org.apache.sshd.agent.unix.AgentForwardedChannel Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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package org.apache.sshd.agent.unix;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.sshd.client.channel.AbstractClientChannel;
import org.apache.sshd.common.Closeable;
import org.apache.sshd.common.SshConstants;
import org.apache.sshd.common.channel.ChannelOutputStream;
import org.apache.sshd.common.channel.LocalWindow;
import org.apache.sshd.common.util.ValidateUtils;
import org.apache.tomcat.jni.Socket;
import org.apache.tomcat.jni.Status;
public class AgentForwardedChannel extends AbstractClientChannel implements Runnable {
private final long socket;
public AgentForwardedChannel(long socket, String channelType) {
super(channelType);
this.socket = socket;
}
@Override
public void run() {
try {
byte[] buf = new byte[1024];
OutputStream invIn = getInvertedIn();
while (true) {
int result = Socket.recv(socket, buf, 0, buf.length);
if (result == -Status.APR_EOF) {
break;
} else if (result < Status.APR_SUCCESS) {
throw AgentServerProxy.toIOException(result);
}
invIn.write(buf, 0, result);
invIn.flush();
}
} catch (Exception e) {
log.warn("Processing loop exception", e);
} finally {
close(false);
}
}
@Override
protected synchronized void doOpen() throws IOException {
ValidateUtils.checkTrue(!Streaming.Async.equals(streaming),
"Asynchronous streaming isn't supported yet on this channel");
invertedIn = new ChannelOutputStream(this, getRemoteWindow(), log, SshConstants.SSH_MSG_CHANNEL_DATA, true);
}
@Override
protected Closeable getInnerCloseable() {
return builder()
.close(super.getInnerCloseable())
.run(toString(), () -> Socket.close(socket))
.build();
}
@Override
protected synchronized void doWriteData(byte[] data, int off, long len) throws IOException {
ValidateUtils.checkTrue(len <= Integer.MAX_VALUE, "Data length exceeds int boundaries: %d", len);
LocalWindow wLocal = getLocalWindow();
wLocal.release(len);
int result = Socket.send(socket, data, off, (int) len);
if (result < Status.APR_SUCCESS) {
throw AgentServerProxy.toIOException(result);
}
}
}
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