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/*******************************************************************************
* Copyright (c) 2011, 2017 SAP AG and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Lazar Kirchev, SAP AG - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.console.ssh;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.util.Map;
import org.apache.felix.service.command.CommandProcessor;
import org.apache.felix.service.command.CommandSession;
import org.eclipse.equinox.console.common.ConsoleInputStream;
import org.eclipse.equinox.console.common.ConsoleOutputStream;
import org.eclipse.equinox.console.common.KEYS;
import org.eclipse.equinox.console.common.terminal.TerminalTypeMappings;
import org.eclipse.equinox.console.storage.SecureUserStore;
import org.eclipse.equinox.console.common.ConsoleInputHandler;
import org.eclipse.equinox.console.common.ConsoleInputScanner;
import org.osgi.framework.BundleContext;
/**
* This class manages a ssh connection. It is responsible for wrapping the original io streams
* from the socket, and starting a CommandSession to execute commands from the ssh.
*
*/
public class SshSession extends Thread implements Closeable {
private CommandProcessor processor;
private BundleContext context;
private SshShell sshShell;
private InputStream in;
private OutputStream out;
private TerminalTypeMappings currentMappings;
private Map<String, KEYS> currentEscapesToKey;
private static final String PROMPT = "prompt";
private static final String OSGI_PROMPT = "osgi> ";
private static final String SCOPE = "SCOPE";
private static final String EQUINOX_SCOPE = "equinox:*";
private static final String INPUT_SCANNER = "INPUT_SCANNER";
private static final String SSH_INPUT_SCANNER = "SSH_INPUT_SCANNER";
private static final String USER_STORAGE_PROPERTY_NAME = "osgi.console.ssh.useDefaultSecureStorage";
private static final String DEFAULT_USER = "equinox";
private static final String CLOSEABLE = "CLOSEABLE";
private static final int ADD_USER_COUNTER_LIMIT = 2;
public SshSession(CommandProcessor processor, BundleContext context, SshShell sshShell, InputStream in, OutputStream out, TerminalTypeMappings currentMappings, Map<String, KEYS> currentExcapesToKey) {
this.processor = processor;
this.context = context;
this.sshShell = sshShell;
this.in = in;
this.out = out;
this.currentMappings = currentMappings;
this.currentEscapesToKey = currentExcapesToKey;
}
@Override
public void run() {
ConsoleInputStream input = new ConsoleInputStream();
ConsoleOutputStream outp = new ConsoleOutputStream(out);
SshInputHandler inputHandler = new SshInputHandler(in, input, outp);
inputHandler.getScanner().setBackspace(currentMappings.getBackspace());
inputHandler.getScanner().setDel(currentMappings.getDel());
inputHandler.getScanner().setCurrentEscapesToKey(currentEscapesToKey);
inputHandler.getScanner().setEscapes(currentMappings.getEscapes());
inputHandler.start();
ConsoleInputStream inp = new ConsoleInputStream();
ConsoleInputHandler consoleInputHandler = new ConsoleInputHandler(input, inp, outp);
consoleInputHandler.getScanner().setBackspace(currentMappings.getBackspace());
consoleInputHandler.getScanner().setDel(currentMappings.getDel());
consoleInputHandler.getScanner().setCurrentEscapesToKey(currentEscapesToKey);
consoleInputHandler.getScanner().setEscapes(currentMappings.getEscapes());
((ConsoleInputScanner)consoleInputHandler.getScanner()).setContext(context);
consoleInputHandler.start();
final CommandSession session;
final PrintStream output = new PrintStream(outp);
session = processor.createSession(inp, output, output);
session.put(SCOPE, EQUINOX_SCOPE);
session.put(PROMPT, OSGI_PROMPT);
session.put(INPUT_SCANNER, consoleInputHandler.getScanner());
session.put(SSH_INPUT_SCANNER, inputHandler.getScanner());
// Store this closeable object in the session, so that the disconnect command can close it
session.put(CLOSEABLE, this);
((ConsoleInputScanner)consoleInputHandler.getScanner()).setSession(session);
try {
if ("true".equals(context.getProperty(USER_STORAGE_PROPERTY_NAME))) {
String[] names = SecureUserStore.getUserNames();
for (String name : names) {
// if the default user is the only user, request creation of a new user and delete the default
if (DEFAULT_USER.equals(name)) {
if (names.length == 1) {
session.getConsole().println("Currently the default user is the only one; since it will be deleted after first login, create a new user:");
boolean isUserAdded =false;
int count = 0;
while (!isUserAdded && count < ADD_USER_COUNTER_LIMIT ){
isUserAdded = ((Boolean) session.execute("addUser")).booleanValue();
count++;
}
if (!isUserAdded) {
break;
}
}
if (SecureUserStore.existsUser(name)) {
SecureUserStore.deleteUser(name);
}
break;
}
}
}
session.execute("gosh --login --noshutdown");
} catch (Exception e) {
e.printStackTrace();
} finally {
session.close();
}
}
@Override
public void close() throws IOException {
this.interrupt();
sshShell.removeSession(this);
}
}
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