/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE89_SQL_Injection__URLConnection_execute_31.java
Label Definition File: CWE89_SQL_Injection.label.xml
Template File: sources-sinks-31.tmpl.java
*/
/*
 * @description
 * CWE: 89 SQL Injection
 * BadSource: URLConnection Read data from a web server with URLConnection
 * GoodSource: A hardcoded string
 * Sinks: execute
 *    GoodSink: Use prepared statement and execute (properly)
 *    BadSink : data concatenated into SQL statement used in execute(), which could result in SQL Injection
 * Flow Variant: 31 Data flow: make a copy of data within the same method
 *
 * */






import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;

import java.util.logging.Level;

import java.sql.*;


public class CWE89_SQL_Injection__URLConnection_execute_31 extends AbstractTestCase
{
    public void bad() throws Throwable
    {
        String dataCopy;
        {
            String data;

            data = ""; /* Initialize data */

            /* read input from URLConnection */
            {
                URLConnection urlConnection = (new URL("http://www.example.org/")).openConnection();
                BufferedReader readerBuffered = null;
                InputStreamReader readerInputStream = null;

                try
                {
                    readerInputStream = new InputStreamReader(urlConnection.getInputStream(), "UTF-8");
                    readerBuffered = new BufferedReader(readerInputStream);

                    /* POTENTIAL FLAW: Read data from a web server with URLConnection */
                    /* This will be reading the first "line" of the response body,
                     * which could be very long if there are no newlines in the HTML */
                    data = readerBuffered.readLine();
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
                }
                finally
                {
                    /* clean up 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);
                    }
                }
            }

            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 execute(), which could result in SQL Injection */
                Boolean result = sqlStatement.execute("insert into users (status) values ('updated') where name='"+data+"'");

                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 Statement", 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();
    }

    /* goodG2B() - use goodsource and badsink */
    private void goodG2B() 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 execute(), which could result in SQL Injection */
                Boolean result = sqlStatement.execute("insert into users (status) values ('updated') where name='"+data+"'");

                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 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() throws Throwable
    {
        String dataCopy;
        {
            String data;

            data = ""; /* Initialize data */

            /* read input from URLConnection */
            {
                URLConnection urlConnection = (new URL("http://www.example.org/")).openConnection();
                BufferedReader readerBuffered = null;
                InputStreamReader readerInputStream = null;

                try
                {
                    readerInputStream = new InputStreamReader(urlConnection.getInputStream(), "UTF-8");
                    readerBuffered = new BufferedReader(readerInputStream);

                    /* POTENTIAL FLAW: Read data from a web server with URLConnection */
                    /* This will be reading the first "line" of the response body,
                     * which could be very long if there are no newlines in the HTML */
                    data = readerBuffered.readLine();
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
                }
                finally
                {
                    /* clean up 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);
                    }
                }
            }

            dataCopy = data;
        }
        {
            String data = dataCopy;

            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);
                }
            }

        }
    }

    /* 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);
    }
}
