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Access Active Directory with JNDI

Posted on 2004-08-06
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Last Modified: 2013-11-24
Hi,

I need to get a list of user emails from an NT Domain. is this possible using LDAP and JNDI. If so, could someone plz post code to do that.

thanks.
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Question by:thefallguy
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bvanderveen earned 75 total points
ID: 11739952
Here is some sample code for doing this from a Novell Groupwise server.  Please note, this didn't require any authentication.  Your mileage may vary.  The LDAP tutorials on java.sun.com are pretty good.  Best to first try to view all of the elements.  In this case, I have to parse, because I get back one big string.

===============================
/*
 * Created on Apr 27, 2004
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */

/**
 * @author Bill Vanderveen
 *
 *GroupWise is  
 *
 */
import javax.naming.*;
import javax.naming.directory.*;
import java.util.Hashtable;
import java.util.regex.*;

public class GroupWise {
      
      public static void main(String[] args){
            String s;
            if (args.length > 0)
                  s = getGroupWiseMail(args[0]);
            else
                  s = getGroupWiseMail("NAboulhosn");
            System.out.println("Final answer is: " + s);
                  
      }

    public static String getGroupWiseMail(String s) {
          Hashtable env = new Hashtable();          
          env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
          env.put(Context.PROVIDER_URL,"ldap://168.201.10.9:389");
          DirContext ctx;
          String mail = new String();
        try {
            ctx = new InitialDirContext(env);
         
                //String[] attrIDs = {"mail"};
                  String[] attrIDs = {"uid","sn","givenName","cn","mail","mail","o","ou","title","manager"};
                SearchControls sc = new SearchControls();
                sc.setSearchScope(SearchControls.SUBTREE_SCOPE);  //search subtree
                sc.setReturningAttributes(attrIDs);
                String searchBase = "o=rbc";
                String searchMask = "cn=" + s; //search for uid passed in
                //String searchMask = "sn=Jamison";
          
          
                NamingEnumeration answer = ctx.search(searchBase, searchMask, sc);
                if(answer.hasMore()){
                      SearchResult entry= (SearchResult)answer.next();
                      System.out.println(entry);      
                      mail = getMail(entry.toString());            
                }                            
          }catch(NamingException e){
                e.printStackTrace();
          }  
          return mail;       
    }
   
    private static String getMail(String s){
            Pattern p = Pattern.compile("[,{}]"); //will parse out by comma, curly braces
            String split[] = p.split(s);
            String ret = new String();
            for(int i=0; i < split.length; i++){
                  System.out.println("split[" + i + "]: " + split[i]);
                  if(getElement(split[i]).equalsIgnoreCase("mail")){
                        ret = split[i].substring(split[i].indexOf(':') +1).trim();
                        System.out.println("mail is: " + ret);                        
                  }
                  
            }
            return ret;
                
    }
   
      private static String getElement(String s){
            int t = s.indexOf("=");
            if(t == -1)
                  return null;

            String ret = s.substring(0,t);
            return ret;
            
      }
   
}
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