public override void OnPacketInbound(Packet pPacket)
{
if (pPacket.Length == 0)
return;
pPacket.Reset(0);
AC_OnPacketInbound(pPacket);
}
/// <summary>
/// Used as IAsyncResult parser for ContinueReading().
/// </summary>
/// <param name="pIAR">The result AsyncCallback makes</param>
private void EndReading(IAsyncResult pIAR)
{
int amountReceived = 0;
try
{
amountReceived = _socket.EndReceive(pIAR);
}
catch (Exception ex)
{
amountReceived = 0;
Console.WriteLine(TypeName + " amountReceived == 0! " + ex.ToString());
}
if (amountReceived == 0)
{
Console.WriteLine(TypeName + " amountReceived == 0! OnDisconnectInternal()");
// We got a disWvsBeta.Common.Sessions here!
OnDisconnectINTERNAL();
return;
}
// Add amount of bytes received to _bufferpos so we know if we got everything.
_bufferpos += amountReceived;
try
{
// Check if we got all data. There is _no_ way we would have received more bytes than needed. Period.
if (_bufferpos == _bufferlen)
{
// It seems we have all data we need
// Now check if we got a header
if (_header)
{
if (!_encryption && _receivingFromServer)
{
// Unencrypted packets have a short header with plain length.
ushort length = (ushort)(_buffer[0] | _buffer[1] << 8);
StartReading(length);
}
else
{
int length = GetHeaderLength(_buffer);
StartReading(length);
}
}
else
{
Packet packet;
if (_encryption)
{
_buffer = Decrypt(_buffer);
packet = new Packet(_buffer);
DoAction((date) =>
{
try
{
OnPacketInbound(packet);
}
catch (Exception ex)
{
Console.WriteLine("Handling Packet Error: {0}", ex.ToString());
}
});
}
else
{
_encryption = true; // First packet received or sent is unencrypted. All others are.
packet = new Packet(_buffer);
_mapleVersion = packet.ReadUShort();
_maplePatchLocation = _maplePatchLocation = packet.ReadString();
_encryptIV = packet.ReadBytes(4);
_decryptIV = packet.ReadBytes(4);
_mapleLocale = packet.ReadByte();
Console.WriteLine(TypeName + " MapleVersion: {0}; Patch Location: {1}; Locale: {2}", _mapleVersion, _maplePatchLocation, _mapleLocale);
if (_mapleLocale == 8 && _mapleVersion >= 118)
{
SwitchAESByVersion(_mapleVersion);
}
packet.Reset();
DoAction((date) =>
{
try
{
OnHandshakeInbound(packet);
}
catch (Exception ex)
{
Console.WriteLine("Handling Packet Error: {0}", ex.ToString());
}
});
}
StartReading(4, true);
}
}
else
{
ContinueReading();
}
}
catch (SocketException socketException)
{
Console.WriteLine(TypeName + " Socket Exception while receiving data: {0}", socketException.Message);
OnDisconnectINTERNAL();
}
catch (Exception ex)
{
Console.WriteLine(TypeName + " [ERROR] EndReading(): {0}", ex.ToString());
OnDisconnectINTERNAL();
}
}
/// <summary>
/// Used as IAsyncResult parser for ContinueReading().
/// </summary>
/// <param name="pIAR">The result AsyncCallback makes</param>
private void EndReading(IAsyncResult pIAR)
{
int amountReceived = 0;
try
{
amountReceived = _socket.EndReceive(pIAR);
}
catch (Exception ex)
{
Trace.WriteLine("EXCEPT" + " : " + ex.ToString());
amountReceived = 0;
}
if (amountReceived == 0)
{
OnDisconnectINTERNAL("No data received");
return;
}
// Add amount of bytes received to _bufferpos so we know if we got everything.
_bufferpos += amountReceived;
try
{
// Check if we got all data. There is _no_ way we would have received more bytes than needed. Period.
if (_bufferpos == _bufferlen)
{
// It seems we have all data we need
// Now check if we got a header
if (_header)
{
if (!_encryption && _receivingFromServer)
{
// Unencrypted packets have a short header with plain length.
ushort length = (ushort)(_buffer[0] | _buffer[1] << 8);
StartReading(length);
}
else
{
int length = GetHeaderLength(_buffer, _bufferlen, _decryptIV, _mapleVersion, _receivingFromServer);
if (length == HEADER_ERROR_MORE_DATA)
{
_bufferlen += 4;
ContinueReading();
}
else
{
StartReading(length);
}
}
}
else
{
Packet packet;
if (_encryption)
{
// Small scope hack; this will be on the stack until the
// callback in DoAction leaves scope
byte[] tmpIV = new byte[4];
Array.Copy(_decryptIV, 0, tmpIV, 0, 4);
// Make a copy of the data because it will be transformed
var tempBuff = new byte[_bufferlen];
Array.Copy(_buffer, 0, tempBuff, 0, _bufferlen);
var data = Decrypt(tempBuff, _bufferlen, _decryptIV);
packet = new Packet(data, _bufferlen);
byte opcode = data[0];
DoAction((date) =>
{
if (Disconnected)
{
return;
}
try
{
Array.Copy(tmpIV, 0, previousDecryptIV, 0, 4);
OnPacketInbound(packet);
}
catch (Exception ex)
{
////Console.WriteLine("Handling Packet Error: {0}", ex.ToString());
}
}, "Packet handling opcode: " + opcode);
}
else
{
_encryption = true; // First packet received or sent is unencrypted. All others are.
packet = new Packet(_buffer, _bufferlen);
_mapleVersion = packet.ReadUShort();
_maplePatchLocation = packet.ReadString();
_encryptIV = packet.ReadBytes(4);
_decryptIV = packet.ReadBytes(4);
_mapleLocale = packet.ReadByte();
StartSendAndEncryptLoop();
initCipher();
packet.Reset();
DoAction((date) =>
{
try
{
OnHandshakeInbound(packet);
}
catch (Exception ex)
{
////Console.WriteLine("Handling Packet Error: {0}", ex.ToString());
}
}, "Handshake handling");
}
StartReading(4, true);
}
}
else
{
ContinueReading();
}
}
catch (SocketException socketException)
{
Trace.WriteLine(TypeName + " Socket Exception while receiving data: " + socketException);
OnDisconnectINTERNAL("EndRead socket exception");
}
catch (ObjectDisposedException)
{
OnDisconnectINTERNAL("EndRead object disposed");
}
catch (Exception ex)
{
Trace.WriteLine(TypeName + " [ERROR] EndReading(): " + ex);
OnDisconnectINTERNAL("EndRead exception");
}
}
/// <summary>
/// Used as IAsyncResult parser for ContinueReading().
/// </summary>
/// <param name="pIAR">The result AsyncCallback makes</param>
private void EndReading(IAsyncResult pIAR)
{
int amountReceived = 0;
try
{
amountReceived = _socket.EndReceive(pIAR);
}
catch (Exception ex)
{
MWLR_Logging.Logger.WriteLine(TypeName + " : " + ex.ToString());
amountReceived = 0;
}
if (amountReceived == 0)
{
// We got a disconnection here!
OnDisconnectINTERNAL();
return;
}
// Add amount of bytes received to _bufferpos so we know if we got everything.
_bufferpos += amountReceived;
try
{
// Check if we got all data. There is _no_ way we would have received more bytes than needed. Period.
if (_bufferpos == _bufferlen)
{
// It seems we have all data we need
// Now check if we got a header
if (_header)
{
if (!_encryption && _receivingFromServer)
{
// Unencrypted packets have a short header with plain length.
ushort length = (ushort)(_buffer[0] | _buffer[1] << 8);
StartReading(length);
}
else
{
int length = GetHeaderLength(_buffer);
StartReading(length);
}
}
else
{
Packet packet;
if (_encryption)
{
_buffer = Decrypt(_buffer, _mapleLocale == 1);
packet = new Packet(_buffer);
DoAction((date) =>
{
try
{
OnPacketInbound(packet);
}
catch (Exception ex)
{
MWLR_Logging.Logger.WriteLine("Handling Packet Error: {0}", ex.ToString());
}
});
}
else
{
_encryption = true; // First packet received or sent is unencrypted. All others are.
packet = new Packet(_buffer);
_mapleVersion = packet.ReadUShort();
_maplePatchLocation = packet.ReadString();
_encryptIV = packet.ReadBytes(4);
_decryptIV = packet.ReadBytes(4);
_mapleLocale = packet.ReadByte();
MWLR_Logging.Logger.WriteLine(TypeName + " MapleVersion: {0}; Patch Location: {1}; Locale: {2}", _mapleVersion, _maplePatchLocation, _mapleLocale);
if (_mapleLocale == 1)
{
int test = int.Parse(_maplePatchLocation);
ushort t1 = (ushort)(test & 0x7FFF);
int t2 = (test >> 15) & 1;
int t3 = (test >> 16) & 0xFF;
MWLR_Logging.Logger.WriteLine("Logging KMS connection. Version {0} | {1} | {2}", t1, t2, t3);
_mapleVersion = t1;
_maplePatchLocation = t3.ToString();
}
else if (_mapleLocale == 8 && _mapleVersion >= 118)
{
if (!MWLR_Logging.GMSKeys.ContainsKey(_mapleVersion))
{
MWLR_Logging.GMSKeys.Initialize();
}
if (MWLR_Logging.GMSKeys.ContainsKey(_mapleVersion))
{
SwitchAESByVersion(_mapleVersion);
}
else
{
MWLR_Logging.Logger.WriteLine("There's no key for this version, yet.");
MWLR_Logging.TwitterClient.Instance.SendMessage("HEY, @Diamondo25! Update da keyzz!!");
Disconnect();
System.Threading.Thread.Sleep(15 * 60 * 1000);
}
}
packet.Reset();
DoAction((date) =>
{
try
{
OnHandshakeInbound(packet);
}
catch (Exception ex)
{
MWLR_Logging.Logger.WriteLine("Handling Packet Error: {0}", ex.ToString());
}
});
}
StartReading(4, true);
}
}
else
{
ContinueReading();
}
}
catch (SocketException socketException)
{
MWLR_Logging.Logger.WriteLine(TypeName + " Socket Exception while receiving data: {0}", socketException.Message);
OnDisconnectINTERNAL();
}
catch (Exception ex)
{
MWLR_Logging.Logger.WriteLine(TypeName + " [ERROR] EndReading(): {0}", ex.ToString());
OnDisconnectINTERNAL();
}
}
public override void OnPacketInbound(Packet pPacket)
{
if (pPacket.Length == 0)
{
return;
}
StartLogging();
try
{
byte header = pPacket.ReadByte();
if (IsConnectedAsClient)
{
if (header == (byte)ServerMessages.PING)
{
SendPong();
}
}
else
{
if (header == (byte)ClientMessages.PONG)
{
gotPong = true;
PingMS = (int)(MasterThread.CurrentTime - pingSentDateTime);
}
else if (header == (byte)ClientMessages.__CUSTOM_DC_ME__)
{
ScheduleDisconnect();
return;
}
else if (MEMORY_CRC_ENABLED)
{
// Check for expected CRC packet
if ((BitConverter.ToUInt16(previousDecryptIV, 0) % 31) == 0)
{
bool disconnect = true;
if (header == (byte)ClientMessages.CLIENT_HASH)
{
var mode = pPacket.ReadByte();
if (mode == 1)
{
var clientCRC = pPacket.ReadUInt();
if (ValidateCRC(clientCRC))
{
disconnect = false;
}
else
{
log.Error($"Disconnecting client because CRC didnt match {clientCRC}");
}
}
else
{
log.Error($"Disconnecting client because unexpected mode: {mode}");
}
}
else
{
log.Error(
$"Disconnecting client because expected CLIENT_HASH packet, but got {header} instead");
}
if (disconnect)
{
Disconnect();
return;
}
}
}
}
pPacket.Reset(0);
AC_OnPacketInbound(pPacket);
}
catch (Exception ex)
{
log.Error(ex);
}
finally
{
EndLogging();
}
}
/// <summary>
/// Used as IAsyncResult parser for ContinueReading().
/// </summary>
/// <param name="pIAR">The result AsyncCallback makes</param>
private void EndReading(IAsyncResult pIAR)
{
int amountReceived = 0;
try
{
amountReceived = _socket.EndReceive(pIAR);
}
catch (Exception ex)
{
MWLR_Logging.Logger.WriteLine(TypeName + " : " + ex.ToString());
amountReceived = 0;
}
if (amountReceived == 0)
{
// We got a disconnection here!
OnDisconnectINTERNAL();
return;
}
// Add amount of bytes received to _bufferpos so we know if we got everything.
_bufferpos += amountReceived;
try
{
// Check if we got all data. There is _no_ way we would have received more bytes than needed. Period.
if (_bufferpos == _bufferlen)
{
// It seems we have all data we need
// Now check if we got a header
if (_header)
{
if (!_encryption && _receivingFromServer)
{
// Unencrypted packets have a short header with plain length.
ushort length = (ushort)(_buffer[0] | _buffer[1] << 8);
StartReading(length);
}
else
{
int length = GetHeaderLength(_buffer);
StartReading(length);
}
}
else
{
Packet packet;
if (_encryption)
{
_buffer = Decrypt(_buffer, _mapleLocale == 1);
packet = new Packet(_buffer);
DoAction((date) =>
{
try
{
OnPacketInbound(packet);
}
catch (Exception ex)
{
MWLR_Logging.Logger.WriteLine("Handling Packet Error: {0}", ex.ToString());
}
});
}
else
{
_encryption = true; // First packet received or sent is unencrypted. All others are.
packet = new Packet(_buffer);
_mapleVersion = packet.ReadUShort();
_maplePatchLocation = packet.ReadString();
_encryptIV = packet.ReadBytes(4);
_decryptIV = packet.ReadBytes(4);
_mapleLocale = packet.ReadByte();
MWLR_Logging.Logger.WriteLine(TypeName + " MapleVersion: {0}; Patch Location: {1}; Locale: {2}", _mapleVersion, _maplePatchLocation, _mapleLocale);
if (_mapleLocale == 1)
{
int test = int.Parse(_maplePatchLocation);
ushort t1 = (ushort)(test & 0x7FFF);
int t2 = (test >> 15) & 1;
int t3 = (test >> 16) & 0xFF;
MWLR_Logging.Logger.WriteLine("Logging KMS connection. Version {0} | {1} | {2}", t1, t2, t3);
_mapleVersion = t1;
_maplePatchLocation = t3.ToString();
}
else if (_mapleLocale == 8 && _mapleVersion >= 118)
{
if (!MWLR_Logging.GMSKeys.ContainsKey(_mapleVersion))
MWLR_Logging.GMSKeys.Initialize();
if (MWLR_Logging.GMSKeys.ContainsKey(_mapleVersion))
{
SwitchAESByVersion(_mapleVersion);
}
else
{
MWLR_Logging.Logger.WriteLine("There's no key for this version, yet.");
MWLR_Logging.TwitterClient.Instance.SendMessage("HEY, @Diamondo25! Update da keyzz!!");
Disconnect();
System.Threading.Thread.Sleep(15 * 60 * 1000);
}
}
packet.Reset();
DoAction((date) =>
{
try
{
OnHandshakeInbound(packet);
}
catch (Exception ex)
{
MWLR_Logging.Logger.WriteLine("Handling Packet Error: {0}", ex.ToString());
}
});
}
StartReading(4, true);
}
}
else
{
ContinueReading();
}
}
catch (SocketException socketException)
{
MWLR_Logging.Logger.WriteLine(TypeName + " Socket Exception while receiving data: {0}", socketException.Message);
OnDisconnectINTERNAL();
}
catch (Exception ex)
{
MWLR_Logging.Logger.WriteLine(TypeName + " [ERROR] EndReading(): {0}", ex.ToString());
OnDisconnectINTERNAL();
}
}
