/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE606_Unchecked_Loop_Condition__getQueryString_Servlet_75b.java
Label Definition File: CWE606_Unchecked_Loop_Condition.label.xml
Template File: sources-sinks-75b.tmpl.java
*/
/*
 * @description
 * CWE: 606 Unchecked Input for Loop Condition
 * BadSource: getQueryString_Servlet Parse id param out of the URL query string (without using getParameter())
 * GoodSource: hardcoded int in string form
 * Sinks:
 *    GoodSink: validate loop variable
 *    BadSink : loop variable not validated
 * Flow Variant: 75 Data flow: data passed in a serialized object from one method to another in different source files in the same package
 *
 * */




import java.io.ByteArrayInputStream;
import java.io.ObjectInputStream;
import java.io.IOException;
import java.util.logging.Level;

import javax.servlet.http.*;

public class CWE606_Unchecked_Loop_Condition__getQueryString_Servlet_75b
{
    public void badSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        /* unserialize data */
        ByteArrayInputStream streamByteArrayInput = null;
        ObjectInputStream streamObjectInput = null;

        try
        {
            streamByteArrayInput = new ByteArrayInputStream(dataSerialized);
            streamObjectInput = new ObjectInputStream(streamByteArrayInput);
            String data = (String)streamObjectInput.readObject();

            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");
            }

        }
        catch (IOException exceptIO)
        {
            IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO);
        }
        catch (ClassNotFoundException exceptClassNotFound)
        {
            IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound);
        }
        finally
        {
            /* clean up stream reading objects */
            try
            {
                if (streamObjectInput != null)
                {
                    streamObjectInput.close();
                }
            }
            catch (IOException exceptIO)
            {
                IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO);
            }

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

    /* goodG2B() - use GoodSource and BadSink */
    public void goodG2BSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        /* unserialize data */
        ByteArrayInputStream streamByteArrayInput = null;
        ObjectInputStream streamObjectInput = null;

        try {
            streamByteArrayInput = new ByteArrayInputStream(dataSerialized);
            streamObjectInput = new ObjectInputStream(streamByteArrayInput);
            String data = (String)streamObjectInput.readObject();

            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");
            }

        }
        catch (IOException exceptIO)
        {
            IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO);
        }
        catch (ClassNotFoundException exceptClassNotFound)
        {
            IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound);
        }
        finally
        {
            /* clean up stream reading objects */
            try
            {
                if (streamObjectInput != null)
                {
                    streamObjectInput.close();
                }
            }
            catch (IOException exceptIO)
            {
                IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO);
            }

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

    /* goodB2G() - use BadSource and GoodSink */
    public void goodB2GSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        /* unserialize data */
        ByteArrayInputStream streamByteArrayInput = null;
        ObjectInputStream streamObjectInput = null;

        try
        {
            streamByteArrayInput = new ByteArrayInputStream(dataSerialized);
            streamObjectInput = new ObjectInputStream(streamByteArrayInput);
            String data = (String)streamObjectInput.readObject();

            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");
                }
            }

        }
        catch (IOException exceptIO)
        {
            IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO);
        }
        catch (ClassNotFoundException exceptClassNotFound)
        {
            IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound);
        }
        finally
        {
            /* clean up stream reading objects */
            try
            {
                if (streamObjectInput != null)
                {
                    streamObjectInput.close();
                }
            }
            catch (IOException exceptIO)
            {
                IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO);
            }

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