Enable SSL for mgmt servers and agents

The port remains 8250.

The keystore saved at /etc/cloud/management/cloud.keystore. We also include one
fail-safe keystore/certificate for fallback if we are unable to generate
certificate and keystore. If we use fail-safe keystore, a warning and calltrace would be show.

Notice you need to upgrade agent, as well as systemVM's images.

agent/src/com/cloud/agent/Agent.java

@@ -366,28 +366,30 @@ public class Agent implements HandlerFactory, IAgentControl {
         
         _resource.disconnected();
 
-        while (true) {
+        int inProgress = 0;
+        do {
             _shell.getBackoffAlgorithm().waitBeforeRetry();
             
             s_logger.info("Lost connection to the server.  Reconnecting....");
 
-            int inProgress = 0;
+            inProgress = _inProgress.get();
-            if ((inProgress = _inProgress.get()) > 0) {
+            if (inProgress > 0) {
             	s_logger.info("Cannot connect because we still have " + inProgress + " commands in progress.");
-            	continue;
             }
+        } while (inProgress > 0);
 
-            try {
+        _connection.stop();
-                final SocketChannel sch = SocketChannel.open();
+        _connection = new NioClient(
-                sch.configureBlocking(false);
+        		"Agent",
-                sch.connect(link.getSocketAddress());
+        		_shell.getHost(),
-
+        		_shell.getPort(),
-                link.connect(sch);
+        		_shell.getWorkers(),
-                return;
+        		this);
-            } catch(final IOException e) {
+        do {
-                s_logger.error("Unable to establish connection with the server", e);
+        	s_logger.info("Reconnecting...");
-            }
+        	_connection.start();
-        }
+            _shell.getBackoffAlgorithm().waitBeforeRetry();
+        } while (!_connection.isStartup());
     }
     
     public void processStartupAnswer(Answer answer, Response response, Link link) {

build/build-cloud.xml

@@ -174,7 +174,13 @@
     <path refid="deps.classpath" />
   </path>
   <target name="compile-utils" depends="-init" description="Compile the utilities jar that is shared.">
-    <compile-java jar.name="${utils.jar}" top.dir="${utils.dir}" classpath="utils.classpath" />
+    <compile-java jar.name="${utils.jar}" top.dir="${utils.dir}" classpath="utils.classpath" >
+      <include-files>
+        <fileset dir="${utils.dir}/certs">
+          <include name="*.keystore" />
+        </fileset>
+      </include-files>
+    </compile-java>
   </target>
 
   <property name="api.dir" location="${base.dir}/api" />

server/src/com/cloud/server/ConfigurationServerImpl.java

@@ -25,9 +25,13 @@ import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.io.Writer;
 import java.math.BigInteger;
+import java.net.InetAddress;
 import java.net.NetworkInterface;
 import java.net.SocketException;
+import java.net.UnknownHostException;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.sql.PreparedStatement;
@@ -36,6 +40,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Properties;
 import java.util.UUID;
+import java.util.regex.Pattern;
 
 import javax.crypto.KeyGenerator;
 import javax.crypto.SecretKey;
@@ -82,6 +87,7 @@ import com.cloud.utils.PropertiesUtil;
 import com.cloud.utils.component.ComponentLocator;
 import com.cloud.utils.db.DB;
 import com.cloud.utils.db.Transaction;
+import com.cloud.utils.encoding.Base64.OutputStream;
 import com.cloud.utils.exception.CloudRuntimeException;
 import com.cloud.utils.net.NetUtils;
 import com.cloud.utils.script.Script;
@@ -222,6 +228,9 @@ public class ConfigurationServerImpl implements ConfigurationServer {
  	        }
 		}
 		
+		// keystore for SSL/TLS connection
+		updateSSLKeystore();
+
 		// store the public and private keys in the database
 		updateKeyPairs();
 
@@ -369,6 +378,131 @@ public class ConfigurationServerImpl implements ConfigurationServer {
 		}
 	}
 
+    private String getBase64Keystore(String keystorePath) throws IOException {
+        byte[] storeBytes = new byte[4094];
+        int len = 0;
+        try {
+            len = new FileInputStream(keystorePath).read(storeBytes);
+        } catch (EOFException e) {
+        } catch (Exception e) {
+            throw new IOException("Cannot read the generated keystore file");
+        }
+        if (len > 3000) { // Base64 codec would enlarge data by 1/3, and we have 4094 bytes in database entry at most
+            throw new IOException("KeyStore is too big for database! Length " + len);
+        }
+
+        byte[] encodeBytes = new byte[len];
+        System.arraycopy(storeBytes, 0, encodeBytes, 0, len);
+
+        return new String(Base64.encodeBase64(encodeBytes));
+    }
+
+    @DB
+    private void createSSLKeystoreDBEntry(String encodedKeystore) throws IOException {
+        String insertSQL = "INSERT INTO `cloud`.`configuration` (category, instance, component, name, value, description) " +
+            "VALUES ('Hidden','DEFAULT', 'management-server','ssl.keystore', '" + encodedKeystore +"','SSL Keystore for the management servers')";
+        Transaction txn = Transaction.currentTxn();
+        try {
+            PreparedStatement stmt = txn.prepareAutoCloseStatement(insertSQL);
+            stmt.executeUpdate();
+            if (s_logger.isDebugEnabled()) {
+                s_logger.debug("SSL Keystore inserted into database");
+            }
+        } catch (SQLException ex) {
+            s_logger.error("SQL of the SSL Keystore failed", ex);
+            throw new IOException("SQL of the SSL Keystore failed");
+        }
+    }
+
+    private void generateDefaultKeystore(String keystorePath) throws IOException {
+        String cn = "Cloudstack User";
+        String ou;
+
+        try {
+            ou = InetAddress.getLocalHost().getCanonicalHostName();
+            String[] group = ou.split("\\."); 
+
+            // Simple check to see if we got IP Address...
+            boolean isIPAddress =  Pattern.matches("[0-9]$", group[group.length - 1]);
+            if (isIPAddress) {
+                ou = "cloud.com";
+            } else {
+                ou = group[group.length - 1];
+                for (int i = group.length - 2; i >= 0 && i >= group.length - 3; i--)
+                    ou = group[i] + "." + ou;
+            }
+        } catch (UnknownHostException ex) {
+            s_logger.info("Fail to get user's domain name. Would use cloud.com. ", ex);
+            ou = "cloud.com";
+        }
+
+        String o = ou;
+        String c = "Unknown";
+        String dname = "cn=" + cn + ", ou=" + ou +", o=" + o + ", c=" + c;
+        Script script = new Script(true, "keytool", 5000, null);
+        script.add("-genkey");
+        script.add("-keystore", keystorePath);
+        script.add("-storepass", "vmops.com");
+        script.add("-keypass", "vmops.com");
+        script.add("-validity", "3650");
+        script.add("-dname", dname);
+        String result = script.execute();
+        if (result != null) {
+        	throw new IOException("Fail to generate certificate!");
+        }
+    }
+
+    protected void updateSSLKeystore() {
+        if (s_logger.isInfoEnabled()) {
+            s_logger.info("Processing updateSSLKeyStore");
+        }
+
+        String dbString = _configDao.getValue("ssl.keystore");
+        String keystorePath = "/etc/cloud/management/cloud.keystore";
+        File keystoreFile = new File(keystorePath);
+        boolean dbExisted = (dbString != null && !dbString.isEmpty());
+
+        try {
+            if (!dbExisted) {
+                if  (!keystoreFile.exists()) {
+                    generateDefaultKeystore(keystorePath);
+                    s_logger.info("Generated SSL keystore.");
+                }
+                String base64Keystore = getBase64Keystore(keystorePath);
+                createSSLKeystoreDBEntry(base64Keystore);
+                s_logger.info("Stored SSL keystore to database.");
+            } else if (keystoreFile.exists()) { // and dbExisted
+                // Check if they are the same one, otherwise override with local keystore
+                String base64Keystore = getBase64Keystore(keystorePath);
+                if (base64Keystore.compareTo(dbString) != 0) {
+                    _configDao.update("ssl.keystore", base64Keystore);
+                    s_logger.info("Updated database keystore with local one.");
+                }
+            } else { // !keystoreFile.exists() and dbExisted
+                // Export keystore to local file
+                byte[] storeBytes = Base64.decodeBase64(dbString);
+                try {
+                    String tmpKeystorePath = "/tmp/tmpkey";
+                    FileOutputStream fo = new FileOutputStream(tmpKeystorePath);
+                    fo.write(storeBytes);
+                    fo.close();
+                    Script script = new Script(true, "cp", 5000, null);
+                    script.add(tmpKeystorePath);
+                    script.add(keystorePath);
+                    String result = script.execute();
+                    if (result != null) {
+                    	throw new IOException();
+                    }
+                } catch (Exception e) {
+                    throw new IOException("Fail to create keystore file!", e);
+                }
+                s_logger.info("Stored database keystore to local.");
+            }
+        } catch (Exception ex) {
+            s_logger.warn("Would use fail-safe keystore to continue.", ex);
+        }
+    }
+
     @DB
     protected void updateKeyPairs() {
         // Grab the SSH key pair and insert it into the database, if it is not present

utils/src/com/cloud/utils/nio/Link.java

@@ -28,6 +28,11 @@ import java.nio.channels.SocketChannel;
 import java.nio.channels.WritableByteChannel;
 import java.util.concurrent.ConcurrentLinkedQueue;
 
+import javax.net.ssl.SSLEngine;
+import javax.net.ssl.SSLEngineResult;
+import javax.net.ssl.SSLSession;
+import javax.net.ssl.SSLEngineResult.HandshakeStatus;
+
 import org.apache.log4j.Logger;
 
 /**
@@ -44,6 +49,8 @@ public class Link {
     private Object _attach;
     private boolean _readSize;
     
+    private SSLEngine _sslEngine;
+
     public Link(InetSocketAddress addr, NioConnection connection) {
         _addr = addr;
         _connection = connection;
@@ -70,6 +77,10 @@ public class Link {
         _key = key;
     }
     
+    public void setSSLEngine(SSLEngine sslEngine) {
+        _sslEngine = sslEngine;
+    }
+
     /**
      * Static methods for reading from a channel in case
      * you need to add a client that doesn't require nio.
@@ -190,8 +201,24 @@ public class Link {
         }
         
         _readBuffer.flip();
-        byte[] result = new byte[_readBuffer.limit()];
+
-        _readBuffer.get(result);
+        ByteBuffer appBuf;
+
+        SSLSession sslSession = _sslEngine.getSession();
+        SSLEngineResult engResult;
+
+        //TODO may need to adjust the buffer size
+        appBuf = ByteBuffer.allocate(sslSession.getApplicationBufferSize() + 40);
+        engResult = _sslEngine.unwrap(_readBuffer, appBuf);
+        if (engResult.getHandshakeStatus() != HandshakeStatus.FINISHED &&
+                engResult.getHandshakeStatus() != HandshakeStatus.NOT_HANDSHAKING &&
+                engResult.getStatus() != SSLEngineResult.Status.OK) {
+            throw new IOException("SSL: SSLEngine return bad result! " + engResult);
+        }
+
+        byte[] result = new byte[appBuf.position()];
+        appBuf.flip();
+        appBuf.get(result);
         _readBuffer.clear();
         _readSize = true;
         
@@ -258,29 +285,46 @@ public class Link {
                 return true;
             }
 
-            data[0].mark();
+            ByteBuffer pkgBuf;
-            int remaining = data[0].getInt() + 4;
+            SSLSession sslSession = _sslEngine.getSession();
-            data[0].reset();
+            SSLEngineResult engResult;
 
-            if (remaining > 65535) {
+            ByteBuffer headBuf = ByteBuffer.allocate(4);
-            	throw new IOException("Fail to send a too big packet! Size: " + remaining);
+            ByteBuffer[] raw_data = new ByteBuffer[data.length - 1];
+            System.arraycopy(data, 1, raw_data, 0, data.length - 1);
+
+            pkgBuf = ByteBuffer.allocate(sslSession.getPacketBufferSize() + 40);
+            engResult = _sslEngine.wrap(raw_data, pkgBuf);
+            if (engResult.getHandshakeStatus() != HandshakeStatus.FINISHED &&
+                    engResult.getHandshakeStatus() != HandshakeStatus.NOT_HANDSHAKING &&
+                    engResult.getStatus() != SSLEngineResult.Status.OK) {
+                throw new IOException("SSL: SSLEngine return bad result! " + engResult);
             }
 
-            while (remaining > 0) {
+            int dataRemaining = pkgBuf.position();
+            int headRemaining = 4;
+            pkgBuf.flip();
+            headBuf.putInt(dataRemaining);
+            headBuf.flip();
+
+            while (headRemaining > 0) {
                 if (s_logger.isTraceEnabled()) {
-                    s_logger.trace("Writing " + remaining);
+                    s_logger.trace("Writing Header " + headRemaining);
                 }
-                long count = ch.write(data);
+                long count = ch.write(headBuf);
-                remaining -= count;
+                headRemaining -= count;
+            }
+            while (dataRemaining > 0) {
+                if (s_logger.isTraceEnabled()) {
+                    s_logger.trace("Writing Data " + dataRemaining);
+                }
+                long count = ch.write(pkgBuf);
+                dataRemaining -= count;
             }
         }
         return false;
     }
     
-    public synchronized void connect(SocketChannel ch) {
-        _connection.register(SelectionKey.OP_CONNECT, ch, this);
-    }
-    
     public InetSocketAddress getSocketAddress() {
         return _addr;
     }

utils/src/com/cloud/utils/nio/NioClient.java

@@ -23,6 +23,9 @@ import java.nio.channels.SelectionKey;
 import java.nio.channels.Selector;
 import java.nio.channels.SocketChannel;
 
+import javax.net.ssl.SSLEngine;
+import javax.net.ssl.SSLContext;
+
 import org.apache.log4j.Logger;
 
 public class NioClient extends NioConnection {
@@ -45,23 +48,49 @@ public class NioClient extends NioConnection {
         _selector = Selector.open();
         
         SocketChannel sch = SocketChannel.open();
-        sch.configureBlocking(false);
+        sch.configureBlocking(true);
         s_logger.info("Connecting to " + _host + ":" + _port);
 
         if(_bindAddress != null) {
             s_logger.info("Binding outbound interface at " + _bindAddress);
             
             InetSocketAddress addr = new InetSocketAddress(_bindAddress, 0);
-        	sch.socket().bind(addr);
+            sch.socket().bind(addr);
         }
 
         InetSocketAddress addr = new InetSocketAddress(_host, _port);
-        sch.connect(addr);
+        try {
+        	sch.connect(addr);
+        } catch (IOException e) {
+        	_selector.close();
+        	throw e;
+        }
 
+        SSLEngine sslEngine = null;
+        try {
+        	// Begin SSL handshake in BLOCKING mode
+        	sch.configureBlocking(true);
+
+        	SSLContext sslContext = initSSLContext(true);
+        	sslEngine = sslContext.createSSLEngine(_host, _port);
+        	sslEngine.setUseClientMode(true);
+
+        	doHandshake(sch, sslEngine, true);
+        	s_logger.info("SSL: Handshake done");
+        } catch (Exception e) {
+        	throw new IOException("SSL: Fail to init SSL! " + e);
+        }
+        
+        sch.configureBlocking(false);
         Link link = new Link(addr, this);
-        SelectionKey key = sch.register(_selector, SelectionKey.OP_CONNECT);
+        link.setSSLEngine(sslEngine);
+        SelectionKey key = sch.register(_selector, SelectionKey.OP_READ);
         link.setKey(key);
         key.attach(link);
+        // Notice we've already connected due to the handshake, so let's get the
+        // remaining task done
+        Task task = _factory.create(Task.Type.CONNECT, link, null);
+        _executor.execute(task);
     }
     
     @Override

utils/src/com/cloud/utils/nio/NioConnection.java

@@ -17,15 +17,20 @@
  */
 package com.cloud.utils.nio;
 
+import java.io.File;
+import java.io.FileInputStream;
 import java.io.IOException;
+import java.net.ConnectException;
 import java.net.InetSocketAddress;
 import java.net.Socket;
+import java.nio.ByteBuffer;
 import java.nio.channels.CancelledKeyException;
 import java.nio.channels.ClosedChannelException;
 import java.nio.channels.SelectionKey;
 import java.nio.channels.Selector;
 import java.nio.channels.ServerSocketChannel;
 import java.nio.channels.SocketChannel;
+import java.security.KeyStore;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
@@ -35,10 +40,19 @@ import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 
+import javax.net.ssl.KeyManagerFactory;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLEngine;
+import javax.net.ssl.SSLEngineResult;
+import javax.net.ssl.SSLSession;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.TrustManagerFactory;
+import javax.net.ssl.SSLEngineResult.HandshakeStatus;
+
 import org.apache.log4j.Logger;
 
 import com.cloud.utils.concurrency.NamedThreadFactory;
-
+import com.cloud.utils.nio.TrustAllManager;
 
 /**
  * NioConnection abstracts the NIO socket operations.  The Java implementation
@@ -51,6 +65,7 @@ public abstract class NioConnection implements Runnable {
     protected Selector _selector;
     protected Thread _thread;
     protected boolean _isRunning;
+    protected boolean _isStartup;
     protected int _port;
     protected List<ChangeRequest> _todos;
     protected HandlerFactory _factory;
@@ -73,6 +88,16 @@ public abstract class NioConnection implements Runnable {
         _thread = new Thread(this, _name + "-Selector");
         _isRunning = true;
         _thread.start();
+        // Wait until we got init() done
+        synchronized(_thread) {
+            try {
+                _thread.wait();
+            } catch (InterruptedException e) {
+                if (s_logger.isTraceEnabled()) {
+                    s_logger.info("Interrupted start thread ", e);
+                }
+            }
+        }
     }
 
     public void stop() {
@@ -87,13 +112,24 @@ public abstract class NioConnection implements Runnable {
         return _thread.isAlive();
     }
     
+    public boolean isStartup() {
+    	return _isStartup;
+    }
+    
     public void run() {
-        try {
+    	synchronized(_thread) {
-            init();
+    		try {
-        } catch (IOException e) {
+    			init();
-            s_logger.error("Unable to initialize the threads.", e);
+    		} catch (ConnectException e) {
-            return;
+    			s_logger.error("Unable to connect to remote");
-        }
+    			return;
+    		} catch (IOException e) {
+    			s_logger.error("Unable to initialize the threads.", e);
+    			return;
+    		}
+    		_isStartup = true;
+    		_thread.notifyAll();
+    	}
     	
         while (_isRunning) {
             try {
@@ -145,21 +181,164 @@ public abstract class NioConnection implements Runnable {
     abstract void registerLink(InetSocketAddress saddr, Link link);
     abstract void unregisterLink(InetSocketAddress saddr);
 
+    protected SSLContext initSSLContext(boolean isClient) throws Exception {
+        SSLContext sslContext = null;
+        KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
+        TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
+        KeyStore ks = KeyStore.getInstance("JKS");
+        TrustManager[] tms;
+        
+        if (!isClient) {
+        	char[] passphrase = "vmops.com".toCharArray();
+        	String keystorePath = "/etc/cloud/management/cloud.keystore";
+        	if (new File(keystorePath).exists()) {
+        		ks.load(new FileInputStream(keystorePath), passphrase);
+        	} else {
+        		s_logger.warn("SSL: Fail to find the generated keystore. Loading fail-safe one to continue.");
+        		ks.load(NioConnection.class.getResourceAsStream("/cloud.keystore"), passphrase);
+        	}
+        	kmf.init(ks, passphrase);
+        	tmf.init(ks);
+        	tms = tmf.getTrustManagers();
+        } else {
+        	ks.load(null, null);
+        	kmf.init(ks, null);
+        	tms = new TrustManager[1];
+        	tms[0] = new TrustAllManager();
+        }
+        
+        sslContext = SSLContext.getInstance("TLS");
+        sslContext.init(kmf.getKeyManagers(), tms, null);
+        s_logger.info("SSL: SSLcontext has been initialized");
+
+        return sslContext;
+    }
+
+    protected void doHandshake(SocketChannel ch, SSLEngine sslEngine,
+                               boolean isClient) throws IOException {
+        s_logger.info("SSL: begin Handshake, isClient: " + isClient);
+
+        SSLEngineResult engResult;
+        SSLSession sslSession = sslEngine.getSession();
+        HandshakeStatus hsStatus;
+        ByteBuffer in_pkgBuf =
+            ByteBuffer.allocate(sslSession.getPacketBufferSize() + 40);
+        ByteBuffer in_appBuf =
+            ByteBuffer.allocate(sslSession.getApplicationBufferSize() + 40);
+        ByteBuffer out_pkgBuf =
+            ByteBuffer.allocate(sslSession.getPacketBufferSize() + 40);
+        ByteBuffer out_appBuf =
+            ByteBuffer.allocate(sslSession.getApplicationBufferSize() + 40);
+        int count;
+
+        if (isClient) {
+            hsStatus = SSLEngineResult.HandshakeStatus.NEED_WRAP;
+        } else {
+            hsStatus = SSLEngineResult.HandshakeStatus.NEED_UNWRAP;
+        }
+
+        while (hsStatus != SSLEngineResult.HandshakeStatus.FINISHED) {
+            if (s_logger.isTraceEnabled()) {
+                s_logger.info("SSL: Handshake status " + hsStatus);
+            }
+            engResult = null;
+            if (hsStatus == SSLEngineResult.HandshakeStatus.NEED_WRAP) {
+                out_pkgBuf.clear();
+                out_appBuf.clear();
+                out_appBuf.put("Hello".getBytes());
+                engResult = sslEngine.wrap(out_appBuf, out_pkgBuf);
+                out_pkgBuf.flip();
+                int remain = out_pkgBuf.limit();
+                while (remain != 0) {
+                    remain -= ch.write(out_pkgBuf);
+                    if (remain < 0) {
+                        throw new IOException("Too much bytes sent?");
+                    }
+                }
+            } else if (hsStatus == SSLEngineResult.HandshakeStatus.NEED_UNWRAP) {
+                in_appBuf.clear();
+                // One packet may contained multiply operation
+                if (in_pkgBuf.position() == 0 || !in_pkgBuf.hasRemaining()) {
+                    in_pkgBuf.clear();
+                    count = ch.read(in_pkgBuf);
+                    if (count == -1) {
+                        throw new IOException("Connection closed with -1 on reading size.");
+                    }
+                    in_pkgBuf.flip();
+                }
+                engResult = sslEngine.unwrap(in_pkgBuf, in_appBuf);
+                ByteBuffer tmp_pkgBuf =
+                    ByteBuffer.allocate(sslSession.getPacketBufferSize() + 40);
+                while (engResult.getStatus() == SSLEngineResult.Status.BUFFER_UNDERFLOW) {
+                    // We need more packets to complete this operation
+                    if (s_logger.isTraceEnabled()) {
+                        s_logger.info("SSL: Buffer overflowed, getting more packets");
+                    }
+                    tmp_pkgBuf.clear();
+                    count = ch.read(tmp_pkgBuf);
+                    tmp_pkgBuf.flip();
+                    
+                    in_pkgBuf.mark();
+                    in_pkgBuf.position(in_pkgBuf.limit());
+                    in_pkgBuf.limit(in_pkgBuf.limit() + tmp_pkgBuf.limit());
+                    in_pkgBuf.put(tmp_pkgBuf);
+                    in_pkgBuf.reset();
+                    
+                    in_appBuf.clear();
+                    engResult = sslEngine.unwrap(in_pkgBuf, in_appBuf);
+                }
+            } else if (hsStatus == SSLEngineResult.HandshakeStatus.NEED_TASK) {
+                Runnable run;
+                while ((run = sslEngine.getDelegatedTask()) != null) {
+                    if (s_logger.isTraceEnabled()) {
+                        s_logger.info("SSL: Running delegated task!");
+                    }
+                    run.run();
+                }
+            } else if (hsStatus == SSLEngineResult.HandshakeStatus.NOT_HANDSHAKING) {
+                throw new IOException("NOT a handshaking!");
+            }
+            if (engResult != null && engResult.getStatus() != SSLEngineResult.Status.OK) {
+                throw new IOException("Fail to handshake! " + engResult.getStatus());
+            }
+            if (engResult != null)
+                hsStatus = engResult.getHandshakeStatus();
+            else
+                hsStatus = sslEngine.getHandshakeStatus();
+        }
+    }
 
     protected void accept(SelectionKey key) throws IOException {
         ServerSocketChannel serverSocketChannel = (ServerSocketChannel)key.channel();
 
         SocketChannel socketChannel = serverSocketChannel.accept();
         Socket socket = socketChannel.socket();
-        socketChannel.configureBlocking(false);
         socket.setKeepAlive(true);
 
         if (s_logger.isTraceEnabled()) {
             s_logger.trace("Connection accepted for " + socket);
         }
         
+        // Begin SSL handshake in BLOCKING mode
+        socketChannel.configureBlocking(true);
+
+        SSLEngine sslEngine = null;
+        try {
+        	SSLContext sslContext = initSSLContext(false);
+        	sslEngine = sslContext.createSSLEngine();
+        	sslEngine.setUseClientMode(false);
+        	sslEngine.setNeedClientAuth(false);
+
+        	doHandshake(socketChannel, sslEngine, false);
+        	s_logger.info("SSL: Handshake done");
+        } catch (Exception e) {
+        	throw new IOException("SSL: Fail to init SSL! " + e);
+        }
+        
+        socketChannel.configureBlocking(false);
         InetSocketAddress saddr = (InetSocketAddress)socket.getRemoteSocketAddress();
         Link link = new Link(saddr, this);
+        link.setSSLEngine(sslEngine);
         link.setKey(socketChannel.register(key.selector(), SelectionKey.OP_READ, link));
         Task task = _factory.create(Task.Type.CONNECT, link, null);
         registerLink(saddr, link);

utils/src/com/cloud/utils/nio/TrustAllManager.java

@@ -0,0 +1,43 @@
+/**
+ *  Copyright (C) 2011 Cloud.com, Inc.  All rights reserved.
+ * 
+ * This software is licensed under the GNU General Public License v3 or later.
+ * 
+ * It is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+package com.cloud.utils.nio;
+
+public class TrustAllManager implements javax.net.ssl.TrustManager, javax.net.ssl.X509TrustManager {
+    public java.security.cert.X509Certificate[] getAcceptedIssuers() {
+          return null;
+    }
+    
+    public boolean isServerTrusted(java.security.cert.X509Certificate[] certs) {
+          return true;
+    }
+    
+    public boolean isClientTrusted(java.security.cert.X509Certificate[] certs) {
+          return true;
+    }
+    
+    public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType)
+    throws java.security.cert.CertificateException {
+          return;
+    }
+    
+    public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType)
+    throws java.security.cert.CertificateException {
+          return;
+    }
+}