1/* 2 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26package com.sun.jndi.url.dns; 27 28 29import java.net.MalformedURLException; 30import java.util.Hashtable; 31 32import javax.naming.*; 33import javax.naming.spi.ResolveResult; 34import com.sun.jndi.dns.*; 35import com.sun.jndi.toolkit.url.GenericURLDirContext; 36 37 38/** 39 * A DNS URL context resolves names that are DNS pseudo-URLs. 40 * See com.sun.jndi.dns.DnsUrl for a description of the URL format. 41 * 42 * @author Scott Seligman 43 */ 44 45 46public class dnsURLContext extends GenericURLDirContext { 47 48 public dnsURLContext(Hashtable<?,?> env) { 49 super(env); 50 } 51 52 /** 53 * Resolves the host and port of "url" to a root context connected 54 * to the named DNS server, and returns the domain name as the 55 * remaining name. 56 */ 57 protected ResolveResult getRootURLContext(String url, Hashtable<?,?> env) 58 throws NamingException { 59 60 DnsUrl dnsUrl; 61 try { 62 dnsUrl = new DnsUrl(url); 63 } catch (MalformedURLException e) { 64 throw new InvalidNameException(e.getMessage()); 65 } 66 67 DnsUrl[] urls = new DnsUrl[] { dnsUrl }; 68 String domain = dnsUrl.getDomain(); 69 70 return new ResolveResult( 71 DnsContextFactory.getContext(".", urls, env), 72 new CompositeName().add(domain)); 73 } 74} 75