/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE89_SQL_Injection__connect_tcp_executeQuery_73b.java
Label Definition File: CWE89_SQL_Injection.label.xml
Template File: sources-sinks-73b.tmpl.java
*/
/*
 * @description
 * CWE: 89 SQL Injection
 * BadSource: connect_tcp Read data using an outbound tcp connection
 * GoodSource: A hardcoded string
 * Sinks: executeQuery
 *    GoodSink: Use prepared statement and executeQuery (properly)
 *    BadSink : data concatenated into SQL statement used in executeQuery(), which could result in SQL Injection
 * Flow Variant: 73 Data flow: data passed in a LinkedList from one method to another in different source files in the same package
 *
 * */



import java.util.LinkedList;



import java.sql.*;

import java.util.logging.Level;

public class CWE89_SQL_Injection__connect_tcp_executeQuery_73b
{
    public void badSink(LinkedList<String> dataLinkedList ) throws Throwable
    {
        String data = dataLinkedList.remove(2);

        Connection dbConnection = null;
        Statement sqlStatement = null;
        ResultSet resultSet = null;

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

            /* POTENTIAL FLAW: data concatenated into SQL statement used in executeQuery(), which could result in SQL Injection */
            resultSet = sqlStatement.executeQuery("select * from users where name='"+data+"'");

            IO.writeLine(resultSet.getRow()); /* Use ResultSet in some way */
        }
        catch (SQLException exceptSql)
        {
            IO.logger.log(Level.WARNING, "Error getting database connection", exceptSql);
        }
        finally
        {
            try
            {
                if (resultSet != null)
                {
                    resultSet.close();
                }
            }
            catch (SQLException exceptSql)
            {
                IO.logger.log(Level.WARNING, "Error closing ResultSet", exceptSql);
            }

            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);
            }
        }

    }

    /* goodG2B() - use GoodSource and BadSink */
    public void goodG2BSink(LinkedList<String> dataLinkedList ) throws Throwable
    {
        String data = dataLinkedList.remove(2);

        Connection dbConnection = null;
        Statement sqlStatement = null;
        ResultSet resultSet = null;

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

            /* POTENTIAL FLAW: data concatenated into SQL statement used in executeQuery(), which could result in SQL Injection */
            resultSet = sqlStatement.executeQuery("select * from users where name='"+data+"'");

            IO.writeLine(resultSet.getRow()); /* Use ResultSet in some way */
        }
        catch (SQLException exceptSql)
        {
            IO.logger.log(Level.WARNING, "Error getting database connection", exceptSql);
        }
        finally
        {
            try
            {
                if (resultSet != null)
                {
                    resultSet.close();
                }
            }
            catch (SQLException exceptSql)
            {
                IO.logger.log(Level.WARNING, "Error closing ResultSet", exceptSql);
            }

            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 */
    public void goodB2GSink(LinkedList<String> dataLinkedList ) throws Throwable
    {
        String data = dataLinkedList.remove(2);

        Connection dbConnection = null;
        PreparedStatement sqlStatement = null;
        ResultSet resultSet = null;

        try
        {
            /* FIX: Use prepared statement and executeQuery (properly) */
            dbConnection = IO.getDBConnection();
            sqlStatement = dbConnection.prepareStatement("select * from users where name=?");
            sqlStatement.setString(1, data);

            resultSet = sqlStatement.executeQuery();

            IO.writeLine(resultSet.getRow()); /* Use ResultSet in some way */
        }
        catch (SQLException exceptSql)
        {
            IO.logger.log(Level.WARNING, "Error getting database connection", exceptSql);
        }
        finally
        {
            try
            {
                if (resultSet != null)
                {
                    resultSet.close();
                }
            }
            catch (SQLException exceptSql)
            {
                IO.logger.log(Level.WARNING, "Error closing ResultSet", exceptSql);
            }

            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);
            }
        }

    }
}
