/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE81_XSS_Error_Message__Servlet_getCookies_Servlet_07.java
Label Definition File: CWE81_XSS_Error_Message__Servlet.label.xml
Template File: sources-sink-07.tmpl.java
*/
/*
* @description
* CWE: 81 Cross Site Scripting (XSS) in Error Message
* BadSource: getCookies_Servlet Read data from the first cookie using getCookies()
* GoodSource: A hardcoded string
* BadSink: sendErrorServlet XSS in sendError
* Flow Variant: 07 Control flow: if(privateFive==5) and if(privateFive!=5)
*
* */





import javax.servlet.http.*;


public class CWE81_XSS_Error_Message__Servlet_getCookies_Servlet_07 extends AbstractTestCaseServlet
{
    /* The variable below is not declared "final", but is never assigned
     * any other value so a tool should be able to identify that reads of
     * this will always give its initialized value.
     */
    private int privateFive = 5;

    /* uses badsource and badsink */
    public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;
        if (privateFive == 5)
        {
            data = ""; /* initialize data in case there are no cookies */
            /* Read data from cookies */
            {
                Cookie cookieSources[] = request.getCookies();
                if (cookieSources != null)
                {
                    /* POTENTIAL FLAW: Read data from the first cookie value */
                    data = cookieSources[0].getValue();
                }
            }
        }
        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 = null;
        }

        if (data != null)
        {
            /* POTENTIAL FLAW: script code (e.g. id=<script>alert('xss')</script>) is sent to the client;
            * The built-in J2EE server automatically does some HTML entity encoding.
            * Therefore, to test this, change response.sendError to response.getWriter().println and remove the 404,
            */
            response.sendError(404, "<br>bad() - Parameter name has value " + data);
        }

    }

    /* goodG2B1() - use goodsource and badsink by changing privateFive==5 to privateFive!=5 */
    private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;
        if (privateFive != 5)
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure data is inititialized before the Sink to avoid compiler errors */
            data = null;
        }
        else
        {

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

        }

        if (data != null)
        {
            /* POTENTIAL FLAW: script code (e.g. id=<script>alert('xss')</script>) is sent to the client;
            * The built-in J2EE server automatically does some HTML entity encoding.
            * Therefore, to test this, change response.sendError to response.getWriter().println and remove the 404,
            */
            response.sendError(404, "<br>bad() - Parameter name has value " + data);
        }

    }

    /* goodG2B2() - use goodsource and badsink by reversing statements in if */
    private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;
        if (privateFive == 5)
        {
            /* FIX: Use a hardcoded string */
            data = "foo";
        }
        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 = null;
        }

        if (data != null)
        {
            /* POTENTIAL FLAW: script code (e.g. id=<script>alert('xss')</script>) is sent to the client;
            * The built-in J2EE server automatically does some HTML entity encoding.
            * Therefore, to test this, change response.sendError to response.getWriter().println and remove the 404,
            */
            response.sendError(404, "<br>bad() - Parameter name has value " + data);
        }

    }

    public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        goodG2B1(request, response);
        goodG2B2(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);
    }
}
