/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE89_SQL_Injection__getCookies_Servlet_executeUpdate_31.java
Label Definition File: CWE89_SQL_Injection.label.xml
Template File: sources-sinks-31.tmpl.java
*/
/*
 * @description
 * CWE: 89 SQL Injection
 * BadSource: getCookies_Servlet Read data from the first cookie using getCookies()
 * GoodSource: A hardcoded string
 * Sinks: executeUpdate
 *    GoodSink: Use prepared statement and executeUpdate (properly)
 *    BadSink : data concatenated into SQL statement used in executeUpdate(), which could result in SQL Injection
 * Flow Variant: 31 Data flow: make a copy of data within the same method
 *
 * */




import javax.servlet.http.*;


import java.sql.*;

import java.util.logging.Level;

public class CWE89_SQL_Injection__getCookies_Servlet_executeUpdate_31 extends AbstractTestCaseServlet
{
    public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String dataCopy;
        {
            String data;

            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();
                }
            }

            dataCopy = data;
        }
        {
            String data = dataCopy;

            Connection dbConnection = null;
            Statement sqlStatement = null;

            try
            {
                dbConnection = IO.getDBConnection();
                sqlStatement = dbConnection.createStatement();

                /* POTENTIAL FLAW: data concatenated into SQL statement used in executeUpdate(), which could result in SQL Injection */
                int rowCount = sqlStatement.executeUpdate("insert into users (status) values ('updated') where name='"+data+"'");

                IO.writeLine("Updated " + rowCount + " rows successfully.");
            }
            catch (SQLException exceptSql)
            {
                IO.logger.log(Level.WARNING, "Error getting database connection", exceptSql);
            }
            finally
            {
                try
                {
                    if (sqlStatement != null)
                    {
                        sqlStatement.close();
                    }
                }
                catch (SQLException exceptSql)
                {
                    IO.logger.log(Level.WARNING, "Error closing Statement", exceptSql);
                }

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

        }
    }

    public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        goodG2B(request, response);
        goodB2G(request, response);
    }

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

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

            dataCopy = data;
        }
        {
            String data = dataCopy;

            Connection dbConnection = null;
            Statement sqlStatement = null;

            try
            {
                dbConnection = IO.getDBConnection();
                sqlStatement = dbConnection.createStatement();

                /* POTENTIAL FLAW: data concatenated into SQL statement used in executeUpdate(), which could result in SQL Injection */
                int rowCount = sqlStatement.executeUpdate("insert into users (status) values ('updated') where name='"+data+"'");

                IO.writeLine("Updated " + rowCount + " rows successfully.");
            }
            catch (SQLException exceptSql)
            {
                IO.logger.log(Level.WARNING, "Error getting database connection", exceptSql);
            }
            finally
            {
                try
                {
                    if (sqlStatement != null)
                    {
                        sqlStatement.close();
                    }
                }
                catch (SQLException exceptSql)
                {
                    IO.logger.log(Level.WARNING, "Error closing Statement", exceptSql);
                }

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

        }
    }

    /* goodB2G() - use badsource and goodsink */
    private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String dataCopy;
        {
            String data;

            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();
                }
            }

            dataCopy = data;
        }
        {
            String data = dataCopy;

            Connection dbConnection = null;
            PreparedStatement sqlStatement = null;

            try
            {
                /* FIX: Use prepared statement and executeUpdate (properly) */
                dbConnection = IO.getDBConnection();
                sqlStatement = dbConnection.prepareStatement("insert into users (status) values ('updated') where name=?");
                sqlStatement.setString(1, data);

                int rowCount = sqlStatement.executeUpdate();

                IO.writeLine("Updated " + rowCount + " rows successfully.");
            }
            catch (SQLException exceptSql)
            {
                IO.logger.log(Level.WARNING, "Error getting database connection", exceptSql);
            }
            finally
            {
                try
                {
                    if (sqlStatement != null)
                    {
                        sqlStatement.close();
                    }
                }
                catch (SQLException exceptSql)
                {
                    IO.logger.log(Level.WARNING, "Error closing PreparedStatement", exceptSql);
                }

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

        }
    }

    /* 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);
    }
}
