/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE129_Improper_Validation_of_Array_Index__getParameter_Servlet_array_size_22b.java
Label Definition File: CWE129_Improper_Validation_of_Array_Index.label.xml
Template File: sources-sinks-22b.tmpl.java
*/
/*
 * @description
 * CWE: 129 Improper Validation of Array Index
 * BadSource: getParameter_Servlet Read data from a querystring using getParameter()
 * GoodSource: A hardcoded non-zero, non-min, non-max, even number
 * Sinks: array_size
 *    GoodSink: data is used to set the size of the array and it must be greater than 0
 *    BadSink : data is used to set the size of the array, but it could be set to 0
 * Flow Variant: 22 Control flow: Flow controlled by value of a public static variable. Sink functions are in a separate file from sources.
 *
 * */




import javax.servlet.http.*;

public class CWE129_Improper_Validation_of_Array_Index__getParameter_Servlet_array_size_22b
{
    public void badSink(int data , HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        if (CWE129_Improper_Validation_of_Array_Index__getParameter_Servlet_array_size_22a.badPublicStatic)
        {
            int array[] = null;
            /* POTENTIAL FLAW: Verify that data is non-negative, but still allow it to be 0 */
            if (data >= 0)
            {
                array = new int[data];
            }
            else
            {
                IO.writeLine("Array size is negative");
            }
            /* do something with the array */
            array[0] = 5;
            IO.writeLine(array[0]);
        }
        else
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure data is inititialized before the Sink to avoid compiler errors */
            data = 0;
        }
    }

    /* goodB2G1() - use badsource and goodsink by setting the static variable to false instead of true */
    public void goodB2G1Sink(int data , HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        if (CWE129_Improper_Validation_of_Array_Index__getParameter_Servlet_array_size_22a.goodB2G1PublicStatic)
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure data is inititialized before the Sink to avoid compiler errors */
            data = 0;
        }
        else
        {

            /* Need to ensure that the array is of size > 3  and < 101 due to the GoodSource and the large_fixed BadSource */
            int array[] = null;

            /* FIX: Verify that data is non-negative AND greater than 0 */
            if (data > 0)
            {
                array = new int[data];
            }
            else
            {
                IO.writeLine("Array size is negative");
            }

            /* do something with the array */
            array[0] = 5;
            IO.writeLine(array[0]);

        }
    }

    /* goodB2G2() - use badsource and goodsink by reversing the blocks in the if in the sink function */
    public void goodB2G2Sink(int data , HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        if (CWE129_Improper_Validation_of_Array_Index__getParameter_Servlet_array_size_22a.goodB2G2PublicStatic)
        {
            /* Need to ensure that the array is of size > 3  and < 101 due to the GoodSource and the large_fixed BadSource */
            int array[] = null;
            /* FIX: Verify that data is non-negative AND greater than 0 */
            if (data > 0)
            {
                array = new int[data];
            }
            else
            {
                IO.writeLine("Array size is negative");
            }
            /* do something with the array */
            array[0] = 5;
            IO.writeLine(array[0]);
        }
        else
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure data is inititialized before the Sink to avoid compiler errors */
            data = 0;
        }
    }

    /* goodG2B() - use goodsource and badsink */
    public void goodG2BSink(int data , HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        if (CWE129_Improper_Validation_of_Array_Index__getParameter_Servlet_array_size_22a.goodG2BPublicStatic)
        {
            int array[] = null;
            /* POTENTIAL FLAW: Verify that data is non-negative, but still allow it to be 0 */
            if (data >= 0)
            {
                array = new int[data];
            }
            else
            {
                IO.writeLine("Array size is negative");
            }
            /* do something with the array */
            array[0] = 5;
            IO.writeLine(array[0]);
        }
        else
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure data is inititialized before the Sink to avoid compiler errors */
            data = 0;
        }
    }
}
