private void ParseData(byte[] data)
{
byte[] x = null;
if (Key != null)
{
try
{
byte[] buffer = Convert.FromBase64String(data.GetString());
x = buffer.Decrypt(Key);
}
catch { x = data; }
}
else
{
x = data;
}
// Parse any commands from our received data.
string packet = x.GetString();
try
{
if (packet.Contains(ECPPacketType.HANDSHAKE.GetString()))
{
// Generate a new handshake request for the client.
if (packet.Substring(0, ECPPacketType.HANDSHAKE.GetString().Length) == ECPPacketType.HANDSHAKE.GetString())
{
try
{
// Log that we've received a handshake request.
Server.LogOutput(ClientID + " has requested a handshake.", EntryType.Notice);
// Jit our diffie-hellman before sending the actual request packet.
ECPDiffieHellman Jitter = new ECPDiffieHellman(32).GenerateRequest();
// Create a new request packet.
Exchange = new ECPDiffieHellman(256).GenerateRequest();
// Send our packet to the client and log it.
string message = ECPPacketType.HANDSHAKE.GetString() + Exchange.ToString();
Server.Broadcast(message, ClientID);
Server.LogOutput("A handshake has been sent to " + ClientID + ".", EntryType.Notice);
}
catch //catch(Exception ex)
{
//Server.LogOutput(ex.StackTrace, EntryType.Error);
Server.LogOutput("A handshake could not be sent to " + ClientID + ".", EntryType.Error);
}
}
}
else if (packet.Contains(ECPPacketType.HREPLY.GetString()))
{
// Generate a new encryption key using our handshake response.
if (packet.Substring(0, ECPPacketType.HREPLY.GetString().Length) == ECPPacketType.HREPLY.GetString())
{
try
{
// Parse our response to get our handshake reply.
string response = packet.Replace(ECPPacketType.HREPLY.GetString(), null);
// Generate a new session key from our response.
Exchange.HandleResponse(response);
Key = Convert.ToBase64String(Exchange.Key);
Server.LogOutput("A new session key has been generated!", EntryType.Success);
}
catch { Server.LogOutput("The handshake response could not be processed.", EntryType.Error); }
if (Key != null)
{
Server.Broadcast(ECPPacketType.HSUCCESS.GetString().Encrypt(Key), ClientID);
Server.LogOutput(Key, EntryType.General);
}
}
}
else
{
// Pass our data to our event.
Server.DataReceived(ClientID, x);
}
}
catch { }
}
private void ParseData(byte[] data)
{
byte[] x = null;
if (Key != null)
{
try
{
byte[] buffer = Convert.FromBase64String(data.GetString());
x = buffer.Decrypt(Key);
}
catch { x = data; }
}
else
{
x = data;
}
// Parse any commands from our received data.
string command = x.GetString();
try
{
if (command.Contains(commands[0]))
{
// Generate a new handshake request for the server.
if (command.Substring(0, commands[0].Length) == commands[0])
{
try
{
// Create a new response packet.
string response = command.Replace(commands[0], null);
Exchange = new ECPDiffieHellman(256).GenerateResponse(response);
// Generate a new session key from our response.
Key = Convert.ToBase64String(Exchange.Key);
// Send our reponse packet to the server and log it.
string message = "{HREPLY}" + Exchange.ToString();
Send(message);
Handshake = false;
LogOutput("A new session key has been generated!", EntryType.Success);
}
catch { LogOutput("A handshake could not be sent to the server.", EntryType.Error); }
if (Key != null)
{
LogOutput(Key, EntryType.General);
}
}
}
else if (command.Contains(commands[2]))
{
if (command.Substring(0, commands[2].Length) == commands[2])
{
Stream.Close();
Client.Close();
ClientDisconnected();
LogOutput("The connection has been closed by the server.", EntryType.Notice, true);
}
}
else
{
// Pass our data to our event.
DataReceived(x);
}
}
catch { }
}