LDAP: How to get all Groups in Active Directory?

Question

Is there a way to get the names of all groups in Active Directory using java?

Solution 1

Use Java JNDI, and do a search for (objectclass=group) and request the cn attribute. This will get all the groups name.

Code example:

import java.util.Hashtable;

import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;

public class Test {

    public static String ldapUri = "ldap://localhost";
    public static String usersContainer = "cn=users,dc=example,dc=com";

    public static void main(String args[]) {

        if (args.length != 2) {
            System.out.println("Usage: test userName password");
            return;
        }
        String username = args[0];
        String password = args[1];

        Hashtable env = new Hashtable();
        env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
        env.put(Context.PROVIDER_URL, ldapUri);
        env.put(Context.SECURITY_PRINCIPAL, username);
        env.put(Context.SECURITY_CREDENTIALS, password);
        try {
            DirContext ctx = new InitialDirContext(env);
            SearchControls ctls = new SearchControls();
            String[] attrIDs = { "cn" };
            ctls.setReturningAttributes(attrIDs);
            ctls.setSearchScope(SearchControls.ONELEVEL_SCOPE);

            NamingEnumeration answer = ctx.search(usersContainer, "(objectclass=group)", ctls);
            while (answer.hasMore()) {
                SearchResult rslt = (SearchResult) answer.next();
                Attributes attrs = rslt.getAttributes();
                System.out.println(attrs.get("cn"));
            }

            ctx.close();

        } catch (NamingException e) {
            e.printStackTrace();
        }

    }
}

Solution 2

You can use this library. It's easy to use and powerfull

http://code.google.com/p/jedi-obi/

Comments

[user709389]

Thanks for the reply. When I try using this, I get following error: "javax.naming.NamingException: [LDAP: error code 1 - 00000000: LdapErr: DSID-0C090627, comment: In order to perform this operation a successful bind must be completed on the connection., data 0, vece" Any idea?

[kalyan]

Looks like you you have not authenticated correctly. Are you connecting to the correct ldap server? Is your user fdn is correct (like cn=Administrator,cn=users,dc=example,dc=com) and is your password correct?

[user709389]

Yes, my pw was wrong (stupid me). Anyway, now I get following: "javax.naming.AuthenticationException: [LDAP: error code 49 - 80090308: LdapErr: DSID-0C090334, comment: AcceptSecurityContext error, data 525, vece"

[user709389]

I think I succeeded a bit, but this is what i get now: "javax.naming.PartialResultException: [LDAP: error code 10 - 0000202B: RefErr: DSID-031006E0, data 0, 1 access points ref 1: 'example.com' ]; remaining name 'cn=testuser,dc=example,dc=com'" testuser is the name of user that I use. Is there something wrong with my userContainer? public static String usersContainer = "cn=testuser,dc=example,dc=com"; ??? "

[kalyan]

change the userContainer to "dc=example,dc=com". We are using userContainer as the basedn for the search. I just used an example "cn=users,dc=example,dc=com". Change it based on your directory structure.

[Jacobi]

@ceving see this link code.google.com/p/jedi-obi/wiki/HomeUkVersion But just this, I see that all the Java DOC is in English

[paulsm4]

@kalyan - great example! Thank you!

[Roknauta]

How filter by user ?

[geisterfurz007]

Please don't just post some tool or library as an answer. At least demonstrate how it solves the problem in the answer itself.

[griffon vulture]

The problem is the number of requests to the LDAP server will be as the number of groups existing! is there a way to get all groups in one request?