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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/vm/reference/java/net/VMNetworkInterface.java | |
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Diffstat (limited to 'libjava/classpath/vm/reference/java/net/VMNetworkInterface.java')
-rw-r--r-- | libjava/classpath/vm/reference/java/net/VMNetworkInterface.java | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/libjava/classpath/vm/reference/java/net/VMNetworkInterface.java b/libjava/classpath/vm/reference/java/net/VMNetworkInterface.java new file mode 100644 index 000000000..fca0c525a --- /dev/null +++ b/libjava/classpath/vm/reference/java/net/VMNetworkInterface.java @@ -0,0 +1,131 @@ +/* VMNetworkInterface.java -- + Copyright (C) 2005, 2008 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath 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. + +GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +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 gnu.classpath.Configuration; + +import java.nio.ByteBuffer; +import java.util.HashSet; +import java.util.Set; + +/** + * This class models a network interface on the host computer. A network + * interface contains a name (typically associated with a specific + * hardware adapter) and a list of addresses that are bound to it. + * For example, an ethernet interface may be named "eth0" and have the + * address 192.168.1.101 assigned to it. + * + * @author Michael Koch (konqueror@gmx.de) + * @since 1.4 + */ +final class VMNetworkInterface +{ + String name; + Set addresses; + + VMNetworkInterface(String name) + { + this.name = name; + addresses = new HashSet(); + } + + /** + * Creates a dummy instance which represents any network + * interface. + */ + public VMNetworkInterface() + { + addresses = new HashSet(); + try + { + addresses.add(InetAddress.getByName("0.0.0.0")); + } + catch (UnknownHostException _) + { + // Cannot happen. + } + } + + static + { + if (Configuration.INIT_LOAD_LIBRARY) + System.loadLibrary("javanet"); + + initIds(); + } + + private static native void initIds(); + + /** + * Return a list of VM network interface objects. + * + * @return The list of network interfaces. + * @throws SocketException + */ + public static native VMNetworkInterface[] getVMInterfaces() + throws SocketException; + + private void addAddress(ByteBuffer addr) + throws SocketException, UnknownHostException + { + if (addr.remaining() == 4) + { + byte[] ipv4 = new byte[4]; + addr.get(ipv4); + addresses.add(Inet4Address.getByAddress(ipv4)); + } + else if (addr.remaining() == 16) + { + byte[] ipv6 = new byte[16]; + addr.get(ipv6); + addresses.add(Inet6Address.getByAddress(ipv6)); + } + else + throw new SocketException("invalid interface address"); + } + + static native boolean isUp(String name) throws SocketException; + + static native boolean isLoopback(String name) throws SocketException; + + static native boolean isPointToPoint(String name) throws SocketException; + + static native boolean supportsMulticast(String name) throws SocketException; + +} |