private void CheckTimeTick(byte[] buffer, ref Client client)
{
uint TickSvrNow = (uint)(int.MaxValue & (Environment.TickCount - client.TickCltUnique));
MSG_ZACL_CHK_TIMETICK cTick = new MSG_ZACL_CHK_TIMETICK();
cTick.Deserialize(ref buffer);
if (client.TickCltPre == 0)
{
//client.TickSvrPre = cTick.dwTickSvr;
client.TickSvrPre = TickSvrNow;
client.TickCltPre = cTick.dwTickClt;
client.TickCountPre = cTick.dwTickCount;
return;
}
if (cTick.dwTickCount - client.TickCountPre != 1)
{
Logger.WriteSDB(string.Format("[Index] {0} {1} {2} Pre:{3} now:{4} SendTime:{5} {6}", client.Account, client.Character, client.IPadress, client.TickCountPre, cTick.dwTickCount, cTick.dwTickClt - client.TickCltPre, TickSvrNow - client.TickSvr));
client.TickCountPre = cTick.dwTickCount++;
client.TickCount = cTick.dwTickCount;
return;
}
if (cTick.dwTickSvr != client.TickSvr)
{
Logger.WriteSDB(string.Format("[Hack] {0} {1} {2} Changed SvrTick:{3}->{4} {5}", client.Account, client.Character, client.IPadress, client.TickSvr, cTick.dwTickSvr, TickSvrNow - client.TickSvr));
RemoveClient(client.Uid, 4);
return;
}
long TickSvrDiff = Math.Abs(TickSvrNow - client.TickSvrPre);
long TickCltDiff = Math.Abs(cTick.dwTickClt - client.TickCltPre);
if (Math.Abs(TickSvrDiff - TickCltDiff) > 500)
{
/*
* Logger.WriteSDB(string.Format("[Hack] {0} {1} {2} {3} {4} {5}", client.Account, client.Character, client.IPadress, TickSvrDiff, TickCltDiff, TickSvrNow - client.TickSvr));
* RemoveClient(client.Uid, 4);
* return;
* */
if (++client.TickErrCount > 1)
{
Logger.WriteSDB(string.Format("[Hack] {0} {1} {2} {3} {4} {5}", client.Account, client.Character, client.IPadress, TickSvrDiff, TickCltDiff, TickSvrNow - client.TickSvr));
RemoveClient(client.Uid, 4);
return;
}
client.TickCountPre = cTick.dwTickCount;
client.TickCltPre = cTick.dwTickClt;
client.TickSvrPre = TickSvrNow;
return;
}
client.TickCountPre = cTick.dwTickCount;
client.TickCltPre = cTick.dwTickClt;
client.TickSvrPre = TickSvrNow;
//client.TickSvrPre = cTick.dwTickSvr;
client.TickErrCount = 0;
}
/// <summary>
/// 5초마다 모든 클라이언트에 Tick요청 패킷을 보낸다. 스피드 핵 탐지에 사용.
/// </summary>
private void ReqTimeTick_Tick(Object state)
{
foreach (var player in _Players.Where(x => x.Value.ZoneStatus != Config.AS_ID).ToList())
{
Client client = player.Value;
client.TickSvr = (uint)(int.MaxValue & (Environment.TickCount - client.TickCltUnique));
MSG_ZACL_CHK_TIMETICK reqTick = new MSG_ZACL_CHK_TIMETICK();
reqTick.MsgHeader.dwPCID = client.Uid;
reqTick.dwTickCount = client.TickCount++;
reqTick.dwTickSvr = client.TickSvr;
Write(ref client, reqTick.Serialize());
}
}
