/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE789_Uncontrolled_Mem_Alloc__Environment_HashMap_16.java
Label Definition File: CWE789_Uncontrolled_Mem_Alloc.int.label.xml
Template File: sources-sink-16.tmpl.java
*/
/*
* @description
* CWE: 789 Uncontrolled Memory Allocation
* BadSource: Environment Read data from an environment variable
* GoodSource: A hardcoded non-zero, non-min, non-max, even number
* BadSink: HashMap Create a HashMap using data as the initial size
* Flow Variant: 16 Control flow: while(true)
*
* */






import java.util.logging.Level;

import java.util.HashMap;

public class CWE789_Uncontrolled_Mem_Alloc__Environment_HashMap_16 extends AbstractTestCase
{
    /* uses badsource and badsink */
    public void bad() throws Throwable
    {
        int data;

        while (true)
        {
            data = Integer.MIN_VALUE; /* Initialize data */
            /* get environment variable ADD */
            /* POTENTIAL FLAW: Read data from an environment variable */
            {
                String stringNumber = System.getenv("ADD");
                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);
                    }
                }
            }
            break;
        }

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

    }

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

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

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