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Active Directory, JNDI, and retrieving Data

Posted on 2003-11-27
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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());
                }
            }
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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

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