79 lines
2.6 KiB
Java
79 lines
2.6 KiB
Java
/*
|
|
* Copyright (c) 2006, 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.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
*/
|
|
|
|
import java.net.*;
|
|
import java.util.*;
|
|
import sun.net.spi.nameservice.*;
|
|
|
|
|
|
public class SimpleNameService implements NameService {
|
|
// host name <-> host addr mapping
|
|
private HashMap<String, String> hosts = new LinkedHashMap<String, String>();
|
|
|
|
public void put(String host, String addr) {
|
|
hosts.put(host, addr);
|
|
}
|
|
|
|
private static String addrToString(byte addr[]) {
|
|
return Byte.toString(addr[0]) + "." +
|
|
Byte.toString(addr[1]) + "." +
|
|
Byte.toString(addr[2]) + "." +
|
|
Byte.toString(addr[3]);
|
|
}
|
|
|
|
public SimpleNameService() {
|
|
}
|
|
|
|
public InetAddress[] lookupAllHostAddr(String host) throws UnknownHostException {
|
|
String addr = hosts.get(host);
|
|
if (addr == null) {
|
|
throw new UnknownHostException(host);
|
|
}
|
|
|
|
StringTokenizer tokenizer = new StringTokenizer(addr, ".");
|
|
byte addrs[] = new byte[4];
|
|
for (int i = 0; i < 4; i++) {
|
|
addrs[i] = (byte)Integer.parseInt(tokenizer.nextToken());
|
|
}
|
|
InetAddress[] ret = new InetAddress[1];
|
|
ret[0] = InetAddress.getByAddress(host, addrs);
|
|
return ret;
|
|
}
|
|
|
|
public String getHostByAddr(byte[] addr) throws UnknownHostException {
|
|
String addrString = addrToString(addr);
|
|
Iterator i = hosts.keySet().iterator();
|
|
while (i.hasNext()) {
|
|
String host = (String)i.next();
|
|
String value = (String)hosts.get(host);
|
|
if (value.equals(addrString)) {
|
|
return host;
|
|
}
|
|
}
|
|
throw new UnknownHostException();
|
|
}
|
|
}
|