/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE789_Uncontrolled_Mem_Alloc__URLConnection_HashSet_42.java
Label Definition File: CWE789_Uncontrolled_Mem_Alloc.int.label.xml
Template File: sources-sink-42.tmpl.java
*/
/*
 * @description
 * CWE: 789 Uncontrolled Memory Allocation
 * BadSource: URLConnection Read data from a web server with URLConnection
 * GoodSource: A hardcoded non-zero, non-min, non-max, even number
 * BadSink: HashSet Create a HashSet using data as the initial size
 * Flow Variant: 42 Data flow: data returned from one method to another in the same class
 *
 * */






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.util.HashSet;

public class CWE789_Uncontrolled_Mem_Alloc__URLConnection_HashSet_42 extends AbstractTestCase
{
    private int badSource() throws Throwable
    {
        int data;

        data = Integer.MIN_VALUE; /* 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 */
                String stringNumber = readerBuffered.readLine();

                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 (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);
                }
            }
        }

        return data;
    }

    /* use badsource and badsink */
    public void bad() throws Throwable
    {
        int data = badSource();

        /* POTENTIAL FLAW: Create a HashSet using data as the initial size.  data may be very large, creating memory issues */
        HashSet intHashSet = new HashSet(data);

    }

    private int goodG2BSource() throws Throwable
    {
        int data;

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

        return data;
    }

    /* goodG2B() - use goodsource and badsink */
    private void goodG2B() throws Throwable
    {
        int data = goodG2BSource();

        /* POTENTIAL FLAW: Create a HashSet using data as the initial size.  data may be very large, creating memory issues */
        HashSet intHashSet = new HashSet(data);

    }

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

    /* 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);
    }

}
