Java/JNDI LDAP/Name

Getting an Object"s Fully Qualified Name

   <source lang="java">
 

import java.util.Hashtable; import javax.naming.Context; import javax.naming.InitialContext; public class Main {

 public static void main(String[] argv) throws Exception {
   String url = "iiop://localhost/";
   Hashtable<String, String> env = new Hashtable<String, String>();
   env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
   env.put(Context.PROVIDER_URL, url);
   Context ctx = new InitialContext(env);
   // Create a subcontext.
   Context childCtx = ctx.createSubcontext("child");
   // Destroy the subcontext.
   ctx.destroySubcontext("child");
   Context obj = (Context) childCtx.lookup("grandChild");
   String fullname = obj.getNameInNamespace();
 }

}

 </source>
   
  
 
  

Parsing a JNDI Composite Name

   <source lang="java">
 

import javax.naming.rupositeName; public class Main {

 public static void main(String[] argv) throws Exception {
   CompositeName composite = new CompositeName("cn=John,o=hits/summary.txt");
   String first = composite.get(0);
   String last = composite.get(composite.size() - 1); 
   composite.add(0, "yourname.ru"); 
   composite.remove(2); 
 }

}

 </source>
   
  
 
  

Parsing a JNDI Compound Name

   <source lang="java">
 

import java.util.Hashtable; import javax.naming.Context; import javax.naming.InitialContext; import javax.naming.Name; import javax.naming.NameParser; public class Main {

 public static void main(String[] argv) throws Exception {
   String url = "iiop://localhost/";
   Hashtable<String, String> env = new Hashtable<String, String>();
   env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
   env.put(Context.PROVIDER_URL, url);
   Context ctx = new InitialContext(env);
   NameParser parser = ctx.getNameParser("");
   Name dn = parser.parse("cn=John, ou=People, o=JNDITutorial");
   dn.remove(1); 
   dn.add(0, "c=us"); 
   dn.add("cn=fs"); 
 }

}

 </source>
   
  
 
  

Replace the placeholders in the filter with the proper values from the userName

   <source lang="java">

/*

* Copyright 2007 The JA-SIG Collaborative. All rights reserved. See license
* distributed with this file and available online at
* http://www.ja-sig.org/products/cas/overview/license/
*/

import java.util.HashMap; import java.util.Map; import javax.naming.NamingException; import javax.naming.directory.DirContext;

/**

* Utilities related to LDAP functions.
* 
* @author Scott Battaglia
* @version $Revision: 42053 $ $Date: 2007-06-10 09:17:55 -0400 (Sun, 10 Jun 2007) $
* @since 3.0
*/

public final class LdapUtils {

   private LdapUtils() {
       // private constructor so that no one can instantiate.
   }
   /**
    * Utility method to replace the placeholders in the filter with the proper
    * values from the userName.
    * 
    * @param filter
    * @param userName
    * @return the filtered string populated with the username
    */
   public static String getFilterWithValues(final String filter,
       final String userName) {
       final Map<String, String> properties = new HashMap<String, String>();
       final String[] userDomain;
       String newFilter = filter;
       properties.put("%u", userName.replace("\\", "\\\\"));
       userDomain = userName.split("@");
       properties.put("%U", userDomain[0]);
       if (userDomain.length > 1) {
           properties.put("%d", userDomain[1]);
           final String[] dcArray = userDomain[1].split("\\.");
           for (int i = 0; i < dcArray.length; i++) {
               properties.put("%" + (i + 1), dcArray[dcArray.length
                   - 1 - i]);
           }
       }
       for (final String key : properties.keySet()) {
           final String value = properties.get(key);
           newFilter = newFilter.replaceAll(key, value);
       }
       return newFilter;
   }
   /**
    * Close the given context and ignore any thrown exception. This is useful
    * for typical finally blocks in manual Ldap statements.
    * 
    * @param context the Ldap context to close
    */
   public static void closeContext(final DirContext context) {
       if (context != null) {
           try {
               context.close();
           } catch (NamingException ex) {
              
           }
       }
   }

}

 </source>
   
  
 
  

Show only the common name (cn) and e-mail address (mail) attributes

   <source lang="java">
 

import java.util.Enumeration; import java.util.Hashtable; import javax.naming.Context; import javax.naming.NamingEnumeration; import javax.naming.directory.Attribute; import javax.naming.directory.Attributes; import javax.naming.directory.DirContext; import javax.naming.directory.InitialDirContext; import javax.naming.directory.SearchControls; import javax.naming.directory.SearchResult; public class Main {

 public static String INITCTX = "com.sun.jndi.ldap.LdapCtxFactory";
 public static String MY_HOST = "ldap://localhost:1389";
 public static String MY_SEARCHBASE = "o=server.ru";
 public static String MY_FILTER = "(sn=Carter)";
 public static String MY_ATTRS[] = { "cn", "mail" };
 public static void main(String args[]) throws Exception {
   Hashtable env = new Hashtable();
   env.put(Context.INITIAL_CONTEXT_FACTORY, INITCTX);
   env.put(Context.PROVIDER_URL, MY_HOST);
   DirContext ctx = new InitialDirContext(env);
   SearchControls constraints = new SearchControls();
   constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
   NamingEnumeration results = ctx.search(MY_SEARCHBASE, MY_FILTER, constraints);
   while (results != null && results.hasMore()) {
     SearchResult sr = (SearchResult) results.next();
     String dn = sr.getName() + ", " + MY_SEARCHBASE;
     System.out.println("Distinguished Name is " + dn);
     Attributes ar = ctx.getAttributes(dn, MY_ATTRS);
     if (ar == null) {
       System.out.println("Entry " + dn + " has none of the specified attributes\n");
       return;
     }
     for (int i = 0; i < MY_ATTRS.length; i++) {
       Attribute attr = ar.get(MY_ATTRS[i]);
       if (attr == null) {
         continue;
       }
       System.out.println(MY_ATTRS[i] + ":");
       for (Enumeration vals = attr.getAll(); vals.hasMoreElements();) {
         System.out.println("\t" + vals.nextElement());
       }
     }
   }
 }

}

 </source>
   
  
 
  

Using a URL as a Name to the Initial Context

   <source lang="java">
 

import javax.naming.InitialContext; public class Main {

 public static void main(String[] argv) throws Exception {
   Object obj = new InitialContext().lookup("iiop://localhost/Sample");
 }

}

 </source>