net.fenyo.gnetwatch.targets.TargetIPv4Subnet.java Source code

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Here is the source code for net.fenyo.gnetwatch.targets.TargetIPv4Subnet.java

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/*
 * GNetWatch
 * Copyright 2006, 2007, 2008 Alexandre Fenyo
 * gnetwatch@fenyo.net
 *
 * This file is part of GNetWatch.
 *
 * GNetWatch is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * GNetWatch 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNetWatch; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

package net.fenyo.gnetwatch.targets;

import net.fenyo.gnetwatch.*;
import net.fenyo.gnetwatch.GUI.GUI;
import net.fenyo.gnetwatch.GUI.VisualElement;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.net.*;

/**
 * TargetIPv4Subnet implements an IPv4 subnet defined by a subnet address and a subnet mask.
 * @author Alexandre Fenyo
 * @version $Id: TargetIPv4Subnet.java,v 1.13 2008/04/15 23:58:17 fenyo Exp $
 */

public class TargetIPv4Subnet extends Target {
    private static Log log = LogFactory.getLog(TargetIPv4Subnet.class);

    // persistent - not null
    private Inet4Address network;

    // persistent - not null
    private Inet4Address netmask;

    /**
     * Constructor.
     * @param name target name.
     * @param network network address.
     * @param netmask netmask value.
     * @throws AlgorithmException exception.
     */
    // GUI thread
    public TargetIPv4Subnet(final String name, final Inet4Address network, final Inet4Address netmask)
            throws AlgorithmException {
        super(name);
        if (network == null || netmask == null)
            throw new AlgorithmException("network or netmask is null");
        this.network = network;
        this.netmask = netmask;
        setItem(network.getHostAddress() + "/" + netmask.getHostAddress());
    }

    public TargetIPv4Subnet() throws AlgorithmException {
    }

    /**
     * Initializes this target.
     * @param gui current GUI instance.
     * @return void.
     */
    public void initialize(final GUI gui) {
        super.initialize(gui);
        if (gui != null)
            setImageNetwork();
    }

    /**
     * Returns the network address of this subnet.
     * @param none.
     * @return Inet4Address network address.
     */
    // any thread
    protected Inet4Address getNetwork() {
        return network;
    }

    public void setNetwork(final Inet4Address network) {
        this.network = network;
    }

    /**
     * Returns the netmask of this subnet.
     * @param none.
     * @return Inet4Address netmask.
     */
    // any thread
    protected Inet4Address getNetmask() {
        return netmask;
    }

    public void setNetmask(final Inet4Address netmask) {
        this.netmask = netmask;
    }

    /**
     * Checks that the parameter can be attached to this target.
     * @param visual_element parameter to check.
     * @return true if the parameter can be attached to this target.
     */
    public boolean canManageThisChild(final VisualElement visual_element) {
        if (TargetIPv4.class.isInstance(visual_element))
            return true;
        return false;
    }

    /**
     * Compares two targets.
     * @param o target to compare to.
     * @return true if the targets are equal.
     */
    // any thread
    public boolean equals(final Object o) {
        if (this == o)
            return true;
        if ((o == null) || (o.getClass() != getClass()))
            return false;
        final TargetIPv4Subnet target = (TargetIPv4Subnet) o;
        return getNetwork().equals(target.getNetwork()) && getNetmask().equals(target.getNetmask());
    }

    /**
     * Returns the hashcode for this target.
     * @param none.
     * @return int hashcode.
     */
    // any thread
    public int hashCode() {
        return getNetwork().hashCode() ^ getNetmask().hashCode();
    }
}