| /* |
| * 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.karaf.shell.ssh; |
| |
| import java.io.Closeable; |
| import java.io.FilterOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.PrintStream; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Properties; |
| import java.util.concurrent.Callable; |
| |
| import jline.Terminal; |
| import org.apache.karaf.shell.console.Completer; |
| import org.apache.karaf.shell.console.completer.AggregateCompleter; |
| import org.apache.karaf.shell.console.jline.Console; |
| import org.apache.sshd.common.Factory; |
| import org.apache.sshd.server.Command; |
| import org.apache.sshd.server.Environment; |
| import org.apache.sshd.server.ExitCallback; |
| import org.apache.sshd.server.Signal; |
| import org.apache.sshd.server.SignalListener; |
| import org.osgi.service.blueprint.container.ReifiedType; |
| import org.osgi.service.command.CommandProcessor; |
| import org.osgi.service.command.CommandSession; |
| |
| /** |
| * SSHD {@link org.apache.sshd.server.Command} factory which provides access to Shell. |
| * |
| * @version $Rev: 731517 $ $Date: 2009-01-05 11:25:19 +0100 (Mon, 05 Jan 2009) $ |
| */ |
| public class ShellFactoryImpl implements Factory<Command> |
| { |
| private CommandProcessor commandProcessor; |
| |
| public void setCommandProcessor(CommandProcessor commandProcessor) { |
| this.commandProcessor = commandProcessor; |
| } |
| |
| public Command create() { |
| return new ShellImpl(); |
| } |
| |
| public class ShellImpl implements Command |
| { |
| private InputStream in; |
| |
| private OutputStream out; |
| |
| private OutputStream err; |
| |
| private ExitCallback callback; |
| |
| private boolean closed; |
| |
| public void setInputStream(final InputStream in) { |
| this.in = in; |
| } |
| |
| public void setOutputStream(final OutputStream out) { |
| this.out = out; |
| } |
| |
| public void setErrorStream(final OutputStream err) { |
| this.err = err; |
| } |
| |
| public void setExitCallback(ExitCallback callback) { |
| this.callback = callback; |
| } |
| |
| public void start(final Environment env) throws IOException { |
| try { |
| final Terminal terminal = new SshTerminal(env); |
| Console console = new Console(commandProcessor, |
| in, |
| new PrintStream(new LfToCrLfFilterOutputStream(out), true), |
| new PrintStream(new LfToCrLfFilterOutputStream(err), true), |
| terminal, |
| new Runnable() { |
| public void run() { |
| destroy(); |
| } |
| }); |
| final CommandSession session = console.getSession(); |
| session.put("APPLICATION", System.getProperty("karaf.name", "root")); |
| for (Map.Entry<String,String> e : env.getEnv().entrySet()) { |
| session.put(e.getKey(), e.getValue()); |
| } |
| session.put("LINES", Integer.toString(terminal.getTerminalHeight())); |
| session.put("COLUMNS", Integer.toString(terminal.getTerminalWidth())); |
| env.addSignalListener(new SignalListener() { |
| public void signal(Signal signal) { |
| session.put("LINES", Integer.toString(terminal.getTerminalHeight())); |
| session.put("COLUMNS", Integer.toString(terminal.getTerminalWidth())); |
| } |
| }, Signal.WINCH); |
| session.put(".jline.terminal", terminal); |
| new Thread(console).start(); |
| } catch (Exception e) { |
| throw (IOException) new IOException("Unable to start shell").initCause(e); |
| } |
| } |
| |
| public void destroy() { |
| if (!closed) { |
| closed = true; |
| ShellFactoryImpl.close(in, out, err); |
| callback.onExit(0); |
| } |
| } |
| |
| } |
| |
| private static void close(Closeable... closeables) { |
| for (Closeable c : closeables) { |
| try { |
| c.close(); |
| } catch (IOException e) { |
| // Ignore |
| } |
| } |
| } |
| |
| public static Converter getConverter() { |
| return new Converter(); |
| } |
| |
| public static class Converter implements org.osgi.service.blueprint.container.Converter { |
| |
| public boolean canConvert(Object sourceObject, ReifiedType targetType) { |
| return ShellFactoryImpl.class.isAssignableFrom(sourceObject.getClass()) |
| && Factory.class.equals(targetType.getRawClass()) |
| && Command.class.equals(targetType.getActualTypeArgument(0).getRawClass()); |
| } |
| |
| public Object convert(Object sourceObject, ReifiedType targetType) throws Exception { |
| return sourceObject; |
| } |
| } |
| |
| // TODO: remove this class when sshd use lf->crlf conversion by default |
| public class LfToCrLfFilterOutputStream extends FilterOutputStream { |
| |
| private boolean lastWasCr; |
| |
| public LfToCrLfFilterOutputStream(OutputStream out) { |
| super(out); |
| } |
| |
| @Override |
| public void write(int b) throws IOException { |
| if (!lastWasCr && b == '\n') { |
| out.write('\r'); |
| out.write('\n'); |
| } else { |
| out.write(b); |
| } |
| lastWasCr = b == '\r'; |
| } |
| |
| } |
| |
| |
| } |