/* goodG2B() - use GoodSource and BadSink */ private static void GoodG2B() { int data; /* FIX: Use a hardcoded number that won't cause underflow, overflow, divide by zero, or loss-of-precision issues */ data = 2; Hashtable dataHashtable = new Hashtable(5); dataHashtable.Add(0, data); dataHashtable.Add(1, data); dataHashtable.Add(2, data); CWE369_Divide_by_Zero__int_File_divide_72b.GoodG2BSink(dataHashtable); }
/* goodB2G() - use BadSource and GoodSink */ private static void GoodB2G() { int data; data = int.MinValue; /* Initialize data */ { try { /* read string from file into data */ using (StreamReader sr = new StreamReader("data.txt")) { /* POTENTIAL FLAW: Read data from a file */ /* This will be reading the first "line" of the file, which * could be very long if there are little or no newlines in the file */ string stringNumber = sr.ReadLine(); if (stringNumber != null) /* avoid NPD incidental warnings */ { try { data = int.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"); } } Hashtable dataHashtable = new Hashtable(5); dataHashtable.Add(0, data); dataHashtable.Add(1, data); dataHashtable.Add(2, data); CWE369_Divide_by_Zero__int_File_divide_72b.GoodB2GSink(dataHashtable); }