CODEWITHSUNDEEP
javaactive-directoryldap
user709389
user709389

Reputation: 91

LDAP: How to get all Groups in Active Directory?

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

Upvotes: 9

Views: 37475

Answers (3)

kalyan
kalyan

Reputation: 3106

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();
        }

    }
}

Upvotes: 10

PeterK
PeterK

Reputation: 1723

I used Kalyan's example to query for user groups, but found that although the query worked, it did not returned all user groups. After some digging, I became aware of the AD Global Catalogue and based this example, I was able to modify Kalyan's answer to return all user groups from the global catalogue.

The required changes were:

  1. Added global port 3268 to the ldapUri

  2. Set the first parameter to Context.search to "".

    public static void main(String args[]) {
    String ldapUri = "ldap://ad.domain.com";

    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 + ":3268");
    env.put(Context.SECURITY_PRINCIPAL, username);
    env.put(Context.SECURITY_CREDENTIALS, password);
    try {
        DirContext context = new InitialDirContext(env);
        SearchControls searchControls = new SearchControls();
        String[] attrIDs = {"cn"};
        searchControls.setReturningAttributes(attrIDs);
        searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);

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

        context.close();


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

}

Upvotes: 0

xhumeau
xhumeau

Reputation: 31

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

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

Upvotes: 2

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