/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE601_Open_Redirect__Servlet_database_22a.java
Label Definition File: CWE601_Open_Redirect__Servlet.label.xml
Template File: sources-sink-22a.tmpl.java
*/
/*
 * @description
 * CWE: 601 Open Redirect
 * BadSource: database Read data from a database
 * GoodSource: A hardcoded string
 * Sinks:
 *    BadSink : place redirect string directly into redirect api call
 * 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.*;

import java.net.URI;
import java.net.URISyntaxException;

public class CWE601_Open_Redirect__Servlet_database_22a extends AbstractTestCaseServlet
{
    /* The public static variable below is used to drive control flow in the source function.
     * The public static variable mimics a global variable in the C/C++ language family. */
    public static boolean badPublicStatic = false;

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

        badPublicStatic = true;
        data = (new CWE601_Open_Redirect__Servlet_database_22b()).badSource(request, response);

        if (data != null)
        {
            /* This prevents \r\n (and other chars) and should prevent incidentals such
             * as HTTP Response Splitting and HTTP Header Injection.
             */
            URI uri;
            try
            {
                uri = new URI(data);
            }
            catch (URISyntaxException exceptURISyntax)
            {
                response.getWriter().write("Invalid redirect URL");
                return;
            }
            /* POTENTIAL FLAW: redirect is sent verbatim; escape the string to prevent ancillary issues like XSS, Response splitting etc */
            response.sendRedirect(data);
            return;
        }

    }

    /* The public static variables below are used to drive control flow in the source functions.
     * The public static variable mimics a global variable in the C/C++ language family. */
    public static boolean goodG2B1PublicStatic = false;
    public static boolean goodG2B2PublicStatic = false;

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

    /* goodG2B1() - use goodsource and badsink by setting the static variable to false instead of true */
    private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;

        goodG2B1PublicStatic = false;
        data = (new CWE601_Open_Redirect__Servlet_database_22b()).goodG2B1Source(request, response);

        if (data != null)
        {
            /* This prevents \r\n (and other chars) and should prevent incidentals such
             * as HTTP Response Splitting and HTTP Header Injection.
             */
            URI uri;
            try
            {
                uri = new URI(data);
            }
            catch (URISyntaxException exceptURISyntax)
            {
                response.getWriter().write("Invalid redirect URL");
                return;
            }
            /* POTENTIAL FLAW: redirect is sent verbatim; escape the string to prevent ancillary issues like XSS, Response splitting etc */
            response.sendRedirect(data);
            return;
        }

    }

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

        goodG2B2PublicStatic = true;
        data = (new CWE601_Open_Redirect__Servlet_database_22b()).goodG2B2Source(request, response);

        if (data != null)
        {
            /* This prevents \r\n (and other chars) and should prevent incidentals such
             * as HTTP Response Splitting and HTTP Header Injection.
             */
            URI uri;
            try
            {
                uri = new URI(data);
            }
            catch (URISyntaxException exceptURISyntax)
            {
                response.getWriter().write("Invalid redirect URL");
                return;
            }
            /* POTENTIAL FLAW: redirect is sent verbatim; escape the string to prevent ancillary issues like XSS, Response splitting etc */
            response.sendRedirect(data);
            return;
        }

    }

    /* 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);
    }

}
