*/
package org.opendaylight.controller.netconf.ssh.osgi;
-import static com.google.common.base.Preconditions.checkNotNull;
+import static com.google.common.base.Preconditions.checkState;
-import java.io.File;
-import java.io.FileInputStream;
+import com.google.common.base.Optional;
+import com.google.common.base.Strings;
+import io.netty.channel.local.LocalAddress;
+import io.netty.channel.nio.NioEventLoopGroup;
import java.io.IOException;
import java.net.InetSocketAddress;
-import org.apache.commons.io.FilenameUtils;
-import org.apache.commons.io.IOUtils;
-import org.opendaylight.controller.netconf.ssh.NetconfSSHServer;
-import org.opendaylight.controller.netconf.ssh.authentication.AuthProvider;
-import org.opendaylight.controller.netconf.ssh.authentication.PEMGenerator;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ThreadFactory;
+import org.apache.sshd.common.util.ThreadUtils;
+import org.apache.sshd.server.keyprovider.PEMGeneratorHostKeyProvider;
+import org.opendaylight.controller.netconf.ssh.SshProxyServer;
+import org.opendaylight.controller.netconf.ssh.SshProxyServerConfigurationBuilder;
import org.opendaylight.controller.netconf.util.osgi.NetconfConfigUtil;
-import org.opendaylight.controller.usermanager.IUserManager;
+import org.opendaylight.controller.netconf.util.osgi.NetconfConfigUtil.InfixProp;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
-import org.osgi.framework.ServiceReference;
-import org.osgi.util.tracker.ServiceTracker;
-import org.osgi.util.tracker.ServiceTrackerCustomizer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-/**
- * Activator for netconf SSH bundle which creates SSH bridge between netconf client and netconf server. Activator
- * starts SSH Server in its own thread. This thread is closed when activator calls stop() method. Server opens socket
- * and listens for client connections. Each client connection creation is handled in separate
- * {@link org.opendaylight.controller.netconf.ssh.threads.SocketThread} thread.
- * This thread creates two additional threads {@link org.opendaylight.controller.netconf.ssh.threads.IOThread}
- * forwarding data from/to client.IOThread closes servers session and server connection when it gets -1 on input stream.
- * {@link org.opendaylight.controller.netconf.ssh.threads.IOThread}'s run method waits for -1 on input stream to finish.
- * All threads are daemons.
- **/
-public class NetconfSSHActivator implements BundleActivator{
-
- private NetconfSSHServer server;
- private static final Logger logger = LoggerFactory.getLogger(NetconfSSHActivator.class);
- private IUserManager iUserManager;
- private BundleContext context = null;
-
- private ServiceTrackerCustomizer<IUserManager, IUserManager> customizer = new ServiceTrackerCustomizer<IUserManager, IUserManager>(){
- @Override
- public IUserManager addingService(final ServiceReference<IUserManager> reference) {
- logger.trace("Service {} added, let there be SSH bridge.", reference);
- iUserManager = context.getService(reference);
- try {
- onUserManagerFound(iUserManager);
- } catch (final Exception e) {
- logger.trace("Can't start SSH server due to {}",e);
- }
- return iUserManager;
- }
- @Override
- public void modifiedService(final ServiceReference<IUserManager> reference, final IUserManager service) {
- logger.trace("Replacing modified service {} in netconf SSH.", reference);
- server.addUserManagerService(service);
- }
- @Override
- public void removedService(final ServiceReference<IUserManager> reference, final IUserManager service) {
- logger.trace("Removing service {} from netconf SSH. " +
- "SSH won't authenticate users until IUserManager service will be started.", reference);
- removeUserManagerService();
- }
- };
+public class NetconfSSHActivator implements BundleActivator {
+ private static final Logger LOG = LoggerFactory.getLogger(NetconfSSHActivator.class);
+
+ private static final java.lang.String ALGORITHM = "RSA";
+ private static final int KEY_SIZE = 4096;
+ public static final int POOL_SIZE = 8;
+ private static final int DEFAULT_IDLE_TIMEOUT = Integer.MAX_VALUE;
+
+ private ScheduledExecutorService minaTimerExecutor;
+ private NioEventLoopGroup clientGroup;
+ private ExecutorService nioExecutor;
+ private AuthProviderTracker authProviderTracker;
+ private SshProxyServer server;
@Override
- public void start(final BundleContext context) {
- this.context = context;
- listenForManagerService();
+ public void start(final BundleContext bundleContext) throws IOException {
+ minaTimerExecutor = Executors.newScheduledThreadPool(POOL_SIZE, new ThreadFactory() {
+ @Override
+ public Thread newThread(final Runnable r) {
+ return new Thread(r, "netconf-ssh-server-mina-timers");
+ }
+ });
+ clientGroup = new NioEventLoopGroup();
+ nioExecutor = ThreadUtils.newFixedThreadPool("netconf-ssh-server-nio-group", POOL_SIZE);
+ server = startSSHServer(bundleContext);
}
@Override
- public void stop(BundleContext context) throws IOException {
- if (server != null){
- server.stop();
- logger.trace("Netconf SSH bridge is down ...");
+ public void stop(final BundleContext context) throws IOException {
+ if (server != null) {
+ server.close();
}
- }
- private void startSSHServer() throws IOException {
- checkNotNull(this.iUserManager, "No user manager service available.");
- logger.trace("Starting netconf SSH bridge.");
- final InetSocketAddress sshSocketAddress = NetconfConfigUtil.extractSSHNetconfAddress(context,
- NetconfConfigUtil.DEFAULT_NETCONF_SSH_ADDRESS);
- final InetSocketAddress tcpSocketAddress = NetconfConfigUtil.extractTCPNetconfClientAddress(context,
- NetconfConfigUtil.DEFAULT_NETCONF_TCP_ADDRESS);
-
- String path = FilenameUtils.separatorsToSystem(NetconfConfigUtil.getPrivateKeyPath(context));
-
- if (path.isEmpty()) {
- throw new IllegalStateException("Missing netconf.ssh.pk.path key in configuration file.");
+
+ if(authProviderTracker != null) {
+ authProviderTracker.stop();
}
- final File privateKeyFile = new File(path);
- final String privateKeyPEMString;
- if (privateKeyFile.exists() == false) {
- // generate & save to file
- try {
- privateKeyPEMString = PEMGenerator.generateTo(privateKeyFile);
- } catch (Exception e) {
- logger.error("Exception occurred while generating PEM string {}", e);
- throw new IllegalStateException("Error generating RSA key from file " + path);
- }
- } else {
- // read from file
- try (FileInputStream fis = new FileInputStream(path)) {
- privateKeyPEMString = IOUtils.toString(fis);
- } catch (final IOException e) {
- logger.error("Error reading RSA key from file '{}'", path);
- throw new IOException("Error reading RSA key from file " + path, e);
- }
+ if(nioExecutor!=null) {
+ nioExecutor.shutdownNow();
}
- final AuthProvider authProvider = new AuthProvider(iUserManager, privateKeyPEMString);
- this.server = NetconfSSHServer.start(sshSocketAddress.getPort(), tcpSocketAddress, authProvider);
- final Thread serverThread = new Thread(server, "netconf SSH server thread");
- serverThread.setDaemon(true);
- serverThread.start();
- logger.trace("Netconf SSH bridge up and running.");
- }
+ if(clientGroup != null) {
+ clientGroup.shutdownGracefully();
+ }
- private void onUserManagerFound(final IUserManager userManager) throws Exception{
- if (server!=null && server.isUp()){
- server.addUserManagerService(userManager);
- } else {
- startSSHServer();
+ if(minaTimerExecutor != null) {
+ minaTimerExecutor.shutdownNow();
}
}
- private void removeUserManagerService(){
- this.server.removeUserManagerService();
- }
- private void listenForManagerService(){
- final ServiceTracker<IUserManager, IUserManager> listenerTracker = new ServiceTracker<>(context, IUserManager.class,customizer);
- listenerTracker.open();
+
+ private SshProxyServer startSSHServer(final BundleContext bundleContext) throws IOException {
+ final Optional<InetSocketAddress> maybeSshSocketAddress = NetconfConfigUtil.extractNetconfServerAddress(bundleContext, InfixProp.ssh);
+
+ if (!maybeSshSocketAddress.isPresent()) {
+ LOG.trace("SSH bridge not configured");
+ return null;
+ }
+
+ final InetSocketAddress sshSocketAddress = maybeSshSocketAddress.get();
+ LOG.trace("Starting netconf SSH bridge at {}", sshSocketAddress);
+
+ final LocalAddress localAddress = NetconfConfigUtil.getNetconfLocalAddress();
+
+ authProviderTracker = new AuthProviderTracker(bundleContext);
+
+ final String path = NetconfConfigUtil.getPrivateKeyPath(bundleContext);
+
+ checkState(!Strings.isNullOrEmpty(path), "Path to ssh private key is blank. Reconfigure %s",
+ NetconfConfigUtil.getPrivateKeyKey());
+
+ final SshProxyServer sshProxyServer = new SshProxyServer(minaTimerExecutor, clientGroup, nioExecutor);
+ sshProxyServer.bind(
+ new SshProxyServerConfigurationBuilder()
+ .setBindingAddress(sshSocketAddress)
+ .setLocalAddress(localAddress)
+ .setAuthenticator(authProviderTracker)
+ .setKeyPairProvider(new PEMGeneratorHostKeyProvider(path, ALGORITHM, KEY_SIZE))
+ .setIdleTimeout(DEFAULT_IDLE_TIMEOUT)
+ .createSshProxyServerConfiguration());
+ return sshProxyServer;
}
+
}
Code Review / controller.git / blobdiff