transport/transport-ssh/src/main/java/org/opendaylight/netconf/transport/ssh/SSHServer.java

   1 /*
   2  * Copyright (c) 2022 PANTHEON.tech, s.r.o. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.netconf.transport.ssh;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import io.netty.bootstrap.Bootstrap;
  14 import io.netty.bootstrap.ServerBootstrap;
  15 import io.netty.channel.EventLoopGroup;
  16 import io.netty.channel.group.DefaultChannelGroup;
  17 import io.netty.util.concurrent.GlobalEventExecutor;
  18 import org.eclipse.jdt.annotation.NonNull;
  19 import org.opendaylight.netconf.shaded.sshd.common.io.IoHandler;
  20 import org.opendaylight.netconf.shaded.sshd.server.ServerFactoryManager;
  21 import org.opendaylight.netconf.shaded.sshd.server.session.SessionFactory;
  22 import org.opendaylight.netconf.shaded.sshd.server.subsystem.SubsystemFactory;
  23 import org.opendaylight.netconf.transport.api.TransportChannelListener;
  24 import org.opendaylight.netconf.transport.api.TransportStack;
  25 import org.opendaylight.netconf.transport.api.UnsupportedConfigurationException;
  26 import org.opendaylight.netconf.transport.tcp.TCPClient;
  27 import org.opendaylight.netconf.transport.tcp.TCPServer;
  28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ssh.server.rev230417.SshServerGrouping;
  29 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.tcp.client.rev230417.TcpClientGrouping;
  30 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.tcp.server.rev230417.TcpServerGrouping;
  31
  32 /**
  33  * A {@link TransportStack} acting as an SSH server.
  34  */
  35 public final class SSHServer extends SSHTransportStack {
  36     private final ServerFactoryManager serverFactoryManager;
  37     private final SessionFactory serverSessionFactory;
  38
  39     private SSHServer(final TransportChannelListener listener, final ServerFactoryManager serverFactoryManager) {
  40         super(listener);
  41         this.serverFactoryManager = requireNonNull(serverFactoryManager);
  42         this.serverFactoryManager.addSessionListener(new UserAuthSessionListener(sessionAuthHandlers, sessions));
  43         serverSessionFactory = new SessionFactory(serverFactoryManager);
  44         ioService = new SshIoService(this.serverFactoryManager,
  45                 new DefaultChannelGroup("sshd-server-channels", GlobalEventExecutor.INSTANCE),
  46                 serverSessionFactory);
  47     }
  48
  49     static SSHServer of(final EventLoopGroup group, final TransportChannelListener listener,
  50             final SubsystemFactory subsystemFactory, final SshServerGrouping serverParams,
  51             final ServerFactoryManagerConfigurator configurator) throws UnsupportedConfigurationException {
  52         return new SSHServer(listener, new TransportSshServer.Builder(group, subsystemFactory)
  53             .serverParams(serverParams)
  54             .configurator(configurator)
  55             .buildChecked());
  56     }
  57
  58     @Override
  59     IoHandler getSessionFactory() {
  60         return serverSessionFactory;
  61     }
  62
  63     @NonNull ListenableFuture<SSHServer> connect(final Bootstrap bootstrap, final TcpClientGrouping connectParams)
  64             throws UnsupportedConfigurationException {
  65         return transformUnderlay(this, TCPClient.connect(asListener(), bootstrap, connectParams));
  66     }
  67
  68     @NonNull ListenableFuture<SSHServer> listen(final ServerBootstrap bootstrap, final TcpServerGrouping connectParams)
  69             throws UnsupportedConfigurationException {
  70         return transformUnderlay(this, TCPServer.listen(asListener(), bootstrap, connectParams));
  71     }
  72 }