J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2000-2002 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any 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.equals("") |
| 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 | } |