/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE190_Integer_Overflow__int_Property_multiply_17.java
Label Definition File: CWE190_Integer_Overflow__int.label.xml
Template File: sources-sinks-17.tmpl.java
*/
/*
* @description
* CWE: 190 Integer Overflow
* BadSource: Property Read data from a system property
* GoodSource: A hardcoded non-zero, non-min, non-max, even number
* Sinks: multiply
*    GoodSink: Ensure there will not be an overflow before multiplying data by 2
*    BadSink : If data is positive, multiply by 2, which can cause an overflow
* Flow Variant: 17 Control flow: for loops
*
* */






import java.util.logging.Level;

public class CWE190_Integer_Overflow__int_Property_multiply_17 extends AbstractTestCase
{
    public void bad() throws Throwable
    {
        int data;

        /* We need to have one source outside of a for loop in order
         * to prevent the Java compiler from generating an error because
         * data is uninitialized
         */

        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);
            }
        }

        for (int j = 0; j < 1; j++)
        {
            if(data > 0) /* ensure we won't have an underflow */
            {
                /* POTENTIAL FLAW: if (data*2) > Integer.MAX_VALUE, this will overflow */
                int result = (int)(data * 2);
                IO.writeLine("result: " + result);
            }
        }
    }

    /* 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;

        for (int j = 0; j < 1; j++)
        {
            if(data > 0) /* ensure we won't have an underflow */
            {
                /* POTENTIAL FLAW: if (data*2) > Integer.MAX_VALUE, this will overflow */
                int result = (int)(data * 2);
                IO.writeLine("result: " + result);
            }
        }
    }

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

        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);
            }
        }

        for (int k = 0; k < 1; k++)
        {
            if(data > 0) /* ensure we won't have an underflow */
            {
                /* FIX: Add a check to prevent an overflow from occurring */
                if (data < (Integer.MAX_VALUE/2))
                {
                    int result = (int)(data * 2);
                    IO.writeLine("result: " + result);
                }
                else
                {
                    IO.writeLine("data value is too large to perform multiplication.");
                }
            }
        }
    }

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

    /* 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);
    }
}
