/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE601_Open_Redirect__Servlet_getQueryString_Servlet_51a.java
Label Definition File: CWE601_Open_Redirect__Servlet.label.xml
Template File: sources-sink-51a.tmpl.java
*/
/*
 * @description
 * CWE: 601 Open Redirect
 * BadSource: getQueryString_Servlet Parse id param out of the URL query string (without using getParameter())
 * GoodSource: A hardcoded string
 * BadSink:  place redirect string directly into redirect api call
 * Flow Variant: 51 Data flow: data passed as an argument from one function to another in different classes in the same package
 *
 * */





import javax.servlet.http.*;

import java.util.StringTokenizer;

public class CWE601_Open_Redirect__Servlet_getQueryString_Servlet_51a extends AbstractTestCaseServlet
{
    public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;

        data = ""; /* initialize data in case id is not in query string */

        /* POTENTIAL FLAW: Parse id param out of the URL querystring (without using getParameter()) */
        {
            StringTokenizer tokenizer = new StringTokenizer(request.getQueryString(), "&");
            while (tokenizer.hasMoreTokens())
            {
                String token = tokenizer.nextToken(); /* a token will be like "id=foo" */
                if(token.startsWith("id=")) /* check if we have the "id" parameter" */
                {
                    data = token.substring(3); /* set data to "foo" */
                    break; /* exit while loop */
                }
            }
        }

        (new CWE601_Open_Redirect__Servlet_getQueryString_Servlet_51b()).badSink(data , request, response );
    }

    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 data;

        /* FIX: Use a hardcoded string */
        data = "foo";

        (new CWE601_Open_Redirect__Servlet_getQueryString_Servlet_51b()).goodG2BSink(data , request, response );
    }

    /* 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);
    }

}
