/*
* 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.client;
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import jline.Terminal;
import org.apache.karaf.shell.console.jline.TerminalFactory;
import org.apache.sshd.ClientChannel;
import org.apache.sshd.ClientSession;
import org.apache.sshd.SshClient;
import org.apache.sshd.client.channel.ChannelShell;
import org.apache.sshd.client.future.ConnectFuture;
import org.apache.sshd.common.RuntimeSshException;
import org.fusesource.jansi.AnsiConsole;
import org.slf4j.impl.SimpleLogger;
/**
* A very simple
*/
public class Main {
public static void main(String[] args) throws Exception {
String host = "localhost";
int port = 8101;
String user = "karaf";
String password = "karaf";
StringBuilder sb = new StringBuilder();
int level = 1;
int retryAttempts = 0;
int retryDelay = 2;
for (int i = 0; i < args.length; i++) {
if (args[i].charAt(0) == '-') {
if (args[i].equals("-a")) {
port = Integer.parseInt(args[++i]);
} else if (args[i].equals("-h")) {
host = args[++i];
} else if (args[i].equals("-u")) {
user = args[++i];
} else if (args[i].equals("-p")) {
password = args[++i];
} else if (args[i].equals("-v")) {
level++;
} else if (args[i].equals("-r")) {
retryAttempts = Integer.parseInt(args[++i]);
} else if (args[i].equals("-d")) {
retryDelay = Integer.parseInt(args[++i]);
} else if (args[i].equals("--help")) {
System.out.println("Apache Karaf client");
System.out.println(" -a [port] specify the port to connect to");
System.out.println(" -h [host] specify the host to connect to");
System.out.println(" -u [user] specify the user name");
System.out.println(" -p [password] specify the password");
System.out.println(" --help shows this help message");
System.out.println(" -v raise verbosity");
System.out.println(" -r [attempts] retry connection establishment (up to attempts times)");
System.out.println(" -d [delay] intra-retry delay (defaults to 2 seconds)");
System.out.println(" [commands] commands to run");
System.out.println("If no commands are specified, the client will be put in an interactive mode");
System.exit(0);
} else {
System.err.println("Unknown option: " + args[i]);
System.err.println("Run with --help for usage");
System.exit(1);
}
} else {
sb.append(args[i]);
sb.append(' ');
}
}
SimpleLogger.setLevel(level);
SshClient client = null;
Terminal terminal = null;
try {
client = SshClient.setUpDefaultClient();
client.start();
int retries = 0;
ClientSession session = null;
do {
ConnectFuture future = client.connect(host, port);
future.await();
try {
session = future.getSession();
} catch (RuntimeSshException ex) {
if (retries++ < retryAttempts) {
Thread.sleep(retryDelay * 1000);
System.out.println("retrying (attempt " + retries + ") ...");
} else {
throw ex;
}
}
} while (session == null);
if (!session.authPassword(user, password).await().isSuccess()) {
throw new Exception("Authentication failure");
}
ClientChannel channel;
if (sb.length() > 0) {
channel = session.createChannel("exec", sb.append("\n").toString());
channel.setIn(new ByteArrayInputStream(new byte[0]));
} else {
terminal = new TerminalFactory().getTerminal();
channel = session.createChannel("shell");
channel.setIn(System.in);
((ChannelShell) channel).setupSensibleDefaultPty();
}
channel.setOut(AnsiConsole.wrapOutputStream(System.out));
channel.setErr(AnsiConsole.wrapOutputStream(System.err));
channel.open();
channel.waitFor(ClientChannel.CLOSED, 0);
} catch (Throwable t) {
if (level > 1) {
t.printStackTrace();
} else {
System.err.println(t.getMessage());
}
System.exit(1);
} finally {
try {
client.stop();
} catch (Throwable t) { }
try {
if (terminal != null) {
terminal.restoreTerminal();
}
} catch (Throwable t) { }
}
System.exit(0);
}
}