/*
* $Id$
*
* 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.command.net;
import java.io.PrintWriter;
import org.jnode.driver.net.NetworkException;
import org.jnode.net.NoSuchProtocolException;
import org.jnode.net.arp.ARPCacheEntry;
import org.jnode.net.arp.ARPNetworkLayer;
import org.jnode.net.ethernet.EthernetConstants;
import org.jnode.net.util.NetUtils;
import org.jnode.shell.AbstractCommand;
import org.jnode.shell.syntax.Argument;
import org.jnode.shell.syntax.FlagArgument;
/**
* @author epr
*/
public class ArpCommand extends AbstractCommand {
@SuppressWarnings("unused")
private static final String help_clear = "if set, clear the ARP cache";
private static final String help_super = "print or clear the ARP cache";
private static final String str_cleared = "Cleared the ARP cache";
private final FlagArgument argClear;
public ArpCommand() {
super(help_super);
argClear = new FlagArgument("clear", Argument.OPTIONAL, help_super);
registerArguments(argClear);
}
/**
* Execute this command
*/
public static void main(String[] args) throws Exception {
new ArpCommand().execute(args);
}
public void execute() throws NoSuchProtocolException, NetworkException {
ARPNetworkLayer arp = (ARPNetworkLayer)
NetUtils.getNLM().getNetworkLayer(EthernetConstants.ETH_P_ARP);
PrintWriter out = getOutput().getPrintWriter();
if (argClear.isSet()) {
arp.getCache().clear();
out.println(str_cleared);
} else {
for (ARPCacheEntry entry : arp.getCache().entries()) {
out.println(entry);
}
}
}
}