/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE90_LDAP_Injection__getParameter_Servlet_06.java
Label Definition File: CWE90_LDAP_Injection.label.xml
Template File: sources-sink-06.tmpl.java
*/
/*
* @description
* CWE: 90 LDAP Injection
* BadSource: getParameter_Servlet Read data from a querystring using getParameter()
* GoodSource: A hardcoded string
* BadSink:  data concatenated into LDAP search, which could result in LDAP Injection
* Flow Variant: 06 Control flow: if(PRIVATE_STATIC_FINAL_FIVE==5) and if(PRIVATE_STATIC_FINAL_FIVE!=5)
*
* */





import javax.servlet.http.*;


import javax.naming.*;
import javax.naming.directory.*;

import java.util.Hashtable;
import java.util.logging.Level;

public class CWE90_LDAP_Injection__getParameter_Servlet_06 extends AbstractTestCaseServlet
{
    /* The variable below is declared "final", so a tool should be able
     * to identify that reads of this will always give its initialized
     * value.
     */
    private static final int PRIVATE_STATIC_FINAL_FIVE = 5;

    /* uses badsource and badsink */
    public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;
        if (PRIVATE_STATIC_FINAL_FIVE == 5)
        {
            /* POTENTIAL FLAW: Read data from a querystring using getParameter */
            data = request.getParameter("name");
        }
        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;
        }

        Hashtable<String, String> environmentHashTable = new Hashtable<String, String>();
        environmentHashTable.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
        environmentHashTable.put(Context.PROVIDER_URL, "ldap://localhost:389");
        DirContext directoryContext = null;

        try
        {
            directoryContext = new InitialDirContext(environmentHashTable);
            /* POTENTIAL FLAW: data concatenated into LDAP search, which could result in LDAP Injection */
            String search = "(cn=" + data + ")";

            NamingEnumeration<SearchResult> answer = directoryContext.search("", search, null);
            while (answer.hasMore())
            {
                SearchResult searchResult = answer.next();
                Attributes attributes = searchResult.getAttributes();
                NamingEnumeration<?> allAttributes = attributes.getAll();
                while (allAttributes.hasMore())
                {
                    Attribute attribute = (Attribute) allAttributes.next();
                    NamingEnumeration<?> allValues = attribute.getAll();
                    while(allValues.hasMore())
                    {
                        IO.writeLine(" Value: " + allValues.next().toString());
                    }
                }
            }
        }
        catch (NamingException exceptNaming)
        {
            IO.logger.log(Level.WARNING, "The LDAP service was not found or login failed.", exceptNaming);
        }
        finally
        {
            if (directoryContext != null)
            {
                try
                {
                    directoryContext.close();
                }
                catch (NamingException exceptNaming)
                {
                    IO.logger.log(Level.WARNING, "Error closing DirContext", exceptNaming);
                }
            }
        }

    }

    /* goodG2B1() - use goodsource and badsink by changing PRIVATE_STATIC_FINAL_FIVE==5 to PRIVATE_STATIC_FINAL_FIVE!=5 */
    private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;
        if (PRIVATE_STATIC_FINAL_FIVE != 5)
        {
            /* 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";

        }

        Hashtable<String, String> environmentHashTable = new Hashtable<String, String>();
        environmentHashTable.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
        environmentHashTable.put(Context.PROVIDER_URL, "ldap://localhost:389");
        DirContext directoryContext = null;

        try
        {
            directoryContext = new InitialDirContext(environmentHashTable);
            /* POTENTIAL FLAW: data concatenated into LDAP search, which could result in LDAP Injection */
            String search = "(cn=" + data + ")";

            NamingEnumeration<SearchResult> answer = directoryContext.search("", search, null);
            while (answer.hasMore())
            {
                SearchResult searchResult = answer.next();
                Attributes attributes = searchResult.getAttributes();
                NamingEnumeration<?> allAttributes = attributes.getAll();
                while (allAttributes.hasMore())
                {
                    Attribute attribute = (Attribute) allAttributes.next();
                    NamingEnumeration<?> allValues = attribute.getAll();
                    while(allValues.hasMore())
                    {
                        IO.writeLine(" Value: " + allValues.next().toString());
                    }
                }
            }
        }
        catch (NamingException exceptNaming)
        {
            IO.logger.log(Level.WARNING, "The LDAP service was not found or login failed.", exceptNaming);
        }
        finally
        {
            if (directoryContext != null)
            {
                try
                {
                    directoryContext.close();
                }
                catch (NamingException exceptNaming)
                {
                    IO.logger.log(Level.WARNING, "Error closing DirContext", exceptNaming);
                }
            }
        }

    }

    /* goodG2B2() - use goodsource and badsink by reversing statements in if */
    private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        String data;
        if (PRIVATE_STATIC_FINAL_FIVE == 5)
        {
            /* 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;
        }

        Hashtable<String, String> environmentHashTable = new Hashtable<String, String>();
        environmentHashTable.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
        environmentHashTable.put(Context.PROVIDER_URL, "ldap://localhost:389");
        DirContext directoryContext = null;

        try
        {
            directoryContext = new InitialDirContext(environmentHashTable);
            /* POTENTIAL FLAW: data concatenated into LDAP search, which could result in LDAP Injection */
            String search = "(cn=" + data + ")";

            NamingEnumeration<SearchResult> answer = directoryContext.search("", search, null);
            while (answer.hasMore())
            {
                SearchResult searchResult = answer.next();
                Attributes attributes = searchResult.getAttributes();
                NamingEnumeration<?> allAttributes = attributes.getAll();
                while (allAttributes.hasMore())
                {
                    Attribute attribute = (Attribute) allAttributes.next();
                    NamingEnumeration<?> allValues = attribute.getAll();
                    while(allValues.hasMore())
                    {
                        IO.writeLine(" Value: " + allValues.next().toString());
                    }
                }
            }
        }
        catch (NamingException exceptNaming)
        {
            IO.logger.log(Level.WARNING, "The LDAP service was not found or login failed.", exceptNaming);
        }
        finally
        {
            if (directoryContext != null)
            {
                try
                {
                    directoryContext.close();
                }
                catch (NamingException exceptNaming)
                {
                    IO.logger.log(Level.WARNING, "Error closing DirContext", exceptNaming);
                }
            }
        }

    }

    public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable
    {
        goodG2B1(request, response);
        goodG2B2(request, response);
    }

    /* 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);
    }
}
