asked on

Active Directory, JNDI, and retrieving Data

I am having a very difficult time getting my head around LDAP and how to use JNDI. I have read all the examples and searched the net, but none of the examples ever work for me, no matter how much I manipulate them.

I am trying to connect to a Windows Server 2003 and retrieve attributes for a particular user. My company wants to use the Windows authentication for user's wishing to access employee only websites outside the company. I need to use JNDI in my servlet to authenticate the user.

This part I have accomplished (see code below). But I also want to store/retrieve attributes concerning what privileges the user has (what menu's to display, etc.) But when I attempt to call getAttributes() an error is thrown. I am assuming it is my arguments in getAttributes, but I don't know what type of arguments to use what is required for it to work properly. I have used as many variations as I can think of. Is there a tool to connect to the Active Directory and explore? I downloaded an ldap browser, which connects, but I can never get in to see anything of value (it asks for a Base DN which I think is the problem). I have also tried to do searches which also result in an error of similar nature to the one below.

javax.naming.PartialResultException: [LDAP: error code 10 - 0000202B: RefErr: DSID-031006D9, data 0, 1 access points
      ref 1: 'int.mycompany.com'
]; remaining name 'cn=ngalloway,cn=users,DC=int,DC=mycompany,DC=com'
      at com.sun.jndi.ldap.LdapCtx.processReturnCode(LdapCtx.java:2780)
      at com.sun.jndi.ldap.LdapCtx.processReturnCode(LdapCtx.java:2697)
      at com.sun.jndi.ldap.LdapCtx.c_getAttributes(LdapCtx.java:1268)
      at com.sun.jndi.toolkit.ctx.ComponentDirContext.p_getAttributes(ComponentDirContext.java:213)
      at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.getAttributes(PartialCompositeDirContext.java:121)
      at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.getAttributes(PartialCompositeDirContext.java:109)
      at javax.naming.directory.InitialDirContext.getAttributes(InitialDirContext.java:121)
      at javax.naming.directory.InitialDirContext.getAttributes(InitialDirContext.java:116)
      at com.pason.testapps.ldap.LDAPTest.main(LDAPTest.java:69)

/* The Code */

try
{
Hashtable env = new Hashtable();

env.put(Context.INITIAL_CONTEXT_FACTORY, INITCTX);
env.put(Context.PROVIDER_URL, MY_HOST);
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, "ngalloway@mycompany.com");
env.put(Context.SECURITY_CREDENTIALS, "mypassword");

// Get a reference to a directory context
System.out.println("Getting InitialDirContext");
DirContext ctx = new InitialDirContext(env);

Attributes answer = ctx.getAttributes("cn=ngalloway,cn=users,DC=int,DC=mycompany,DC=com");

for (NamingEnumeration ae = answer.getAll(); ae.hasMore();)
{
Attribute attr = (Attribute)ae.next();
System.out.print(" Attribute: " + attr.getID());
//Print each value
for(NamingEnumeration e = attr.getAll(); e.hasMore();)
{
System.out.println(" Value: " + e.next());
}
}

ASKER CERTIFIED SOLUTION

nimaig

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

ngalloway

ASKER

Well this lets me authenticate. My getAttributes just hangs there now and doesn't return. On to that problem. Thanks.

zhentinglu

The solution doesn't fix my problem. In my case, user try to search from the root and the setting is: authentication.extension.ldap.user.baseDN=dc=dev, dc=com. The following is the tree looklike.

dc=dev, dc=com (root)
USER
u1

The search returned as "cn=u1, cn=USER".

NamingEnumeration ae = context.search(fBaseDN, queryFilter, s);
SearchResult result = (SearchResult)ae.next();
String userObjectName = result.getName();
if ( ae.hasMore() ) (Failed here and exception happens)
{
...................
}