/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE470_Unsafe_Reflection__getParameter_Servlet_31.java
Label Definition File: CWE470_Unsafe_Reflection.label.xml
Template File: sources-sink-31.tmpl.java
*/
/*
 * @description
 * CWE: 470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
 * BadSource: getParameter_Servlet Read data from a querystring using getParameter()
 * GoodSource: Set data to a hardcoded class name
 * Sinks:
 *    BadSink : Instantiate class named in data
 * Flow Variant: 31 Data flow: make a copy of data within the same method
 *
 * */





import javax.servlet.http.*;


public class CWE470_Unsafe_Reflection__getParameter_Servlet_31 extends AbstractTestCaseServlet
{
    /* uses badsource and badsink */
    public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String dataCopy;
        {
            String data;

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

            dataCopy = data;
        }
        {
            String data = dataCopy;

            /* POTENTIAL FLAW: Instantiate object of class named in data (which may be from external input) */
            Class<?> tempClass = Class.forName(data);
            Object tempClassObject = tempClass.newInstance();

            IO.writeLine(tempClassObject.toString()); /* Use tempClassObject in some way */

        }
    }

    public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        goodG2B(request, response);
    }

    /* goodG2B() - use goodsource and badsink */
    private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String dataCopy;
        {
            String data;

            /* FIX: Use a hardcoded class name */
            data = "Testing.test";

            dataCopy = data;
        }
        {
            String data = dataCopy;

            /* POTENTIAL FLAW: Instantiate object of class named in data (which may be from external input) */
            Class<?> tempClass = Class.forName(data);
            Object tempClassObject = tempClass.newInstance();

            IO.writeLine(tempClassObject.toString()); /* Use tempClassObject in some way */

        }
    }

    /* 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);
    }
}
