public static ColumnDefinitionPayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
var catalog = reader.ReadLengthEncodedByteString();
var schema = reader.ReadLengthEncodedByteString();
var table = reader.ReadLengthEncodedByteString();
var physicalTable = reader.ReadLengthEncodedByteString();
var name = Encoding.UTF8.GetString(reader.ReadLengthEncodedByteString());
var physicalName = reader.ReadLengthEncodedByteString();
reader.ReadByte(0x0C); // length of fixed-length fields, always 0x0C
var characterSet = (CharacterSet) reader.ReadUInt16();
var columnLength = (int) reader.ReadUInt32();
var columnType = (ColumnType) reader.ReadByte();
var columnFlags = (ColumnFlags) reader.ReadUInt16();
var decimals = reader.ReadByte(); // 0x00 for integers and static strings, 0x1f for dynamic strings, double, float, 0x00 to 0x51 for decimals
reader.ReadByte(0);
if (reader.BytesRemaining > 0)
{
int defaultValuesCount = checked((int) reader.ReadLengthEncodedInteger());
for (int i = 0; i < defaultValuesCount; i++)
reader.ReadLengthEncodedByteString();
}
if (reader.BytesRemaining != 0)
throw new FormatException("Extra bytes at end of payload.");
return new ColumnDefinitionPayload(name, characterSet, columnLength, columnType, columnFlags);
}
internal InitialHandshakePacket(ByteArrayReader reader)
{
reader.ReadByte(c_protocolVersion);
ServerVersion = reader.ReadNullTerminatedByteString();
ConnectionId = reader.ReadInt32();
AuthPluginData = reader.ReadByteString(8);
reader.ReadByte(0);
var capabilityFlagsLow = reader.ReadUInt16();
if (reader.BytesRemaining > 0)
{
var charSet = (CharacterSet)reader.ReadByte();
ServerStatus status = (ServerStatus)reader.ReadInt16();
var capabilityFlagsHigh = reader.ReadUInt16();
ProtocolCapabilities = (ProtocolCapabilities)(capabilityFlagsHigh << 16 | capabilityFlagsLow);
var authPluginDataLength = reader.ReadByte();
var unused = reader.ReadByteString(10);
if ((ProtocolCapabilities & ProtocolCapabilities.SecureConnection) != 0)
{
var authPluginData2 = reader.ReadByteString(Math.Max(13, authPluginDataLength - 8));
var concatenated = new byte[AuthPluginData.Length + authPluginData2.Length];
Buffer.BlockCopy(AuthPluginData, 0, concatenated, 0, AuthPluginData.Length);
Buffer.BlockCopy(authPluginData2, 0, concatenated, AuthPluginData.Length, authPluginData2.Length);
AuthPluginData = concatenated;
}
if ((ProtocolCapabilities & ProtocolCapabilities.PluginAuth) != 0)
{
AuthPluginName = Encoding.UTF8.GetString(reader.ReadNullTerminatedByteString());
}
}
}
CommResponse IProtocolCodec.ClientDecode(CommDataBase data)
{
ModbusClient ownerProtocol = (ModbusClient)data.OwnerProtocol;
ModbusCommand userData = (ModbusCommand)data.UserData;
ByteArrayReader incomingData = data.IncomingData;
int count = incomingData.Length - 4;
if (count >= 0 && (int)incomingData.ReadByte() == (int)ownerProtocol.Address)
{
byte num1 = incomingData.ReadByte();
ByteArrayReader body = new ByteArrayReader(incomingData.ReadBytes(count));
ushort num2 = ByteArrayHelpers.CalcCRC16(incomingData.ToArray(), 0, incomingData.Length - 2);
if ((int)incomingData.ReadInt16LE() == (int)(short)num2 && ((int)num1 & (int)sbyte.MaxValue) == (int)userData.FunctionCode)
{
if (num1 <= (byte)127)
{
ModbusCodecBase.CommandCodecs[(int)num1]?.ClientDecode(userData, body);
return(new CommResponse(data, 3));
}
if (incomingData.CanRead(1))
{
userData.ExceptionCode = incomingData.ReadByte();
}
return(new CommResponse(data, 2));
}
}
return(new CommResponse(data, 0));
}
CommResponse IProtocolCodec.ServerDecode(CommDataBase data)
{
ModbusServer ownerProtocol = (ModbusServer)data.OwnerProtocol;
ByteArrayReader incomingData = data.IncomingData;
int length = incomingData.Length;
if (length < 4)
{
return(new CommResponse(data, 0));
}
if ((int)incomingData.ReadByte() == (int)ownerProtocol.Address)
{
byte fc = incomingData.ReadByte();
if ((int)fc < ModbusCodecBase.CommandCodecs.Length)
{
ModbusCommand command = new ModbusCommand(fc);
data.UserData = (object)command;
command.QueryTotalLength = 6;
ModbusCommandCodec commandCodec = ModbusCodecBase.CommandCodecs[(int)fc];
ByteArrayReader body = new ByteArrayReader(incomingData.ReadBytes(length - 4));
commandCodec.ServerDecode(command, body);
ushort num = ByteArrayHelpers.CalcCRC16(incomingData.ToArray(), 0, command.QueryTotalLength - 2);
if ((int)ByteArrayHelpers.ReadInt16LE(((IByteArray)incomingData).Data, command.QueryTotalLength - 2) == (int)(short)num)
{
return(new CommResponse(data, 3));
}
}
}
return(new CommResponse(data, 1));
}
/// <summary>
/// Helper for unpacking discrete data incoming as a bit-array
/// </summary>
/// <param name="command"></param>
/// <param name="body"></param>
internal static void PopDiscretes(
ModbusCommand command,
ByteArrayReader body)
{
var byteCount = body.ReadByte();
var count = command.Count;
command.Data = new ushort[count];
command.QueryTotalLength += (byteCount + 1);
int k = 0;
while (body.EndOfBuffer == false)
{
if (command.Count <= k)
{
break;
}
byte hb = body.CanRead(1) ? body.ReadByte() : (byte)0;
byte lb = body.CanRead(1) ? body.ReadByte() : (byte)0;
command.Data[k++] = (ushort)((hb << 8) | lb);
//int n = count <= 8 ? count : 8;
//count -= n;
//for (int i = 0; i < n; i++)
// command.Data[k++] = (ushort)(cell & (1 << i));
}
}
CommResponse IProtocolCodec.ClientDecode(CommDataBase data)
{
ModbusClient ownerProtocol = (ModbusClient)data.OwnerProtocol;
ModbusCommand userData = (ModbusCommand)data.UserData;
ByteArrayReader incomingData = data.IncomingData;
if (incomingData.Length >= 6 && (int)incomingData.ReadUInt16BE() == (int)(ushort)userData.TransId && incomingData.ReadInt16BE() == (short)0)
{
short num1 = incomingData.ReadInt16BE();
if (incomingData.Length >= (int)num1 + 6 && (int)incomingData.ReadByte() == (int)ownerProtocol.Address)
{
byte num2 = incomingData.ReadByte();
if (((int)num2 & (int)sbyte.MaxValue) == (int)userData.FunctionCode)
{
if (num2 <= (byte)127)
{
ByteArrayReader body = new ByteArrayReader(incomingData.ReadToEnd());
ModbusCodecBase.CommandCodecs[(int)num2]?.ClientDecode(userData, body);
return(new CommResponse(data, 3));
}
userData.ExceptionCode = incomingData.ReadByte();
return(new CommResponse(data, 2));
}
}
}
return(new CommResponse(data, 0));
}
public static ColumnDefinitionPayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
var catalog = reader.ReadLengthEncodedByteString();
var schema = reader.ReadLengthEncodedByteString();
var table = reader.ReadLengthEncodedByteString();
var physicalTable = reader.ReadLengthEncodedByteString();
var name = Encoding.UTF8.GetString(reader.ReadLengthEncodedByteString());
var physicalName = reader.ReadLengthEncodedByteString();
reader.ReadByte(0x0C); // length of fixed-length fields, always 0x0C
var characterSet = (CharacterSet)reader.ReadUInt16();
var columnLength = (int)reader.ReadUInt32();
var columnType = (ColumnType)reader.ReadByte();
var columnFlags = (ColumnFlags)reader.ReadUInt16();
var decimals = reader.ReadByte(); // 0x00 for integers and static strings, 0x1f for dynamic strings, double, float, 0x00 to 0x51 for decimals
reader.ReadByte(0);
if (reader.BytesRemaining > 0)
{
int defaultValuesCount = checked ((int)reader.ReadLengthEncodedInteger());
for (int i = 0; i < defaultValuesCount; i++)
{
reader.ReadLengthEncodedByteString();
}
}
if (reader.BytesRemaining != 0)
{
throw new FormatException("Extra bytes at end of payload.");
}
return(new ColumnDefinitionPayload(name, characterSet, columnLength, columnType, columnFlags));
}
public static ColumnDefinitionPayload Create(ArraySegment <byte> arraySegment)
{
var reader = new ByteArrayReader(arraySegment);
SkipLengthEncodedByteString(ref reader); // catalog
SkipLengthEncodedByteString(ref reader); // schema
SkipLengthEncodedByteString(ref reader); // table
SkipLengthEncodedByteString(ref reader); // physical table
SkipLengthEncodedByteString(ref reader); // name
SkipLengthEncodedByteString(ref reader); // physical name
reader.ReadByte(0x0C); // length of fixed-length fields, always 0x0C
var characterSet = (CharacterSet)reader.ReadUInt16();
var columnLength = reader.ReadUInt32();
var columnType = (ColumnType)reader.ReadByte();
var columnFlags = (ColumnFlags)reader.ReadUInt16();
var decimals = reader.ReadByte(); // 0x00 for integers and static strings, 0x1f for dynamic strings, double, float, 0x00 to 0x51 for decimals
reader.ReadByte(0); // reserved byte 1
reader.ReadByte(0); // reserved byte 2
return(new ColumnDefinitionPayload
{
OriginalData = arraySegment,
CharacterSet = characterSet,
ColumnLength = columnLength,
ColumnType = columnType,
ColumnFlags = columnFlags,
Decimals = decimals
});
}
internal InitialHandshakePacket(ByteArrayReader reader)
{
reader.ReadByte(c_protocolVersion);
ServerVersion = reader.ReadNullTerminatedByteString();
var connectionId = reader.ReadInt32();
AuthPluginData = reader.ReadByteString(8);
reader.ReadByte(0);
var capabilityFlagsLow = reader.ReadUInt16();
if (reader.BytesRemaining > 0)
{
var charSet = (CharacterSet) reader.ReadByte();
ServerStatus status = (ServerStatus) reader.ReadInt16();
var capabilityFlagsHigh = reader.ReadUInt16();
ProtocolCapabilities = (ProtocolCapabilities) (capabilityFlagsHigh << 16 | capabilityFlagsLow);
var authPluginDataLength = reader.ReadByte();
var unused = reader.ReadByteString(10);
if (ProtocolCapabilities.HasFlag(ProtocolCapabilities.SecureConnection) && authPluginDataLength > 0)
{
var authPluginData2 = reader.ReadByteString(Math.Max(13, authPluginDataLength - 8));
var concatenated = new byte[AuthPluginData.Length + authPluginData2.Length];
Buffer.BlockCopy(AuthPluginData, 0, concatenated, 0, AuthPluginData.Length);
Buffer.BlockCopy(authPluginData2, 0, concatenated, AuthPluginData.Length, authPluginData2.Length);
AuthPluginData = concatenated;
}
if (ProtocolCapabilities.HasFlag(ProtocolCapabilities.PluginAuth))
AuthPluginName = Encoding.UTF8.GetString(reader.ReadNullTerminatedByteString());
}
}
/// <summary>
/// Helper for unpacking discrete data incoming as a bit-array
/// </summary>
/// <param name="command"></param>
/// <param name="body"></param>
internal static void PopDiscretes(
ModbusCommand command,
ByteArrayReader body)
{
var byteCount = body.ReadByte();
var count = command.Count;
command.Data = new ushort[count];
command.QueryTotalLength += (byteCount + 1);
int k = 0;
while (count > 0)
{
byteCount--;
int cell = body.ReadByte();
int n = count <= 8 ? count : 8;
count -= n;
for (int i = 0; i < n; i++)
{
command.Data[k++] = (ushort)(cell & (1 << i));
}
}
}
public static InitialHandshakePayload Create(ReadOnlySpan <byte> span)
{
var reader = new ByteArrayReader(span);
reader.ReadByte(c_protocolVersion);
var serverVersion = reader.ReadNullTerminatedByteString();
var connectionId = reader.ReadInt32();
byte[] authPluginData = null;
var authPluginData1 = reader.ReadByteString(8);
string authPluginName = null;
reader.ReadByte(0);
var protocolCapabilities = (ProtocolCapabilities)reader.ReadUInt16();
if (reader.BytesRemaining > 0)
{
var charSet = (CharacterSet)reader.ReadByte();
var status = (ServerStatus)reader.ReadInt16();
var capabilityFlagsHigh = reader.ReadUInt16();
protocolCapabilities |= (ProtocolCapabilities)((ulong)capabilityFlagsHigh << 16);
var authPluginDataLength = reader.ReadByte();
var unused = reader.ReadByteString(6);
long extendedCapabilites = reader.ReadInt32();
if ((protocolCapabilities & ProtocolCapabilities.LongPassword) == 0)
{
// MariaDB clears the CLIENT_LONG_PASSWORD flag to indicate it's not a MySQL Server
protocolCapabilities |= (ProtocolCapabilities)(extendedCapabilites << 32);
}
if ((protocolCapabilities & ProtocolCapabilities.SecureConnection) != 0)
{
var authPluginData2 = reader.ReadByteString(Math.Max(13, authPluginDataLength - 8));
authPluginData = new byte[authPluginData1.Length + authPluginData2.Length];
authPluginData1.CopyTo(authPluginData);
authPluginData2.CopyTo(new Span <byte>(authPluginData).Slice(authPluginData1.Length));
}
if ((protocolCapabilities & ProtocolCapabilities.PluginAuth) != 0)
{
authPluginName = Encoding.UTF8.GetString(reader.ReadNullOrEofTerminatedByteString());
}
}
if (authPluginData is null)
{
authPluginData = authPluginData1.ToArray();
}
if (reader.BytesRemaining != 0)
{
throw new FormatException("Extra bytes at end of payload.");
}
return(new InitialHandshakePayload(protocolCapabilities, serverVersion.ToArray(), connectionId, authPluginData, authPluginName));
}
public static CachingSha2ServerResponsePayload Create(ReadOnlySpan <byte> span)
{
var reader = new ByteArrayReader(span);
reader.ReadByte(Signature);
var secondByte = reader.ReadByte();
return(new CachingSha2ServerResponsePayload(
secondByte == SuccessSignature,
secondByte == FullAuthRequiredSignature));
}
public static ErrorPayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
reader.ReadByte(Signature);
var errorCode = reader.ReadUInt16();
reader.ReadByte(0x23);
var state = Encoding.ASCII.GetString(reader.ReadByteString(5));
var message = Encoding.UTF8.GetString(reader.ReadByteString(payload.ArraySegment.Count - 9));
return new ErrorPayload(errorCode, state, message);
}
public static CachingSha2ServerResponsePayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
reader.ReadByte(Signature);
var secondByte = reader.ReadByte();
return(new CachingSha2ServerResponsePayload(
secondByte == SuccessSignature,
secondByte == FullAuthRequiredSignature));
}
public static EventHeader Create(ref ByteArrayReader reader)
{
reader.ReadByte(); // skip 0x00 OK byte
var timestamp = reader.ReadInt32();
var eventType = (EventType)reader.ReadByte();
var serverId = reader.ReadInt32();
var eventSize = reader.ReadInt32();
var position = reader.ReadInt32();
var flags = (EventFlags)reader.ReadInt16();
return(new EventHeader(timestamp, eventType, serverId, eventSize, position, flags));
}
public static StatementPrepareResponsePayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
reader.ReadByte(0);
var statementId = reader.ReadInt32();
var columnCount = (int)reader.ReadInt16();
var parameterCount = (int)reader.ReadInt16();
reader.ReadByte(0);
var warningCount = (int)reader.ReadInt16();
return(new StatementPrepareResponsePayload(statementId, columnCount, parameterCount));
}
public static ErrorPayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
reader.ReadByte(Signature);
var errorCode = reader.ReadUInt16();
reader.ReadByte(0x23);
var state = Encoding.ASCII.GetString(reader.ReadByteString(5));
var message = Encoding.UTF8.GetString(reader.ReadByteString(payload.ArraySegment.Count - 9));
return(new ErrorPayload(errorCode, state, message));
}
public void ReadByte()
{
var reader = new ByteArrayReader(new byte[]
{
0x80,
0x80
});
Assert.Equal((byte) 0x80, reader.ReadByte());
Assert.Equal(1u, reader.Offset);
Assert.Equal((sbyte) -128, reader.ReadSByte());
Assert.Throws<EndOfStreamException>(() => reader.ReadByte());
}
public static PrepareStatementOkPayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
reader.ReadByte(0);
var statementId = reader.ReadUInt32();
int columnCount = reader.ReadUInt16();
int parameterCount = reader.ReadUInt16();
reader.ReadByte(0);
int warningCount = reader.ReadUInt16();
if (reader.BytesRemaining != 0)
throw new FormatException("Extra bytes at end of payload.");
return new PrepareStatementOkPayload(statementId, columnCount, parameterCount, warningCount);
}
public static StatementPrepareResponsePayload Create(ReadOnlySpan <byte> span)
{
var reader = new ByteArrayReader(span);
reader.ReadByte(0);
var statementId = reader.ReadInt32();
var columnCount = (int)reader.ReadInt16();
var parameterCount = (int)reader.ReadInt16();
reader.ReadByte(0);
var warningCount = (int)reader.ReadInt16();
return(new StatementPrepareResponsePayload(statementId, columnCount, parameterCount));
}
public static InitialHandshakePayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
reader.ReadByte(c_protocolVersion);
var serverVersion = reader.ReadNullTerminatedByteString();
var connectionId = reader.ReadInt32();
byte[] authPluginData = null;
var authPluginData1 = reader.ReadByteArraySegment(8);
string authPluginName = null;
reader.ReadByte(0);
var protocolCapabilities = (ProtocolCapabilities)reader.ReadUInt16();
if (reader.BytesRemaining > 0)
{
var charSet = (CharacterSet)reader.ReadByte();
var status = (ServerStatus)reader.ReadInt16();
var capabilityFlagsHigh = reader.ReadUInt16();
protocolCapabilities |= (ProtocolCapabilities)(capabilityFlagsHigh << 16);
var authPluginDataLength = reader.ReadByte();
var unused = reader.ReadByteArraySegment(10);
if ((protocolCapabilities & ProtocolCapabilities.SecureConnection) != 0)
{
var authPluginData2 = reader.ReadByteArraySegment(Math.Max(13, authPluginDataLength - 8));
var concatenated = new byte[authPluginData1.Count + authPluginData2.Count];
Buffer.BlockCopy(authPluginData1.Array, authPluginData1.Offset, concatenated, 0, authPluginData1.Count);
Buffer.BlockCopy(authPluginData2.Array, authPluginData2.Offset, concatenated, authPluginData1.Count, authPluginData2.Count);
authPluginData = concatenated;
}
if ((protocolCapabilities & ProtocolCapabilities.PluginAuth) != 0)
{
authPluginName = Encoding.UTF8.GetString(reader.ReadNullOrEofTerminatedByteString());
}
}
if (authPluginData == null)
{
authPluginData = new byte[authPluginData1.Count];
Buffer.BlockCopy(authPluginData1.Array, authPluginData1.Offset, authPluginData, 0, authPluginData1.Count);
}
if (reader.BytesRemaining != 0)
{
throw new FormatException("Extra bytes at end of payload.");
}
return(new InitialHandshakePayload(protocolCapabilities, serverVersion, connectionId, authPluginData, authPluginName));
}
public override void ServerDecode(
ModbusCommand command,
ByteArrayReader body)
{
_device = body.ReadByte();
var data_len = body.ReadByte();
body.ReadByte();
body.ReadByte();
_address = body.ReadInt32BE();
_dayIndex = _address & 0x03FF;
_category = (_address & 0xFC00) >> 10;
command.Count = data_len;
command.Data = new ushort[command.Count];
}
public override bool ServerDecode(
ModbusCommand command,
ByteArrayReader body)
{
if (ModbusCodecBase.PopRequestHeader(command, body) == false)
{
return(false);
}
var success = false;
if (body.CanRead(1))
{
var count = body.ReadByte();
if (body.CanRead(count))
{
command.QueryTotalLength += (count + 1);
count /= 2;
command.Data = new ushort[count];
for (int i = 0; i < count; i++)
{
command.Data[i] = body.ReadUInt16BE();
}
success = true;
}
}
return(success);
}
public static AuthenticationMoreDataPayload Create(ReadOnlySpan <byte> span)
{
var reader = new ByteArrayReader(span);
reader.ReadByte(Signature);
return(new AuthenticationMoreDataPayload(reader.ReadByteString(reader.BytesRemaining).ToArray()));
}
public void SetFullState(ByteArrayReader reader)
{
reader.Offset = 0;
var objectId = reader.ReadUShort();
var reflectionName = reader.ReadString();
var type = (__SerializationGameObjectType)reader.ReadByte();
var playerUid = reader.ReadUShort();
SetStateHeader(reader);
if (GlobalSettings.Debug)
{
SetFullStateInternal(reader);
}
else
{
try
{
SetFullStateInternal(reader);
}
catch (Exception ex)
{
Game.Logger.Error($"GameObject full state parsing failed! {ReflectionName}[ID {ObjectId}]", ex);
SetFullStateInternal(reader);
}
}
}
internal static void PopDiscretes(ModbusCommand command, ByteArrayReader body)
{
byte num1 = body.ReadByte();
int count = command.Count;
command.Data = new ushort[count];
command.QueryTotalLength += (int)num1 + 1;
byte num2;
byte num3;
for (int index = 0; !body.EndOfBuffer && command.Count > index; command.Data[index++] = (ushort)((uint)num2 << 8 | (uint)num3))
{
num2 = body.CanRead(1) ? body.ReadByte() : (byte)0;
num3 = body.CanRead(1) ? body.ReadByte() : (byte)0;
}
}
public void SetFullState(ByteArrayReader reader)
{
var isNull = reader.ReadBool();
if (isNull)
{
_isNullWeapon = true;
return;
}
else
{
_isNullWeapon = false;
}
TargetingType = (WeaponTargetingType)reader.ReadByte();
MaxDistance = reader.ReadFloat();
ProjectileType = ResolveTypeFromString(reader.ReadString());
ProjectileVelocity = reader.ReadHalfVector();
ProjectileOffset = reader.ReadHalfVector();
ProjectileRotation = reader.ReadHalf();
ProjectileRotationVelocity = reader.ReadHalf();
MaxActiveProjectileCount = reader.ReadUShort();
FireRotationIsRelativeToTankRotation = reader.ReadBool();
FireRotationIsRelativeToTankLookDirection = reader.ReadBool();
AddedRotation = reader.ReadHalf();
TransformPositionAndVelocityByRotation = reader.ReadBool();
WeaponRechargeTime = reader.ReadTimeSpan();
WeaponName = reader.ReadString();
TimeRecharged = reader.ReadTimeSpan();
_projectileArray = reader.ReadBytes();
}
public override bool ClientDecode(
ModbusCommand command,
ByteArrayReader body)
{
var success = false;
if (body.CanRead(1))
{
var count = body.ReadByte();
if (body.CanRead(count))
{
count /= 2;
command.Data = new ushort[count];
for (int i = 0; i < count; i++)
{
command.Data[i] = body.ReadUInt16BE();
}
success = true;
}
}
return(success);
}
public static AuthenticationMoreDataPayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
reader.ReadByte(Signature);
return(new AuthenticationMoreDataPayload(reader.ReadByteArray(reader.BytesRemaining)));
}
public static AuthenticationMethodSwitchRequestPayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
reader.ReadByte(Signature);
var name = Encoding.UTF8.GetString(reader.ReadNullTerminatedByteString());
var data = reader.ReadByteString(reader.BytesRemaining);
return new AuthenticationMethodSwitchRequestPayload(name, data);
}
public void EmptyArray()
{
var reader = new ByteArrayReader(new byte[0]);
Assert.Equal(0u, reader.Length);
Assert.Throws<EndOfStreamException>(() => reader.ReadByte());
Assert.Equal(0, reader.ReadBytes(new byte[10], 0, 10));
}
public static LocalInfilePayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
reader.ReadByte(Signature);
var fileName = Encoding.UTF8.GetString(reader.ReadByteString(reader.BytesRemaining));
return(new LocalInfilePayload(fileName));
}
public override void ClientDecode(
ModbusCommand command,
ByteArrayReader body)
{
var count = body.ReadByte() / 2;
command.Data = new ushort[count];
for (int i = 0; i < count; i++)
command.Data[i] = body.ReadUInt16BE();
}
public static PrepareStatementOkPayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
reader.ReadByte(0);
var statementId = reader.ReadUInt32();
int columnCount = reader.ReadUInt16();
int parameterCount = reader.ReadUInt16();
reader.ReadByte(0);
int warningCount = reader.ReadUInt16();
if (reader.BytesRemaining != 0)
{
throw new FormatException("Extra bytes at end of payload.");
}
return(new PrepareStatementOkPayload(statementId, columnCount, parameterCount, warningCount));
}
public static LocalInfilePayload Create(ReadOnlySpan <byte> span)
{
var reader = new ByteArrayReader(span);
reader.ReadByte(Signature);
var fileName = Encoding.UTF8.GetString(reader.ReadByteString(reader.BytesRemaining));
return(new LocalInfilePayload(fileName));
}
public override void ClientDecode(ModbusCommand command, ByteArrayReader body)
{
int length = (int)body.ReadByte() / 2;
command.Data = new ushort[length];
for (int index = 0; index < length; ++index)
{
command.Data[index] = body.ReadUInt16BE();
}
}
public static OkPayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
reader.ReadByte(Signature);
var affectedRowCount = checked((int) reader.ReadLengthEncodedInteger());
var lastInsertId = checked((long) reader.ReadLengthEncodedInteger());
var serverStatus = (ServerStatus) reader.ReadUInt16();
var warningCount = (int) reader.ReadUInt16();
return new OkPayload(affectedRowCount, lastInsertId, serverStatus, warningCount);
}
public static EofPayload Create(PayloadData payload)
{
var reader = new ByteArrayReader(payload.ArraySegment);
reader.ReadByte(Signature);
if (payload.ArraySegment.Count > 5)
throw new FormatException("Not an EOF packet");
int warningCount = reader.ReadUInt16();
ServerStatus serverStatus = (ServerStatus) reader.ReadUInt16();
if (reader.BytesRemaining != 0)
throw new FormatException("Extra bytes at end of payload.");
return new EofPayload(warningCount, serverStatus);
}
public override void ServerDecode(
ModbusCommand command,
ByteArrayReader body)
{
ModbusCodecBase.PopRequestHeader(
command,
body);
var count = body.ReadByte() / 2;
command.Data = new ushort[count];
command.QueryTotalLength += (count + 3);
for (int i = 0; i < count; i++)
command.Data[i] = body.ReadUInt16BE();
}
private static long ReadFieldLength(ByteArrayReader reader)
{
var leadByte = reader.ReadByte();
switch (leadByte)
{
case 0xFB:
return -1;
case 0xFC:
return reader.ReadFixedLengthUInt32(2);
case 0xFD:
return reader.ReadFixedLengthUInt32(3);
case 0xFE:
return checked((long) reader.ReadFixedLengthUInt64(8));
default:
return leadByte;
}
}
/// <summary>
/// Helper for unpacking discrete data incoming as a bit-array
/// </summary>
/// <param name="command"></param>
/// <param name="body"></param>
internal static void PopDiscretes(
ModbusCommand command,
ByteArrayReader body)
{
var byteCount = body.ReadByte();
var count = command.Count;
command.Data = new ushort[count];
command.QueryTotalLength += (byteCount + 1);
int k = 0;
while (body.EndOfBuffer == false)
{
if (command.Count <= k)
break;
byte hb = body.CanRead(1) ? body.ReadByte() : (byte)0;
byte lb = body.CanRead(1) ? body.ReadByte() : (byte)0;
command.Data[k++] = (ushort)((hb << 8) | lb);
//int n = count <= 8 ? count : 8;
//count -= n;
//for (int i = 0; i < n; i++)
// command.Data[k++] = (ushort)(cell & (1 << i));
}
}
public override void ServerDecode(
ModbusCommand command,
ByteArrayReader body)
{
_device = body.ReadByte();
var data_len = body.ReadByte();
body.ReadByte();
body.ReadByte();
_address = body.ReadInt32BE();
_dayIndex = _address & 0x03FF;
_category = (_address & 0xFC00) >> 10;
command.Count = data_len;
command.Data = new ushort[command.Count];
}
