/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE606_Unchecked_Loop_Condition__connect_tcp_45.java
Label Definition File: CWE606_Unchecked_Loop_Condition.label.xml
Template File: sources-sinks-45.tmpl.java
*/
/*
 * @description
 * CWE: 606 Unchecked Input for Loop Condition
 * BadSource: connect_tcp Read data using an outbound tcp connection
 * GoodSource: hardcoded int in string form
 * Sinks:
 *    GoodSink: validate loop variable
 *    BadSink : loop variable not validated
 * Flow Variant: 45 Data flow: data passed as a private class member variable from one function to another in the same class
 *
 * */







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

import java.util.logging.Level;

public class CWE606_Unchecked_Loop_Condition__connect_tcp_45 extends AbstractTestCase
{
    private String dataBad;
    private String dataGoodG2B;
    private String dataGoodB2G;

    private void badSink() throws Throwable
    {
        String data = dataBad;

        int numberOfLoops;
        try
        {
            numberOfLoops = Integer.parseInt(data);
        }
        catch (NumberFormatException exceptNumberFormat)
        {
            IO.writeLine("Invalid response. Numeric input expected. Assuming 1.");
            numberOfLoops = 1;
        }

        for (int i=0; i < numberOfLoops; i++)
        {
            /* POTENTIAL FLAW: user supplied input used for loop counter test */
            IO.writeLine("hello world");
        }

    }

    public void bad() throws Throwable
    {
        String data;

        data = ""; /* 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 */
                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);
                }

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

        dataBad = data;
        badSink();
    }

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

    private void goodG2BSink() throws Throwable
    {
        String data = dataGoodG2B;

        int numberOfLoops;
        try
        {
            numberOfLoops = Integer.parseInt(data);
        }
        catch (NumberFormatException exceptNumberFormat)
        {
            IO.writeLine("Invalid response. Numeric input expected. Assuming 1.");
            numberOfLoops = 1;
        }

        for (int i=0; i < numberOfLoops; i++)
        {
            /* POTENTIAL FLAW: user supplied input used for loop counter test */
            IO.writeLine("hello world");
        }

    }

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

        /* FIX: Use a hardcoded int as a string */
        data = "5";

        dataGoodG2B = data;
        goodG2BSink();
    }

    private void goodB2GSink() throws Throwable
    {
        String data = dataGoodB2G;

        int numberOfLoops;
        try
        {
            numberOfLoops = Integer.parseInt(data);
        }
        catch (NumberFormatException exceptNumberFormat)
        {
            IO.writeLine("Invalid response. Numeric input expected. Assuming 1.");
            numberOfLoops = 1;
        }

        /* FIX: loop number thresholds validated */
        if (numberOfLoops >= 0 && numberOfLoops <= 5)
        {
            for (int i=0; i < numberOfLoops; i++)
            {
                IO.writeLine("hello world");
            }
        }

    }

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

        data = ""; /* 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 */
                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);
                }

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

        dataGoodB2G = data;
        goodB2GSink();
    }

    /* 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);
    }
}
