001 /*
002 * Copyright (C) 2003-2009 eXo Platform SAS.
003 *
004 * This is free software; you can redistribute it and/or modify it
005 * under the terms of the GNU Lesser General Public License as
006 * published by the Free Software Foundation; either version 2.1 of
007 * the License, or (at your option) any later version.
008 *
009 * This software is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this software; if not, write to the Free
016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018 */
019 package org.crsh.ssh.term;
020
021 import org.apache.sshd.SshServer;
022 import org.apache.sshd.common.Session;
023 import org.apache.sshd.common.keyprovider.FileKeyPairProvider;
024 import org.apache.sshd.server.PasswordAuthenticator;
025 import org.apache.sshd.server.session.ServerSession;
026 import org.crsh.plugin.PluginContext;
027 import org.crsh.ssh.term.scp.SCPCommandFactory;
028 import org.crsh.term.TermLifeCycle;
029 import org.crsh.term.spi.TermIOHandler;
030 import org.slf4j.Logger;
031 import org.slf4j.LoggerFactory;
032
033 import java.net.URL;
034
035 /**
036 * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
037 * @version $Revision$
038 */
039 public class SSHLifeCycle extends TermLifeCycle {
040
041 /** . */
042 public static final Session.AttributeKey<String> USERNAME = new Session.AttributeKey<java.lang.String>();
043
044 /** . */
045 public static final Session.AttributeKey<String> PASSWORD = new Session.AttributeKey<java.lang.String>();
046
047 /** . */
048 private final Logger log = LoggerFactory.getLogger(SSHLifeCycle.class);
049
050 /** . */
051 private SshServer server;
052
053 /** . */
054 private int port;
055
056 /** . */
057 private URL keyURL;
058
059 public SSHLifeCycle(PluginContext context) {
060 super(context);
061 }
062
063 public int getPort() {
064 return port;
065 }
066
067 public void setPort(int port) {
068 this.port = port;
069 }
070
071 public URL getKeyURL() {
072 return keyURL;
073 }
074
075 public void setKeyURL(URL keyURL) {
076 this.keyURL = keyURL;
077 }
078
079 @Override
080 protected void doInit() {
081 try {
082
083 //
084 TermIOHandler handler = getHandler();
085
086 //
087 SshServer server = SshServer.setUpDefaultServer();
088 server.setPort(port);
089 server.setShellFactory(new CRaSHCommandFactory(handler));
090 server.setCommandFactory(new SCPCommandFactory(getContext()));
091 server.setKeyPairProvider(new URLKeyPairProvider(keyURL));
092
093 //
094 server.setPasswordAuthenticator(new PasswordAuthenticator() {
095 public boolean authenticate(String _username, String _password, ServerSession session) {
096 session.setAttribute(USERNAME, _username);
097 session.setAttribute(PASSWORD, _password);
098 return true;
099 }
100 });
101
102 //
103 log.info("About to start CRaSSHD");
104 server.start();
105 log.info("CRaSSHD started on port " + port);
106
107 //
108 this.server = server;
109 }
110 catch (Throwable e) {
111 log.error("Could not start CRaSSHD", e);
112 }
113 }
114
115 @Override
116 protected void doDestroy() {
117 if (server != null) {
118 try {
119 server.stop();
120 }
121 catch (InterruptedException e) {
122 log.debug("Got an interruption when stopping server", e);
123 }
124 }
125 }
126 }