/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.net.ipv4.config.impl;
import java.util.prefs.Preferences;
import org.jnode.driver.ApiNotFoundException;
import org.jnode.driver.Device;
import org.jnode.driver.net.NetDeviceAPI;
import org.jnode.driver.net.NetworkException;
import org.jnode.net.ethernet.EthernetConstants;
import org.jnode.net.ipv4.IPv4Address;
import org.jnode.net.ipv4.IPv4ProtocolAddressInfo;
/**
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
public class NetStaticDeviceConfig extends NetDeviceConfig {
private IPv4Address address;
private IPv4Address netmask;
private static final String ADDRESS_KEY = "address";
private static final String NETMASK_KEY = "netmask";
/**
* Initialize this instance.
*/
public NetStaticDeviceConfig() {
this(null, null);
}
/**
* Initialize this instance.
*
* @param address
* @param netmask
*/
public NetStaticDeviceConfig(IPv4Address address, IPv4Address netmask) {
this.address = address;
this.netmask = netmask;
}
/**
* @throws NetworkException
* @see org.jnode.net.ipv4.config.impl.NetDeviceConfig#apply(Device)
*/
public void doApply(Device device) throws NetworkException {
final NetDeviceAPI api;
try {
api = device.getAPI(NetDeviceAPI.class);
} catch (ApiNotFoundException ex) {
throw new NetworkException("Device is not a network device", ex);
}
if (netmask == null) {
netmask = address.getDefaultSubnetmask();
}
IPv4ProtocolAddressInfo addrInfo =
(IPv4ProtocolAddressInfo) api.getProtocolAddressInfo(EthernetConstants.ETH_P_IP);
if (addrInfo == null) {
addrInfo = new IPv4ProtocolAddressInfo(address, netmask);
api.setProtocolAddressInfo(EthernetConstants.ETH_P_IP, addrInfo);
} else {
addrInfo.add(address, netmask);
addrInfo.setDefaultAddress(address, netmask);
}
}
/**
* @see org.jnode.net.ipv4.config.impl.NetDeviceConfig#load(java.util.prefs.Preferences)
*/
public void load(Preferences prefs) {
this.address = loadAddress(prefs, ADDRESS_KEY);
this.netmask = loadAddress(prefs, NETMASK_KEY);
}
/**
* @see org.jnode.net.ipv4.config.impl.NetDeviceConfig#store(java.util.prefs.Preferences)
*/
public void store(Preferences prefs) {
storeAddress(prefs, ADDRESS_KEY, address);
storeAddress(prefs, NETMASK_KEY, netmask);
}
/**
* Load a single address from the given preferences.
*
* @param prefs
* @param key
* @return
*/
private final IPv4Address loadAddress(Preferences prefs, String key) {
final String addrStr = prefs.get(key, null);
if (addrStr == null) {
return null;
} else {
return new IPv4Address(addrStr);
}
}
/**
* Store a single address in the given preferences.
*
* @param prefs
* @param key
* @param address
*/
private final void storeAddress(Preferences prefs, String key, IPv4Address address) {
if (address != null) {
prefs.put(key, address.toString());
} else {
prefs.remove(key);
}
}
}