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- /*
- * Copyright (c) 2006-2008 Chris Smith, Shane Mc Cormack, Gregory Holmes
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
- package com.dmdirc.addons.dns;
-
- import com.dmdirc.commandparser.CommandManager;
- import com.dmdirc.plugins.Plugin;
-
- import java.net.InetAddress;
- import java.net.UnknownHostException;
-
- import java.util.ArrayList;
- import java.util.List;
-
- /**
- * DNS plugin.
- */
- public final class DNSPlugin extends Plugin {
-
- /** The DNSCommand we've registered. */
- private DNSCommand command;
-
- /** Creates a new instance of DNSPlugin. */
- public DNSPlugin() {
- super();
- }
-
- /** {@inheritDoc} */
- public void onLoad() {
- command = new DNSCommand();
- }
-
- /** {@inheritDoc} */
- public void onUnload() {
- CommandManager.unregisterCommand(command);
- }
-
- /**
- * Returns the IP(s) for a hostname.
- *
- * @param hostname Hostname to resolve.
- *
- * @return Resolved IP(s)
- */
- public static String getIPs(final String hostname) {
- List<String> results = new ArrayList<String>();
-
- try {
- final InetAddress[] ips = InetAddress.getAllByName(hostname);
-
- for (InetAddress ip : ips) {
- results.add(ip.getHostAddress());
- }
-
- } catch (UnknownHostException ex) {
- results = new ArrayList<String>();
- }
-
- return results.toString();
- }
-
- /**
- * Returns the hostname for an ip.
- *
- * @param ip IP to resolve
- *
- * @return Resolved hostname
- */
- public static String getHostname(final String ip) {
- try {
- return InetAddress.getByName(ip).getHostName();
- } catch (UnknownHostException ex) {
- return "";
- }
- }
-
- }
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