Convert SshDaemon to unix format

Change-Id: Icb415c2bc62321ddd0ae08445d97f1f8102adee8

1 files changed, 335 insertions, 331 deletions

diff --git a/src/main/java/com/gitblit/transport/ssh/SshDaemon.java b/src/main/java/com/gitblit/transport/ssh/SshDaemon.java
index 3c3ef3f2..b3471a29 100644
--- a/src/main/java/com/gitblit/transport/ssh/SshDaemon.java
+++ b/src/main/java/com/gitblit/transport/ssh/SshDaemon.java
@@ -1,331 +1,335 @@
-/*

- * Copyright 2014 gitblit.com.

- *

- * Licensed 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 com.gitblit.transport.ssh;

-

-import java.io.File;

-import java.io.IOException;

-import java.net.InetSocketAddress;

-import java.net.SocketAddress;

-import java.security.InvalidKeyException;

-import java.text.MessageFormat;

-import java.util.Arrays;

-import java.util.Iterator;

-import java.util.LinkedList;

-import java.util.List;

-import java.util.concurrent.atomic.AtomicBoolean;

-

-import javax.inject.Inject;

-

-import org.apache.mina.core.future.IoFuture;

-import org.apache.mina.core.future.IoFutureListener;

-import org.apache.mina.core.session.IoSession;

-import org.apache.mina.transport.socket.SocketSessionConfig;

-import org.apache.sshd.SshServer;

-import org.apache.sshd.common.Channel;

-import org.apache.sshd.common.Cipher;

-import org.apache.sshd.common.Compression;

-import org.apache.sshd.common.KeyExchange;

-import org.apache.sshd.common.KeyPairProvider;

-import org.apache.sshd.common.Mac;

-import org.apache.sshd.common.NamedFactory;

-import org.apache.sshd.common.Session;

-import org.apache.sshd.common.Signature;

-import org.apache.sshd.common.cipher.AES128CBC;

-import org.apache.sshd.common.cipher.AES192CBC;

-import org.apache.sshd.common.cipher.AES256CBC;

-import org.apache.sshd.common.cipher.BlowfishCBC;

-import org.apache.sshd.common.cipher.TripleDESCBC;

-import org.apache.sshd.common.compression.CompressionNone;

-import org.apache.sshd.common.mac.HMACMD5;

-import org.apache.sshd.common.mac.HMACMD596;

-import org.apache.sshd.common.mac.HMACSHA1;

-import org.apache.sshd.common.mac.HMACSHA196;

-import org.apache.sshd.common.random.BouncyCastleRandom;

-import org.apache.sshd.common.random.SingletonRandomFactory;

-import org.apache.sshd.common.signature.SignatureDSA;

-import org.apache.sshd.common.signature.SignatureRSA;

-import org.apache.sshd.common.util.SecurityUtils;

-import org.apache.sshd.server.CommandFactory;

-import org.apache.sshd.server.FileSystemFactory;

-import org.apache.sshd.server.FileSystemView;

-import org.apache.sshd.server.ForwardingFilter;

-import org.apache.sshd.server.PublickeyAuthenticator;

-import org.apache.sshd.server.SshFile;

-import org.apache.sshd.server.UserAuth;

-import org.apache.sshd.server.auth.UserAuthPublicKey;

-import org.apache.sshd.server.channel.ChannelDirectTcpip;

-import org.apache.sshd.server.channel.ChannelSession;

-import org.apache.sshd.server.kex.DHG1;

-import org.apache.sshd.server.kex.DHG14;

-import org.apache.sshd.server.keyprovider.PEMGeneratorHostKeyProvider;

-import org.apache.sshd.server.session.ServerSession;

-import org.apache.sshd.server.session.SessionFactory;

-import org.eclipse.jgit.internal.JGitText;

-import org.slf4j.Logger;

-import org.slf4j.LoggerFactory;

-

-import com.gitblit.IStoredSettings;

-import com.gitblit.Keys;

-import com.gitblit.manager.IGitblit;

-import com.gitblit.utils.IdGenerator;

-import com.gitblit.utils.StringUtils;

-

-/**

- * Manager for the ssh transport. Roughly analogous to the

- * {@link com.gitblit.git.GitDaemon} class.

- *

- * @author Eric Myhre

- *

- */

-public class SshDaemon extends SshServer {

-

-	private final Logger log = LoggerFactory.getLogger(SshDaemon.class);

-

-	/**

-	 * 22: IANA assigned port number for ssh. Note that this is a distinct concept

-	 * from gitblit's default conf for ssh port -- this "default" is what the git

-	 * protocol itself defaults to if it sees and ssh url without a port.

-	 */

-	public static final int DEFAULT_PORT = 22;

-

-	private static final String HOST_KEY_STORE = "sshKeyStore.pem";

-

-	private InetSocketAddress myAddress;

-

-	private AtomicBoolean run;

-

-	@SuppressWarnings("unused")

-    private IGitblit gitblit;

-

-	/**

-	 * Construct the Gitblit SSH daemon.

-	 *

-	 * @param gitblit

-	 */

-	@Inject

-	SshDaemon(IGitblit gitblit, IdGenerator idGenerator, SshCommandFactory factory) {

-	    this.gitblit = gitblit;

-		IStoredSettings settings = gitblit.getSettings();

-		int port = settings.getInteger(Keys.git.sshPort, 0);

-		String bindInterface = settings.getString(Keys.git.sshBindInterface, "localhost");

-

-		if (StringUtils.isEmpty(bindInterface)) {

-			myAddress = new InetSocketAddress(port);

-		} else {

-			myAddress = new InetSocketAddress(bindInterface, port);

-		}

-

-		setPort(myAddress.getPort());

-		setHost(myAddress.getHostName());

-		setup();

-		setKeyPairProvider(new PEMGeneratorHostKeyProvider(

-		    new File(gitblit.getBaseFolder(), HOST_KEY_STORE).getPath()));

-		setPublickeyAuthenticator(new SshKeyAuthenticator(gitblit));

-

-		run = new AtomicBoolean(false);

-		setCommandFactory(factory);

-		setSessionFactory(newSessionFactory(idGenerator));

-	}

-

-	SessionFactory newSessionFactory(final IdGenerator idGenerator) {

-	  return new SessionFactory() {

-        @Override

-        protected ServerSession createSession(final IoSession io) throws Exception {

-            log.info("connection accepted on " + io);

-            if (io.getConfig() instanceof SocketSessionConfig) {

-                final SocketSessionConfig c = (SocketSessionConfig) io.getConfig();

-                c.setKeepAlive(true);

-            }

-            ServerSession s = (ServerSession) super.createSession(io);

-            SocketAddress peer = io.getRemoteAddress();

-            SshSession session = new SshSession(idGenerator.next(), peer);

-            s.setAttribute(SshSession.KEY, session);

-            io.getCloseFuture().addListener(new IoFutureListener<IoFuture>() {

-                @Override

-                public void operationComplete(IoFuture future) {

-                    log.info("connection closed on " + io);

-                }

-            });

-            return s;

-          }

-        };

-	}

-

-	public int getPort() {

-		return myAddress.getPort();

-	}

-

-	public String formatUrl(String gituser, String servername, String repository) {

-		if (getPort() == DEFAULT_PORT) {

-			// standard port

-			return MessageFormat.format("{0}@{1}/{2}", gituser, servername, repository);

-		} else {

-			// non-standard port

-			return MessageFormat.format("ssh://{0}@{1}:{2,number,0}/{3}", gituser, servername, getPort(), repository);

-		}

-	}

-

-	/**

-	 * Start this daemon on a background thread.

-	 *

-	 * @throws IOException

-	 *             the server socket could not be opened.

-	 * @throws IllegalStateException

-	 *             the daemon is already running.

-	 */

-	public synchronized void start() throws IOException {

-		if (run.get()) {

-			throw new IllegalStateException(JGitText.get().daemonAlreadyRunning);

-		}

-

-		super.start();

-		run.set(true);

-

-		log.info(MessageFormat.format("SSH Daemon is listening on {0}:{1,number,0}",

-				myAddress.getAddress().getHostAddress(), myAddress.getPort()));

-	}

-

-	/** @return true if this daemon is receiving connections. */

-	public boolean isRunning() {

-		return run.get();

-	}

-

-	/** Stop this daemon. */

-	public synchronized void stop() {

-		if (run.get()) {

-			log.info("SSH Daemon stopping...");

-			run.set(false);

-

-			try {

-				super.stop();

-			} catch (InterruptedException e) {

-				log.error("SSH Daemon stop interrupted", e);

-			}

-		}

-	}

-

-	   /**

-     * Performs most of default configuration (setup random sources, setup ciphers,

-     * etc; also, support for forwarding and filesystem is explicitly disallowed).

-     *

-     * {@link #setKeyPairProvider(KeyPairProvider)} and

-     * {@link #setPublickeyAuthenticator(PublickeyAuthenticator)} are left for you.

-     * And applying {@link #setCommandFactory(CommandFactory)} is probably wise if you

-     * want something to actually happen when users do successfully authenticate.

-     */

-    @SuppressWarnings("unchecked")

-    public void setup() {

-        if (!SecurityUtils.isBouncyCastleRegistered())

-            throw new RuntimeException("BC crypto not available");

-

-        setKeyExchangeFactories(Arrays.<NamedFactory<KeyExchange>>asList(

-                new DHG14.Factory(),

-                new DHG1.Factory())

-        );

-

-        setRandomFactory(new SingletonRandomFactory(new BouncyCastleRandom.Factory()));

-

-        setupCiphers();

-

-        setCompressionFactories(Arrays.<NamedFactory<Compression>>asList(

-                new CompressionNone.Factory())

-        );

-

-        setMacFactories(Arrays.<NamedFactory<Mac>>asList(

-                new HMACMD5.Factory(),

-                new HMACSHA1.Factory(),

-                new HMACMD596.Factory(),

-                new HMACSHA196.Factory())

-        );

-

-        setChannelFactories(Arrays.<NamedFactory<Channel>>asList(

-                new ChannelSession.Factory(),

-                new ChannelDirectTcpip.Factory())

-        );

-

-        setSignatureFactories(Arrays.<NamedFactory<Signature>>asList(

-                new SignatureDSA.Factory(),

-                new SignatureRSA.Factory())

-        );

-

-        setFileSystemFactory(new FileSystemFactory() {

-            @Override

-            public FileSystemView createFileSystemView(Session session) throws IOException {

-                return new FileSystemView() {

-                    @Override

-                    public SshFile getFile(SshFile baseDir, String file) {

-                        return null;

-                    }

-

-                    @Override

-                    public SshFile getFile(String file) {

-                        return null;

-                    }

-                };

-            }

-        });

-

-        setForwardingFilter(new ForwardingFilter() {

-            @Override

-            public boolean canForwardAgent(ServerSession session) {

-                return false;

-            }

-

-            @Override

-            public boolean canForwardX11(ServerSession session) {

-                return false;

-            }

-

-            @Override

-            public boolean canConnect(InetSocketAddress address, ServerSession session) {

-                return false;

-            }

-

-            @Override

-            public boolean canListen(InetSocketAddress address, ServerSession session) {

-                return false;

-            }

-        });

-

-        setUserAuthFactories(Arrays.<NamedFactory<UserAuth>>asList(

-                new UserAuthPublicKey.Factory())

-        );

-    }

-

-    protected void setupCiphers() {

-        List<NamedFactory<Cipher>> avail = new LinkedList<NamedFactory<Cipher>>();

-        avail.add(new AES128CBC.Factory());

-        avail.add(new TripleDESCBC.Factory());

-        avail.add(new BlowfishCBC.Factory());

-        avail.add(new AES192CBC.Factory());

-        avail.add(new AES256CBC.Factory());

-

-        for (Iterator<NamedFactory<Cipher>> i = avail.iterator(); i.hasNext();) {

-            final NamedFactory<Cipher> f = i.next();

-            try {

-                final Cipher c = f.create();

-                final byte[] key = new byte[c.getBlockSize()];

-                final byte[] iv = new byte[c.getIVSize()];

-                c.init(Cipher.Mode.Encrypt, key, iv);

-            } catch (InvalidKeyException e) {

-                i.remove();

-            } catch (Exception e) {

-                i.remove();

-            }

-        }

-        setCipherFactories(avail);

-    }

-}

+/*
+ * Copyright 2014 gitblit.com.
+ *
+ * Licensed 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 com.gitblit.transport.ssh;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.SocketAddress;
+import java.security.InvalidKeyException;
+import java.text.MessageFormat;
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import javax.inject.Inject;
+
+import org.apache.mina.core.future.IoFuture;
+import org.apache.mina.core.future.IoFutureListener;
+import org.apache.mina.core.session.IoSession;
+import org.apache.mina.transport.socket.SocketSessionConfig;
+import org.apache.sshd.SshServer;
+import org.apache.sshd.common.Channel;
+import org.apache.sshd.common.Cipher;
+import org.apache.sshd.common.Compression;
+import org.apache.sshd.common.KeyExchange;
+import org.apache.sshd.common.KeyPairProvider;
+import org.apache.sshd.common.Mac;
+import org.apache.sshd.common.NamedFactory;
+import org.apache.sshd.common.Session;
+import org.apache.sshd.common.Signature;
+import org.apache.sshd.common.cipher.AES128CBC;
+import org.apache.sshd.common.cipher.AES192CBC;
+import org.apache.sshd.common.cipher.AES256CBC;
+import org.apache.sshd.common.cipher.BlowfishCBC;
+import org.apache.sshd.common.cipher.TripleDESCBC;
+import org.apache.sshd.common.compression.CompressionNone;
+import org.apache.sshd.common.mac.HMACMD5;
+import org.apache.sshd.common.mac.HMACMD596;
+import org.apache.sshd.common.mac.HMACSHA1;
+import org.apache.sshd.common.mac.HMACSHA196;
+import org.apache.sshd.common.random.BouncyCastleRandom;
+import org.apache.sshd.common.random.SingletonRandomFactory;
+import org.apache.sshd.common.signature.SignatureDSA;
+import org.apache.sshd.common.signature.SignatureRSA;
+import org.apache.sshd.common.util.SecurityUtils;
+import org.apache.sshd.server.CommandFactory;
+import org.apache.sshd.server.FileSystemFactory;
+import org.apache.sshd.server.FileSystemView;
+import org.apache.sshd.server.ForwardingFilter;
+import org.apache.sshd.server.PublickeyAuthenticator;
+import org.apache.sshd.server.SshFile;
+import org.apache.sshd.server.UserAuth;
+import org.apache.sshd.server.auth.UserAuthPublicKey;
+import org.apache.sshd.server.channel.ChannelDirectTcpip;
+import org.apache.sshd.server.channel.ChannelSession;
+import org.apache.sshd.server.kex.DHG1;
+import org.apache.sshd.server.kex.DHG14;
+import org.apache.sshd.server.keyprovider.PEMGeneratorHostKeyProvider;
+import org.apache.sshd.server.session.ServerSession;
+import org.apache.sshd.server.session.SessionFactory;
+import org.eclipse.jgit.internal.JGitText;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.gitblit.IStoredSettings;
+import com.gitblit.Keys;
+import com.gitblit.manager.IGitblit;
+import com.gitblit.utils.IdGenerator;
+import com.gitblit.utils.StringUtils;
+
+/**
+ * Manager for the ssh transport. Roughly analogous to the
+ * {@link com.gitblit.git.GitDaemon} class.
+ * 
+ * @author Eric Myhre
+ * 
+ */
+public class SshDaemon extends SshServer {
+
+	private final Logger log = LoggerFactory.getLogger(SshDaemon.class);
+
+	/**
+	 * 22: IANA assigned port number for ssh. Note that this is a distinct
+	 * concept from gitblit's default conf for ssh port -- this "default" is
+	 * what the git protocol itself defaults to if it sees and ssh url without a
+	 * port.
+	 */
+	public static final int DEFAULT_PORT = 22;
+
+	private static final String HOST_KEY_STORE = "sshKeyStore.pem";
+
+	private InetSocketAddress myAddress;
+
+	private AtomicBoolean run;
+
+	@SuppressWarnings("unused")
+	private IGitblit gitblit;
+
+	/**
+	 * Construct the Gitblit SSH daemon.
+	 * 
+	 * @param gitblit
+	 */
+	@Inject
+	SshDaemon(IGitblit gitblit, IdGenerator idGenerator,
+			SshCommandFactory factory) {
+		this.gitblit = gitblit;
+		IStoredSettings settings = gitblit.getSettings();
+		int port = settings.getInteger(Keys.git.sshPort, 0);
+		String bindInterface = settings.getString(Keys.git.sshBindInterface,
+				"localhost");
+
+		if (StringUtils.isEmpty(bindInterface)) {
+			myAddress = new InetSocketAddress(port);
+		} else {
+			myAddress = new InetSocketAddress(bindInterface, port);
+		}
+
+		setPort(myAddress.getPort());
+		setHost(myAddress.getHostName());
+		setup();
+		setKeyPairProvider(new PEMGeneratorHostKeyProvider(new File(
+				gitblit.getBaseFolder(), HOST_KEY_STORE).getPath()));
+		setPublickeyAuthenticator(new SshKeyAuthenticator(gitblit));
+
+		run = new AtomicBoolean(false);
+		setCommandFactory(factory);
+		setSessionFactory(newSessionFactory(idGenerator));
+	}
+
+	SessionFactory newSessionFactory(final IdGenerator idGenerator) {
+		return new SessionFactory() {
+			@Override
+			protected ServerSession createSession(final IoSession io)
+					throws Exception {
+				log.info("connection accepted on " + io);
+				if (io.getConfig() instanceof SocketSessionConfig) {
+					final SocketSessionConfig c = (SocketSessionConfig) io
+							.getConfig();
+					c.setKeepAlive(true);
+				}
+				ServerSession s = (ServerSession) super.createSession(io);
+				SocketAddress peer = io.getRemoteAddress();
+				SshSession session = new SshSession(idGenerator.next(), peer);
+				s.setAttribute(SshSession.KEY, session);
+				io.getCloseFuture().addListener(
+						new IoFutureListener<IoFuture>() {
+							@Override
+							public void operationComplete(IoFuture future) {
+								log.info("connection closed on " + io);
+							}
+						});
+				return s;
+			}
+		};
+	}
+
+	public int getPort() {
+		return myAddress.getPort();
+	}
+
+	public String formatUrl(String gituser, String servername, String repository) {
+		if (getPort() == DEFAULT_PORT) {
+			// standard port
+			return MessageFormat.format("{0}@{1}/{2}", gituser, servername,
+					repository);
+		} else {
+			// non-standard port
+			return MessageFormat.format("ssh://{0}@{1}:{2,number,0}/{3}",
+					gituser, servername, getPort(), repository);
+		}
+	}
+
+	/**
+	 * Start this daemon on a background thread.
+	 * 
+	 * @throws IOException
+	 *             the server socket could not be opened.
+	 * @throws IllegalStateException
+	 *             the daemon is already running.
+	 */
+	public synchronized void start() throws IOException {
+		if (run.get()) {
+			throw new IllegalStateException(JGitText.get().daemonAlreadyRunning);
+		}
+
+		super.start();
+		run.set(true);
+
+		log.info(MessageFormat.format(
+				"SSH Daemon is listening on {0}:{1,number,0}", myAddress
+						.getAddress().getHostAddress(), myAddress.getPort()));
+	}
+
+	/** @return true if this daemon is receiving connections. */
+	public boolean isRunning() {
+		return run.get();
+	}
+
+	/** Stop this daemon. */
+	public synchronized void stop() {
+		if (run.get()) {
+			log.info("SSH Daemon stopping...");
+			run.set(false);
+
+			try {
+				super.stop();
+			} catch (InterruptedException e) {
+				log.error("SSH Daemon stop interrupted", e);
+			}
+		}
+	}
+
+	/**
+	 * Performs most of default configuration (setup random sources, setup
+	 * ciphers, etc; also, support for forwarding and filesystem is explicitly
+	 * disallowed).
+	 * 
+	 * {@link #setKeyPairProvider(KeyPairProvider)} and
+	 * {@link #setPublickeyAuthenticator(PublickeyAuthenticator)} are left for
+	 * you. And applying {@link #setCommandFactory(CommandFactory)} is probably
+	 * wise if you want something to actually happen when users do successfully
+	 * authenticate.
+	 */
+	@SuppressWarnings("unchecked")
+	public void setup() {
+		if (!SecurityUtils.isBouncyCastleRegistered())
+			throw new RuntimeException("BC crypto not available");
+
+		setKeyExchangeFactories(Arrays.<NamedFactory<KeyExchange>> asList(
+				new DHG14.Factory(), new DHG1.Factory()));
+
+		setRandomFactory(new SingletonRandomFactory(
+				new BouncyCastleRandom.Factory()));
+
+		setupCiphers();
+
+		setCompressionFactories(Arrays
+				.<NamedFactory<Compression>> asList(new CompressionNone.Factory()));
+
+		setMacFactories(Arrays.<NamedFactory<Mac>> asList(
+				new HMACMD5.Factory(), new HMACSHA1.Factory(),
+				new HMACMD596.Factory(), new HMACSHA196.Factory()));
+
+		setChannelFactories(Arrays.<NamedFactory<Channel>> asList(
+				new ChannelSession.Factory(), new ChannelDirectTcpip.Factory()));
+
+		setSignatureFactories(Arrays.<NamedFactory<Signature>> asList(
+				new SignatureDSA.Factory(), new SignatureRSA.Factory()));
+
+		setFileSystemFactory(new FileSystemFactory() {
+			@Override
+			public FileSystemView createFileSystemView(Session session)
+					throws IOException {
+				return new FileSystemView() {
+					@Override
+					public SshFile getFile(SshFile baseDir, String file) {
+						return null;
+					}
+
+					@Override
+					public SshFile getFile(String file) {
+						return null;
+					}
+				};
+			}
+		});
+
+		setForwardingFilter(new ForwardingFilter() {
+			@Override
+			public boolean canForwardAgent(ServerSession session) {
+				return false;
+			}
+
+			@Override
+			public boolean canForwardX11(ServerSession session) {
+				return false;
+			}
+
+			@Override
+			public boolean canConnect(InetSocketAddress address,
+					ServerSession session) {
+				return false;
+			}
+
+			@Override
+			public boolean canListen(InetSocketAddress address,
+					ServerSession session) {
+				return false;
+			}
+		});
+
+		setUserAuthFactories(Arrays
+				.<NamedFactory<UserAuth>> asList(new UserAuthPublicKey.Factory()));
+	}
+
+	protected void setupCiphers() {
+		List<NamedFactory<Cipher>> avail = new LinkedList<NamedFactory<Cipher>>();
+		avail.add(new AES128CBC.Factory());
+		avail.add(new TripleDESCBC.Factory());
+		avail.add(new BlowfishCBC.Factory());
+		avail.add(new AES192CBC.Factory());
+		avail.add(new AES256CBC.Factory());
+
+		for (Iterator<NamedFactory<Cipher>> i = avail.iterator(); i.hasNext();) {
+			final NamedFactory<Cipher> f = i.next();
+			try {
+				final Cipher c = f.create();
+				final byte[] key = new byte[c.getBlockSize()];
+				final byte[] iv = new byte[c.getIVSize()];
+				c.init(Cipher.Mode.Encrypt, key, iv);
+			} catch (InvalidKeyException e) {
+				i.remove();
+			} catch (Exception e) {
+				i.remove();
+			}
+		}
+		setCipherFactories(avail);
+	}
+}