/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE129_Improper_Validation_of_Array_Index__console_readLine_array_write_no_check_01.java
Label Definition File: CWE129_Improper_Validation_of_Array_Index.label.xml
Template File: sources-sinks-01.tmpl.java
*/
/*
* @description
* CWE: 129 Improper Validation of Array Index
* BadSource: console_readLine Read data from the console using readLine
* GoodSource: A hardcoded non-zero, non-min, non-max, even number
* Sinks: array_write_no_check
*    GoodSink: Write to array after verifying index
*    BadSink : Write to array without any verification of index
* Flow Variant: 01 Baseline
*
* */






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

import java.util.logging.Level;

public class CWE129_Improper_Validation_of_Array_Index__console_readLine_array_write_no_check_01 extends AbstractTestCase
{
    public void bad() throws Throwable
    {
        int data;

        data = Integer.MIN_VALUE; /* Initialize data */

        {
            InputStreamReader readerInputStream = null;
            BufferedReader readerBuffered = null;

            /* read user input from console with readLine */
            try
            {
                readerInputStream = new InputStreamReader(System.in, "UTF-8");
                readerBuffered = new BufferedReader(readerInputStream);

                /* POTENTIAL FLAW: Read data from the console using readLine */
                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
            {
                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);
                }
            }
        }
        /* NOTE: Tools may report a flaw here because readerBuffered and readerInputStream are not closed.  Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception */

        /* Need to ensure that the array is of size > 3  and < 101 due to the GoodSource and the large_fixed BadSource */
        int array[] = { 0, 1, 2, 3, 4 };

        /* POTENTIAL FLAW: Attempt to write to array at location data, which may be outside the array bounds */
        array[data] = 42;

        /* Skip reading back data from array since that may be another out of bounds operation */

    }

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

    /* goodG2B() - use goodsource and badsink */
    private void goodG2B() 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;

        /* Need to ensure that the array is of size > 3  and < 101 due to the GoodSource and the large_fixed BadSource */
        int array[] = { 0, 1, 2, 3, 4 };

        /* POTENTIAL FLAW: Attempt to write to array at location data, which may be outside the array bounds */
        array[data] = 42;

        /* Skip reading back data from array since that may be another out of bounds operation */

    }

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

        data = Integer.MIN_VALUE; /* Initialize data */

        {
            InputStreamReader readerInputStream = null;
            BufferedReader readerBuffered = null;

            /* read user input from console with readLine */
            try
            {
                readerInputStream = new InputStreamReader(System.in, "UTF-8");
                readerBuffered = new BufferedReader(readerInputStream);

                /* POTENTIAL FLAW: Read data from the console using readLine */
                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
            {
                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);
                }
            }
        }
        /* NOTE: Tools may report a flaw here because readerBuffered and readerInputStream are not closed.  Unfortunately, closing those will close System.in, which will cause any future attempts to read from the console to fail and throw an exception */

        /* Need to ensure that the array is of size > 3  and < 101 due to the GoodSource and the large_fixed BadSource */
        int array[] = { 0, 1, 2, 3, 4 };

        /* FIX: Verify index before writing to array at location data */
        if (data >= 0 && data < array.length)
        {
            array[data] = 42;
        }
        else
        {
            IO.writeLine("Array index out of bounds");
        }

    }

    /* 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);
    }
}

