/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE601_Open_Redirect__Servlet_URLConnection_61a.java
Label Definition File: CWE601_Open_Redirect__Servlet.label.xml
Template File: sources-sink-61a.tmpl.java
*/
/*
 * @description
 * CWE: 601 Open Redirect
 * BadSource: URLConnection Read data from a web server with URLConnection
 * GoodSource: A hardcoded string
 * Sinks:
 *    BadSink : place redirect string directly into redirect api call
 * Flow Variant: 61 Data flow: data returned from one method to another in different classes in the same package
 *
 * */





import javax.servlet.http.*;

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

public class CWE601_Open_Redirect__Servlet_URLConnection_61a extends AbstractTestCaseServlet
{
    public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data = (new CWE601_Open_Redirect__Servlet_URLConnection_61b()).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;
        }

    }

    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 = (new CWE601_Open_Redirect__Servlet_URLConnection_61b()).goodG2BSource(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);
    }
}
