ldapjdk GSSAPI bind test program

LdapGssDemo.java

import java.util.Hashtable;

import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.Callback;

import netscape.ldap.LDAPConnection;
import netscape.ldap.LDAPEntry;
import netscape.ldap.LDAPUrl;

class Main {
    String SASL_PACKAGE = "com.netscape.sasl";

    public static void main(String[] args) {
        LDAPConnection conn = new LDAPConnection(LDAPUrl.getSocketFactory());

        try {
            // set debug on connection
            conn.setProperty("debug", "true");

            conn.connect("f31-1.ipa.local", 636);
            //conn.bind("cn=Directory Manager", "4me2Test"); // works

            // attempt GSS-API authn
            String[] mechanisms = {"GSSAPI"};
            Hashtable<Object, Object> props = new Hashtable<>();
            conn.bind(null, mechanisms, props, new CBH());

            LDAPEntry entry = conn.read("cn=cas,cn=ca,dc=ipa,dc=local");
            if (entry == null) {
                System.out.println("failed to read entry");
            } else {
                System.out.println(entry.toString());
            }

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

        System.out.println("done");
    }
}

class CBH implements CallbackHandler {
    public void handle(Callback[] callbacks) {
        System.out.println("CALLBACKS:");
        for (int i = 0; i < callbacks.length; i++) {
            System.out.println(callbacks[i].toString());
        }

    }
}