/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE369_Divide_by_Zero__int_Property_divide_16.java
Label Definition File: CWE369_Divide_by_Zero__int.label.xml
Template File: sources-sinks-16.tmpl.java
*/
/*
* @description
* CWE: 369 Divide by zero
* BadSource: Property Read data from a system property
* GoodSource: A hardcoded non-zero, non-min, non-max, even number
* Sinks: divide
*    GoodSink: Check for zero before dividing
*    BadSink : Dividing by a value that may be zero
* Flow Variant: 16 Control flow: while(true)
*
* */






import java.util.logging.Level;

public class CWE369_Divide_by_Zero__int_Property_divide_16 extends AbstractTestCase
{
    public void bad() throws Throwable
    {
        int data;

        while (true)
        {
            data = Integer.MIN_VALUE; /* Initialize data */
            /* get system property user.home */
            /* POTENTIAL FLAW: Read data from a system property */
            {
                String stringNumber = System.getProperty("user.home");
                try
                {
                    data = Integer.parseInt(stringNumber.trim());
                }
                catch(NumberFormatException exceptNumberFormat)
                {
                    IO.logger.log(Level.WARNING, "Number format exception parsing data from string", exceptNumberFormat);
                }
            }
            break;
        }

        while (true)
        {
            /* POTENTIAL FLAW: Zero denominator will cause an issue.  An integer division will
            result in an exception. */
            IO.writeLine("bad: 100/" + data + " = " + (100 / data) + "\n");
            break;
        }
    }

    /* goodG2B() - use goodsource and badsink */
    private void goodG2B() throws Throwable
    {
        int data;

        while (true)
        {
            /* FIX: Use a hardcoded number that won't cause underflow, overflow, divide by zero, or loss-of-precision issues */
            data = 2;
            break;
        }

        while (true)
        {
            /* POTENTIAL FLAW: Zero denominator will cause an issue.  An integer division will
            result in an exception. */
            IO.writeLine("bad: 100/" + data + " = " + (100 / data) + "\n");
            break;
        }

    }

    /* goodB2G() - use badsource and goodsink */
    private void goodB2G() throws Throwable
    {
        int data;

        while (true)
        {
            data = Integer.MIN_VALUE; /* Initialize data */
            /* get system property user.home */
            /* POTENTIAL FLAW: Read data from a system property */
            {
                String stringNumber = System.getProperty("user.home");
                try
                {
                    data = Integer.parseInt(stringNumber.trim());
                }
                catch(NumberFormatException exceptNumberFormat)
                {
                    IO.logger.log(Level.WARNING, "Number format exception parsing data from string", exceptNumberFormat);
                }
            }
            break;
        }

        while (true)
        {
            /* FIX: test for a zero denominator */
            if (data != 0)
            {
                IO.writeLine("100/" + data + " = " + (100 / data) + "\n");
            }
            else
            {
                IO.writeLine("This would result in a divide by zero");
            }
            break;
        }
    }

    public void good() throws Throwable
    {
        goodG2B();
        goodB2G();
    }

    /* Below is the main(). It is only used when building this testcase on
     * its own for testing or for building a binary to use in testing binary
     * analysis tools. It is not used when compiling all the testcases as one
     * application, which is how source code analysis tools are tested.
     */
    public static void main(String[] args) throws ClassNotFoundException,
           InstantiationException, IllegalAccessException
    {
        mainFromParent(args);
    }
}
