deep-c-rsc/JCGO/goclsp/vm/java/net/VMNetworkInterface.java
2021-07-16 17:12:20 -05:00

108 lines
3.1 KiB
Java

/*
* @(#) $(JCGO)/goclsp/vm/java/net/VMNetworkInterface.java --
* VM specific methods for "NetworkInterface" implementation.
**
* Project: JCGO (http://www.ivmaisoft.com/jcgo/)
* Copyright (C) 2001-2009 Ivan Maidanski <ivmai@ivmaisoft.com>
* All rights reserved.
**
* Class specification origin: GNU Classpath v0.93 vm/reference
*/
/*
* This 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, or (at your option)
* any later version.
**
* This software 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 (GPL) for more details.
**
* Linking this library statically or dynamically with other modules is
* making a combined work based on this library. Thus, the terms and
* conditions of the GNU General Public License cover the whole
* combination.
**
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent
* modules, and to copy and distribute the resulting executable under
* terms of your choice, provided that you also meet, for each linked
* independent module, the terms and conditions of the license of that
* module. An independent module is a module which is not derived from
* or based on this library. If you modify this library, you may extend
* this exception to your version of the library, but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
package java.net;
import java.util.HashSet;
import java.util.Set;
final class VMNetworkInterface
{
private static final int IFF_UP = 0x1;
private static final int IFF_LOOPBACK = 0x8;
private static final int IFF_POINTOPOINT = 0x10;
private static final int IFF_RUNNING = 0x40;
private static final int IFF_MULTICAST = 0x800;
final String name;
final Set addresses = new HashSet();
VMNetworkInterface()
{
name = "anyif";
addresses.add(InetAddress.ANY_IF);
}
private VMNetworkInterface(String name)
{
this.name = name;
}
static VMNetworkInterface[] getVMInterfaces()
throws SocketException
{
/* not implemented */
return new VMNetworkInterface[0];
}
static boolean isUp(String name)
throws SocketException
{
return (getIffFlags(name) & (IFF_UP | IFF_RUNNING)) != 0;
}
static boolean isLoopback(String name)
throws SocketException
{
return (getIffFlags(name) & IFF_LOOPBACK) != 0;
}
static boolean isPointToPoint(String name)
throws SocketException
{
return (getIffFlags(name) & IFF_POINTOPOINT) != 0;
}
static boolean supportsMulticast(String name)
throws SocketException
{
return (getIffFlags(name) & IFF_MULTICAST) != 0;
}
private static int getIffFlags(String name)
throws SocketException
{
/* not implemented */
throw new SocketException("not implemented");
}
}