/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE129_Improper_Validation_of_Array_Index__Property_array_size_08.java
Label Definition File: CWE129_Improper_Validation_of_Array_Index.label.xml
Template File: sources-sinks-08.tmpl.java
*/
/*
* @description
* CWE: 129 Improper Validation of Array Index
* BadSource: Property Read data from a system property
* GoodSource: A hardcoded non-zero, non-min, non-max, even number
* Sinks: array_size
*    GoodSink: data is used to set the size of the array and it must be greater than 0
*    BadSink : data is used to set the size of the array, but it could be set to 0
* Flow Variant: 08 Control flow: if(privateReturnsTrue()) and if(privateReturnsFalse())
*
* */






import java.util.logging.Level;

public class CWE129_Improper_Validation_of_Array_Index__Property_array_size_08 extends AbstractTestCase
{
    /* The methods below always return the same value, so a tool
     * should be able to figure out that every call to these
     * methods will return true or return false. */
    private boolean privateReturnsTrue()
    {
        return true;
    }

    private boolean privateReturnsFalse()
    {
        return false;
    }

    public void bad() throws Throwable
    {
        int data;
        if (privateReturnsTrue())
        {
            data = Integer.MIN_VALUE; /* Initialize data */
            /* get system property user.home */
            /* POTENTIAL FLAW: Read data from a system property */
            {
                String stringNumber = System.getProperty("user.home");
                try
                {
                    data = Integer.parseInt(stringNumber.trim());
                }
                catch(NumberFormatException exceptNumberFormat)
                {
                    IO.logger.log(Level.WARNING, "Number format exception parsing data from string", exceptNumberFormat);
                }
            }
        }
        else
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure data is inititialized before the Sink to avoid compiler errors */
            data = 0;
        }

        if (privateReturnsTrue())
        {
            int array[] = null;
            /* POTENTIAL FLAW: Verify that data is non-negative, but still allow it to be 0 */
            if (data >= 0)
            {
                array = new int[data];
            }
            else
            {
                IO.writeLine("Array size is negative");
            }
            /* do something with the array */
            array[0] = 5;
            IO.writeLine(array[0]);
        }
    }

    /* goodG2B1() - use goodsource and badsink by changing first privateReturnsTrue() to privateReturnsFalse() */
    private void goodG2B1() throws Throwable
    {
        int data;
        if (privateReturnsFalse())
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure data is inititialized before the Sink to avoid compiler errors */
            data = 0;
        }
        else
        {

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

        }

        if (privateReturnsTrue())
        {
            int array[] = null;
            /* POTENTIAL FLAW: Verify that data is non-negative, but still allow it to be 0 */
            if (data >= 0)
            {
                array = new int[data];
            }
            else
            {
                IO.writeLine("Array size is negative");
            }
            /* do something with the array */
            array[0] = 5;
            IO.writeLine(array[0]);
        }
    }

    /* goodG2B2() - use goodsource and badsink by reversing statements in first if */
    private void goodG2B2() throws Throwable
    {
        int data;
        if (privateReturnsTrue())
        {
            /* FIX: Use a hardcoded number that won't cause underflow, overflow, divide by zero, or loss-of-precision issues */
            data = 2;
        }
        else
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure data is inititialized before the Sink to avoid compiler errors */
            data = 0;
        }

        if (privateReturnsTrue())
        {
            int array[] = null;
            /* POTENTIAL FLAW: Verify that data is non-negative, but still allow it to be 0 */
            if (data >= 0)
            {
                array = new int[data];
            }
            else
            {
                IO.writeLine("Array size is negative");
            }
            /* do something with the array */
            array[0] = 5;
            IO.writeLine(array[0]);
        }
    }

    /* goodB2G1() - use badsource and goodsink by changing second privateReturnsTrue() to privateReturnsFalse() */
    private void goodB2G1() throws Throwable
    {
        int data;
        if (privateReturnsTrue())
        {
            data = Integer.MIN_VALUE; /* Initialize data */
            /* get system property user.home */
            /* POTENTIAL FLAW: Read data from a system property */
            {
                String stringNumber = System.getProperty("user.home");
                try
                {
                    data = Integer.parseInt(stringNumber.trim());
                }
                catch(NumberFormatException exceptNumberFormat)
                {
                    IO.logger.log(Level.WARNING, "Number format exception parsing data from string", exceptNumberFormat);
                }
            }
        }
        else
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure data is inititialized before the Sink to avoid compiler errors */
            data = 0;
        }

        if (privateReturnsFalse())
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
            IO.writeLine("Benign, fixed string");
        }
        else
        {

            /* Need to ensure that the array is of size > 3  and < 101 due to the GoodSource and the large_fixed BadSource */
            int array[] = null;

            /* FIX: Verify that data is non-negative AND greater than 0 */
            if (data > 0)
            {
                array = new int[data];
            }
            else
            {
                IO.writeLine("Array size is negative");
            }

            /* do something with the array */
            array[0] = 5;
            IO.writeLine(array[0]);

        }
    }

    /* goodB2G2() - use badsource and goodsink by reversing statements in second if  */
    private void goodB2G2() throws Throwable
    {
        int data;
        if (privateReturnsTrue())
        {
            data = Integer.MIN_VALUE; /* Initialize data */
            /* get system property user.home */
            /* POTENTIAL FLAW: Read data from a system property */
            {
                String stringNumber = System.getProperty("user.home");
                try
                {
                    data = Integer.parseInt(stringNumber.trim());
                }
                catch(NumberFormatException exceptNumberFormat)
                {
                    IO.logger.log(Level.WARNING, "Number format exception parsing data from string", exceptNumberFormat);
                }
            }
        }
        else
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure data is inititialized before the Sink to avoid compiler errors */
            data = 0;
        }

        if (privateReturnsTrue())
        {
            /* Need to ensure that the array is of size > 3  and < 101 due to the GoodSource and the large_fixed BadSource */
            int array[] = null;
            /* FIX: Verify that data is non-negative AND greater than 0 */
            if (data > 0)
            {
                array = new int[data];
            }
            else
            {
                IO.writeLine("Array size is negative");
            }
            /* do something with the array */
            array[0] = 5;
            IO.writeLine(array[0]);
        }
    }

    public void good() throws Throwable
    {
        goodG2B1();
        goodG2B2();
        goodB2G1();
        goodB2G2();
    }

    /* 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);
    }
}
