/* goodG2B() - use goodsource and badsink */
private static void GoodG2B()
{
long 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__long_NetClient_to_int_67b.GoodG2BSink(dataContainer);
}
public override void Bad()
{
long data;
data = long.MinValue; /* Initialize data */
/* read input from WebClient */
{
WebClient client = new WebClient();
StreamReader sr = null;
try
{
sr = new StreamReader(client.OpenRead("http://www.example.org/"));
/* FLAW: Read data from a web server with WebClient */
/* This will be reading the first "line" of the response body,
* which could be very long if there are no newlines in the HTML */
string stringNumber = sr.ReadLine();
if (stringNumber != null) // avoid NPD incidental warnings
{
try
{
data = long.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
{
/* clean up stream reading objects */
try
{
if (sr != null)
{
sr.Close();
}
}
catch (IOException exceptIO)
{
IO.Logger.Log(NLog.LogLevel.Warn, exceptIO, "Error closing StreamReader");
}
}
}
Container dataContainer = new Container();
dataContainer.containerOne = data;
CWE197_Numeric_Truncation_Error__long_NetClient_to_int_67b.BadSink(dataContainer);
}
