/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE83_XSS_Attribute__Servlet_getParameter_Servlet_15.java
Label Definition File: CWE83_XSS_Attribute__Servlet.label.xml
Template File: sources-sink-15.tmpl.java
*/
/*
* @description
* CWE: 83 Cross Site Scripting (XSS) in attributes; Examples(replace QUOTE with an actual double quote): ?img_loc=http://www.google.comQUOTE%20onerror=QUOTEalert(1) and ?img_loc=http://www.google.comQUOTE%20onerror=QUOTEjavascript:alert(1)
* BadSource: getParameter_Servlet Read data from a querystring using getParameter()
* GoodSource: A hardcoded string
* BadSink: printlnServlet XSS in img src attribute
* Flow Variant: 15 Control flow: switch(6)
*
* */





import javax.servlet.http.*;


public class CWE83_XSS_Attribute__Servlet_getParameter_Servlet_15 extends AbstractTestCaseServlet
{
    /* uses badsource and badsink */
    public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data = null;

        switch (6)
        {
        case 6:
            /* POTENTIAL FLAW: Read data from a querystring using getParameter */
            data = request.getParameter("name");
            break;
        default:
            /* 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;
            break;
        }

        if (data != null)
        {
            /* POTENTIAL FLAW: Input is not verified/sanitized before use in an image tag */
            response.getWriter().println("<br>bad() - <img src=\"" + data + "\">");
        }

    }

    /* goodG2B1() - use goodsource and badsink by changing the  switch to switch(5) */
    private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data = null;

        switch (5)
        {
        case 6:
            /* 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;
            break;
        default:
            /* FIX: Use a hardcoded string */
            data = "foo";
            break;
        }

        if (data != null)
        {
            /* POTENTIAL FLAW: Input is not verified/sanitized before use in an image tag */
            response.getWriter().println("<br>bad() - <img src=\"" + data + "\">");
        }

    }

    /* goodG2B2() - use goodsource and badsink by reversing the blocks in the switch  */
    private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data = null;

        switch (6)
        {
        case 6:
            /* FIX: Use a hardcoded string */
            data = "foo";
            break;
        default:
            /* 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;
            break;
        }

        if (data != null)
        {
            /* POTENTIAL FLAW: Input is not verified/sanitized before use in an image tag */
            response.getWriter().println("<br>bad() - <img src=\"" + 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);
    }
}
