| /* |
| * 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.IOException; |
| import java.io.InputStream; |
| import java.io.ObjectInputStream; |
| import java.net.URL; |
| import java.security.KeyPair; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.felix.service.command.CommandSession; |
| import org.apache.sshd.agent.SshAgent; |
| import org.apache.sshd.agent.SshAgentFactory; |
| import org.apache.sshd.agent.SshAgentServer; |
| import org.apache.sshd.agent.common.AgentDelegate; |
| import org.apache.sshd.agent.local.AgentImpl; |
| import org.apache.sshd.agent.local.AgentServerProxy; |
| import org.apache.sshd.agent.local.ChannelAgentForwarding; |
| import org.apache.sshd.common.Channel; |
| import org.apache.sshd.common.FactoryManager; |
| import org.apache.sshd.common.NamedFactory; |
| import org.apache.sshd.common.Session; |
| import org.apache.sshd.common.session.ConnectionService; |
| import org.apache.sshd.server.session.ServerSession; |
| import org.osgi.framework.BundleContext; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class KarafAgentFactory implements SshAgentFactory { |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger(KarafAgentFactory.class); |
| |
| private final Map<String, AgentServerProxy> proxies = new ConcurrentHashMap<String, AgentServerProxy>(); |
| private final Map<String, SshAgent> locals = new ConcurrentHashMap<String, SshAgent>(); |
| |
| private BundleContext bundleContext; |
| |
| public BundleContext getBundleContext() { |
| return bundleContext; |
| } |
| |
| public void setBundleContext(BundleContext bundleContext) { |
| this.bundleContext = bundleContext; |
| } |
| |
| public NamedFactory<Channel> getChannelForwardingFactory() { |
| return new ChannelAgentForwarding.Factory(); |
| } |
| |
| public SshAgent createClient(FactoryManager manager) throws IOException { |
| String proxyId = manager.getProperties().get(SshAgent.SSH_AUTHSOCKET_ENV_NAME); |
| if (proxyId == null) { |
| throw new IllegalStateException("No " + SshAgent.SSH_AUTHSOCKET_ENV_NAME + " environment variable set"); |
| } |
| AgentServerProxy proxy = proxies.get(proxyId); |
| if (proxy != null) { |
| return proxy.createClient(); |
| } |
| SshAgent agent = locals.get(proxyId); |
| if (agent != null) { |
| return new AgentDelegate(agent); |
| } |
| throw new IllegalStateException("No ssh agent found"); |
| } |
| |
| public SshAgentServer createServer(ConnectionService service) throws IOException { |
| Session session = service.getSession(); |
| if (!(session instanceof ServerSession)) { |
| throw new IllegalStateException("The session used to create an agent server proxy must be a server session"); |
| } |
| final AgentServerProxy proxy = new AgentServerProxy(service); |
| proxies.put(proxy.getId(), proxy); |
| return new SshAgentServer() { |
| public String getId() { |
| return proxy.getId(); |
| } |
| |
| public void close() { |
| proxies.remove(proxy.getId()); |
| proxy.close(); |
| } |
| }; |
| } |
| |
| public void registerCommandSession(CommandSession session) { |
| try { |
| String user = (String) session.get("USER"); |
| SshAgent agent = new AgentImpl(); |
| URL url = bundleContext.getBundle().getResource("karaf.key"); |
| InputStream is = url.openStream(); |
| ObjectInputStream r = new ObjectInputStream(is); |
| KeyPair keyPair = (KeyPair) r.readObject(); |
| agent.addIdentity(keyPair, "karaf"); |
| String agentId = "local:" + user; |
| session.put(SshAgent.SSH_AUTHSOCKET_ENV_NAME, agentId); |
| locals.put(agentId, agent); |
| } catch (Throwable e) { |
| LOGGER.warn("Error starting ssh agent for local console", e); |
| } |
| } |
| |
| public void unregisterCommandSession(CommandSession session) { |
| try { |
| if (session != null && session.get(SshAgent.SSH_AUTHSOCKET_ENV_NAME) != null) { |
| String agentId = (String) session.get(SshAgent.SSH_AUTHSOCKET_ENV_NAME); |
| session.put(SshAgent.SSH_AUTHSOCKET_ENV_NAME, null); |
| if (agentId != null) { |
| locals.remove(agentId); |
| } |
| } |
| } catch (Throwable e) { |
| LOGGER.warn("Error stopping ssh agent for local console", e); |
| } |
| } |
| |
| } |