Forumsys.com with mhimu.wordpress.com

import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
import javax.naming.ldap.InitialLdapContext;
import javax.naming.ldap.LdapContext;

public class ADAuthenticator {
    private String domain;
    private String ldapHost;
    private String searchBase;

    public ADAuthenticator() {
    this.domain = "forumsys.com";
    this.ldapHost = "ldap://ldap.forumsys.com:389";
    this.searchBase = "cn=read-only-admin,dc=example,dc=com";
    }

    public ADAuthenticator(String domain, String host, String dn) {
    this.domain = domain;
    this.ldapHost = host;
    this.searchBase = dn;
    }

    public Map authenticate(String user, String pass) {

    String returnedAtts[] = { "sn", "givenName", "mail" };
    String searchFilter = "(&(objectClass=user)(sAMAccountName=" + user + "))";

    // Create the search controls
    SearchControls searchCtls = new SearchControls();
    searchCtls.setReturningAttributes(returnedAtts);

    // Specify the search scope
    searchCtls.setSearchScope(SearchControls.SUBTREE_SCOPE);

    Hashtable env = new Hashtable();
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, ldapHost);
    env.put(Context.SECURITY_AUTHENTICATION, "simple");
    env.put(Context.SECURITY_PRINCIPAL, user + "@" + domain);
    env.put(Context.SECURITY_CREDENTIALS, pass);

    LdapContext ctxGC = null;

    try {
        ctxGC = new InitialLdapContext(env, null);
        // Search objects in GC using filters
        NamingEnumeration answer = ctxGC.search(searchBase, searchFilter, searchCtls);
        while (answer.hasMoreElements()) {
        SearchResult sr = (SearchResult) answer.next();
        Attributes attrs = sr.getAttributes();
        Map amap = null;
        if (attrs != null) {
            amap = new HashMap();
            NamingEnumeration ne = attrs.getAll();
            while (ne.hasMore()) {
            Attribute attr = (Attribute) ne.next();
            amap.put(attr.getID(), attr.get());
            }
            ne.close();
        }
        return amap;
        }
    } catch (NamingException ex) {
        ex.printStackTrace();
    }

    return null;

    }
    //THE TEST
    public static void main(String[] args) {
    ADAuthenticator adAuthenticator = new ADAuthenticator();

    adAuthenticator.authenticate("einstein", "password");

    }

}