/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE78_OS_Command_Injection__console_readLine_05.java
Label Definition File: CWE78_OS_Command_Injection.label.xml
Template File: sources-sink-05.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: 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 CWE78_OS_Command_Injection__console_readLine_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;

    /* uses badsource and badsink */
    public void bad() throws Throwable
    {
        String data;
        if (privateTrue)
        {
            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 */
        }
        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 = null;
        }

        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();

    }

    /* goodG2B1() - use goodsource and badsink by changing privateTrue to privateFalse */
    private void goodG2B1() throws Throwable
    {
        String 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 = null;
        }
        else
        {

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

        }

        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();

    }

    /* goodG2B2() - use goodsource and badsink by reversing statements in if */
    private void goodG2B2() throws Throwable
    {
        String data;
        if (privateTrue)
        {
            /* FIX: Use a hardcoded string */
            data = "foo";
        }
        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 = null;
        }

        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 good() throws Throwable
    {
        goodG2B1();
        goodG2B2();
    }

    /* 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);
    }
}
