/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE190_Integer_Overflow__short_console_readLine_multiply_05.java
Label Definition File: CWE190_Integer_Overflow.label.xml
Template File: sources-sinks-05.tmpl.java
*/
/*
* @description
* CWE: 190 Integer Overflow
* BadSource: console_readLine Read data from the console using readLine
* 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: 05 Control flow: if(privateTrue) and if(privateFalse)
*
* */






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

import java.util.logging.Level;

public class CWE190_Integer_Overflow__short_console_readLine_multiply_05 extends AbstractTestCase
{
    /* The two variables below are not defined as "final", but are never
     * assigned any other value, so a tool should be able to identify that
     * reads of these will always return their initialized values.
     */
    private boolean privateTrue = true;
    private boolean privateFalse = false;

    public void bad() throws Throwable
    {
        short data;
        if (privateTrue)
        {
            /* init data */
            data = -1;
            /* POTENTIAL FLAW: Read data from console with readLine*/
            BufferedReader readerBuffered = null;
            InputStreamReader readerInputStream = null;
            try
            {
                readerInputStream = new InputStreamReader(System.in, "UTF-8");
                readerBuffered = new BufferedReader(readerInputStream);
                String stringNumber = readerBuffered.readLine();
                if (stringNumber != null)
                {
                    data = Short.parseShort(stringNumber.trim());
                }
            }
            catch (IOException exceptIO)
            {
                IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
            }
            catch (NumberFormatException exceptNumberFormat)
            {
                IO.logger.log(Level.WARNING, "Error with number parsing", exceptNumberFormat);
            }
            finally
            {
                /* clean up stream reading objects */
                try
                {
                    if (readerBuffered != null)
                    {
                        readerBuffered.close();
                    }
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO);
                }
                finally
                {
                    try
                    {
                        if (readerInputStream != null)
                        {
                            readerInputStream.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO);
                    }
                }
            }
        }
        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 (privateTrue)
        {
            if(data > 0) /* ensure we won't have an underflow */
            {
                /* POTENTIAL FLAW: if (data*2) > Short.MAX_VALUE, this will overflow */
                short result = (short)(data * 2);
                IO.writeLine("result: " + result);
            }
        }
    }

    /* goodG2B1() - use goodsource and badsink by changing first privateTrue to privateFalse */
    private void goodG2B1() throws Throwable
    {
        short data;
        if (privateFalse)
        {
            /* 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 (privateTrue)
        {
            if(data > 0) /* ensure we won't have an underflow */
            {
                /* POTENTIAL FLAW: if (data*2) > Short.MAX_VALUE, this will overflow */
                short result = (short)(data * 2);
                IO.writeLine("result: " + result);
            }
        }
    }

    /* goodG2B2() - use goodsource and badsink by reversing statements in first if */
    private void goodG2B2() throws Throwable
    {
        short data;
        if (privateTrue)
        {
            /* 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 (privateTrue)
        {
            if(data > 0) /* ensure we won't have an underflow */
            {
                /* POTENTIAL FLAW: if (data*2) > Short.MAX_VALUE, this will overflow */
                short result = (short)(data * 2);
                IO.writeLine("result: " + result);
            }
        }
    }

    /* goodB2G1() - use badsource and goodsink by changing second privateTrue to privateFalse */
    private void goodB2G1() throws Throwable
    {
        short data;

        if (privateTrue)
        {
            /* init data */
            data = -1;
            /* POTENTIAL FLAW: Read data from console with readLine*/
            BufferedReader readerBuffered = null;
            InputStreamReader readerInputStream = null;
            try
            {
                readerInputStream = new InputStreamReader(System.in, "UTF-8");
                readerBuffered = new BufferedReader(readerInputStream);
                String stringNumber = readerBuffered.readLine();
                if (stringNumber != null)
                {
                    data = Short.parseShort(stringNumber.trim());
                }
            }
            catch (IOException exceptIO)
            {
                IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
            }
            catch (NumberFormatException exceptNumberFormat)
            {
                IO.logger.log(Level.WARNING, "Error with number parsing", exceptNumberFormat);
            }
            finally
            {
                /* clean up stream reading objects */
                try
                {
                    if (readerBuffered != null)
                    {
                        readerBuffered.close();
                    }
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO);
                }
                finally
                {
                    try
                    {
                        if (readerInputStream != null)
                        {
                            readerInputStream.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO);
                    }
                }
            }
        }
        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 (privateFalse)
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
            IO.writeLine("Benign, fixed string");
        }
        else
        {

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

        }
    }

    /* goodB2G2() - use badsource and goodsink by reversing statements in second if  */
    private void goodB2G2() throws Throwable
    {
        short data;
        if (privateTrue)
        {
            /* init data */
            data = -1;
            /* POTENTIAL FLAW: Read data from console with readLine*/
            BufferedReader readerBuffered = null;
            InputStreamReader readerInputStream = null;
            try
            {
                readerInputStream = new InputStreamReader(System.in, "UTF-8");
                readerBuffered = new BufferedReader(readerInputStream);
                String stringNumber = readerBuffered.readLine();
                if (stringNumber != null)
                {
                    data = Short.parseShort(stringNumber.trim());
                }
            }
            catch (IOException exceptIO)
            {
                IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
            }
            catch (NumberFormatException exceptNumberFormat)
            {
                IO.logger.log(Level.WARNING, "Error with number parsing", exceptNumberFormat);
            }
            finally
            {
                /* clean up stream reading objects */
                try
                {
                    if (readerBuffered != null)
                    {
                        readerBuffered.close();
                    }
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO);
                }
                finally
                {
                    try
                    {
                        if (readerInputStream != null)
                        {
                            readerInputStream.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO);
                    }
                }
            }
        }
        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 (privateTrue)
        {
            if(data > 0) /* ensure we won't have an underflow */
            {
                /* FIX: Add a check to prevent an overflow from occurring */
                if (data < (Short.MAX_VALUE/2))
                {
                    short result = (short)(data * 2);
                    IO.writeLine("result: " + result);
                }
                else
                {
                    IO.writeLine("data value is too large to perform multiplication.");
                }
            }
        }
    }

    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);
    }
}
