public void CreatePacket(UInt64 TransactionID, UInt32 Result, redBuffer Data, SteamClient Client)
{
_TransactionID = TransactionID;
_XUID = Client.XUID;
_Username = SteamCrypto.fnv1_hash(Client.Username);
_Type = Result;
_Seed = (UInt32)(new Random((Int32)DateTime.Now.Ticks).Next());
_IP = (UInt32)Client.GetIP().Address; // We will only use ipv4 so we ignore that it's deprecated.
_Data = new Byte[Data.Length()];
Array.Copy(Data.GetBuffer(), _Data, Data.Length());
}
public static Byte[] QuickMessage(UInt64 TransactionID, UInt32 Type, String Data, SteamClient Client)
{
NetworkPacket NewPacket = new NetworkPacket();
redBuffer NewBuffer = new redBuffer();
NewBuffer.WriteBlob(Encoding.ASCII.GetBytes(Data));
NewPacket.CreatePacket(TransactionID, Type, NewBuffer, Client);
NewBuffer = new redBuffer();
NewPacket.Serialize(ref NewBuffer, Client);
return NewBuffer.GetBuffer();
}
public void Deserialize(redBuffer Buffer, SteamClient Client)
{
Byte[] IV = new Byte[24];
Byte[] Key = new Byte[24];
Byte[] EncryptedData = new Byte[1];
// Read the packet.
Buffer.ReadUInt64(ref _TransactionID);
Buffer.ReadUInt64(ref _XUID);
Buffer.ReadUInt64(ref _Username);
Buffer.ReadUInt32(ref _Type);
Buffer.ReadUInt32(ref _Seed);
Buffer.ReadUInt32(ref _IP);
Buffer.ReadBlob(ref EncryptedData);
// Generate the IV and key.
IV = SteamCrypto.CalculateIV(_Seed);
Key = SteamCrypto.CalculateIV(Client.SessionID);
Array.Resize<Byte>(ref IV, 8);
// Create a new buffer and encrypt the data.
_Data = new Byte[EncryptedData.Length];
_Data = SteamCrypto.Decrypt(EncryptedData, Key, IV);
}
// Handles all packets and calls the service designated to the packet type.
public void HandlePacket(SteamClient Client)
{
redBuffer InternalBuffer;
Byte[] ServiceData = new Byte[1];
NetworkPacket ServicePacket = new NetworkPacket();
// Serialize and create the packet.
InternalBuffer = new redBuffer(Client.Buffer);
InternalBuffer.ReadBlob(ref ServiceData);
ServicePacket.Deserialize(new redBuffer(ServiceData), Client);
// Log that we got a packet for debug.
Log.Debug(String.Format("PacketType: {0}", ServicePacket._Type));
// If it's a heartbeat packet, drop it.
if(ServicePacket._Type == 64)
return;
// Send the packet to the right service.
if(ServiceMap.ContainsKey(ServicePacket._Type))
ServiceMap[ServicePacket._Type].HandlePacket(ref ServicePacket, ref Client);
else
Log.Debug(String.Format("Couldn't find a service for {0}", ServicePacket._Type));
}
// Async callbacks.
private static void ConnectCallback(IAsyncResult result)
{
SteamClient Client = new SteamClient();
try
{
Client.ClientSocket = (Socket)result.AsyncState;
Client.ClientSocket = Client.ClientSocket.EndAccept(result);
Log.Info(String.Format("Client connected from {0}", Client.ClientSocket.RemoteEndPoint.ToString()));
lock (Clients)
{
Client.ClientID = !Clients.Any() ? 0 : Clients.Keys.Max() + 1;
Clients.Add(Client.ClientID, Client);
}
Client.ClientSocket.BeginReceive(Client.Buffer, 0, SteamClient.BufferSize, SocketFlags.None, new AsyncCallback(ReceiveCallback), Client);
}
catch (Exception e)
{
Log.Error(e.Message);
}
}
public void Serialize(ref redBuffer Buffer, SteamClient Client)
{
Byte[] IV = new Byte[24];
Byte[] Key = new Byte[24];
Byte[] EncryptedData;
// The boring stuff.
Buffer.WriteUInt64(_TransactionID);
Buffer.WriteUInt64(_XUID);
Buffer.WriteUInt64(_Username);
Buffer.WriteUInt32(_Type);
Buffer.WriteUInt32(_Seed);
Buffer.WriteUInt32(_IP);
// Generate the IV and key.
IV = SteamCrypto.CalculateIV(_Seed);
Key = SteamCrypto.CalculateIV(Client.SessionID);
// Resize the buffers to keep 3DES happy.
Array.Resize<Byte>(ref IV, 8);
Array.Resize<Byte>(ref _Data, _Data.Length + (8 - _Data.Length % 8));
// Create a new buffer and encrypt the data.
EncryptedData = new Byte[_Data.Length];
EncryptedData = SteamCrypto.Encrypt(_Data, Key, IV);
// Write the encrypted data to the packet.
Buffer.WriteBlob(EncryptedData);
}
public void CreatePacket(UInt64 TransactionID, UInt32 Result, redBuffer Data, SteamClient Client)
{
_TransactionID = TransactionID;
_XUID = Client.XUID;
_Username = SteamCrypto.fnv1_hash(Client.Username);
_Type = Result;
_Seed = (UInt32)(new Random((Int32)DateTime.Now.Ticks).Next());
_IP = (UInt32)Client.GetIP().Address; // We will only use ipv4 so we ignore that it's deprecated.
_Data = new Byte[Data.Length()];
Array.Copy(Data.GetBuffer(), _Data, Data.Length());
}
public static Byte[] QuickMessage(UInt64 TransactionID, UInt32 Type, String Data, SteamClient Client)
{
NetworkPacket NewPacket = new NetworkPacket();
redBuffer NewBuffer = new redBuffer();
NewBuffer.WriteBlob(Encoding.ASCII.GetBytes(Data));
NewPacket.CreatePacket(TransactionID, Type, NewBuffer, Client);
NewBuffer = new redBuffer();
NewPacket.Serialize(ref NewBuffer, Client);
return(NewBuffer.GetBuffer());
}
// Async callbacks.
private static void ConnectCallback(IAsyncResult result)
{
SteamClient Client = new SteamClient();
try
{
Client.ClientSocket = (Socket)result.AsyncState;
Client.ClientSocket = Client.ClientSocket.EndAccept(result);
Log.Info(String.Format("Client connected from {0}", Client.ClientSocket.RemoteEndPoint.ToString()));
lock (Clients)
{
Client.ClientID = !Clients.Any() ? 0 : Clients.Keys.Max() + 1;
Clients.Add(Client.ClientID, Client);
}
Client.ClientSocket.BeginReceive(Client.Buffer, 0, SteamClient.BufferSize, SocketFlags.None, new AsyncCallback(ReceiveCallback), Client);
}
catch (Exception e)
{
Log.Error(e.Message);
}
}
