public static NetworkMessage Build(BigEndianReader stream)
{
ushort header = stream.ReadUShort();
uint id = (uint) header >> 2;
int lenght = GetMessageLenght(stream, header);
if (id > int.MinValue)
{
byte[] buffer = (lenght > 0) ? stream.ReadBytes(lenght) : new byte[] {};
return Build(id, new BigEndianReader(buffer));
}
throw new Exception("Invalid packet id : " + id);
}
public void CheckAccount()
{
if (message == null)
{
Logger.Error("Trying to check an account without identification message.");
client.Stop();
return;
}
if (message.Version.ToString() != CURRENT_VERSION)
{
client.Send(
new IdentificationFailedForBadVersionMessage((sbyte) IdentificationFailureReasonEnum.BAD_VERSION,
new Common.Protocol.Net.Types.Version.Version(2,11,2,72101,1,0)));
client.Stop();
return;
}
byte[] credentials = RSA.Decrypt(message.Credentials);
BigEndianReader reader = new BigEndianReader(credentials);
reader.Seek(Encoding.UTF8.GetByteCount(salt));
int lenght = reader.ReadByte();
string username = Encoding.UTF8.GetString(reader.ReadBytes(lenght));
string password = Encoding.UTF8.GetString(reader.ReadBytes(reader.Available));
AccountModel account = AccountsTable.Load(username);
if (account == null || account.Password != password)
{
client.Send(new IdentificationFailedMessage((sbyte)IdentificationFailureReasonEnum.WRONG_CREDENTIALS));
client.Stop();
}
else if (account.Banned)
{
client.Send(new IdentificationFailedBannedMessage((sbyte)IdentificationFailureReasonEnum.BANNED, 0));
client.Stop();
}
else
{
ValidAccount(account, message.Autoconnect);
}
}