public byte[] GetPacket()
{
var finalPacket = new List<byte>();
finalPacket.AddRange(EncodeHelper.EncodeShort((short) (Payload.Count + 8), true)); // Packet length.
finalPacket.AddRange(EncodeHelper.CreatePadding(4)); // Unknown.
finalPacket.AddRange(EncodeHelper.EncodeShort(Header, true)); // Packet header.
finalPacket.AddRange(Payload);
return finalPacket.ToArray();
}
private void ReceiveCallback(IAsyncResult ar)
{
try
{
var byteCount = _socket.EndReceive(ar);
if (byteCount == 0)
{
_socket.Close();
_socket.Dispose();
Logger.Debug($"[{_clientId}] Connection from {_remoteEndPoint.Address} was dropped.");
return;
}
var packet = new byte[byteCount];
Buffer.BlockCopy(_buffer, 0, packet, 0, byteCount);
/* Packet 502 - RsLoginFail
*
* new Packet(502)
* .Append(EncodeHelper.CreatePadding(4))
* .Append(EncodeHelper.EncodeShort(1101, true));
*/
/* Packet 602 - LsLoginFail
*
* new Packet(602)
* .Append(EncodeHelper.CreatePadding(4))
* .Append(EncodeHelper.EncodeInteger(819, true)) // Custom error
* .Append(Encoding.Unicode.GetBytes("Some kind of custom error")); // Custom error
*/
var packetLength = EncodeHelper.DecodeShort(new[] { packet[1], packet[0] });
var packetHeader = packet[2]; // Not sure :)
Logger.Trace($"[{_clientId}] Incoming packet:{Environment.NewLine}" +
$"Packet Length Raw: {packet.Length}{Environment.NewLine}" +
$"Packet Length: {packetLength}{Environment.NewLine}" +
$"Packet ID: {packetHeader}{Environment.NewLine}" +
$"Packet Hex:{Environment.NewLine}" +
$"{HexUtils.HexDump(packet)}");
var packetList = new List <byte[]>();
switch (packetHeader)
{
case 255:
{
// Connect to port 8005??
packetList.Add(new Packet(501)
.Append(EncodeHelper.CreatePadding(4))
.Append(0x74)
.Append(0x0)
.Append(0x0)
.Append(0x1)
.GetPacket());
break;
}
case 5:
{
packetList.Add(new Packet(601)
.Append(EncodeHelper.CreatePadding(4))
.Append(Encoding.ASCII.GetBytes("Cool"))
.Append(EncodeHelper.CreatePadding(42))
.Append(Encoding.Unicode.GetBytes("Test"))
.GetPacket());
break;
}
case 3:
{
packetList.Add(new Packet(2).GetPacket());
break;
}
default:
Logger.Error($"[{_clientId}] Incoming packet was not known.");
break;
}
if (packetList.Count > 0)
{
foreach (var outgoingPacket in packetList)
{
SendPacket(outgoingPacket);
}
}
}
catch (Exception exception)
{
Logger.Error(exception, $"[{_clientId}] An exception occured during receive.");
}
finally
{
WaitForData();
}
}
private void ReceiveCallback(IAsyncResult ar)
{
try
{
var byteCount = _socket.EndReceive(ar);
if (byteCount == 0)
{
_socket.Close();
_socket.Dispose();
Console.WriteLine($"Connection from {_remoteEndPoint.Address} was dropped.");
return;
}
var packet = new byte[byteCount];
Buffer.BlockCopy(_buffer, 0, packet, 0, byteCount);
/* Packet processor */
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine(BitConverter.ToString(packet));
Console.WriteLine(BitConverter.ToString(packet).Replace("-", ""));
var packetLength = EncodeHelper.DecodeShort(new[] { packet[1], packet[0] });
var packetHeader = EncodeHelper.DecodeShort(new[] { packet[3], packet[2] });
var command = EncodeHelper.DecodeShort(new[] { packet[7], packet[6] });
Console.WriteLine($"Packet Length [Short]: {packetLength}");
Console.WriteLine($"Packet ID [Short]: {packetHeader}");
Console.WriteLine($"Command [Short]: {command}");
Console.WriteLine($"Packet Raw: {Encoding.UTF8.GetString(packet)}");
/* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
* 10-00-11-00-04-00-01-00-01-00-00-00-E4-00-00-00
* | Length
* | ID
* |?
* | CMD
*
* Second Packet:
* CMD 7&8: Launcht het spel / gameguard update
*/
/* Packet responder */
var packetList = new List <byte>();
switch (command)
{
case 1:
/* Error example
* List<byte> packetList = new List<byte>();
* packetList.AddRange(Encoder.CreatePadding(6)); // pos 0,1,2,3,4,5 (6)
* packetList.AddRange(Encoder.EncodeShort(99).Reverse()); // COMMAND pos 6,7 (2)
* packetList.AddRange(Encoder.CreatePadding(4)); // pos 8,9,10,11 (4)
* packetList.AddRange(Encoder.EncodeInteger(1337).Reverse()); // pos 12,13,14,15 (5)
* packetList.AddRange(Encoding.Unicode.GetBytes("l33t")); // pos 16+ */
packetList.AddRange(EncodeHelper.CreatePadding(6));
packetList.AddRange(EncodeHelper.EncodeShort(2).Reverse());
packetList.AddRange(EncodeHelper.CreatePadding(8));
_socket.Send(packetList.ToArray());
break;
case 6:
packetList.AddRange(EncodeHelper.CreatePadding(6));
packetList.AddRange(EncodeHelper.EncodeShort(8).Reverse());
packetList.AddRange(EncodeHelper.CreatePadding(4));
_socket.Send(packetList.ToArray());
break;
}
/* Finalize */
Console.ResetColor();
Console.WriteLine("Received bytes: " + byteCount);
}
catch (Exception exception)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(exception.StackTrace);
Console.ResetColor();
}
finally
{
WaitForData();
}
}
private void ReceiveCallback(IAsyncResult ar)
{
try
{
int byteCount = _socket.EndReceive(ar);
if (byteCount == 0)
{
_socket.Close();
_socket.Dispose();
Console.WriteLine($"Lost connection from {_remoteEndPoint.Address}.");
return;
}
var packet = new byte[byteCount];
Buffer.BlockCopy(_buffer, 0, packet, 0, byteCount);
/* Packet processor */
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine(BitConverter.ToString(packet));
var packetLength = EncodeHelper.DecodeShort(new[] { packet[1], packet[0] });
var packetHeader = packet[2]; // Not sure :)
Console.WriteLine($"Packet Length [Short]: {packetLength}");
Console.WriteLine($"Packet ID [Byte]: {packetHeader}");
Console.WriteLine($"Packet Raw: {Encoding.UTF8.GetString(packet)}");
Console.WriteLine($"Packet Raw Unicode: {Encoding.Unicode.GetString(packet)}");
var packetList = new List <byte>();
switch (packetHeader)
{
case 5:
packetList.AddRange(EncodeHelper.CreatePadding(4));
packetList.AddRange(BitEndianConverter.GetBytes((short)502, true)); // Packet ID
packetList.AddRange(EncodeHelper.CreatePadding(4));
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.Add(0x05);
packetList.InsertRange(0, BitEndianConverter.GetBytes((short)(packetList.Count + 2), true));
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine(BitConverter.ToString(packetList.ToArray()));
Console.WriteLine("Bytes: " + packetList.Count);
_socket.Send(packetList.ToArray());
break;
case 3:
packetList.Add(0x03);
packetList.Add(0x04);
packetList.Add(0x01);
packetList.Add(0x02);
packetList.Add(0x02); // Must be 2?
packetList.InsertRange(0, BitEndianConverter.GetBytes((short)(packetList.Count + 2), true));
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine(BitConverter.ToString(packetList.ToArray()));
Console.WriteLine("Bytes: " + packetList.Count);
_socket.Send(packetList.ToArray());
break;
default:
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Unknown packet received, trying to send it back lol.");
_socket.Send(packet);
break;
}
/* Finalize */
Console.ResetColor();
Console.WriteLine("Received bytes: " + byteCount);
}
catch (Exception exception)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(exception);
Console.ResetColor();
}
finally
{
WaitForData();
}
}