Getting list of all users and their group memberships from Active Directory

Question

Hi,
I want to retrieve a list of all the users and their group memberships through JNDI from Active Directory. I am using the following code to achieve this:
==================
import javax.naming.*;
import java.util.Hashtable;
import javax.naming.directory.*;
public class GetUsersGroups{
     public static void main(String[] args){
          String[] attributeNames = {"memberOf"};
          //create an initial directory context
          Hashtable env = new Hashtable();
          env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
          env.put(Context.PROVIDER_URL, "ldap://172.19.1.32:389/");
          env.put(Context.SECURITY_AUTHENTICATION, "simple");
          env.put(Context.SECURITY_PRINCIPAL, "[email protected]");
          env.put(Context.SECURITY_CREDENTIALS, "p8admin");
          try {
               // Create the initial directory context
               DirContext ctx = new InitialDirContext(env);     
               //get all the users list and their group memberships
               NamingEnumeration contentsEnum = ctx.list("CN=Users,DC=filenetp8,DC=com");
               while (contentsEnum.hasMore()){
                    NameClassPair ncp = (NameClassPair) contentsEnum.next();
                    String userName = ncp.getName();
                    System.out.println("User: "+userName);
                    try{
                         System.out.println("am here....1");
                         Attributes attrs = ctx.getAttributes(userName, attributeNames); // only asked for one attribute so only one should be returned
                         System.out.println("am here....2");
                         Attribute groupsAttribute = attrs.get(attributeNames[0]); // memberOf
                         System.out.println("-----"+groupsAttribute.size());
                         if (groupsAttribute != null){
                              // memberOf is a multi valued attribute
                              for (int i=0; i<groupsAttribute.size(); i++){
                              // print out each group that user belongs to
                              System.out.println("MemberOf: "+groupsAttribute.get(i));
                    }catch(NamingException ne){
                    // ignore for now
               System.err.println("Problem encountered....0000:" + ne);
               //get all the groups list
          } catch (NamingException e) {
          System.err.println("Problem encountered 1111:" + e);
=================
The following exception gets thrown at every user entry:
User: CN=Administrator
am here....1
Problem encountered....0000:javax.naming.NamingException: [LDAP: error code 1 -
000020D6: SvcErr: DSID-03100690, problem 5012 (DIR_ERROR), data 0
]; remaining name 'CN=Administrator'
I think it gets thrown at this line in the code:
Attributes attrs = ctx.getAttributes(userName, attributeNames);
Any idea how to overcome this and where am I wrong?
Thanks in advance,
Regards.

Answer 1

In this sentence:
Attributes attrs = ctx.getAttributes(userName, attributeNames); // only asked for one attribute so only one should
It seems Ok when I add "CN=Users,DC=filenetp8,DC=com" after userName, just as
userName + ",CN=Users,DC=filenetp8,DC=com"
But I still have some problem with it.
Hope it will be useful for you.