Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Active Directory, JNDI, and retrieving Data

Posted on 2003-11-27
3
1,206 Views
Last Modified: 2013-11-24
I am having a very difficult time getting my head around LDAP and how to use JNDI.  I have read all the examples and searched the net, but none of the examples ever work for me, no matter how much I manipulate them.  

I am trying to connect to a Windows Server 2003 and retrieve attributes for a particular user.  My company wants to use the Windows authentication for user's wishing to access employee only websites outside the company.  I need to use JNDI in my servlet to authenticate the user.  

This part I have accomplished (see code below).  But I also want to store/retrieve attributes concerning what privileges the user has (what menu's to display, etc.)  But when I attempt to call getAttributes() an error is thrown.  I am assuming it is my arguments in getAttributes, but I don't know what type of arguments to use what is required for it to work properly.  I have used as many variations as I can think of.  Is there a tool to connect to the Active Directory and explore?  I downloaded an ldap browser, which connects, but I can never get in to see anything of value (it asks for a Base DN which I think is the problem).  I have also tried to do searches which also result in an error of similar nature to the one below.

javax.naming.PartialResultException: [LDAP: error code 10 - 0000202B: RefErr: DSID-031006D9, data 0, 1 access points
      ref 1: 'int.mycompany.com'
]; remaining name 'cn=ngalloway,cn=users,DC=int,DC=mycompany,DC=com'
      at com.sun.jndi.ldap.LdapCtx.processReturnCode(LdapCtx.java:2780)
      at com.sun.jndi.ldap.LdapCtx.processReturnCode(LdapCtx.java:2697)
      at com.sun.jndi.ldap.LdapCtx.c_getAttributes(LdapCtx.java:1268)
      at com.sun.jndi.toolkit.ctx.ComponentDirContext.p_getAttributes(ComponentDirContext.java:213)
      at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.getAttributes(PartialCompositeDirContext.java:121)
      at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.getAttributes(PartialCompositeDirContext.java:109)
      at javax.naming.directory.InitialDirContext.getAttributes(InitialDirContext.java:121)
      at javax.naming.directory.InitialDirContext.getAttributes(InitialDirContext.java:116)
      at com.pason.testapps.ldap.LDAPTest.main(LDAPTest.java:69)


/* The Code */

        try
        {
            Hashtable env = new Hashtable();

            env.put(Context.INITIAL_CONTEXT_FACTORY, INITCTX);
            env.put(Context.PROVIDER_URL, MY_HOST);
            env.put(Context.SECURITY_AUTHENTICATION, "simple");
            env.put(Context.SECURITY_PRINCIPAL, "ngalloway@mycompany.com");
            env.put(Context.SECURITY_CREDENTIALS, "mypassword");

            // Get a reference to a directory context
            System.out.println("Getting InitialDirContext");
            DirContext ctx = new InitialDirContext(env);

            Attributes answer = ctx.getAttributes("cn=ngalloway,cn=users,DC=int,DC=mycompany,DC=com");

            for (NamingEnumeration ae = answer.getAll(); ae.hasMore();)
            {
                Attribute attr = (Attribute)ae.next();
                System.out.print(" Attribute: " + attr.getID());
                //Print each value
                for(NamingEnumeration e = attr.getAll(); e.hasMore();)
                {
                    System.out.println(" Value: " + e.next());
                }
            }
0
Comment
Question by:ngalloway
3 Comments
 
LVL 9

Accepted Solution

by:
nimaig earned 300 total points
ID: 10162161
I got the same problem.

Putting  :

env.put(Context.REFERRAL, "follow");


solved the problem.
0
 

Author Comment

by:ngalloway
ID: 10679048
Well this lets me authenticate.  My getAttributes just hangs there now and doesn't return.  On to that problem.  Thanks.
0
 

Expert Comment

by:zhentinglu
ID: 11833344
The solution doesn't fix my problem. In my case, user try to search from the root and the setting is: authentication.extension.ldap.user.baseDN=dc=dev, dc=com.  The following is the tree looklike.

dc=dev, dc=com  (root)
     USER
         u1

The search returned as "cn=u1, cn=USER".

NamingEnumeration ae = context.search(fBaseDN, queryFilter, s);
SearchResult result = (SearchResult)ae.next();
String userObjectName = result.getName();
if ( ae.hasMore() )              (Failed here and exception happens)
{
     ...................
}
0

Featured Post

Free Tool: Postgres Monitoring System

A PHP and Perl based system to collect and display usage statistics from PostgreSQL databases.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
How to execute a Python program and gather return output in Java 2 40
jboss wildfly 10.1 10 228
Glassfish admin console not working 1 32
Java 8 to Java 6 8 20
Introduction This article is the last of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers our test design approach and then goes through a simple test case example, how …
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
Viewers learn about the scanner class in this video and are introduced to receiving user input for their programs. Additionally, objects, conditional statements, and loops are used to help reinforce the concepts. Introduce Scanner class: Importing…
This video teaches viewers about errors in exception handling.

856 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question