/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE369_Divide_by_Zero__int_Property_divide_45.java
Label Definition File: CWE369_Divide_by_Zero__int.label.xml
Template File: sources-sinks-45.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: 45 Data flow: data passed as a private class member variable from one function to another in the same class
 *
 * */






import java.util.logging.Level;

public class CWE369_Divide_by_Zero__int_Property_divide_45 extends AbstractTestCase
{
    private int dataBad;
    private int dataGoodG2B;
    private int dataGoodB2G;

    private void badSink() throws Throwable
    {
        int data = dataBad;

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

    }

    public void bad() throws Throwable
    {
        int data;

        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);
            }
        }

        dataBad = data;
        badSink();
    }

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

    private void goodG2BSink() throws Throwable
    {
        int data = dataGoodG2B;

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

    }

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

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

        dataGoodG2B = data;
        goodG2BSink();
    }

    private void goodB2GSink() throws Throwable
    {
        int data = dataGoodB2G;

        /* 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");
        }

    }

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

        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);
            }
        }

        dataGoodB2G = data;
        goodB2GSink();
    }

    /* 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);
    }
}
