/* * Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.jndi.dns; import java.net.MalformedURLException; import java.util.Hashtable; import java.util.StringTokenizer; import com.sun.jndi.toolkit.url.Uri; import com.sun.jndi.toolkit.url.UrlUtil; /** * A DnsUrl represents a DNS pseudo-URL of the form *
 *   dns://[host][:port][/[domain]]
 * or
 *   dns:[/][domain]
 * 
* The host names a DNS server. If the host is not provided, it * indicates that the underlying platform's DNS server(s) should be * used if possible, or that "localhost" should be used otherwise. If * the port is not provided, the DNS default port 53 will be used. * The domain indicates the domain name of the context, and is not * necessarily related to the domain of the server; if it is not * provided, the root domain "." is used. Special characters in * the domain name must be %-escaped as described in RFC 2396. * * @author Scott Seligman */ public class DnsUrl extends Uri { private String domain; // domain name of the context /** * Given a space-separated list of DNS URLs, returns an array of DnsUrl * objects. */ public static DnsUrl[] fromList(String urlList) throws MalformedURLException { DnsUrl[] urls = new DnsUrl[(urlList.length() + 1) / 2]; int i = 0; // next available index in urls StringTokenizer st = new StringTokenizer(urlList, " "); while (st.hasMoreTokens()) { urls[i++] = new DnsUrl(st.nextToken()); } DnsUrl[] trimmed = new DnsUrl[i]; System.arraycopy(urls, 0, trimmed, 0, i); return trimmed; } public DnsUrl(String url) throws MalformedURLException { super(url); if (!scheme.equals("dns")) { throw new MalformedURLException( url + " is not a valid DNS pseudo-URL"); } domain = path.startsWith("/") ? path.substring(1) : path; domain = domain.equals("") ? "." : UrlUtil.decode(domain); // Debug // System.out.println("host=" + host + " port=" + port + // " domain=" + domain); } /** * Returns the domain of this URL, or "." if none is provided. * Never null. */ public String getDomain() { return domain; } /* // Debug public static void main(String args[]) throws MalformedURLException { DnsUrl[] urls = fromList(args[0]); for (int i = 0; i < urls.length; i++) { System.out.println(urls[i].toString()); } } */ }