/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE23_Relative_Path_Traversal__connect_tcp_17.java
Label Definition File: CWE23_Relative_Path_Traversal.label.xml
Template File: sources-sink-17.tmpl.java
*/
/*
* @description
* CWE: 23 Relative Path Traversal
* BadSource: connect_tcp Read data using an outbound tcp connection
* GoodSource: A hardcoded string
* BadSink: readFile no validation
* Flow Variant: 17 Control flow: for loops
*
* */





import java.io.*;


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

import java.util.logging.Level;


public class CWE23_Relative_Path_Traversal__connect_tcp_17 extends AbstractTestCase
{
    /* uses badsource and badsink */
    public void bad() throws Throwable
    {
        String data;

        data = ""; /* Initialize data */

        /* Read data using an outbound tcp connection */
        {
            Socket socket = null;
            BufferedReader readerBuffered = null;
            InputStreamReader readerInputStream = null;

            try
            {
                /* Read data using an outbound tcp connection */
                socket = new Socket("host.example.org", 39544);

                /* read input from socket */

                readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8");
                readerBuffered = new BufferedReader(readerInputStream);

                /* POTENTIAL FLAW: Read data using an outbound tcp connection */
                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);
                }

                /* clean up socket objects */
                try
                {
                    if (socket != null)
                    {
                        socket.close();
                    }
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO);
                }
            }
        }

        for (int i = 0; i < 1; i++)
        {
            String root;
            if(System.getProperty("os.name").toLowerCase().indexOf("win") >= 0)
            {
                /* running on Windows */
                root = "C:\\uploads\\";
            }
            else
            {
                /* running on non-Windows */
                root = "/home/user/uploads/";
            }
            if (data != null)
            {
                /* POTENTIAL FLAW: no validation of concatenated value */
                File file = new File(root + 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);
                        }
                    }
                }
            }
        }
    }

    /* goodG2B() - use goodsource and badsink by reversing the block outside the
     * for statement with the one in the for statement */
    private void goodG2B() throws Throwable
    {
        String data;

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

        for (int i = 0; i < 1; i++)
        {
            String root;
            if(System.getProperty("os.name").toLowerCase().indexOf("win") >= 0)
            {
                /* running on Windows */
                root = "C:\\uploads\\";
            }
            else
            {
                /* running on non-Windows */
                root = "/home/user/uploads/";
            }
            if (data != null)
            {
                /* POTENTIAL FLAW: no validation of concatenated value */
                File file = new File(root + 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);
                        }
                    }
                }
            }
        }
    }

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

    /* 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);
    }
}
