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