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* 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.
*
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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
* <pre>
* dns://[host][:port][/[domain]]
* or
* dns:[/][domain]
* </pre>
* 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());
}
}
*/
}