void CheckSameFPs(fp user)
{
List <fp> list = this.fplist.FindAll(x => x.hash == user.hash);
if (list.Count > this.fp_limit)
{
list[list.Count - 1].client.Disconnect();
this.fplist.Remove(list[list.Count - 1]);
CheckSameFPs(user);
}
}
public override bool OnPacketReceived(Packet packet, IClient client)
{
if (packet.Opcode == 0x133D && !fp_enabled)
{
packet.Replace(new Packet(0x2002));
return(true);
}
if (packet.Opcode == 0x133D)
{
if (!fp_enabled)
{
return(false);
}
try {
ushort version = packet.ReadUInt16();
packet.ReadAscii();
int size = packet.ReadUInt16();
byte[] bytes = packet.ReadBytes(size);
byte[] decryptedbytes = AES.Decrypt(bytes);
PacketReader reader = new PacketReader(decryptedbytes);
string fp = Encoding.UTF8.GetString(reader.ReadBytes(reader.ReadUInt16()));
bool isVMWare = reader.ReadByte() == 1;
bool isVPC = reader.ReadByte() == 1;
string key = Encoding.UTF8.GetString(reader.ReadBytes(reader.ReadUInt16()));
fp user = new fp()
{
client = client,
hash = fp,
isvmware = isVMWare,
isvpc = isVPC,
providerkey = key
};
fp find = this.fplist.Find(x => x.client == client);
if (user.isvmware && !fp_allow_vmware)
{
client.Disconnect();
GetLogger().Trace("The user will be disconnected due use VMWare.");
return(false);
}
if (user.isvpc && !fp_allow_vpc)
{
client.Disconnect();
GetLogger().Trace("The user will be disconnected due use VPC.");
return(false);
}
if (key != provider_key)
{
client.Disconnect();
GetLogger().Trace("The user will be disconnected due wrong provider key.");
return(false);
}
if (find == null)
{
this.fplist.Add(user);
CheckSameFPs(user);
}
else
{
this.fplist.Remove(find);
this.fplist.Add(user);
CheckSameFPs(user);
}
GetLogger().Trace("FP:" + user.hash);
}
catch (Exception e)
{
GetLogger().Warn(e);
GetLogger().Trace("Something went wrong. The User IP = {0}, Packet Hex Bytes = {1}", client.IPAddress, ByteArrayExtension.HexDump(packet.GetBytes()));
}
packet.Replace(new Packet(0x2002));
return(true);
}
if (packet.Opcode == 0xA102)
{
if (ip_enabled)
{
List <IClient> ips = GetSameIPs(client);
if (ips.Count > ip_limit)
{
Packet resp = new Packet(packet.Opcode, packet.Encrypted, packet.Massive);
resp.WriteUInt8(0x02);
resp.WriteUInt8(0xF);
resp.Lock();
packet.Replace(resp);
}
}
if (fp_enabled)
{
List <fp> fps = GetSameFps(client);
if (fps.Count > fp_limit || fps.Count == 0)
{
Packet resp = new Packet(packet.Opcode, packet.Encrypted, packet.Massive);
resp.WriteUInt8(0x02);
resp.WriteUInt8(0xF);
resp.Lock();
packet.Replace(resp);
}
}
}
return(true);
}
List <fp> GetSameFps(IClient client)
{
fp find = this.fplist.Find(x => x.client == client);
return(this.fplist.FindAll(x => x.hash == find.hash));
}