/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.sshd.agent.local;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.sshd.agent.SshAgent;
import org.apache.sshd.agent.common.AbstractAgentClient;
import org.apache.sshd.client.future.DefaultOpenFuture;
import org.apache.sshd.client.future.OpenFuture;
import org.apache.sshd.common.Channel;
import org.apache.sshd.common.NamedFactory;
import org.apache.sshd.common.SshConstants;
import org.apache.sshd.common.channel.ChannelOutputStream;
import org.apache.sshd.common.future.CloseFuture;
import org.apache.sshd.common.future.SshFuture;
import org.apache.sshd.common.future.SshFutureListener;
import org.apache.sshd.common.util.Buffer;
import org.apache.sshd.server.channel.AbstractServerChannel;
/**
* The client side channel that will receive requests forwards by the SSH server.
*/
public class ChannelAgentForwarding extends AbstractServerChannel {
public static class Factory implements NamedFactory<Channel> {
public String getName() {
return "auth-agent@openssh.com";
}
public Channel create() {
return new ChannelAgentForwarding();
}
}
private String authSocket;
private long pool;
private long handle;
private Thread thread;
private OutputStream out;
private SshAgent agent;
private AgentClient client;
public ChannelAgentForwarding() {
}
protected OpenFuture doInit(Buffer buffer) {
final OpenFuture f = new DefaultOpenFuture(this);
try {
out = new ChannelOutputStream(this, remoteWindow, log, SshConstants.SSH_MSG_CHANNEL_DATA);
agent = session.getFactoryManager().getAgentFactory().createClient(session.getFactoryManager());
client = new AgentClient();
f.setOpened();
} catch (Exception e) {
f.setException(e);
}
return f;
}
private void closeImmediately0() {
// We need to close the channel immediately to remove it from the
// server session's channel table and *not* send a packet to the
// client. A notification was already sent by our caller, or will
// be sent after we return.
//
super.close(true);
// We also need to close the socket.
//
// Socket.close(handle);
}
public CloseFuture close(boolean immediately) {
return super.close(immediately).addListener(new SshFutureListener<CloseFuture>() {
public void operationComplete(CloseFuture sshFuture) {
closeImmediately0();
}
});
}
@Override
public void handleEof() throws IOException {
super.handleEof();
// close(true);
}
protected void doWriteData(byte[] data, int off, int len) throws IOException {
client.messageReceived(new Buffer(data, off, len));
}
protected void doWriteExtendedData(byte[] data, int off, int len) throws IOException {
throw new UnsupportedOperationException("AgentForward channel does not support extended data");
}
protected class AgentClient extends AbstractAgentClient {
public AgentClient() {
super(agent);
}
@Override
protected void reply(Buffer buf) throws IOException {
out.write(buf.array(), buf.rpos(), buf.available());
out.flush();
}
}
}