internal static Rcon Authorize(ConnectionInfo conInfo, string msg)
{
return(new QueryMasterBase().Invoke <Rcon>(() =>
{
RconSource obj = new RconSource(conInfo);
obj.socket = new TcpQuery(conInfo);
byte[] recvData = new byte[50];
RconSrcPacket packet = new RconSrcPacket()
{
Body = msg, Id = (int)PacketId.ExecCmd, Type = (int)PacketType.Auth
};
recvData = obj.socket.GetResponse(RconUtil.GetBytes(packet));
int header;
try
{
header = BitConverter.ToInt32(recvData, 4);
}
catch (Exception e)
{
e.Data.Add("ReceivedData", recvData == null ? new byte[1] : recvData);
throw;
}
if (header != -1)
{
return obj;
}
return obj;
}, conInfo.Retries + 1, null, conInfo.ThrowExceptions));
}
private string sendCommand(string command, bool isMultipacketResponse)
{
RconSrcPacket senPacket = new RconSrcPacket()
{
Body = command, Id = (int)PacketId.ExecCmd, Type = (int)PacketType.Exec
};
List <byte[]> recvData = socket.GetMultiPacketResponse(RconUtil.GetBytes(senPacket));
StringBuilder str = new StringBuilder();
try
{
for (int i = 0; i < recvData.Count; i++)
{
//consecutive rcon command replies start with an empty packet
if (BitConverter.ToInt32(recvData[i], 4) == (int)PacketId.Empty)
{
continue;
}
if (recvData[i].Length - BitConverter.ToInt32(recvData[i], 0) == 4)
{
str.Append(RconUtil.ProcessPacket(recvData[i]).Body);
}
else
{
str.Append(RconUtil.ProcessPacket(recvData[i]).Body + Util.BytesToString(recvData[++i].Take(recvData[i].Length - 2).ToArray()));
}
}
}
catch (Exception e)
{
e.Data.Add("ReceivedData", recvData.SelectMany(x => x).ToArray());
throw;
}
return(str.ToString());
}
internal async Task <RconSrcPacket> GetResponseAsync(RconSrcPacket senPacket)
{
if (_procTask == null)
{
throw new QueryMasterException($"{nameof(TcpQuery)} must be initialized before calling {nameof(GetResponseAsync)}");
}
if (_procTask.IsCompleted)
{
throw new QueryMasterException("Receive thread is in a failed state");
}
var tcs = new TaskCompletionSource <RconSrcPacket>();
var handler = new OnPacketEventHandler((data, exception) =>
{
if (data != null)
{
var packet = RconUtil.ProcessPacket(data);
if (packet.Id == senPacket.Id)
{
tcs.SetResult(packet);
}
}
if (exception != null)
{
tcs.SetException(exception);
}
});
try
{
await _ss.WaitAsync();
OnPacket += handler;
try
{
SendData(RconUtil.GetBytes(senPacket));
}
catch (Exception ex) { throw new QueryMasterException("Failed to send packet", ex); }
if (await Task.WhenAny(tcs.Task, Task.Delay(_conInfo.ReceiveTimeout)) == tcs.Task)
{
return(tcs.Task.Result);
}
else
{
return(null);
}
}
finally
{
OnPacket -= handler;
_ss.Release();
}
}
private void _proc_callback()
{
try
{
var buffer = new List <byte>();
byte[] recvData = new byte[BufferSize];
int size = 0;
while (true)
{
int count = 0;
Exception lastException = null;
try
{
count = Receive(recvData);
} catch (Exception ex) { lastException = ex; }
if (lastException != null)
{
OnPacket?.Invoke(null, new QueryMasterException("Receive failed", lastException));
break;
}
if (count > 0)
{
buffer.AddRange(recvData.Take(count));
while (RconUtil.IsPacket(buffer.ToArray(), out size))
{
var packet = buffer.Take(size).ToArray();
OnPacket?.Invoke(packet, null);
buffer.RemoveRange(0, size);
}
}
else
{
OnPacket?.Invoke(null, new QueryMasterException("Receive failed because socket was shutdown by remote host"));
break;
}
}
}
catch (Exception) { }
}
private string sendCommand(string command, bool isMultipacketResponse)
{
RconSrcPacket senPacket = new RconSrcPacket()
{
Body = command, Id = (int)PacketId.ExecCmd, Type = (int)PacketType.Exec
};
List <byte[]> recvData = socket.GetMultiPacketResponse(RconUtil.GetBytes(senPacket));
StringBuilder str = new StringBuilder();
bool lastPacket = false;
bool firstPacket = false;
try
{
for (int i = 0; i < recvData.Count; i++)
{
if (BitConverter.ToInt32(recvData[i], 4) == (int)PacketId.Empty)
{
continue;
}
if (recvData[i].Length - BitConverter.ToInt32(recvData[i], 0) == 4)
{
str.Append(RconUtil.ProcessPacket(recvData[i]).Body);
}
else
{
lastPacket = (i == recvData.Count - 1);
firstPacket = i == 0;
str.Append(RconUtil.ProcessPacket(recvData[i], firstPacket, lastPacket).Body);
}
}
}
catch (Exception e)
{
e.Data.Add("ReceivedData", recvData.SelectMany(x => x).ToArray());
throw;
}
return(str.ToString());
}
private bool Reconnect()
{
if (_socket != null)
{
try
{
_socket.Dispose();
_socket = null;
}
catch { }
}
_socket = new TcpQuery(_connInfo);
//attempt to authorize this conenction
var packet = new RconSrcPacket()
{
Body = _password, Id = (int)PacketId.ExecCmd, Type = (int)PacketType.Auth
};
var buffer = _socket.GetResponse(RconUtil.GetBytes(packet));
if (buffer == null || buffer.Length < 4)
{
return(false);
}
var header = BitConverter.ToInt32(buffer, 4);
if (header == -1)
{
return(false);
}
_socket.Init();
return(true);
}