/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE36_Absolute_Path_Traversal__URLConnection_21.java
Label Definition File: CWE36_Absolute_Path_Traversal.label.xml
Template File: sources-sink-21.tmpl.java
*/
/*
 * @description
 * CWE: 36 Absolute Path Traversal
 * BadSource: URLConnection Read data from a web server with URLConnection
 * GoodSource: A hardcoded string
 * Sinks: readFile
 *    BadSink : read line from file from disk
 * Flow Variant: 21 Control flow: Flow controlled by value of a private variable. All functions contained in one file.
 *
 * */





import java.io.*;


import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;

import java.util.logging.Level;


public class CWE36_Absolute_Path_Traversal__URLConnection_21 extends AbstractTestCase
{
    /* The variable below is used to drive control flow in the source function */
    private boolean badPrivate = false;

    public void bad() throws Throwable
    {
        String data;

        badPrivate = true;
        data = bad_source();

        /* POTENTIAL FLAW: unvalidated or sandboxed value */
        if (data != null)
        {
            File file = new File(data);
            FileInputStream streamFileInputSink = null;
            InputStreamReader readerInputStreamSink = null;
            BufferedReader readerBufferdSink = null;
            if (file.exists() && file.isFile())
            {
                try
                {
                    streamFileInputSink = new FileInputStream(file);
                    readerInputStreamSink = new InputStreamReader(streamFileInputSink, "UTF-8");
                    readerBufferdSink = new BufferedReader(readerInputStreamSink);
                    IO.writeLine(readerBufferdSink.readLine());
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
                }
                finally
                {
                    /* Close stream reading objects */
                    try
                    {
                        if (readerBufferdSink != null)
                        {
                            readerBufferdSink.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO);
                    }

                    try
                    {
                        if (readerInputStreamSink != null)
                        {
                            readerInputStreamSink.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO);
                    }

                    try
                    {
                        if (streamFileInputSink != null)
                        {
                            streamFileInputSink.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing FileInputStream", exceptIO);
                    }
                }
            }
        }

    }

    private String bad_source() throws Throwable
    {
        String data;

        if (badPrivate)
        {
            data = ""; /* Initialize data */
            /* read input from URLConnection */
            {
                URLConnection urlConnection = (new URL("http://www.example.org/")).openConnection();
                BufferedReader readerBuffered = null;
                InputStreamReader readerInputStream = null;
                try
                {
                    readerInputStream = new InputStreamReader(urlConnection.getInputStream(), "UTF-8");
                    readerBuffered = new BufferedReader(readerInputStream);
                    /* POTENTIAL FLAW: Read data from a web server with URLConnection */
                    /* This will be reading the first "line" of the response body,
                     * which could be very long if there are no newlines in the HTML */
                    data = readerBuffered.readLine();
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
                }
                finally
                {
                    /* clean up stream reading objects */
                    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);
                    }
                }
            }
        }
        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;
        }

        return data;
    }

    /* The variables below are used to drive control flow in the source functions. */
    private boolean goodG2B1_private = false;
    private boolean goodG2B2_private = false;

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

    /* goodG2B1() - use goodsource and badsink by setting the variable to false instead of true */
    private void goodG2B1() throws Throwable
    {
        String data;

        goodG2B1_private = false;
        data = goodG2B1_source();

        /* POTENTIAL FLAW: unvalidated or sandboxed value */
        if (data != null)
        {
            File file = new File(data);
            FileInputStream streamFileInputSink = null;
            InputStreamReader readerInputStreamSink = null;
            BufferedReader readerBufferdSink = null;
            if (file.exists() && file.isFile())
            {
                try
                {
                    streamFileInputSink = new FileInputStream(file);
                    readerInputStreamSink = new InputStreamReader(streamFileInputSink, "UTF-8");
                    readerBufferdSink = new BufferedReader(readerInputStreamSink);
                    IO.writeLine(readerBufferdSink.readLine());
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
                }
                finally
                {
                    /* Close stream reading objects */
                    try
                    {
                        if (readerBufferdSink != null)
                        {
                            readerBufferdSink.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO);
                    }

                    try
                    {
                        if (readerInputStreamSink != null)
                        {
                            readerInputStreamSink.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO);
                    }

                    try
                    {
                        if (streamFileInputSink != null)
                        {
                            streamFileInputSink.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing FileInputStream", exceptIO);
                    }
                }
            }
        }

    }

    private String goodG2B1_source() throws Throwable
    {
        String data = null;

        if (goodG2B1_private)
        {
            /* 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";

        }

        return data;
    }

    /* goodG2B2() - use goodsource and badsink by reversing the blocks in the if in the sink function */
    private void goodG2B2() throws Throwable
    {
        String data;

        goodG2B2_private = true;
        data = goodG2B2_source();

        /* POTENTIAL FLAW: unvalidated or sandboxed value */
        if (data != null)
        {
            File file = new File(data);
            FileInputStream streamFileInputSink = null;
            InputStreamReader readerInputStreamSink = null;
            BufferedReader readerBufferdSink = null;
            if (file.exists() && file.isFile())
            {
                try
                {
                    streamFileInputSink = new FileInputStream(file);
                    readerInputStreamSink = new InputStreamReader(streamFileInputSink, "UTF-8");
                    readerBufferdSink = new BufferedReader(readerInputStreamSink);
                    IO.writeLine(readerBufferdSink.readLine());
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
                }
                finally
                {
                    /* Close stream reading objects */
                    try
                    {
                        if (readerBufferdSink != null)
                        {
                            readerBufferdSink.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO);
                    }

                    try
                    {
                        if (readerInputStreamSink != null)
                        {
                            readerInputStreamSink.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO);
                    }

                    try
                    {
                        if (streamFileInputSink != null)
                        {
                            streamFileInputSink.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing FileInputStream", exceptIO);
                    }
                }
            }
        }

    }

    private String goodG2B2_source() throws Throwable
    {
        String data = null;

        if (goodG2B2_private)
        {
            /* 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;
        }

        return 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);
    }

}
