/*
* $Id$
*
* 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.service;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.net.VMNetAPI;
import java.net.VMNetDevice;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.jnode.driver.ApiNotFoundException;
import org.jnode.driver.Device;
import org.jnode.driver.DeviceNotFoundException;
import org.jnode.driver.DeviceUtils;
import org.jnode.driver.net.NetDeviceAPI;
import org.jnode.net.NetworkLayer;
import org.jnode.net.ProtocolAddress;
import org.jnode.net.ProtocolAddressInfo;
import org.jnode.net.ethernet.EthernetConstants;
/**
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
public class NetAPIImpl implements VMNetAPI {
private final DefaultNetworkLayerManager nlm;
public NetAPIImpl(DefaultNetworkLayerManager nlm) {
this.nlm = nlm;
}
/**
* @see java.net.VMNetAPI#getInetAddresses(VMNetDevice)
*/
public List<InetAddress> getInetAddresses(VMNetDevice netDevice) {
final ArrayList<InetAddress> list = new ArrayList<InetAddress>();
final SecurityManager sm = System.getSecurityManager();
try {
final NetDeviceImpl netDeviceImpl = (NetDeviceImpl) netDevice;
final NetDeviceAPI api = netDeviceImpl.getDevice().getAPI(NetDeviceAPI.class);
final ProtocolAddressInfo info = api.getProtocolAddressInfo(EthernetConstants.ETH_P_IP);
if (info != null) {
for (ProtocolAddress ipaddr : info.addresses()) {
if (sm != null) {
try {
sm.checkConnect(ipaddr.toString(), 58000);
list.add(ipaddr.toInetAddress());
} catch (SecurityException ex) {
// Just don't add
}
} else {
list.add(ipaddr.toInetAddress());
}
}
}
} catch (ApiNotFoundException ex) {
// Ignore
}
return list;
}
/**
* Is the given device a network device.
*
* @param device
* @return boolean
*/
public boolean isNetDevice(Device device) {
return device.implementsAPI(NetDeviceAPI.class);
}
/**
* Return a network device by its address
*
* @param addr
* The address of the interface to return
* @exception SocketException
* If an error occurs
* @exception NullPointerException
* If the specified addess is null
*/
public VMNetDevice getByInetAddress(InetAddress addr) throws SocketException {
for (Device dev : DeviceUtils.getDevicesByAPI(NetDeviceAPI.class)) {
try {
final NetDeviceAPI api = dev.getAPI(NetDeviceAPI.class);
final ProtocolAddressInfo info = api.getProtocolAddressInfo(EthernetConstants.ETH_P_IP);
if (info != null && info.contains(addr)) {
return new NetDeviceImpl(dev);
}
} catch (ApiNotFoundException ex) {
// Ignore
}
}
throw new SocketException(
"This IP address has not been bound to any registered network device");
}
/**
* Gets all net devices.
*
* @return A list of Device instances.
*/
public Collection<VMNetDevice> getNetDevices() {
final ArrayList<VMNetDevice> list = new ArrayList<VMNetDevice>();
final Collection<Device> devs = DeviceUtils
.getDevicesByAPI(NetDeviceAPI.class);
for (Device dev : devs) {
list.add(new NetDeviceImpl(dev));
}
return list;
}
/**
* Gets the default local address.
*
* @return InetAddress
*/
public InetAddress getLocalAddress() throws UnknownHostException {
final Collection<Device> devices = DeviceUtils
.getDevicesByAPI(NetDeviceAPI.class);
for (Device dev : devices) {
try {
final NetDeviceAPI api = dev.getAPI(NetDeviceAPI.class);
final ProtocolAddressInfo addrInfo =
api.getProtocolAddressInfo(EthernetConstants.ETH_P_IP);
if (addrInfo != null) {
final ProtocolAddress addr = addrInfo.getDefaultAddress();
if (addr != null) {
return addr.toInetAddress();
}
}
} catch (ApiNotFoundException ex) {
// Strange, but ignore
}
}
throw new UnknownHostException(
"No IP addresses have been configured for any registered network device");
}
public byte[][] getHostByName(String hostname) throws UnknownHostException {
ArrayList<byte[]> list = null;
for (NetworkLayer layer : nlm.getNetworkLayers()) {
final ProtocolAddress[] addrs = layer.getHostByName(hostname);
if (addrs != null) {
if (list == null) {
list = new ArrayList<byte[]>();
}
final int cnt = addrs.length;
for (int j = 0; j < cnt; j++) {
final ProtocolAddress pa = addrs[j];
if (pa != null) {
list.add(pa.toByteArray());
}
}
}
}
if ((list == null) || list.isEmpty()) {
throw new UnknownHostException(hostname);
} else {
return (byte[][]) list.toArray(new byte[list.size()][]);
}
}
/**
* @see java.net.VMNetAPI#getHostByAddr(byte[])
*/
public String getHostByAddr(byte[] ip) throws UnknownHostException {
throw new UnknownHostException("Not implemented");
}
/**
* @see java.net.VMNetAPI#getByName(java.lang.String)
*/
public VMNetDevice getByName(String name) {
try {
final Device dev = DeviceUtils.getDevice(name);
if (isNetDevice(dev)) {
return new NetDeviceImpl(dev);
} else {
return null;
}
} catch (DeviceNotFoundException ex) {
return null;
}
}
}