/*
* $Id$
*
* 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.shell.isolate;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.SocketAddress;
import java.net.SocketException;
import java.net.SocketImpl;
import java.net.UnknownHostException;
/**
* The implementation class for IsolateSoccket.
*
* @author crawley@jnode.org
*/
public class IsolateSocketImpl extends SocketImpl {
private final InputStream in;
private final OutputStream out;
private boolean closed;
private final InetAddress dummyAddress;
private IsolateSocketImpl(InputStream in, OutputStream out) {
super();
this.in = in;
this.out = out;
InetAddress d;
try {
d = InetAddress.getByAddress(new byte[]{0, 0, 0, 0});
} catch (UnknownHostException ex) {
d = null;
}
this.dummyAddress = d;
}
public IsolateSocketImpl(InputStream in) {
this(in, null);
}
public IsolateSocketImpl(OutputStream out) {
this(null, out);
}
@Override
protected void accept(SocketImpl s) throws IOException {
throw new UnsupportedOperationException();
}
@Override
protected int available() throws IOException {
if (in == null) {
throw new SocketException("socket is closed");
}
return in.available();
}
@Override
protected InetAddress getInetAddress() {
// We have to return something non-null because the generic Socket code uses
// a non-null address to indicate that the socket is connected.
return dummyAddress;
}
@Override
protected void bind(InetAddress host, int port) throws IOException {
throw new UnsupportedOperationException();
}
@Override
protected synchronized void close() throws IOException {
if (!closed) {
if (in != null) {
in.close();
}
if (out != null) {
out.close();
}
closed = true;
}
}
@Override
protected void connect(String host, int port) throws IOException {
throw new UnsupportedOperationException();
}
@Override
protected void connect(InetAddress host, int port) throws IOException {
throw new UnsupportedOperationException();
}
@Override
protected void connect(SocketAddress address, int timeout) throws IOException {
throw new UnsupportedOperationException();
}
@Override
protected void create(boolean stream) throws IOException {
// Do nothing,
}
@Override
protected synchronized InputStream getInputStream() throws IOException {
if (closed || in == null) {
throw new SocketException("socket is closed");
}
return in;
}
@Override
protected synchronized OutputStream getOutputStream() throws IOException {
if (closed || out == null) {
throw new SocketException("socket is closed");
}
return out;
}
@Override
protected void listen(int backlog) throws IOException {
throw new UnsupportedOperationException();
}
@Override
protected void sendUrgentData(int data) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public Object getOption(int optID) throws SocketException {
// no options supported
return null;
}
@Override
public void setOption(int optID, Object value) throws SocketException {
// no options supported
}
}