001 /*
002 * Copyright (C) 2010 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
020 package org.crsh.ssh;
021
022 import org.crsh.plugin.CRaSHPlugin;
023 import org.crsh.plugin.PropertyDescriptor;
024 import org.crsh.plugin.ResourceKind;
025 import org.crsh.plugin.Service;
026 import org.crsh.ssh.term.SSHLifeCycle;
027 import org.crsh.vfs.Resource;
028
029 import java.io.File;
030 import java.net.MalformedURLException;
031 import java.net.URL;
032 import java.util.Arrays;
033
034 /**
035 * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
036 * @version $Revision$
037 */
038 public class SSHPlugin extends CRaSHPlugin<SSHPlugin> implements Service {
039
040 /** . */
041 public static final PropertyDescriptor<Integer> SSH_PORT = new PropertyDescriptor<Integer>(Integer.class, "ssh.port", 2000, "The SSH port") {
042 @Override
043 public Integer doParse(String s) {
044 return Integer.parseInt(s);
045 }
046 };
047
048 /** . */
049 public static final PropertyDescriptor<String> SSH_KEYPATH = new PropertyDescriptor<String>(String.class, "ssh.keypath", null, "The path to the key file") {
050 @Override
051 public String doParse(String s) {
052 return s;
053 }
054 };
055
056 /** . */
057 private SSHLifeCycle lifeCycle;
058
059 @Override
060 public SSHPlugin getImplementation() {
061 return this;
062 }
063
064 @Override
065 protected Iterable<PropertyDescriptor<?>> createConfigurationCapabilities() {
066 return Arrays.<PropertyDescriptor<?>>asList(SSH_PORT, SSH_KEYPATH);
067 }
068
069 @Override
070 public void init() {
071
072 //
073 Integer port = getContext().getProperty(SSH_PORT);
074 if (port == null) {
075 log.info("Could not boot SSHD due to missing due to missing port configuration");
076 return;
077 }
078
079 //
080 Resource res = getContext().loadResource("hostkey.pem", ResourceKind.KEY);
081 URL keyURL = null;
082 if (res != null) {
083 keyURL = res.getURL();
084 log.debug("Found key url " + keyURL);
085 }
086
087 // If we have a key path, we convert is as an URL
088 String keyPath = getContext().getProperty(SSH_KEYPATH);
089 if (keyPath != null) {
090 log.debug("Found key path " + keyPath);
091 File f = new File(keyPath);
092 if (f.exists() && f.isFile()) {
093 try {
094 keyURL = f.toURI().toURL();
095 } catch (MalformedURLException e) {
096 log.debug("Ignoring invalid key " + keyPath, e);
097 }
098 } else {
099 log.debug("Ignoring invalid key path " + keyPath);
100 }
101 }
102
103 //
104 if (keyURL == null) {
105 log.info("Could not boot SSHD due to missing key");
106 return;
107 }
108
109 //
110 log.info("Booting SSHD");
111 SSHLifeCycle lifeCycle = new SSHLifeCycle(getContext());
112 lifeCycle.setPort(port);
113 lifeCycle.setKeyURL(keyURL);
114 lifeCycle.init();
115
116 //
117 this.lifeCycle = lifeCycle;
118 }
119
120 @Override
121 public void destroy() {
122 if (lifeCycle != null) {
123 log.info("Shutting down SSHD");
124 lifeCycle.destroy();
125 lifeCycle = null;
126 }
127 }
128 }