStreamOut = cryptoStreamOut }; var pubKey1 = ((ECPublicKeyParameters)keyPair.Public); byte[] asn = new byte[24] { 0x30, 0x76, 0x30, 0x10, 0x6, 0x7, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x2, 0x1, 0x6, 0x5, 0x2b, 0x81, 0x4, 0x0, 0x22, 0x3, 0x62, 0x0, 0x4 }; string b64Key = asn.Concat(ConvertToNCryptEccPublicBlob(pubKey1.Q).Skip(8)).ToArray().EncodeBase64(); var handshakeJson = new HandshakeData() { salt = prepend.EncodeBase64() }; string val = CryptoUtils.Encode(handshakeJson, keyPair.Private, JwsAlgorithm.ES384, new Dictionary <string, object> { { "x5u", b64Key } }); var response = McpeServerToClientHandshake.CreateObject(); response.NoBatch = true; response.ForceClear = true; response.token = val; _session.SendPackage(response); if (Log.IsDebugEnabled) { Log.Warn($"Encryption enabled for {_session.Username}"); } } } else { _session.CryptoContext = new CryptoContext { UseEncryption = false }; _session.MessageHandler.HandleMcpeClientToServerHandshake(null); } } catch (Exception e) { Log.Error("Decrypt", e); } }
private void HandleChunk(byte[] chunkData, int cx, int cz, Action <ChunkColumn> callback) { MeasureProfiler.StartCollectingData(); var profiler = MiniProfiler.StartNew("BEToJavaColumn"); try { using (MemoryStream stream = new MemoryStream(chunkData)) { NbtBinaryReader defStream = new NbtBinaryReader(stream, true); int count = defStream.ReadByte(); if (count < 1) { Log.Warn("Nothing to read"); return; } ChunkColumn chunkColumn = new ChunkColumn(); chunkColumn.IsDirty = true; chunkColumn.X = cx; chunkColumn.Z = cz; for (int s = 0; s < count; s++) { var section = chunkColumn.Sections[s] as ChunkSection; if (section == null) { section = new ChunkSection(s, true); } int version = defStream.ReadByte(); if (version == 1 || version == 8) { int storageSize = defStream.ReadByte(); for (int storage = 0; storage < storageSize; storage++) { int paletteAndFlag = defStream.ReadByte(); bool isRuntime = (paletteAndFlag & 1) != 0; int bitsPerBlock = paletteAndFlag >> 1; int blocksPerWord = (int)Math.Floor(32f / bitsPerBlock); int wordCount = (int)Math.Ceiling(4096.0f / blocksPerWord); uint[] words = new uint[wordCount]; for (int w = 0; w < wordCount; w++) { int word = defStream.ReadInt32(); words[w] = SwapBytes((uint)word); } uint[] pallete = new uint[0]; if (isRuntime) { int palleteSize = VarInt.ReadSInt32(stream); pallete = new uint[palleteSize]; for (int pi = 0; pi < pallete.Length; pi++) { var ui = (uint)VarInt.ReadSInt32(stream); pallete[pi] = ui; } if (palleteSize == 0) { Log.Warn($"Pallete size is 0"); continue; } } int position = 0; for (int w = 0; w < wordCount; w++) { uint word = words[w]; for (int block = 0; block < blocksPerWord; block++) { if (position >= 4096) { break; // padding bytes } uint state = (uint)((word >> ((position % blocksPerWord) * bitsPerBlock)) & ((1 << bitsPerBlock) - 1)); int x = (position >> 8) & 0xF; int y = position & 0xF; int z = (position >> 4) & 0xF; if (storage == 0) { if (state >= pallete.Length) { continue; } IBlockState translated = _convertedStates.GetOrAdd(pallete[state], u => { if (_blockStateMap.TryGetValue(pallete[state], out var bs)) { var result = BlockFactory.RuntimeIdTable.FirstOrDefault(xx => xx.Name == bs.Name); if (result != null && result.Id >= 0) { var reverseMap = MiNET.Worlds.AnvilWorldProvider.Convert.FirstOrDefault(map => map.Value.Item1 == result.Id); var id = result.Id; if (reverseMap.Value != null) { id = reverseMap.Key; } var res = BlockFactory.GetBlockStateID( (int)id, (byte)bs.Data); if (AnvilWorldProvider.BlockStateMapper.TryGetValue( res, out var res2)) { var t = BlockFactory.GetBlockState(res2); t = TranslateBlockState(t, id, bs.Data); return(t); } else { Log.Info( $"Did not find anvil statemap: {result.Name}"); return(TranslateBlockState( BlockFactory.GetBlockState(result.Name), id, bs.Data)); } } return(TranslateBlockState( BlockFactory.GetBlockState(bs.Name), -1, bs.Data)); } return(null); }); if (translated != null) { section.Set(x, y, z, translated); } } else { //TODO. } position++; } if (position >= 4096) { break; } } } } else { #region OldFormat byte[] blockIds = new byte[4096]; defStream.Read(blockIds, 0, blockIds.Length); NibbleArray data = new NibbleArray(4096); defStream.Read(data.Data, 0, data.Data.Length); for (int x = 0; x < 16; x++) { for (int z = 0; z < 16; z++) { for (int y = 0; y < 16; y++) { int idx = (x << 8) + (z << 4) + y; var id = blockIds[idx]; var meta = data[idx]; IBlockState result = null; if (id > 0 && result == null) { var res = BlockFactory.GetBlockStateID(id, meta); if (AnvilWorldProvider.BlockStateMapper.TryGetValue(res, out var res2)) { var t = BlockFactory.GetBlockState(res2); t = TranslateBlockState(t, id, meta); result = t; } else { Log.Info($"Did not find anvil statemap: {result.Name}"); result = TranslateBlockState(BlockFactory.GetBlockState(res), id, meta); } } if (result == null) { var results = BlockFactory.RuntimeIdTable.Where(xx => xx.Id == id && xx.Data == meta).ToArray(); if (results.Length > 0) { result = TranslateBlockState( BlockFactory.GetBlockState((uint)results[0].RuntimeId), id, meta); } } if (result != null) { section.Set(x, y, z, result); } } } } #endregion } if (UseAlexChunks) { // Log.Info($"Alex chunk!"); var rawSky = new Utils.NibbleArray(4096); defStream.Read(rawSky.Data, 0, rawSky.Data.Length); var rawBlock = new Utils.NibbleArray(4096); defStream.Read(rawBlock.Data, 0, rawBlock.Data.Length); for (int x = 0; x < 16; x++) { for (int y = 0; y < 16; y++) { for (int z = 0; z < 16; z++) { var peIndex = (x * 256) + (z * 16) + y; var sky = rawSky[peIndex]; var block = rawBlock[peIndex]; var idx = y << 8 | z << 4 | x; section.SkyLight[idx] = sky; section.BlockLight[idx] = block; } } } } section.RemoveInvalidBlocks(); section.IsDirty = true; //Make sure the section is saved. chunkColumn.Sections[s] = section; } byte[] ba = new byte[512]; if (defStream.Read(ba, 0, 256 * 2) != 256 * 2) { Log.Error($"Out of data height"); } Buffer.BlockCopy(ba, 0, chunkColumn.Height, 0, 512); int[] biomeIds = new int[256]; for (int i = 0; i < biomeIds.Length; i++) { biomeIds[i] = defStream.ReadByte(); } chunkColumn.BiomeId = biomeIds; if (stream.Position >= stream.Length - 1) { callback?.Invoke(chunkColumn); return; } int borderBlock = VarInt.ReadSInt32(stream); if (borderBlock > 0) { byte[] buf = new byte[borderBlock]; int len = defStream.Read(buf, 0, borderBlock); } if (stream.Position < stream.Length - 1) { while (stream.Position < stream.Length) { NbtFile file = new NbtFile() { BigEndian = false, UseVarInt = true }; file.LoadFromStream(stream, NbtCompression.None); } } if (stream.Position < stream.Length - 1) { Log.Warn( $"Still have data to read\n{Packet.HexDump(defStream.ReadBytes((int) (stream.Length - stream.Position)))}"); } //Done processing this chunk, send to world callback?.Invoke(chunkColumn); } } catch (Exception ex) { Log.Error($"Exception in chunk loading: {ex.ToString()}"); } finally { profiler?.Stop(); MeasureProfiler.SaveData(); } }
internal void HandlePackage(Package message, PlayerNetworkSession playerSession) { Player player = playerSession.Player; if (message == null) { return; } if (typeof(McpeWrapper) == message.GetType()) { McpeWrapper batch = (McpeWrapper)message; // Get bytes byte[] payload = batch.payload; if (playerSession.CryptoContext != null && Config.GetProperty("UseEncryption", true)) { payload = CryptoUtils.Decrypt(payload, playerSession.CryptoContext); } //if (Log.IsDebugEnabled) // Log.Debug($"0x{payload[0]:x2}\n{Package.HexDump(payload)}"); var msg = PackageFactory.CreatePackage(payload[0], payload, "mcpe") ?? new UnknownPackage(payload[0], payload); HandlePackage(msg, playerSession); msg.PutPool(); return; } if (typeof(UnknownPackage) == message.GetType()) { UnknownPackage packet = (UnknownPackage)message; Log.Warn($"Received unknown package 0x{message.Id:X2}\n{Package.HexDump(packet.Message)}"); return; } if (typeof(McpeBatch) == message.GetType()) { Log.Debug("Handle MCPE batch message"); McpeBatch batch = (McpeBatch)message; var messages = new List <Package>(); // Get bytes byte[] payload = batch.payload; // Decompress bytes MemoryStream stream = new MemoryStream(payload); if (stream.ReadByte() != 0x78) { throw new InvalidDataException("Incorrect ZLib header. Expected 0x78 0x9C"); } stream.ReadByte(); using (var defStream2 = new DeflateStream(stream, CompressionMode.Decompress, false)) { // Get actual package out of bytes MemoryStream destination = MiNetServer.MemoryStreamManager.GetStream(); defStream2.CopyTo(destination); destination.Position = 0; NbtBinaryReader reader = new NbtBinaryReader(destination, true); while (destination.Position < destination.Length) { int len = reader.ReadInt32(); byte[] internalBuffer = reader.ReadBytes(len); //if (Log.IsDebugEnabled) // Log.Debug($"0x{internalBuffer[0]:x2}\n{Package.HexDump(internalBuffer)}"); messages.Add(PackageFactory.CreatePackage(internalBuffer[0], internalBuffer, "mcpe") ?? new UnknownPackage(internalBuffer[0], internalBuffer)); } if (destination.Length > destination.Position) { throw new Exception("Have more data"); } } foreach (var msg in messages) { msg.DatagramSequenceNumber = batch.DatagramSequenceNumber; msg.OrderingChannel = batch.OrderingChannel; msg.OrderingIndex = batch.OrderingIndex; HandlePackage(msg, playerSession); msg.PutPool(); } return; } if (player != null) { player.HandlePackage(message); } }
public static ChunkColumn DecocedChunkColumn(byte[] buffer) { MemoryStream stream = new MemoryStream(buffer); { NbtBinaryReader defStream = new NbtBinaryReader(stream, true); ChunkColumn chunk = new ChunkColumn(); //chunk.x = IPAddress.NetworkToHostOrder(defStream.ReadInt32()); //chunk.z = IPAddress.NetworkToHostOrder(defStream.ReadInt32()); int chunkSize = 16 * 16 * 128; defStream.Read(chunk.blocks, 0, chunkSize); defStream.Read(chunk.metadata.Data, 0, chunkSize / 2); defStream.Read(chunk.skylight.Data, 0, chunkSize / 2); defStream.Read(chunk.blocklight.Data, 0, chunkSize / 2); //Log.Debug($"skylight.Data:\n{Package.HexDump(chunk.skylight.Data, 64)}"); //Log.Debug($"blocklight.Data:\n{Package.HexDump(chunk.blocklight.Data)}"); defStream.Read(chunk.height, 0, 256); //Log.Debug($"Heights:\n{Package.HexDump(chunk.height)}"); byte[] ints = new byte[256 * 4]; defStream.Read(ints, 0, ints.Length); //Log.Debug($"biomeColor (pre):\n{Package.HexDump(ints)}"); int j = 0; for (int i = 0; i < ints.Length; i = i + 4) { chunk.biomeId[j] = ints[i]; chunk.biomeColor[j++] = BitConverter.ToInt32(new[] { (byte)0, ints[i + 1], ints[i + 2], ints[i + 3] }, 0); } //Log.Debug($"biomeId (post):\n{Package.HexDump(chunk.biomeId)}"); if (stream.Position >= stream.Length - 1) { return(chunk); } //return chunk; int extraSize = defStream.ReadInt16(); if (extraSize != 0) { Log.Debug($"Got extradata\n{Package.HexDump(defStream.ReadBytes(extraSize))}"); } if (stream.Position >= stream.Length - 1) { return(chunk); } //Log.Debug($"Got NBT data\n{Package.HexDump(defStream.ReadBytes((int) (stream.Length - stream.Position)))}"); while (stream.Position < stream.Length) { NbtFile file = new NbtFile() { BigEndian = false, UseVarInt = true }; file.LoadFromStream(stream, NbtCompression.None); //Log.Debug($"Blockentity: {file.RootTag}"); } return(chunk); } }
protected void DecodeCert(McpeLogin message) { _playerInfo = new PlayerInfo(); // Get bytes byte[] buffer = message.payload; //Log.Debug($"Unknown byte in login packet is: {message.unknown}"); if (message.payload.Length != buffer.Length) { Log.Debug($"Wrong lenght {message.payload.Length} != {message.payload.Length}"); throw new Exception($"Wrong lenght {message.payload.Length} != {message.payload.Length}"); } // Decompress bytes Log.Debug("Lenght: " + message.payload.Length + ", Message: " + Convert.ToBase64String(buffer)); MemoryStream stream = new MemoryStream(buffer); if (stream.ReadByte() != 0x78) { throw new InvalidDataException("Incorrect ZLib header. Expected 0x78 0x9C"); } stream.ReadByte(); string certificateChain; string skinData; using (var defStream2 = new DeflateStream(stream, CompressionMode.Decompress, false)) { // Get actual package out of bytes using (MemoryStream destination = MiNetServer.MemoryStreamManager.GetStream()) { defStream2.CopyTo(destination); destination.Position = 0; NbtBinaryReader reader = new NbtBinaryReader(destination, false); try { var countCertData = reader.ReadInt32(); Log.Debug("Count cert: " + countCertData); certificateChain = Encoding.UTF8.GetString(reader.ReadBytes(countCertData)); Log.Debug("Decompressed certificateChain " + certificateChain); var countSkinData = reader.ReadInt32(); Log.Debug("Count skin: " + countSkinData); skinData = Encoding.UTF8.GetString(reader.ReadBytes(countSkinData)); Log.Debug("Decompressed skinData" + skinData); } catch (Exception e) { Log.Error("Parsing login", e); return; } } } try { { if (Log.IsDebugEnabled) { Log.Debug("Input SKIN string: " + skinData); } IDictionary <string, dynamic> headers = JWT.Headers(skinData); dynamic payload = JObject.Parse(JWT.Payload(skinData)); if (Log.IsDebugEnabled) { Log.Debug($"Skin JWT Header: {string.Join(";", headers)}"); } if (Log.IsDebugEnabled) { Log.Debug($"Skin JWT Payload:\n{payload.ToString()}"); } // Skin JWT Payload: //{ // "ADRole": 2, // "ClientRandomId": -1256727416, // "CurrentInputMode": 2, // "DefaultInputMode": 2, // "DeviceModel": "SAMSUNG GT-P5210", // "DeviceOS": 1, // "GameVersion": "1.0.3.0", // "GuiScale": 0, // "ServerAddress": "192.168.0.3:19132", // "SkinData": 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// "SkinId": "Standard_Custom", // "TenantId": "", // "UIProfile": 1 //} try { _playerInfo.ADRole = payload.ADRole; _playerInfo.ClientId = payload.ClientRandomId; _playerInfo.CurrentInputMode = payload.CurrentInputMode; _playerInfo.DefaultInputMode = payload.DefaultInputMode; _playerInfo.DeviceModel = payload.DeviceModel; _playerInfo.DeviceOS = payload.DeviceOS; _playerInfo.GameVersion = payload.GameVersion; _playerInfo.GuiScale = payload.GuiScale; _playerInfo.ServerAddress = payload.ServerAddress; _playerInfo.UIProfile = payload.UIProfile; _playerInfo.Skin = new Skin() { SkinType = payload.SkinId, Texture = Convert.FromBase64String((string)payload.SkinData), }; } catch (Exception e) { Log.Error("Skin info", e); } } { if (Log.IsDebugEnabled) { Log.Debug("Input JSON string: " + certificateChain); } dynamic json = JObject.Parse(certificateChain); if (Log.IsDebugEnabled) { Log.Debug($"JSON:\n{json}"); } string validationKey = null; foreach (dynamic o in json.chain) { IDictionary <string, dynamic> headers = JWT.Headers(o.ToString()); if (Log.IsDebugEnabled) { Log.Debug("Raw chain element:\n" + o.ToString()); Log.Debug($"JWT Header: {string.Join(";", headers)}"); dynamic jsonPayload = JObject.Parse(JWT.Payload(o.ToString())); Log.Debug($"JWT Payload:\n{jsonPayload}"); } // x5u cert (string): MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAE8ELkixyLcwlZryUQcu1TvPOmI2B7vX83ndnWRUaXm74wFfa5f/lwQNTfrLVHa2PmenpGI6JhIMUJaWZrjmMj90NoKNFSNBuKdm8rYiXsfaz3K36x/1U26HpG0ZxK/V1V if (headers.ContainsKey("x5u")) { string certString = headers["x5u"]; if (Log.IsDebugEnabled) { Log.Debug($"x5u cert (string): {certString}"); ECDiffieHellmanPublicKey publicKey = CryptoUtils.CreateEcDiffieHellmanPublicKey(certString); Log.Debug($"Cert:\n{publicKey.ToXmlString()}"); } // Validate CngKey newKey = CryptoUtils.ImportECDsaCngKeyFromString(certString); CertificateData data = JWT.Decode <CertificateData>(o.ToString(), newKey); if (data != null) { if (Log.IsDebugEnabled) { Log.Debug("Decoded token success"); } if (CertificateData.MojangRootKey.Equals(certString, StringComparison.InvariantCultureIgnoreCase)) { Log.Debug("Got Mojang key. Is valid = " + data.CertificateAuthority); validationKey = data.IdentityPublicKey; } else if (validationKey != null && validationKey.Equals(certString, StringComparison.InvariantCultureIgnoreCase)) { _playerInfo.CertificateData = data; } else { if (data.ExtraData == null) { continue; } // Self signed, make sure they don't fake XUID if (data.ExtraData.Xuid != null) { Log.Warn("Received fake XUID from " + data.ExtraData.DisplayName); data.ExtraData.Xuid = null; } _playerInfo.CertificateData = data; } } else { Log.Error("Not a valid Identity Public Key for decoding"); } } } //TODO: Implement disconnect here { _playerInfo.Username = _playerInfo.CertificateData.ExtraData.DisplayName; _session.Username = _playerInfo.Username; string identity = _playerInfo.CertificateData.ExtraData.Identity; if (Log.IsDebugEnabled) { Log.Debug($"Connecting user {_playerInfo.Username} with identity={identity}"); } _playerInfo.ClientUuid = new UUID(identity); _session.CryptoContext = new CryptoContext { UseEncryption = Config.GetProperty("UseEncryptionForAll", false) || (Config.GetProperty("UseEncryption", true) && !string.IsNullOrWhiteSpace(_playerInfo.CertificateData.ExtraData.Xuid)), }; if (_session.CryptoContext.UseEncryption) { ECDiffieHellmanPublicKey publicKey = CryptoUtils.CreateEcDiffieHellmanPublicKey(_playerInfo.CertificateData.IdentityPublicKey); if (Log.IsDebugEnabled) { Log.Debug($"Cert:\n{publicKey.ToXmlString()}"); } // Create shared shared secret ECDiffieHellmanCng ecKey = new ECDiffieHellmanCng(384); ecKey.HashAlgorithm = CngAlgorithm.Sha256; ecKey.KeyDerivationFunction = ECDiffieHellmanKeyDerivationFunction.Hash; ecKey.SecretPrepend = Encoding.UTF8.GetBytes("RANDOM SECRET"); // Server token byte[] secret = ecKey.DeriveKeyMaterial(publicKey); if (Log.IsDebugEnabled) { Log.Debug($"SECRET KEY (b64):\n{Convert.ToBase64String(secret)}"); } { RijndaelManaged rijAlg = new RijndaelManaged { BlockSize = 128, Padding = PaddingMode.None, Mode = CipherMode.CFB, FeedbackSize = 8, Key = secret, IV = secret.Take(16).ToArray(), }; // Create a decrytor to perform the stream transform. ICryptoTransform decryptor = rijAlg.CreateDecryptor(rijAlg.Key, rijAlg.IV); MemoryStream inputStream = new MemoryStream(); CryptoStream cryptoStreamIn = new CryptoStream(inputStream, decryptor, CryptoStreamMode.Read); ICryptoTransform encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV); MemoryStream outputStream = new MemoryStream(); CryptoStream cryptoStreamOut = new CryptoStream(outputStream, encryptor, CryptoStreamMode.Write); _session.CryptoContext.Algorithm = rijAlg; _session.CryptoContext.Decryptor = decryptor; _session.CryptoContext.Encryptor = encryptor; _session.CryptoContext.InputStream = inputStream; _session.CryptoContext.OutputStream = outputStream; _session.CryptoContext.CryptoStreamIn = cryptoStreamIn; _session.CryptoContext.CryptoStreamOut = cryptoStreamOut; } var response = McpeServerExchange.CreateObject(); response.NoBatch = true; response.ForceClear = true; response.serverPublicKey = Convert.ToBase64String(ecKey.PublicKey.GetDerEncoded()); response.tokenLength = (short)ecKey.SecretPrepend.Length; response.token = ecKey.SecretPrepend; _session.SendPackage(response); if (Log.IsDebugEnabled) { Log.Warn($"Encryption enabled for {_session.Username}"); } } } } if (!_session.CryptoContext.UseEncryption) { _session.MessageHandler.HandleMcpeClientMagic(null); } } catch (Exception e) { Log.Error("Decrypt", e); } }
protected void DecodeCert(McpeLogin message) { _playerInfo = new PlayerInfo(); // Get bytes byte[] buffer = message.payload; //Log.Debug($"Unknown byte in login packet is: {message.unknown}"); if (message.payload.Length != buffer.Length) { Log.Debug($"Wrong lenght {message.payload.Length} != {message.payload.Length}"); throw new Exception($"Wrong lenght {message.payload.Length} != {message.payload.Length}"); } // Decompress bytes Log.Debug("Lenght: " + message.payload.Length + ", Message: " + Convert.ToBase64String(buffer)); //MemoryStream stream = new MemoryStream(buffer); //if (stream.ReadByte() != 0x78) //{ // throw new InvalidDataException("Incorrect ZLib header. Expected 0x78 0x9C"); //} //stream.ReadByte(); string certificateChain; string skinData; //using (var defStream2 = new DeflateStream(stream, CompressionMode.Decompress, false)) { // Get actual package out of bytes //using (MemoryStream destination = MiNetServer.MemoryStreamManager.GetStream()) { //defStream2.CopyTo(destination); var destination = new MemoryStream(buffer); destination.Position = 0; NbtBinaryReader reader = new NbtBinaryReader(destination, false); try { var countCertData = reader.ReadInt32(); Log.Debug("Count cert: " + countCertData); certificateChain = Encoding.UTF8.GetString(reader.ReadBytes(countCertData)); Log.Debug("Decompressed certificateChain " + certificateChain); var countSkinData = reader.ReadInt32(); Log.Debug("Count skin: " + countSkinData); skinData = Encoding.UTF8.GetString(reader.ReadBytes(countSkinData)); Log.Debug("Decompressed skinData" + skinData); } catch (Exception e) { Log.Error("Parsing login", e); return; } } } try { { if (Log.IsDebugEnabled) { Log.Debug("Input SKIN string: " + skinData); } IDictionary <string, dynamic> headers = JWT.Headers(skinData); dynamic payload = JObject.Parse(JWT.Payload(skinData)); if (Log.IsDebugEnabled) { Log.Debug($"Skin JWT Header: {string.Join(";", headers)}"); } if (Log.IsDebugEnabled) { Log.Debug($"Skin JWT Payload:\n{payload.ToString()}"); } // Skin JWT Payload: //{ // "ADRole": 2, // "ClientRandomId": 1423700530444426768, // "CurrentInputMode": 1, // "DefaultInputMode": 1, // "DeviceModel": "ASUSTeK COMPUTER INC. N550JK", // "DeviceOS": 7, // "GameVersion": "1.1.0", // "GuiScale": 0, // "LanguageCode": "en_US", // "ServerAddress": "192.168.0.3:19132", // "SkinData": 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// "SkinId": "Standard_Custom", // "TenantId": "", // "UIProfile": 0 //} try { _playerInfo.ADRole = payload.ADRole; _playerInfo.ClientId = payload.ClientRandomId; _playerInfo.CurrentInputMode = payload.CurrentInputMode; _playerInfo.DefaultInputMode = payload.DefaultInputMode; _playerInfo.DeviceModel = payload.DeviceModel; _playerInfo.DeviceOS = payload.DeviceOS; _playerInfo.GameVersion = payload.GameVersion; _playerInfo.GuiScale = payload.GuiScale; _playerInfo.LanguageCode = payload.LanguageCode; _playerInfo.ServerAddress = payload.ServerAddress; _playerInfo.UIProfile = payload.UIProfile; _playerInfo.Skin = new Skin() { SkinType = payload.SkinId, Texture = Convert.FromBase64String((string)payload.SkinData), }; } catch (Exception e) { Log.Error("Skin info", e); } } { if (Log.IsDebugEnabled) { Log.Debug("Input JSON string: " + certificateChain); } dynamic json = JObject.Parse(certificateChain); if (Log.IsDebugEnabled) { Log.Debug($"JSON:\n{json}"); } string validationKey = null; foreach (dynamic o in json.chain) { IDictionary <string, dynamic> headers = JWT.Headers(o.ToString()); dynamic jsonPayload = JObject.Parse(JWT.Payload(o.ToString())); if (Log.IsDebugEnabled) { Log.Debug("Raw chain element:\n" + o.ToString()); Log.Debug($"JWT Header: {string.Join(";", headers)}"); Log.Debug($"JWT Payload:\n{jsonPayload}"); } if (jsonPayload["extraData"] == null) { continue; } _playerInfo.Username = jsonPayload["extraData"]["displayName"]; _session.Username = _playerInfo.Username; string identity = jsonPayload["extraData"]["identity"]; _playerInfo.ClientUuid = new UUID(new Guid(identity).ToByteArray()); _session.CryptoContext = new CryptoContext { UseEncryption = false }; if (jsonPayload["extraData"]["XUID"] != null) { _playerInfo.CertificateData = new CertificateData { ExtraData = new ExtraData { Xuid = jsonPayload["extraData"]["XUID"] } }; } else { _playerInfo.CertificateData = new CertificateData { ExtraData = new ExtraData { Xuid = "" } }; } } } if (!_session.CryptoContext.UseEncryption) { _session.MessageHandler.HandleMcpeClientToServerHandshake(null); } } catch (Exception e) { Log.Error("Decrypt", e); } }
internal void HandlePackage(Package message, PlayerNetworkSession playerSession) { //SignalTick(); try { if (message == null) { return; } if (typeof(UnknownPackage) == message.GetType()) { UnknownPackage packet = (UnknownPackage)message; if (Log.IsDebugEnabled) { Log.Warn($"Received unknown package 0x{message.Id:X2}\n{Package.HexDump(packet.Message)}"); } message.PutPool(); return; } if (typeof(McpeWrapper) == message.GetType()) { McpeWrapper batch = (McpeWrapper)message; var messages = new List <Package>(); // Get bytes byte[] payload = batch.payload; if (playerSession.CryptoContext != null && playerSession.CryptoContext.UseEncryption) { payload = CryptoUtils.Decrypt(payload, playerSession.CryptoContext); } // Decompress bytes MemoryStream stream = new MemoryStream(payload); if (stream.ReadByte() != 0x78) { throw new InvalidDataException("Incorrect ZLib header. Expected 0x78 0x9C"); } stream.ReadByte(); using (var defStream2 = new DeflateStream(stream, CompressionMode.Decompress, false)) { // Get actual package out of bytes using (MemoryStream destination = MiNetServer.MemoryStreamManager.GetStream()) { defStream2.CopyTo(destination); destination.Position = 0; NbtBinaryReader reader = new NbtBinaryReader(destination, true); while (destination.Position < destination.Length) { //int len = reader.ReadInt32(); int len = BatchUtils.ReadLength(destination); byte[] internalBuffer = reader.ReadBytes(len); //if (Log.IsDebugEnabled) // Log.Debug($"0x{internalBuffer[0]:x2}\n{Package.HexDump(internalBuffer)}"); messages.Add(PackageFactory.CreatePackage(internalBuffer[0], internalBuffer, "mcpe") ?? new UnknownPackage(internalBuffer[0], internalBuffer)); } if (destination.Length > destination.Position) { throw new Exception("Have more data"); } } } foreach (var msg in messages) { // Temp fix for performance, take 1. var interact = msg as McpeInteract; if (interact?.actionId == 4 && interact.targetRuntimeEntityId == 0) { continue; } msg.DatagramSequenceNumber = batch.DatagramSequenceNumber; msg.Reliability = batch.Reliability; msg.ReliableMessageNumber = batch.ReliableMessageNumber; msg.OrderingChannel = batch.OrderingChannel; msg.OrderingIndex = batch.OrderingIndex; HandlePackage(msg, playerSession); } message.PutPool(); return; } MiNetServer.TraceReceive(message); if (CryptoContext != null && CryptoContext.UseEncryption) { MiNetServer.FastThreadPool.QueueUserWorkItem(delegate() { HandlePackage(MessageHandler, message as Package); message.PutPool(); }); } else { HandlePackage(MessageHandler, message); message.PutPool(); } } catch (Exception e) { Log.Error("Package handling", e); throw; } }
private void HandleChunk(bool cacheEnabled, uint subChunkCount, byte[] chunkData, int cx, int cz, Action <ChunkColumn> callback) { if (cacheEnabled) { Log.Warn($"Unsupported cache enabled!"); } bool gotLight = false; try { using (MemoryStream stream = new MemoryStream(chunkData)) { NbtBinaryReader defStream = new NbtBinaryReader(stream, true); //int count = defStream.ReadByte(); if (subChunkCount < 1) { Log.Warn("Nothing to read"); return; } ChunkColumn chunkColumn = new ChunkColumn(); chunkColumn.IsDirty = true; chunkColumn.X = cx; chunkColumn.Z = cz; for (int s = 0; s < subChunkCount; s++) { var section = chunkColumn.Sections[s] as ChunkSection; int version = defStream.ReadByte(); if (version == 1 || version == 8) { int storageSize = defStream.ReadByte(); if (section == null) { section = new ChunkSection(chunkColumn, s, true, 2); } for (int storage = 0; storage < storageSize; storage++) { int paletteAndFlag = defStream.ReadByte(); bool isRuntime = (paletteAndFlag & 1) != 0; int bitsPerBlock = paletteAndFlag >> 1; int blocksPerWord = (int)Math.Floor(32f / bitsPerBlock); int wordCount = (int)Math.Ceiling(4096.0f / blocksPerWord); uint[] words = new uint[wordCount]; for (int w = 0; w < wordCount; w++) { int word = defStream.ReadInt32(); words[w] = SwapBytes((uint)word); } uint[] pallete = new uint[0]; if (isRuntime) { int palleteSize = VarInt.ReadSInt32(stream); pallete = new uint[palleteSize]; for (int pi = 0; pi < pallete.Length; pi++) { var ui = (uint)VarInt.ReadSInt32(stream); pallete[pi] = ui; } if (palleteSize == 0) { Log.Warn($"Pallete size is 0"); continue; } } int position = 0; for (int w = 0; w < wordCount; w++) { uint word = words[w]; for (int block = 0; block < blocksPerWord; block++) { if (position >= 4096) { break; // padding bytes } uint state = (uint)((word >> ((position % blocksPerWord) * bitsPerBlock)) & ((1 << bitsPerBlock) - 1)); int x = (position >> 8) & 0xF; int y = position & 0xF; int z = (position >> 4) & 0xF; if (state >= pallete.Length) { continue; } BlockState translated = GetBlockState(pallete[state]); if (translated != null) { if (translated.Block is Water) { string a = ""; } section.Set(storage, x, y, z, translated); } position++; } if (position >= 4096) { break; } } } } else { if (section == null) { section = new ChunkSection(chunkColumn, s, true, 1); } #region OldFormat byte[] blockIds = new byte[4096]; defStream.Read(blockIds, 0, blockIds.Length); NibbleArray data = new NibbleArray(4096); defStream.Read(data.Data, 0, data.Data.Length); for (int x = 0; x < 16; x++) { for (int z = 0; z < 16; z++) { for (int y = 0; y < 16; y++) { int idx = (x << 8) + (z << 4) + y; var id = blockIds[idx]; var meta = data[idx]; var ruid = BlockFactory.GetBlockStateID(id, meta); BlockState result = null; if (!_convertedStates.TryGetValue( ruid, out result)) { if (id == 124 || id == 123) { result = BlockFactory.GetBlockState("minecraft:redstone_lamp"); if (id == 124) { result = result.WithProperty("lit", "true"); } } else if (id > 0 && result == null) { var reverseMap = MiNET.Worlds.AnvilWorldProvider.Convert.FirstOrDefault( map => map.Value.Item1 == id); if (reverseMap.Value != null) { id = (byte)reverseMap.Key; } var res = BlockFactory.GetBlockStateID(id, meta); if (AnvilWorldProvider.BlockStateMapper.TryGetValue(res, out var res2)) { var t = BlockFactory.GetBlockState(res2); t = TranslateBlockState(t, id, meta); result = t; } else { Log.Info($"Did not find anvil statemap: {result.Name}"); result = TranslateBlockState( BlockFactory.GetBlockState(res), id, meta); } } if (result == null) { var results = BlockFactory.RuntimeIdTable.Where(xx => xx.Id == id) .ToArray(); if (results.Length > 0) { var first = results.FirstOrDefault(xx => xx.Data == meta); if (first == default) { first = results[0]; } result = TranslateBlockState( BlockFactory.GetBlockState((uint)first.RuntimeId), id, meta); } } if (result == null) { result = new BlockState() { Name = $"{id}:{meta.ToString()}", Model = BlockFactory.UnknownBlockModel, Block = new Block(0) { } }; Log.Info($"Unknown block: {id}:{meta}"); } if (result != null) { _convertedStates.TryAdd(ruid, result); } } if (result != null) { section.Set(x, y, z, result); } else { Log.Info($"Unknown block: {id}:{meta}"); } } } } #endregion } if (UseAlexChunks) { // Log.Info($"Alex chunk!"); var rawSky = new API.Utils.NibbleArray(4096); defStream.Read(rawSky.Data, 0, rawSky.Data.Length); var rawBlock = new API.Utils.NibbleArray(4096); defStream.Read(rawBlock.Data, 0, rawBlock.Data.Length); for (int x = 0; x < 16; x++) { for (int y = 0; y < 16; y++) { for (int z = 0; z < 16; z++) { var peIndex = (x * 256) + (z * 16) + y; var sky = rawSky[peIndex]; var block = rawBlock[peIndex]; var idx = y << 8 | z << 4 | x; section.SkyLight[idx] = sky; section.BlockLight[idx] = block; } } } gotLight = true; } section.RemoveInvalidBlocks(); section.IsDirty = true; //Make sure the section is saved. chunkColumn.Sections[s] = section; } /* byte[] ba = new byte[512]; * if (defStream.Read(ba, 0, 256 * 2) != 256 * 2) Log.Error($"Out of data height"); * * Buffer.BlockCopy(ba, 0, chunkColumn.Height, 0, 512);*/ int[] biomeIds = new int[256]; for (int i = 0; i < biomeIds.Length; i++) { biomeIds[i] = defStream.ReadByte(); } chunkColumn.BiomeId = biomeIds; if (stream.Position >= stream.Length - 1) { callback?.Invoke(chunkColumn); return; } int borderBlock = VarInt.ReadSInt32(stream); if (borderBlock > 0) { byte[] buf = new byte[borderBlock]; int len = defStream.Read(buf, 0, borderBlock); } if (stream.Position < stream.Length - 1) { int loop = 0; while (stream.Position < stream.Length - 1) { try { NbtFile file = new NbtFile() { BigEndian = false, UseVarInt = true }; file.LoadFromStream(stream, NbtCompression.None); if (file.RootTag.Name == "alex") { NbtCompound alexCompound = (NbtCompound)file.RootTag; for (int ci = 0; ci < subChunkCount; ci++) { var section = (ChunkSection)chunkColumn.Sections[ci]; var rawSky = new API.Utils.NibbleArray(4096); if (alexCompound.TryGet($"skylight-{ci}", out NbtByteArray skyData)) { rawSky.Data = skyData.Value; } //defStream.Read(rawSky.Data, 0, rawSky.Data.Length); var rawBlock = new API.Utils.NibbleArray(4096); if (alexCompound.TryGet($"blocklight-{ci}", out NbtByteArray blockData)) { rawBlock.Data = blockData.Value; } for (int x = 0; x < 16; x++) { for (int y = 0; y < 16; y++) { for (int z = 0; z < 16; z++) { var peIndex = (x * 256) + (z * 16) + y; var sky = rawSky[peIndex]; var block = rawBlock[peIndex]; var idx = y << 8 | z << 4 | x; section.SkyLight[idx] = sky; section.BlockLight[idx] = block; } } } chunkColumn.Sections[ci] = section; } gotLight = true; } if (stream.Position < stream.Length - 1) { // pre = stream.ReadByte(); } } catch (Exception ex) { // Log.Warn(ex, $"Reading chunk extra data (Loop={loop})"); } loop++; } } if (stream.Position < stream.Length - 1) { Log.Warn( $"Still have data to read\n{Packet.HexDump(defStream.ReadBytes((int) (stream.Length - stream.Position)))}"); } if (gotLight) { chunkColumn.SkyLightDirty = false; chunkColumn.BlockLightDirty = false; } chunkColumn.CalculateHeight(!gotLight && ClientSideLighting); //Done processing this chunk, send to world callback?.Invoke(chunkColumn); } } catch (Exception ex) { Log.Error($"Exception in chunk loading: {ex.ToString()}"); } finally { } }
public static ChunkColumn DecocedChunkColumn(byte[] buffer) { lock (_chunkRead) { MemoryStream stream = new MemoryStream(buffer); { NbtBinaryReader defStream = new NbtBinaryReader(stream, true); Log.Debug("New chunk column"); int count = defStream.ReadByte(); if (count < 1) { Log.Warn("Nothing to read"); return(null); } if (count > 1) { Log.Debug($"Reading {count} sections"); } else { Log.Debug($"Reading {count} sections"); } ChunkColumn chunkColumn = new ChunkColumn(); for (int s = 0; s < count; s++) { int idx = defStream.ReadByte(); Log.Debug($"New section {s}, index={idx}"); Chunk chunk = chunkColumn.chunks[s]; int chunkSize = 16 * 16 * 16; defStream.Read(chunk.blocks, 0, chunkSize); //Log.Debug($"Blocks1:\n{Package.HexDump(chunk.blocks)}"); if (defStream.Read(chunk.metadata.Data, 0, chunkSize / 2) != chunkSize / 2) { Log.Error($"Out of data: metadata"); } //Log.Debug($"metadata:\n{Package.HexDump(chunk.metadata.Data)}"); if (defStream.Read(chunk.skylight.Data, 0, chunkSize / 2) != chunkSize / 2) { Log.Error($"Out of data: skylight"); } //Log.Debug($"skylight:\n{Package.HexDump(chunk.skylight.Data)}"); if (defStream.Read(chunk.blocklight.Data, 0, chunkSize / 2) != chunkSize / 2) { Log.Error($"Out of data: blocklight"); } //Log.Debug($"blocklight:\n{Package.HexDump(chunk.blocklight.Data)}"); //Log.Debug($"skylight.Data:\n{Package.HexDump(chunk.skylight.Data, 64)}"); //Log.Debug($"blocklight.Data:\n{Package.HexDump(chunk.blocklight.Data)}"); //byte[] ints = new byte[256*4]; //var readLen = defStream.Read(ints, 0, ints.Length); //if (readLen != ints.Length) Log.Error($"Out of data biomeColors, read lenght {readLen}"); //Log.Debug($"biomeColor (pre):\n{Package.HexDump(ints)}"); //return null; //int j = 0; //for (int i = 0; i < ints.Length; i = i + 4) //{ // chunk.biomeId[j] = ints[i]; // chunk.biomeColor[j++] = BitConverter.ToInt32(new[] {(byte) 0, ints[i + 1], ints[i + 2], ints[i + 3]}, 0); //} //Log.Debug($"biomeId (post):\n{Package.HexDump(chunk.biomeId)}"); //if (stream.Position >= stream.Length - 1) return chunk; ////return chunk; //return chunk; } //if (stream.Position >= stream.Length - 1) continue; if (defStream.Read(chunkColumn.height, 0, 256 * 2) != 256 * 2) { Log.Error($"Out of data height"); } //Log.Debug($"Heights:\n{Package.HexDump(chunk.height)}"); //if (stream.Position >= stream.Length - 1) continue; if (defStream.Read(chunkColumn.biomeId, 0, 256) != 256) { Log.Error($"Out of data biomeId"); } //Log.Debug($"biomeId:\n{Package.HexDump(chunk.biomeId)}"); //if (stream.Position >= stream.Length - 1) continue; int borderBlock = VarInt.ReadSInt32(stream); if (borderBlock != 0) { Log.Warn($"??? Got borderblock {borderBlock}"); } int extraCount = VarInt.ReadSInt32(stream); if (extraCount != 0) { //Log.Warn($"Got extradata\n{Package.HexDump(defStream.ReadBytes(extraCount*10))}"); for (int i = 0; i < extraCount; i++) { var hash = VarInt.ReadSInt32(stream); var blockData = defStream.ReadInt16(); Log.Warn($"Got extradata: hash=0x{hash:X2}, blockdata=0x{blockData:X2}"); } } if (stream.Position < stream.Length - 1) { //Log.Debug($"Got NBT data\n{Package.HexDump(defStream.ReadBytes((int) (stream.Length - stream.Position)))}"); while (stream.Position < stream.Length) { NbtFile file = new NbtFile() { BigEndian = false, UseVarInt = true }; file.LoadFromStream(stream, NbtCompression.None); Log.Debug($"Blockentity: {file.RootTag}"); } } if (stream.Position < stream.Length - 1) { Log.Warn($"Still have data to read\n{Package.HexDump(defStream.ReadBytes((int)(stream.Length - stream.Position)))}"); } } return(new ChunkColumn()); } }
internal override bool ReadTag(NbtBinaryReader readStream) { int length = readStream.ReadInt32(); if (length < 0) { throw new NbtFormatException("Negative length given in TAG_Byte_Array"); } if (readStream.Selector != null && !readStream.Selector(this)) { readStream.Skip(length); return false; } Value = readStream.ReadBytes(length); if (Value.Length < length) { throw new EndOfStreamException(); } return true; }