/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE190_Integer_Overflow__int_database_add_31.java
Label Definition File: CWE190_Integer_Overflow__int.label.xml
Template File: sources-sinks-31.tmpl.java
*/
/*
 * @description
 * CWE: 190 Integer Overflow
 * BadSource: database Read data from a database
 * GoodSource: A hardcoded non-zero, non-min, non-max, even number
 * Sinks: add
 *    GoodSink: Ensure there will not be an overflow before adding 1 to data
 *    BadSink : Add 1 to data, which can cause an overflow
 * Flow Variant: 31 Data flow: make a copy of data within the same method
 *
 * */






import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import java.util.logging.Level;

public class CWE190_Integer_Overflow__int_database_add_31 extends AbstractTestCase
{
    public void bad() throws Throwable
    {
        int dataCopy;
        {
            int data;

            data = Integer.MIN_VALUE; /* Initialize data */

            /* Read data from a database */
            {
                Connection connection = null;
                PreparedStatement preparedStatement = null;
                ResultSet resultSet = null;

                try
                {
                    /* setup the connection */
                    connection = IO.getDBConnection();

                    /* prepare and execute a (hardcoded) query */
                    preparedStatement = connection.prepareStatement("select name from users where id=0");
                    resultSet = preparedStatement.executeQuery();

                    /* POTENTIAL FLAW: Read data from a database query resultset */
                    String stringNumber = resultSet.getString(1);
                    if (stringNumber != null) /* avoid NPD incidental warnings */
                    {
                        try
                        {
                            data = Integer.parseInt(stringNumber.trim());
                        }
                        catch (NumberFormatException exceptNumberFormat)
                        {
                            IO.logger.log(Level.WARNING, "Number format exception parsing data from string", exceptNumberFormat);
                        }
                    }
                }
                catch (SQLException exceptSql)
                {
                    IO.logger.log(Level.WARNING, "Error with SQL statement", exceptSql);
                }
                finally
                {
                    /* Close database objects */
                    try
                    {
                        if (resultSet != null)
                        {
                            resultSet.close();
                        }
                    }
                    catch (SQLException exceptSql)
                    {
                        IO.logger.log(Level.WARNING, "Error closing ResultSet", exceptSql);
                    }

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

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

            dataCopy = data;
        }
        {
            int data = dataCopy;

            /* POTENTIAL FLAW: if data == Integer.MAX_VALUE, this will overflow */
            int result = (int)(data + 1);

            IO.writeLine("result: " + result);

        }
    }

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

    /* goodG2B() - use goodsource and badsink */
    private void goodG2B() throws Throwable
    {
        int dataCopy;
        {
            int data;

            /* FIX: Use a hardcoded number that won't cause underflow, overflow, divide by zero, or loss-of-precision issues */
            data = 2;

            dataCopy = data;
        }
        {
            int data = dataCopy;

            /* POTENTIAL FLAW: if data == Integer.MAX_VALUE, this will overflow */
            int result = (int)(data + 1);

            IO.writeLine("result: " + result);

        }
    }

    /* goodB2G() - use badsource and goodsink */
    private void goodB2G() throws Throwable
    {
        int dataCopy;
        {
            int data;

            data = Integer.MIN_VALUE; /* Initialize data */

            /* Read data from a database */
            {
                Connection connection = null;
                PreparedStatement preparedStatement = null;
                ResultSet resultSet = null;

                try
                {
                    /* setup the connection */
                    connection = IO.getDBConnection();

                    /* prepare and execute a (hardcoded) query */
                    preparedStatement = connection.prepareStatement("select name from users where id=0");
                    resultSet = preparedStatement.executeQuery();

                    /* POTENTIAL FLAW: Read data from a database query resultset */
                    String stringNumber = resultSet.getString(1);
                    if (stringNumber != null) /* avoid NPD incidental warnings */
                    {
                        try
                        {
                            data = Integer.parseInt(stringNumber.trim());
                        }
                        catch (NumberFormatException exceptNumberFormat)
                        {
                            IO.logger.log(Level.WARNING, "Number format exception parsing data from string", exceptNumberFormat);
                        }
                    }
                }
                catch (SQLException exceptSql)
                {
                    IO.logger.log(Level.WARNING, "Error with SQL statement", exceptSql);
                }
                finally
                {
                    /* Close database objects */
                    try
                    {
                        if (resultSet != null)
                        {
                            resultSet.close();
                        }
                    }
                    catch (SQLException exceptSql)
                    {
                        IO.logger.log(Level.WARNING, "Error closing ResultSet", exceptSql);
                    }

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

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

            dataCopy = data;
        }
        {
            int data = dataCopy;

            /* FIX: Add a check to prevent an overflow from occurring */
            if (data < Integer.MAX_VALUE)
            {
                int result = (int)(data + 1);
                IO.writeLine("result: " + result);
            }
            else
            {
                IO.writeLine("data value is too large to perform addition.");
            }

        }
    }

    /* 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);
    }
}
