/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE190_Integer_Overflow__int_getParameter_Servlet_preinc_61b.java
Label Definition File: CWE190_Integer_Overflow__int.label.xml
Template File: sources-sinks-61b.tmpl.java
*/
/*
 * @description
 * CWE: 190 Integer Overflow
 * BadSource: getParameter_Servlet Read data from a querystring using getParameter()
 * GoodSource: A hardcoded non-zero, non-min, non-max, even number
 * Sinks: increment
 *    GoodSink: Ensure there will not be an overflow before incrementing data
 *    BadSink : Increment data, which can cause an overflow
 * Flow Variant: 61 Data flow: data returned from one method to another in different classes in the same package
 *
 * */

package testcases.CWE190_Integer_Overflow.s07;
import testcasesupport.*;

import javax.servlet.http.*;


import java.util.logging.Level;

public class CWE190_Integer_Overflow__int_getParameter_Servlet_preinc_61b
{
    public int badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        int data;

        data = Integer.MIN_VALUE; /* Initialize data */

        /* POTENTIAL FLAW: Read data from a querystring using getParameter() */
        {
            String stringNumber = request.getParameter("name");

            try
            {
                data = Integer.parseInt(stringNumber.trim());
            }
            catch(NumberFormatException exceptNumberFormat)
            {
                IO.logger.log(Level.WARNING, "Number format exception reading data from parameter 'name'", exceptNumberFormat);
            }
        }

        return data;
    }

    /* goodG2B() - use goodsource and badsink */
    public int goodG2BSource(HttpServletRequest request, HttpServletResponse response) 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;

        return data;
    }

    /* goodB2G() - use badsource and goodsink */
    public int goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        int data;

        data = Integer.MIN_VALUE; /* Initialize data */

        /* POTENTIAL FLAW: Read data from a querystring using getParameter() */
        {
            String stringNumber = request.getParameter("name");

            try
            {
                data = Integer.parseInt(stringNumber.trim());
            }
            catch(NumberFormatException exceptNumberFormat)
            {
                IO.logger.log(Level.WARNING, "Number format exception reading data from parameter 'name'", exceptNumberFormat);
            }
        }

        return data;
    }
}
