/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE690_NULL_Deref_From_Return__System_getProperty_trim_74a.java
Label Definition File: CWE690_NULL_Deref_From_Return.label.xml
Template File: sources-sinks-74a.tmpl.java
*/
/*
 * @description
 * CWE: 690 Unchecked return value is null, leading to a null pointer dereference.
 * BadSource: System_getProperty Set data to return of System.getProperty
 * GoodSource: Set data to fixed, non-null String
 * Sinks: trim
 *    GoodSink: Check data for null before calling trim()
 *    BadSink : Call trim() on possibly null object
 * Flow Variant: 74 Data flow: data passed in a HashMap from one method to another in different source files in the same package
 *
 * */




import java.util.HashMap;



public class CWE690_NULL_Deref_From_Return__System_getProperty_trim_74a extends AbstractTestCase
{
    public void bad() throws Throwable
    {
        String data;

        /* POTENTIAL FLAW: data may be set to null */
        data = System.getProperty("CWE690");

        HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>();
        dataHashMap.put(0, data);
        dataHashMap.put(1, data);
        dataHashMap.put(2, data);
        (new CWE690_NULL_Deref_From_Return__System_getProperty_trim_74b()).badSink(dataHashMap  );
    }

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

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

        /* FIX: Set data to a fixed, non-null String */
        data = "CWE690";

        HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>();
        dataHashMap.put(0, data);
        dataHashMap.put(1, data);
        dataHashMap.put(2, data);
        (new CWE690_NULL_Deref_From_Return__System_getProperty_trim_74b()).goodG2BSink(dataHashMap  );
    }

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

        /* POTENTIAL FLAW: data may be set to null */
        data = System.getProperty("CWE690");

        HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>();
        dataHashMap.put(0, data);
        dataHashMap.put(1, data);
        dataHashMap.put(2, data);
        (new CWE690_NULL_Deref_From_Return__System_getProperty_trim_74b()).goodB2GSink(dataHashMap  );
    }

    /* 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);
    }
}
