/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE83_XSS_Attribute__Servlet_File_22b.java
Label Definition File: CWE83_XSS_Attribute__Servlet.label.xml
Template File: sources-sink-22b.tmpl.java
*/
/*
 * @description
 * CWE: 83 Cross Site Scripting (XSS) in attributes; Examples(replace QUOTE with an actual double quote): ?img_loc=http://www.google.comQUOTE%20onerror=QUOTEalert(1) and ?img_loc=http://www.google.comQUOTE%20onerror=QUOTEjavascript:alert(1)
 * BadSource: File Read data from file (named c:\data.txt)
 * GoodSource: A hardcoded string
 * Sinks: printlnServlet
 *    BadSink : XSS in img src attribute
 * Flow Variant: 22 Control flow: Flow controlled by value of a public static variable. Sink functions are in a separate file from sources.
 *
 * */





import javax.servlet.http.*;

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

import java.util.logging.Level;

public class CWE83_XSS_Attribute__Servlet_File_22b
{
    public String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;

        if (CWE83_XSS_Attribute__Servlet_File_22a.badPublicStatic)
        {
            data = ""; /* Initialize data */
            {
                File file = new File("C:\\data.txt");
                FileInputStream streamFileInput = null;
                InputStreamReader readerInputStream = null;
                BufferedReader readerBuffered = null;
                try
                {
                    /* read string from file into data */
                    streamFileInput = new FileInputStream(file);
                    readerInputStream = new InputStreamReader(streamFileInput, "UTF-8");
                    readerBuffered = new BufferedReader(readerInputStream);
                    /* POTENTIAL FLAW: Read data from a file */
                    /* This will be reading the first "line" of the file, which
                     * could be very long if there are little or no newlines in the file */
                    data = readerBuffered.readLine();
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
                }
                finally
                {
                    /* Close 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);
                    }

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

    /* goodG2B1() - use goodsource and badsink by setting the static variable to false instead of true */
    public String goodG2B1Source(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;

        if (CWE83_XSS_Attribute__Servlet_File_22a.goodG2B1PublicStatic)
        {
            /* 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 */
    public String goodG2B2Source(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;

        if (CWE83_XSS_Attribute__Servlet_File_22a.goodG2B2PublicStatic)
        {
            /* 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;
    }
}
