Java ldap connection problem

[Nuno Quiterio]

Hello to all,

Since 4 years that i'm using LDAP in my intranet to authenticate the users with active directory. Since 2 weeks that (and i don't know why) this code and connection is not working so well. Sometimes the connection don't start and i don't have permissions. If i restart the TOmcat (not always) the authentication starts well but again goes down.

One thing is that i have two Domain COntrollers and one has a problem and we have to use the intranet Server as a Domain Controller... But on my laptop (not a domain controller) i'm having also the same things.

I debug the code and i receive the following error message "[Root exception is java.net.ConnectException: Connection timed out: connect", i search and i see one thing in one forum saying to add to the hosts file the ip of the intranet server plus FDQN and the server name

Ex: 192.168.1.1 test.dominio.com test

After this i start to work well and all the authentication was running but now again... I'm completly blind because i don't have any clue....


Sorry, i don't know if this is the right forum...

Thanks in advanced,

Nuno

This is my code:

public class LDAPLogin {
	
	 protected String ATTRIBUTE_FOR_USER = "sAMAccountName";
	 
     public Attributes authenticateUser(String username, String password, String _domain, String host, String dn)
     {

           String returnedAtts[] ={ "sn", "givenName"};

           String searchFilter = "(&(objectClass=user)(" + ATTRIBUTE_FOR_USER + "=" + username + "))";
           
           //Create the search controls
           SearchControls searchCtls = new SearchControls();
           searchCtls.setReturningAttributes(returnedAtts);

           //Specify the search scope 
           searchCtls.setSearchScope(SearchControls.SUBTREE_SCOPE);
           String searchBase = dn;
           Hashtable environment = new Hashtable();
           environment.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");

           //Using starndard Port, check your instalation
           environment.put(Context.PROVIDER_URL, "ldap://" + host + ":389");
           environment.put(Context.SECURITY_AUTHENTICATION, "simple");

           environment.put(Context.SECURITY_PRINCIPAL, username + "@" + _domain);
           environment.put(Context.SECURITY_CREDENTIALS, password);
           
           LdapContext ctxGC = null;
           
           try
           {
                 ctxGC = new InitialLdapContext(environment, null);

                 //    Search for objects in the GC using the filter
                 NamingEnumeration answer = ctxGC.search(searchBase, searchFilter, searchCtls);
                 while (answer.hasMoreElements())
                 {
                       SearchResult sr = (SearchResult)answer.next();
                       Attributes attrs = sr.getAttributes();
                       if (attrs != null)
                       {
                           	ctxGC.close();
                            return attrs;
                       }
                 }

            }
           catch (NamingException e)
           {
                 System.out.println(username+" não tem permissões de acesso!");
                 //e.printStackTrace();
           }

           return null;
     }
}

[Rob Spoor]

Welcome to the Ranch, Nuno!

Please UseCodeTags next time. I've added them for you this time, and see how much easier it is to read your code part.