/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE369_Divide_by_Zero__float_connect_tcp_divide_61b.java
Label Definition File: CWE369_Divide_by_Zero__float.label.xml
Template File: sources-sinks-61b.tmpl.java
*/
/*
 * @description
 * CWE: 369 Divide by zero
 * BadSource: connect_tcp Read data using an outbound tcp connection
 * GoodSource: A hardcoded non-zero number (two)
 * Sinks: divide
 *    GoodSink: Check for zero before dividing
 *    BadSink : Dividing by a value that may be zero
 * Flow Variant: 61 Data flow: data returned from one method to another in different classes in the same package
 *
 * */




import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.net.Socket;

import java.util.logging.Level;

public class CWE369_Divide_by_Zero__float_connect_tcp_divide_61b
{
    public float badSource() throws Throwable
    {
        float data;

        data = -1.0f; /* Initialize data */

        /* Read data using an outbound tcp connection */
        {
            Socket socket = null;
            BufferedReader readerBuffered = null;
            InputStreamReader readerInputStream = null;

            try
            {
                /* Read data using an outbound tcp connection */
                socket = new Socket("host.example.org", 39544);

                /* read input from socket */

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

                /* POTENTIAL FLAW: Read data using an outbound tcp connection */
                String stringNumber = readerBuffered.readLine();
                if (stringNumber != null) // avoid NPD incidental warnings
                {
                    try
                    {
                        data = Float.parseFloat(stringNumber.trim());
                    }
                    catch(NumberFormatException exceptNumberFormat)
                    {
                        IO.logger.log(Level.WARNING, "Number format exception parsing data from string", exceptNumberFormat);
                    }
                }
            }
            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);
                }

                /* clean up socket objects */
                try
                {
                    if (socket != null)
                    {
                        socket.close();
                    }
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO);
                }
            }
        }

        return data;
    }

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

        /* FIX: Use a hardcoded number that won't a divide by zero */
        data = 2.0f;

        return data;
    }

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

        data = -1.0f; /* Initialize data */

        /* Read data using an outbound tcp connection */
        {
            Socket socket = null;
            BufferedReader readerBuffered = null;
            InputStreamReader readerInputStream = null;

            try
            {
                /* Read data using an outbound tcp connection */
                socket = new Socket("host.example.org", 39544);

                /* read input from socket */

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

                /* POTENTIAL FLAW: Read data using an outbound tcp connection */
                String stringNumber = readerBuffered.readLine();
                if (stringNumber != null) // avoid NPD incidental warnings
                {
                    try
                    {
                        data = Float.parseFloat(stringNumber.trim());
                    }
                    catch(NumberFormatException exceptNumberFormat)
                    {
                        IO.logger.log(Level.WARNING, "Number format exception parsing data from string", exceptNumberFormat);
                    }
                }
            }
            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);
                }

                /* clean up socket objects */
                try
                {
                    if (socket != null)
                    {
                        socket.close();
                    }
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO);
                }
            }
        }

        return data;
    }
}
