opendaylight/netconf/netconf-ssh/src/main/java/org/opendaylight/controller/config/yang/netconf/northbound/ssh/NetconfNorthboundSshModule.java

   1 package org.opendaylight.controller.config.yang.netconf.northbound.ssh;
   2
   3 import io.netty.channel.ChannelFuture;
   4 import io.netty.channel.local.LocalAddress;
   5 import io.netty.util.concurrent.GenericFutureListener;
   6 import java.io.IOException;
   7 import java.net.InetAddress;
   8 import java.net.InetSocketAddress;
   9 import java.net.UnknownHostException;
  10 import java.util.concurrent.Executors;
  11 import org.apache.sshd.server.PasswordAuthenticator;
  12 import org.apache.sshd.server.keyprovider.PEMGeneratorHostKeyProvider;
  13 import org.apache.sshd.server.session.ServerSession;
  14 import org.opendaylight.controller.netconf.api.NetconfServerDispatcher;
  15 import org.opendaylight.controller.netconf.ssh.SshProxyServer;
  16 import org.opendaylight.controller.netconf.ssh.SshProxyServerConfigurationBuilder;
  17 import org.slf4j.Logger;
  18 import org.slf4j.LoggerFactory;
  19
  20 public class NetconfNorthboundSshModule extends org.opendaylight.controller.config.yang.netconf.northbound.ssh.AbstractNetconfNorthboundSshModule {
  21
  22     private static final Logger LOG = LoggerFactory.getLogger(NetconfNorthboundSshModule.class);
  23
  24     public NetconfNorthboundSshModule(final org.opendaylight.controller.config.api.ModuleIdentifier identifier, final org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
  25         super(identifier, dependencyResolver);
  26     }
  27
  28     public NetconfNorthboundSshModule(final org.opendaylight.controller.config.api.ModuleIdentifier identifier, final org.opendaylight.controller.config.api.DependencyResolver dependencyResolver, final org.opendaylight.controller.config.yang.netconf.northbound.ssh.NetconfNorthboundSshModule oldModule, final java.lang.AutoCloseable oldInstance) {
  29         super(identifier, dependencyResolver, oldModule, oldInstance);
  30     }
  31
  32     @Override
  33     public void customValidation() {
  34         // add custom validation form module attributes here.
  35     }
  36
  37     @Override
  38     public java.lang.AutoCloseable createInstance() {
  39         final NetconfServerDispatcher dispatch = getDispatcherDependency();
  40
  41         final LocalAddress localAddress = new LocalAddress(getPort().toString());
  42         final ChannelFuture localServer = dispatch.createLocalServer(localAddress);
  43
  44         final SshProxyServer sshProxyServer = new SshProxyServer(Executors.newScheduledThreadPool(1), getWorkerThreadGroupDependency(), getEventExecutorDependency());
  45
  46         final InetSocketAddress bindingAddress = getInetAddress();
  47         final SshProxyServerConfigurationBuilder sshProxyServerConfigurationBuilder = new SshProxyServerConfigurationBuilder();
  48         sshProxyServerConfigurationBuilder.setBindingAddress(bindingAddress);
  49         sshProxyServerConfigurationBuilder.setLocalAddress(localAddress);
  50         sshProxyServerConfigurationBuilder.setAuthenticator(new UserAuthenticator(getUsername(), getPassword()));
  51         sshProxyServerConfigurationBuilder.setIdleTimeout(Integer.MAX_VALUE);
  52         sshProxyServerConfigurationBuilder.setKeyPairProvider(new PEMGeneratorHostKeyProvider());
  53
  54         localServer.addListener(new GenericFutureListener<ChannelFuture>() {
  55
  56             @Override
  57             public void operationComplete(final ChannelFuture future) {
  58                 if(future.isDone() && !future.isCancelled()) {
  59                     try {
  60                         sshProxyServer.bind(sshProxyServerConfigurationBuilder.createSshProxyServerConfiguration());
  61                         LOG.info("Netconf SSH endpoint started successfully at {}", bindingAddress);
  62                     } catch (final IOException e) {
  63                         throw new RuntimeException("Unable to start SSH netconf server", e);
  64                     }
  65                 } else {
  66                     LOG.warn("Unable to start SSH netconf server at {}", bindingAddress, future.cause());
  67                     throw new RuntimeException("Unable to start SSH netconf server", future.cause());
  68                 }
  69             }
  70         });
  71
  72         return new NetconfServerCloseable(localServer, sshProxyServer);
  73     }
  74
  75     private InetSocketAddress getInetAddress() {
  76         try {
  77             final InetAddress inetAd = InetAddress.getByName(getBindingAddress().getIpv4Address() == null ? getBindingAddress().getIpv6Address().getValue() : getBindingAddress().getIpv4Address().getValue());
  78             return new InetSocketAddress(inetAd, getPort().getValue());
  79         } catch (final UnknownHostException e) {
  80             throw new IllegalArgumentException("Unable to bind netconf endpoint to address " + getBindingAddress(), e);
  81         }
  82     }
  83
  84     private static final class NetconfServerCloseable implements AutoCloseable {
  85         private final ChannelFuture localServer;
  86         private final SshProxyServer sshProxyServer;
  87
  88         public NetconfServerCloseable(final ChannelFuture localServer, final SshProxyServer sshProxyServer) {
  89             this.localServer = localServer;
  90             this.sshProxyServer = sshProxyServer;
  91         }
  92
  93         @Override
  94         public void close() throws Exception {
  95             sshProxyServer.close();
  96
  97             if(localServer.isDone()) {
  98                 localServer.channel().close();
  99             } else {
 100                 localServer.cancel(true);
 101             }
 102         }
 103     }
 104
 105
 106     private static final class UserAuthenticator implements PasswordAuthenticator {
 107
 108         private final String username;
 109         private final String password;
 110
 111         public UserAuthenticator(final String username, final String password) {
 112             this.username = username;
 113             this.password = password;
 114         }
 115
 116         @Override
 117         public boolean authenticate(final String username, final String password, final ServerSession session) {
 118             // FIXME use aaa stuff here instead
 119             return this.username.equals(username) && this.password.equals(password);
 120         }
 121     }
 122 }