/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE601_Open_Redirect__Servlet_database_16.java
Label Definition File: CWE601_Open_Redirect__Servlet.label.xml
Template File: sources-sink-16.tmpl.java
*/
/*
* @description
* CWE: 601 Open Redirect
* BadSource: database Read data from a database
* GoodSource: A hardcoded string
* BadSink:  place redirect string directly into redirect api call
* Flow Variant: 16 Control flow: while(true)
*
* */





import javax.servlet.http.*;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import java.util.logging.Level;

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

public class CWE601_Open_Redirect__Servlet_database_16 extends AbstractTestCaseServlet
{
    /* uses badsource and badsink */
    public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;

        while (true)
        {
            data = ""; /* Initialize data */
            /* Read data from a database */
            {
                Connection connection = null;
                PreparedStatement preparedStatement = null;
                ResultSet resultSet = null;
                try
                {
                    /* setup the connection */
                    connection = IO.getDBConnection();
                    /* prepare and execute a (hardcoded) query */
                    preparedStatement = connection.prepareStatement("select name from users where id=0");
                    resultSet = preparedStatement.executeQuery();
                    /* POTENTIAL FLAW: Read data from a database query resultset */
                    data = resultSet.getString(1);
                }
                catch (SQLException exceptSql)
                {
                    IO.logger.log(Level.WARNING, "Error with SQL statement", exceptSql);
                }
                finally
                {
                    /* Close database objects */
                    try
                    {
                        if (resultSet != null)
                        {
                            resultSet.close();
                        }
                    }
                    catch (SQLException exceptSql)
                    {
                        IO.logger.log(Level.WARNING, "Error closing ResultSet", exceptSql);
                    }

                    try
                    {
                        if (preparedStatement != null)
                        {
                            preparedStatement.close();
                        }
                    }
                    catch (SQLException exceptSql)
                    {
                        IO.logger.log(Level.WARNING, "Error closing PreparedStatement", exceptSql);
                    }

                    try
                    {
                        if (connection != null)
                        {
                            connection.close();
                        }
                    }
                    catch (SQLException exceptSql)
                    {
                        IO.logger.log(Level.WARNING, "Error closing Connection", exceptSql);
                    }
                }
            }
            break;
        }

        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;
        }

    }

    /* goodG2B() - use goodsource and badsink */
    private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;

        while (true)
        {
            /* FIX: Use a hardcoded string */
            data = "foo";
            break;
        }

        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);
    }

    /* 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);
    }
}
