1 /* 2 * Copyright (c) 2000, 2002, 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 26 package com.sun.jndi.dns; 27 28 29 import java.net.MalformedURLException; 30 import java.util.Hashtable; 31 import java.util.StringTokenizer; 32 33 import com.sun.jndi.toolkit.url.Uri; 34 import com.sun.jndi.toolkit.url.UrlUtil; 35 36 37 /** 38 * A DnsUrl represents a DNS pseudo-URL of the form 39 * <pre> 40 * dns://[host][:port][/[domain]] 41 * or 42 * dns:[/][domain] 43 * </pre> 44 * The host names a DNS server. If the host is not provided, it 45 * indicates that the underlying platform's DNS server(s) should be 46 * used if possible, or that "localhost" should be used otherwise. If 47 * the port is not provided, the DNS default port 53 will be used. 48 * The domain indicates the domain name of the context, and is not 49 * necessarily related to the domain of the server; if it is not 50 * provided, the root domain "." is used. Special characters in 51 * the domain name must be %-escaped as described in RFC 2396. 52 * 53 * @author Scott Seligman 54 */ 55 56 57 public class DnsUrl extends Uri { 58 59 private String domain; // domain name of the context 60 61 62 /** 63 * Given a space-separated list of DNS URLs, returns an array of DnsUrl 64 * objects. 65 */ 66 public static DnsUrl[] fromList(String urlList) 67 throws MalformedURLException { 68 69 DnsUrl[] urls = new DnsUrl[(urlList.length() + 1) / 2]; 70 int i = 0; // next available index in urls 71 StringTokenizer st = new StringTokenizer(urlList, " "); 72 73 while (st.hasMoreTokens()) { 74 urls[i++] = new DnsUrl(st.nextToken()); 75 } 76 DnsUrl[] trimmed = new DnsUrl[i]; 77 System.arraycopy(urls, 0, trimmed, 0, i); 78 return trimmed; 79 } 80 81 public DnsUrl(String url) throws MalformedURLException { 82 super(url); 83 84 if (!scheme.equals("dns")) { 85 throw new MalformedURLException( 86 url + " is not a valid DNS pseudo-URL"); 87 } 88 89 domain = path.startsWith("/") 90 ? path.substring(1) 91 : path; 92 domain = domain.isEmpty() 93 ? "." 94 : UrlUtil.decode(domain); 95 96 // Debug 97 // System.out.println("host=" + host + " port=" + port + 98 // " domain=" + domain); 99 } 100 101 /** 102 * Returns the domain of this URL, or "." if none is provided. 103 * Never null. 104 */ 105 public String getDomain() { 106 return domain; 107 } 108 109 110 /* 111 // Debug 112 public static void main(String args[]) throws MalformedURLException { 113 DnsUrl[] urls = fromList(args[0]); 114 for (int i = 0; i < urls.length; i++) { 115 System.out.println(urls[i].toString()); 116 } 117 } 118 */ 119 }