/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE78_OS_Command_Injection__console_readLine_41.java
Label Definition File: CWE78_OS_Command_Injection.label.xml
Template File: sources-sink-41.tmpl.java
*/
/*
 * @description
 * CWE: 78 OS Command Injection
 * BadSource: console_readLine Read data from the console using readLine()
 * GoodSource: A hardcoded string
 * BadSink: exec dynamic command execution with Runtime.getRuntime().exec()
 * Flow Variant: 41 Data flow: data passed as an argument from one method to another in the same class
 *
 * */







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

import java.util.logging.Level;

public class CWE78_OS_Command_Injection__console_readLine_41 extends AbstractTestCase
{
    private void badSink(String data ) throws Throwable
    {

        String osCommand;
        if(System.getProperty("os.name").toLowerCase().indexOf("win") >= 0)
        {
            /* running on Windows */
            osCommand = "c:\\WINDOWS\\SYSTEM32\\cmd.exe /c dir ";
        }
        else
        {
            /* running on non-Windows */
            osCommand = "/bin/ls ";
        }

        /* POTENTIAL FLAW: command injection */
        Process process = Runtime.getRuntime().exec(osCommand + data);
        process.waitFor();

    }

    public void bad() throws Throwable
    {
        String data;

        data = ""; /* 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 */
                data = readerBuffered.readLine();
            }
            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 buffread and isr 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 */

        badSink(data  );
    }

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

    private void goodG2BSink(String data ) throws Throwable
    {

        String osCommand;
        if(System.getProperty("os.name").toLowerCase().indexOf("win") >= 0)
        {
            /* running on Windows */
            osCommand = "c:\\WINDOWS\\SYSTEM32\\cmd.exe /c dir ";
        }
        else
        {
            /* running on non-Windows */
            osCommand = "/bin/ls ";
        }

        /* POTENTIAL FLAW: command injection */
        Process process = Runtime.getRuntime().exec(osCommand + data);
        process.waitFor();

    }

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

        /* FIX: Use a hardcoded string */
        data = "foo";

        goodG2BSink(data  );
    }

    /* 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);
    }
}
