/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE89_SQL_Injection__File_prepareStatement_42.java
Label Definition File: CWE89_SQL_Injection.label.xml
Template File: sources-sinks-42.tmpl.java
*/
/*
 * @description
 * CWE: 89 SQL Injection
 * BadSource: File Read data from file (named c:\data.txt)
 * 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: 42 Data flow: data returned from one method to another in the same class
 *
 * */






import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.FileInputStream;
import java.io.File;
import java.io.IOException;

import java.util.logging.Level;

import java.sql.*;


public class CWE89_SQL_Injection__File_prepareStatement_42 extends AbstractTestCase
{
    private String badSource() throws Throwable
    {
        String data;

        data = ""; /* Initialize data */
        {
            File file = new File("C:\\data.txt");
            FileInputStream streamFileInput = null;
            InputStreamReader readerInputStream = null;
            BufferedReader readerBuffered = null;

            try
            {
                /* read string from file into data */
                streamFileInput = new FileInputStream(file);
                readerInputStream = new InputStreamReader(streamFileInput, "UTF-8");
                readerBuffered = new BufferedReader(readerInputStream);

                /* POTENTIAL FLAW: Read data from a file */
                /* This will be reading the first "line" of the file, which
                 * could be very long if there are little or no newlines in the file */
                data = readerBuffered.readLine();
            }
            catch (IOException exceptIO)
            {
                IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
            }
            finally
            {
                /* Close stream reading objects */
                try
                {
                    if (readerBuffered != null)
                    {
                        readerBuffered.close();
                    }
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO);
                }

                try
                {
                    if (readerInputStream != null)
                    {
                        readerInputStream.close();
                    }
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO);
                }

                try
                {
                    if (streamFileInput != null)
                    {
                        streamFileInput.close();
                    }
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error closing FileInputStream", exceptIO);
                }
            }
        }

        return data;
    }

    public void bad() throws Throwable
    {
        String data = badSource();

        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);
            }
        }

    }

    /* goodG2B() - use goodsource and badsink */
    private String goodG2BSource() throws Throwable
    {
        String data;

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

        return data;
    }

    private void goodG2B() throws Throwable
    {
        String data = goodG2BSource();

        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);
            }
        }

    }

    /* goodB2G() - use badsource and goodsink */
    private String goodB2GSource() throws Throwable
    {
        String data;

        data = ""; /* Initialize data */
        {
            File file = new File("C:\\data.txt");
            FileInputStream streamFileInput = null;
            InputStreamReader readerInputStream = null;
            BufferedReader readerBuffered = null;

            try
            {
                /* read string from file into data */
                streamFileInput = new FileInputStream(file);
                readerInputStream = new InputStreamReader(streamFileInput, "UTF-8");
                readerBuffered = new BufferedReader(readerInputStream);

                /* POTENTIAL FLAW: Read data from a file */
                /* This will be reading the first "line" of the file, which
                 * could be very long if there are little or no newlines in the file */
                data = readerBuffered.readLine();
            }
            catch (IOException exceptIO)
            {
                IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
            }
            finally
            {
                /* Close stream reading objects */
                try
                {
                    if (readerBuffered != null)
                    {
                        readerBuffered.close();
                    }
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO);
                }

                try
                {
                    if (readerInputStream != null)
                    {
                        readerInputStream.close();
                    }
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO);
                }

                try
                {
                    if (streamFileInput != null)
                    {
                        streamFileInput.close();
                    }
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error closing FileInputStream", exceptIO);
                }
            }
        }

        return data;
    }

    private void goodB2G() throws Throwable
    {
        String data = goodB2GSource();

        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);
            }
        }

    }

    public void good() throws Throwable
    {
        goodG2B();
        goodB2G();
    }

    /* 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);
    }
}
