/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE690_NULL_Deref_From_Return__Properties_getProperty_equals_16.java
Label Definition File: CWE690_NULL_Deref_From_Return.label.xml
Template File: sources-sinks-16.tmpl.java
*/
/*
* @description
* CWE: 690 Unchecked return value is null, leading to a null pointer dereference.
* BadSource: Properties_getProperty Set data to return of Properties.getProperty
* GoodSource: Set data to fixed, non-null String
* Sinks: equals
*    GoodSink: Call equals() on string literal (that is not null)
*    BadSink : Call equals() on possibly null object
* Flow Variant: 16 Control flow: while(true)
*
* */







import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;

import java.util.logging.Level;

public class CWE690_NULL_Deref_From_Return__Properties_getProperty_equals_16 extends AbstractTestCase
{
    public void bad() throws Throwable
    {
        String data;

        while (true)
        {
            FileInputStream streamFileInput = null;
            String propertiesFileName = "./CWE690_NULL_Deref_From_Return__Helper.properties";
            try
            {
                streamFileInput = new FileInputStream(propertiesFileName);
                Properties properties = new Properties();
                properties.load(streamFileInput);
                /* POTENTIAL FLAW: data may be set to null */
                data = properties.getProperty("CWE690");
            }
            catch (IOException exceptIO)
            {
                IO.writeLine("Could not open properties file: " + propertiesFileName);
                data = ""; /* ensure that data is initialized */
            }
            finally
            {
                try
                {
                    if (streamFileInput != null)
                    {
                        streamFileInput.close();
                    }
                }
                catch (IOException e)
                {
                    IO.logger.log(Level.WARNING, "Error closing FileInputStream", e);
                }
            }
            break;
        }

        while (true)
        {
            /* POTENTIAL FLAW: data could be null */
            if(data.equals("CWE690"))
            {
                IO.writeLine("data is CWE690");
            }
            break;
        }
    }

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

        while (true)
        {
            /* FIX: Set data to a fixed, non-null String */
            data = "CWE690";
            break;
        }

        while (true)
        {
            /* POTENTIAL FLAW: data could be null */
            if(data.equals("CWE690"))
            {
                IO.writeLine("data is CWE690");
            }
            break;
        }

    }

    /* goodB2G() - use badsource and goodsink */
    private void goodB2G() throws Throwable
    {
        String data;

        while (true)
        {
            FileInputStream streamFileInput = null;
            String propertiesFileName = "./CWE690_NULL_Deref_From_Return__Helper.properties";
            try
            {
                streamFileInput = new FileInputStream(propertiesFileName);
                Properties properties = new Properties();
                properties.load(streamFileInput);
                /* POTENTIAL FLAW: data may be set to null */
                data = properties.getProperty("CWE690");
            }
            catch (IOException exceptIO)
            {
                IO.writeLine("Could not open properties file: " + propertiesFileName);
                data = ""; /* ensure that data is initialized */
            }
            finally
            {
                try
                {
                    if (streamFileInput != null)
                    {
                        streamFileInput.close();
                    }
                }
                catch (IOException e)
                {
                    IO.logger.log(Level.WARNING, "Error closing FileInputStream", e);
                }
            }
            break;
        }

        while (true)
        {
            /* FIX: call equals() on string literal (that is not null) */
            if("CWE690".equals(data))
            {
                IO.writeLine("data is CWE690");
            }
            break;
        }
    }

    public void good() throws Throwable
    {
        goodG2B();
        goodB2G();
    }

    /* 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);
    }
}
