/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE89_SQL_Injection__getParameter_Servlet_prepareStatement_16.java
Label Definition File: CWE89_SQL_Injection.label.xml
Template File: sources-sinks-16.tmpl.java
*/
/*
* @description
* CWE: 89 SQL Injection
* BadSource: getParameter_Servlet Read data from a querystring using getParameter()
* GoodSource: A hardcoded string
* Sinks: prepareStatement
*    GoodSink: Use prepared statement and execute (properly)
*    BadSink : data concatenated into SQL statement used in prepareStatement() call, which could result in SQL Injection
* Flow Variant: 16 Control flow: while(true)
*
* */




import javax.servlet.http.*;


import java.sql.*;

import java.util.logging.Level;

public class CWE89_SQL_Injection__getParameter_Servlet_prepareStatement_16 extends AbstractTestCaseServlet
{
    public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;

        while (true)
        {
            /* POTENTIAL FLAW: Read data from a querystring using getParameter */
            data = request.getParameter("name");
            break;
        }

        while (true)
        {
            Connection dbConnection = null;
            PreparedStatement sqlStatement = null;
            try
            {
                /* POTENTIAL FLAW: data concatenated into SQL statement used in prepareStatement() call, which could result in SQL Injection */
                dbConnection = IO.getDBConnection();
                sqlStatement = dbConnection.prepareStatement("insert into users (status) values ('updated') where name='"+data+"'");
                Boolean result = sqlStatement.execute();
                if (result)
                {
                    IO.writeLine("Name, " + data + ", updated successfully");
                }
                else
                {
                    IO.writeLine("Unable to update records for user: " + data);
                }
            }
            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);
                }
            }
            break;
        }
    }

    /* 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;
        }

        while (true)
        {
            Connection dbConnection = null;
            PreparedStatement sqlStatement = null;
            try
            {
                /* POTENTIAL FLAW: data concatenated into SQL statement used in prepareStatement() call, which could result in SQL Injection */
                dbConnection = IO.getDBConnection();
                sqlStatement = dbConnection.prepareStatement("insert into users (status) values ('updated') where name='"+data+"'");
                Boolean result = sqlStatement.execute();
                if (result)
                {
                    IO.writeLine("Name, " + data + ", updated successfully");
                }
                else
                {
                    IO.writeLine("Unable to update records for user: " + data);
                }
            }
            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);
                }
            }
            break;
        }

    }

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

        while (true)
        {
            /* POTENTIAL FLAW: Read data from a querystring using getParameter */
            data = request.getParameter("name");
            break;
        }

        while (true)
        {
            Connection dbConnection = null;
            PreparedStatement sqlStatement = null;
            try
            {
                /* FIX: Use prepared statement and execute (properly) */
                dbConnection = IO.getDBConnection();
                sqlStatement = dbConnection.prepareStatement("insert into users (status) values ('updated') where name=?");
                sqlStatement.setString(1, data);
                Boolean result = sqlStatement.execute();
                if (result)
                {
                    IO.writeLine("Name, " + data + ", updated successfully");
                }
                else
                {
                    IO.writeLine("Unable to update records for user: " + data);
                }
            }
            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);
                }
            }
            break;
        }
    }

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