mirror of git://gcc.gnu.org/git/gcc.git
132 lines
3.8 KiB
Java
132 lines
3.8 KiB
Java
/* VMNetworkInterface.java --
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Copyright (C) 2005, 2008 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.net;
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import gnu.classpath.Configuration;
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import java.nio.ByteBuffer;
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import java.util.HashSet;
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import java.util.Set;
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/**
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* This class models a network interface on the host computer. A network
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* interface contains a name (typically associated with a specific
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* hardware adapter) and a list of addresses that are bound to it.
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* For example, an ethernet interface may be named "eth0" and have the
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* address 192.168.1.101 assigned to it.
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*
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* @author Michael Koch (konqueror@gmx.de)
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* @since 1.4
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*/
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final class VMNetworkInterface
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{
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String name;
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Set addresses;
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VMNetworkInterface(String name)
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{
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this.name = name;
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addresses = new HashSet();
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}
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/**
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* Creates a dummy instance which represents any network
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* interface.
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*/
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public VMNetworkInterface()
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{
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addresses = new HashSet();
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try
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{
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addresses.add(InetAddress.getByName("0.0.0.0"));
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}
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catch (UnknownHostException _)
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{
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// Cannot happen.
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}
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}
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static
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{
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if (Configuration.INIT_LOAD_LIBRARY)
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System.loadLibrary("javanet");
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initIds();
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}
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private static native void initIds();
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/**
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* Return a list of VM network interface objects.
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*
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* @return The list of network interfaces.
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* @throws SocketException
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*/
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public static native VMNetworkInterface[] getVMInterfaces()
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throws SocketException;
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private void addAddress(ByteBuffer addr)
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throws SocketException, UnknownHostException
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{
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if (addr.remaining() == 4)
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{
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byte[] ipv4 = new byte[4];
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addr.get(ipv4);
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addresses.add(Inet4Address.getByAddress(ipv4));
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}
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else if (addr.remaining() == 16)
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{
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byte[] ipv6 = new byte[16];
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addr.get(ipv6);
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addresses.add(Inet6Address.getByAddress(ipv6));
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}
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else
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throw new SocketException("invalid interface address");
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}
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static native boolean isUp(String name) throws SocketException;
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static native boolean isLoopback(String name) throws SocketException;
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static native boolean isPointToPoint(String name) throws SocketException;
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static native boolean supportsMulticast(String name) throws SocketException;
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}
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