private void ClearPacketHandler(byte[] recvbuf, int buflen)
{
if (buflen == 0)
{
Console.WriteLine("Client sent empty packet. Disconnecting...");
IsConnected = false;
return;
}
byte[] arrData = new byte[buflen];
Array.Copy(recvbuf, arrData, buflen);
Octet data = new Octet(arrData);
byte packetid = data.UnMarshalByte();
switch (packetid)
{
case (byte)LinkServerPacket.LoginRequest:
Login loginPacket = new Login(data);
_username = loginPacket.Username;
_passwordHash = loginPacket.Hash;
Console.WriteLine("User {0} is trying to login", _username);
string passHash = BitConverter.ToString(_passwordHash).Replace("-", string.Empty);
string dbHashString = _database.GetUserPasswd(_username, passHash);
if (dbHashString.Equals(passHash))
{
SMKey smkeyPacket = new SMKey();
SendReply(smkeyPacket.GetBytes());
_smKey = smkeyPacket.GetSMKey();
HMACMD5 hmacmd5 = new HMACMD5(Encoding.ASCII.GetBytes(_username));
byte[] array = new byte[_passwordHash.Length + _smKey.Length];
_passwordHash.CopyTo(array, 0);
_smKey.CopyTo(array, _passwordHash.Length);
byte[] RC4_C2SKEY = hmacmd5.ComputeHash(array);
C2S_Crypto = new RC4(RC4_C2SKEY);
_isEncrypted = true;
}
else
{
ErrorInfo errorPacket = new ErrorInfo(2);
SendReply(errorPacket.GetBytes());
Console.WriteLine("Login error!");
}
break;
default:
IsConnected = false;
Console.WriteLine("Unknown packet. Disconnecting...");
Console.WriteLine(BitConverter.ToString(recvbuf, 0, buflen));
break;
}
}