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/*
* Copyright (C) 2021, Thomas Wolf <thomas.wolf@paranor.ch> and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.internal.transport.sshd.agent.connector;
import java.io.IOException;
import org.eclipse.jgit.transport.sshd.agent.AbstractConnector;
import org.eclipse.jgit.transport.sshd.agent.ConnectorFactory.ConnectorDescriptor;
/**
* A connector using Pageant's shared memory IPC mechanism.
*/
public class PageantConnector extends AbstractConnector {
/**
* {@link ConnectorDescriptor} for the {@link PageantConnector}.
*/
public static final ConnectorDescriptor DESCRIPTOR = new ConnectorDescriptor() {
@Override
public String getIdentityAgent() {
return "pageant"; //$NON-NLS-1$
}
@Override
public String getDisplayName() {
return Texts.get().pageant;
}
};
private final PageantLibrary lib;
/**
* Creates a new {@link PageantConnector}.
*/
public PageantConnector() {
super(); // Use default maximum message size
this.lib = new PageantLibrary();
}
@Override
public boolean connect() throws IOException {
return lib.isPageantAvailable();
}
@Override
public void close() throws IOException {
// Nothing to do
}
@Override
public byte[] rpc(byte command, byte[] message) throws IOException {
try (PageantLibrary.Pipe pipe = lib
.createPipe(getClass().getSimpleName(),
getMaximumMessageLength())) {
prepareMessage(command, message);
pipe.send(message);
byte[] lengthBuf = new byte[4];
pipe.receive(lengthBuf);
int length = toLength(command, lengthBuf);
byte[] payload = new byte[length];
pipe.receive(payload);
return payload;
}
}
}
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