/* goodG2B() - use goodsource and badsink */ private static void GoodG2B() { float data; /* FIX: Use a hardcoded number that won't cause underflow, overflow, divide by zero, or loss-of-precision issues */ data = 2; Container dataContainer = new Container(); dataContainer.containerOne = data; CWE197_Numeric_Truncation_Error__float_listen_tcp_to_byte_67b.GoodG2BSink(dataContainer); }
public override void Bad() { float data; data = float.MinValue; /* Initialize data */ /* Read data using a listening tcp connection */ { TcpListener listener = null; TcpClient tcpConn = null; StreamReader sr = null; /* Read data using a listening tcp connection */ try { listener = new TcpListener(IPAddress.Parse("10.10.1.10"), 39543); tcpConn = listener.AcceptTcpClient(); /* read input from socket */ sr = new StreamReader(tcpConn.GetStream()); /* FLAW: Read data using a listening tcp connection */ string stringNumber = sr.ReadLine(); if (stringNumber != null) // avoid NPD incidental warnings { try { data = float.Parse(stringNumber.Trim()); } catch (FormatException exceptNumberFormat) { IO.Logger.Log(NLog.LogLevel.Warn, exceptNumberFormat, "Number format exception parsing data from string"); } } } catch (IOException exceptIO) { IO.Logger.Log(NLog.LogLevel.Warn, exceptIO, "Error with stream reading"); } finally { /* Close stream reading objects */ try { if (sr != null) { sr.Close(); } } catch (IOException exceptIO) { IO.Logger.Log(NLog.LogLevel.Warn, exceptIO, "Error closing StreamReader"); } /* Close socket objects */ try { if (tcpConn != null) { tcpConn.Close(); } } catch (IOException exceptIO) { IO.Logger.Log(NLog.LogLevel.Warn, exceptIO, "Error closing TcpClient"); } try { if (listener != null) { listener.Stop(); } } catch (IOException exceptIO) { IO.Logger.Log(NLog.LogLevel.Warn, exceptIO, "Error closing TcpListener"); } } } Container dataContainer = new Container(); dataContainer.containerOne = data; CWE197_Numeric_Truncation_Error__float_listen_tcp_to_byte_67b.BadSink(dataContainer); }