DRILL-5431: SSL Support (Java) - Java client server SSL implementation

Also enable OpenSSL support

Also fix exclusions and java-exec pom file to eliminate netty-tcnative as a transitive dependency on all projects

11 files changed, 1259 insertions, 236 deletions

diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/ExecConstants.java b/exec/java-exec/src/main/java/org/apache/drill/exec/ExecConstants.java
index 9b125cb03..5c19e1398 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/ExecConstants.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/ExecConstants.java
@@ -117,6 +117,18 @@ public final class ExecConstants {
   public static final String HASHAGG_FALLBACK_ENABLED_KEY = "drill.exec.hashagg.fallback.enabled";
   public static final BooleanValidator HASHAGG_FALLBACK_ENABLED_VALIDATOR = new BooleanValidator(HASHAGG_FALLBACK_ENABLED_KEY);
 
+  public static final String SSL_PROVIDER = "drill.exec.ssl.provider"; // valid values are "JDK", "OPENSSL" // default JDK
+  public static final String SSL_PROTOCOL = "drill.exec.ssl.protocol"; // valid values are SSL, SSLV2, SSLV3, TLS, TLSV1, TLSv1.1, TLSv1.2(default)
+  public static final String SSL_KEYSTORE_TYPE = "drill.exec.ssl.keyStoreType";
+  public static final String SSL_KEYSTORE_PATH = "drill.exec.ssl.keyStorePath";     // path to keystore. default : $JRE_HOME/lib/security/keystore.jks
+  public static final String SSL_KEYSTORE_PASSWORD = "drill.exec.ssl.keyStorePassword"; // default: changeit
+  public static final String SSL_KEY_PASSWORD = "drill.exec.ssl.keyPassword"; //
+  public static final String SSL_TRUSTSTORE_TYPE = "drill.exec.ssl.trustStoreType"; // valid values are jks(default), jceks, pkcs12
+  public static final String SSL_TRUSTSTORE_PATH = "drill.exec.ssl.trustStorePath"; // path to keystore. default : $JRE_HOME/lib/security/cacerts.jks
+  public static final String SSL_TRUSTSTORE_PASSWORD = "drill.exec.ssl.trustStorePassword"; // default: changeit
+  public static final String SSL_USE_HADOOP_CONF = "drill.exec.ssl.useHadoopConfig"; // Initialize ssl params from hadoop if not provided by drill. default: true
+  public static final String SSL_HANDSHAKE_TIMEOUT = "drill.exec.security.user.encryption.ssl.handshakeTimeout"; // Default 10 seconds
+
   public static final String TEXT_LINE_READER_BATCH_SIZE = "drill.exec.storage.file.text.batch.size";
   public static final String TEXT_LINE_READER_BUFFER_SIZE = "drill.exec.storage.file.text.buffer.size";
   public static final String HAZELCAST_SUBNETS = "drill.exec.cache.hazel.subnets";
@@ -133,10 +145,10 @@ public final class ExecConstants {
   public static final String HTTP_SESSION_MEMORY_RESERVATION = "drill.exec.http.session.memory.reservation";
   public static final String HTTP_SESSION_MEMORY_MAXIMUM = "drill.exec.http.session.memory.maximum";
   public static final String HTTP_SESSION_MAX_IDLE_SECS = "drill.exec.http.session_max_idle_secs";
-  public static final String HTTP_KEYSTORE_PATH = "drill.exec.ssl.keyStorePath";
-  public static final String HTTP_KEYSTORE_PASSWORD = "drill.exec.ssl.keyStorePassword";
-  public static final String HTTP_TRUSTSTORE_PATH = "drill.exec.ssl.trustStorePath";
-  public static final String HTTP_TRUSTSTORE_PASSWORD = "drill.exec.ssl.trustStorePassword";
+  public static final String HTTP_KEYSTORE_PATH = SSL_KEYSTORE_PATH;
+  public static final String HTTP_KEYSTORE_PASSWORD = SSL_KEYSTORE_PASSWORD;
+  public static final String HTTP_TRUSTSTORE_PATH = SSL_TRUSTSTORE_PATH;
+  public static final String HTTP_TRUSTSTORE_PASSWORD = SSL_TRUSTSTORE_PASSWORD;
   public static final String SYS_STORE_PROVIDER_CLASS = "drill.exec.sys.store.provider.class";
   public static final String SYS_STORE_PROVIDER_LOCAL_PATH = "drill.exec.sys.store.provider.local.path";
   public static final String SYS_STORE_PROVIDER_LOCAL_ENABLE_WRITE = "drill.exec.sys.store.provider.local.write";
@@ -153,6 +165,8 @@ public final class ExecConstants {
   public static final String USE_LOGIN_PRINCIPAL = "drill.exec.security.bit.auth.use_login_principal";
   public static final String USER_ENCRYPTION_SASL_ENABLED = "drill.exec.security.user.encryption.sasl.enabled";
   public static final String USER_ENCRYPTION_SASL_MAX_WRAPPED_SIZE = "drill.exec.security.user.encryption.sasl.max_wrapped_size";
+
+  public static final String USER_SSL_ENABLED = "drill.exec.security.user.encryption.ssl.enabled";
   public static final String BIT_ENCRYPTION_SASL_ENABLED = "drill.exec.security.bit.encryption.sasl.enabled";
   public static final String BIT_ENCRYPTION_SASL_MAX_WRAPPED_SIZE = "drill.exec.security.bit.encryption.sasl.max_wrapped_size";
 
@@ -208,7 +222,7 @@ public final class ExecConstants {
   public static final OptionValidator PARQUET_DICT_PAGE_SIZE_VALIDATOR = new PositiveLongValidator(PARQUET_DICT_PAGE_SIZE, Integer.MAX_VALUE);
   public static final String PARQUET_WRITER_COMPRESSION_TYPE = "store.parquet.compression";
   public static final OptionValidator PARQUET_WRITER_COMPRESSION_TYPE_VALIDATOR = new EnumeratedStringValidator(
-    PARQUET_WRITER_COMPRESSION_TYPE, "snappy", "gzip", "none");
+      PARQUET_WRITER_COMPRESSION_TYPE, "snappy", "gzip", "none");
   public static final String PARQUET_WRITER_ENABLE_DICTIONARY_ENCODING = "store.parquet.enable_dictionary_encoding";
   public static final OptionValidator PARQUET_WRITER_ENABLE_DICTIONARY_ENCODING_VALIDATOR = new BooleanValidator(
       PARQUET_WRITER_ENABLE_DICTIONARY_ENCODING);
@@ -464,7 +478,7 @@ public final class ExecConstants {
    */
   public static final String IMPERSONATION_POLICIES_KEY = "exec.impersonation.inbound_policies";
   public static final StringValidator IMPERSONATION_POLICY_VALIDATOR =
-    new InboundImpersonationManager.InboundImpersonationPolicyValidator(IMPERSONATION_POLICIES_KEY);
+      new InboundImpersonationManager.InboundImpersonationPolicyValidator(IMPERSONATION_POLICIES_KEY);
 
 
   /**
@@ -546,5 +560,5 @@ public final class ExecConstants {
 
   public static String bootDefaultFor(String name) {
     return OPTION_DEFAULTS_ROOT + name;
-  }
+}
 }
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/SSLConfig.java b/exec/java-exec/src/main/java/org/apache/drill/exec/SSLConfig.java
deleted file mode 100644
index c6d637480..000000000
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/SSLConfig.java
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you 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 org.apache.drill.exec;
-
-import com.typesafe.config.Config;
-import org.apache.drill.common.exceptions.DrillException;
-
-public class SSLConfig {
-
-  private final String keystorePath;
-
-  private final String keystorePassword;
-
-  private final String truststorePath;
-
-  private final String truststorePassword;
-
-
-  public SSLConfig(Config config) throws DrillException {
-
-    keystorePath = config.getString(ExecConstants.HTTP_KEYSTORE_PATH).trim();
-
-    keystorePassword = config.getString(ExecConstants.HTTP_KEYSTORE_PASSWORD).trim();
-
-    truststorePath = config.getString(ExecConstants.HTTP_TRUSTSTORE_PATH).trim();
-
-    truststorePassword = config.getString(ExecConstants.HTTP_TRUSTSTORE_PASSWORD).trim();
-
-    /*If keystorePath or keystorePassword is provided in the configuration file use that*/
-    if (!keystorePath.isEmpty() || !keystorePassword.isEmpty()) {
-      if (keystorePath.isEmpty()) {
-        throw new DrillException(" *.ssl.keyStorePath in the configuration file is empty, but *.ssl.keyStorePassword is set");
-      }
-      else if (keystorePassword.isEmpty()){
-        throw new DrillException(" *.ssl.keyStorePassword in the configuration file is empty, but *.ssl.keyStorePath is set ");
-      }
-
-    }
-  }
-
-  public boolean isSslValid() {  return !keystorePath.isEmpty() && !keystorePassword.isEmpty(); }
-
-  public String getKeyStorePath() {  return keystorePath; }
-
-  public String getKeyStorePassword() {  return keystorePassword; }
-
-  public boolean hasTrustStorePath() {  return !truststorePath.isEmpty(); }
-
-  public boolean hasTrustStorePassword() {  return !truststorePassword.isEmpty(); }
-
-  public String getTrustStorePath() {  return truststorePath; }
-
-  public String getTrustStorePassword() {  return truststorePassword; }
-}
\ No newline at end of file
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/client/DrillClient.java b/exec/java-exec/src/main/java/org/apache/drill/exec/client/DrillClient.java
index 9fbbfddaf..84b34a7ca 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/client/DrillClient.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/client/DrillClient.java
@@ -367,8 +367,12 @@ public class DrillClient implements Closeable, ConnectionThrottle {
     DrillbitEndpoint endpoint;
 
     while (triedEndpointIndex < connectTriesVal) {
-      client = new UserClient(clientName, config, supportComplexTypes, allocator, eventLoopGroup, executor);
       endpoint = endpoints.get(triedEndpointIndex);
+      // Note: the properties member is a DrillProperties instance which lower cases names of
+      // properties. That does not work too well with properties that are mixed case.
+      // For user client severla properties are mixed case so we do not use the properties member
+      // but instead pass the props parameter.
+      client = new UserClient(clientName, config, props, supportComplexTypes, allocator, eventLoopGroup, executor, endpoint);
       logger.debug("Connecting to server {}:{}", endpoint.getAddress(), endpoint.getUserPort());
 
       if (!properties.containsKey(DrillProperties.SERVICE_HOST)) {
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserClient.java b/exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserClient.java
index 2f4753857..99614bdfa 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserClient.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserClient.java
@@ -20,16 +20,25 @@ package org.apache.drill.exec.rpc.user;
 import java.io.IOException;
 import java.util.List;
 import java.util.Map;
+import java.util.Properties;
 import java.util.Set;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Executor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
 
+import javax.net.ssl.SSLEngine;
 import javax.security.sasl.SaslClient;
 import javax.security.sasl.SaslException;
 
+import io.netty.channel.ChannelPipeline;
+import io.netty.handler.ssl.SslHandler;
 import org.apache.drill.common.KerberosUtil;
 import org.apache.drill.common.config.DrillConfig;
 import org.apache.drill.common.config.DrillProperties;
+import org.apache.drill.common.exceptions.DrillException;
+import org.apache.drill.exec.client.InvalidConnectionInfoException;
+import org.apache.drill.exec.ssl.SSLConfig;
 import org.apache.drill.exec.memory.BufferAllocator;
 import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint;
 import org.apache.drill.exec.proto.GeneralRPCProtos.Ack;
@@ -55,6 +64,7 @@ import org.apache.drill.exec.proto.UserProtos.UserToBitHandshake;
 import org.apache.drill.exec.rpc.AbstractClientConnection;
 import org.apache.drill.exec.rpc.Acks;
 import org.apache.drill.exec.rpc.BasicClient;
+import org.apache.drill.exec.rpc.ConnectionMultiListener;
 import org.apache.drill.exec.rpc.DrillRpcFuture;
 import org.apache.drill.exec.rpc.NonTransientRpcException;
 import org.apache.drill.exec.rpc.OutOfMemoryHandler;
@@ -62,6 +72,7 @@ import org.apache.drill.exec.rpc.ProtobufLengthDecoder;
 import org.apache.drill.exec.rpc.Response;
 import org.apache.drill.exec.rpc.ResponseSender;
 import org.apache.drill.exec.rpc.RpcConnectionHandler;
+import org.apache.drill.exec.rpc.RpcConstants;
 import org.apache.drill.exec.rpc.RpcException;
 import org.apache.drill.exec.rpc.RpcOutcomeListener;
 import org.apache.drill.exec.rpc.security.AuthStringUtil;
@@ -70,7 +81,9 @@ import org.apache.drill.exec.rpc.security.AuthenticatorFactory;
 import org.apache.drill.exec.rpc.security.ClientAuthenticatorProvider;
 import org.apache.drill.exec.rpc.security.plain.PlainFactory;
 import org.apache.drill.exec.rpc.security.SaslProperties;
+import org.apache.drill.exec.ssl.SSLConfigBuilder;
 import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.hadoop.security.ssl.SSLFactory;
 import org.slf4j.Logger;
 
 import com.google.common.base.Strings;
@@ -87,8 +100,8 @@ import io.netty.buffer.ByteBuf;
 import io.netty.channel.EventLoopGroup;
 import io.netty.channel.socket.SocketChannel;
 
-public class UserClient extends BasicClient<RpcType, UserClient.UserToBitConnection,
-    UserToBitHandshake, BitToUserHandshake> {
+public class UserClient
+    extends BasicClient<RpcType, UserClient.UserToBitConnection, UserToBitHandshake, BitToUserHandshake> {
   private static final Logger logger = org.slf4j.LoggerFactory.getLogger(UserClient.class);
 
   private final BufferAllocator allocator;
@@ -102,19 +115,47 @@ public class UserClient extends BasicClient<RpcType, UserClient.UserToBitConnect
   // these are used for authentication
   private volatile List<String> serverAuthMechanisms = null;
   private volatile boolean authComplete = true;
-
-  public UserClient(String clientName, DrillConfig config, boolean supportComplexTypes,
-      BufferAllocator allocator, EventLoopGroup eventLoopGroup, Executor eventExecutor) {
-    super(
-        UserRpcConfig.getMapping(config, eventExecutor),
-        allocator.getAsByteBufAllocator(),
-        eventLoopGroup,
-        RpcType.HANDSHAKE,
-        BitToUserHandshake.class,
-        BitToUserHandshake.PARSER);
+  private SSLConfig sslConfig;
+  private DrillbitEndpoint endpoint;
+
+  public UserClient(String clientName, DrillConfig config, Properties properties, boolean supportComplexTypes,
+      BufferAllocator allocator, EventLoopGroup eventLoopGroup, Executor eventExecutor,
+      DrillbitEndpoint endpoint) throws NonTransientRpcException {
+    super(UserRpcConfig.getMapping(config, eventExecutor), allocator.getAsByteBufAllocator(),
+        eventLoopGroup, RpcType.HANDSHAKE, BitToUserHandshake.class, BitToUserHandshake.PARSER);
+    this.endpoint = endpoint; // save the endpoint; it might be needed by SSL init.
     this.clientName = clientName;
     this.allocator = allocator;
     this.supportComplexTypes = supportComplexTypes;
+    try {
+      this.sslConfig = new SSLConfigBuilder().properties(properties).mode(SSLFactory.Mode.CLIENT)
+          .initializeSSLContext(true).validateKeyStore(false).build();
+    } catch (DrillException e) {
+      throw new InvalidConnectionInfoException(e.getMessage());
+    }
+
+  }
+
+  @Override protected void setupSSL(ChannelPipeline pipe,
+      ConnectionMultiListener.SSLHandshakeListener sslHandshakeListener) {
+
+    String peerHost = endpoint.getAddress();
+    int peerPort = endpoint.getUserPort();
+    SSLEngine sslEngine = sslConfig.createSSLEngine(allocator, peerHost, peerPort);
+
+    // Add SSL handler into pipeline
+    SslHandler sslHandler = new SslHandler(sslEngine);
+    sslHandler.setHandshakeTimeoutMillis(sslConfig.getHandshakeTimeout());
+
+    // Add a listener for SSL Handshake complete. The Drill client handshake will be enabled only
+    // after this is done.
+    sslHandler.handshakeFuture().addListener(sslHandshakeListener);
+    pipe.addFirst(RpcConstants.SSL_HANDLER, sslHandler);
+    logger.debug(sslConfig.toString());
+  }
+
+  @Override protected boolean isSslEnabled() {
+    return sslConfig.isUserSslEnabled();
   }
 
   public RpcEndpointInfos getServerInfos() {
@@ -132,38 +173,51 @@ public class UserClient extends BasicClient<RpcType, UserClient.UserToBitConnect
   /**
    * Connects, and if required, authenticates. This method blocks until both operations are complete.
    *
-   * @param endpoint endpoint to connect to
-   * @param properties properties
+   * @param endpoint    endpoint to connect to
+   * @param properties  properties
    * @param credentials credentials
    * @throws RpcException if either connection or authentication fails
    */
   public void connect(final DrillbitEndpoint endpoint, final DrillProperties properties,
-                      final UserCredentials credentials) throws RpcException {
-    final UserToBitHandshake.Builder hsBuilder = UserToBitHandshake.newBuilder()
-        .setRpcVersion(UserRpcConfig.RPC_VERSION)
-        .setSupportListening(true)
-        .setSupportComplexTypes(supportComplexTypes)
-        .setSupportTimeout(true)
-        .setCredentials(credentials)
-        .setClientInfos(UserRpcUtils.getRpcEndpointInfos(clientName))
-        .setSaslSupport(SaslSupport.SASL_PRIVACY)
-        .setProperties(properties.serializeForServer());
+      final UserCredentials credentials) throws RpcException {
+    final UserToBitHandshake.Builder hsBuilder =
+        UserToBitHandshake.newBuilder()
+            .setRpcVersion(UserRpcConfig.RPC_VERSION)
+            .setSupportListening(true)
+            .setSupportComplexTypes(supportComplexTypes)
+            .setSupportTimeout(true).setCredentials(credentials)
+            .setClientInfos(UserRpcUtils.getRpcEndpointInfos(clientName))
+            .setSaslSupport(SaslSupport.SASL_PRIVACY)
+            .setProperties(properties.serializeForServer());
 
     // Only used for testing purpose
     if (properties.containsKey(DrillProperties.TEST_SASL_LEVEL)) {
-      hsBuilder.setSaslSupport(SaslSupport.valueOf(
-          Integer.parseInt(properties.getProperty(DrillProperties.TEST_SASL_LEVEL))));
+      hsBuilder.setSaslSupport(
+          SaslSupport.valueOf(Integer.parseInt(properties.getProperty(DrillProperties.TEST_SASL_LEVEL))));
     }
 
-    connect(hsBuilder.build(), endpoint).checkedGet();
+    if (sslConfig.isUserSslEnabled()) {
+      try {
+        connect(hsBuilder.build(), endpoint)
+            .checkedGet(sslConfig.getHandshakeTimeout(), TimeUnit.MILLISECONDS);
+      } catch (TimeoutException e) {
+        String msg = new StringBuilder().append(
+            "Connecting to the server timed out. This is sometimes due to a mismatch in the SSL configuration between client and server. [ Exception: ")
+            .append(e.getMessage()).append("]").toString();
+        throw new NonTransientRpcException(msg);
+      }
+    } else {
+      connect(hsBuilder.build(), endpoint).checkedGet();
+    }
 
     // Check if client needs encryption and server is not configured for encryption.
-    final boolean clientNeedsEncryption = properties.containsKey(DrillProperties.SASL_ENCRYPT)
-        && Boolean.parseBoolean(properties.getProperty(DrillProperties.SASL_ENCRYPT));
+    final boolean clientNeedsEncryption = properties.containsKey(DrillProperties.SASL_ENCRYPT) && Boolean
+        .parseBoolean(properties.getProperty(DrillProperties.SASL_ENCRYPT));
 
-    if(clientNeedsEncryption && !connection.isEncryptionEnabled()) {
-      throw new NonTransientRpcException("Client needs encrypted connection but server is not configured for " +
-          "encryption. Please check connection parameter or contact your administrator");
+    if (clientNeedsEncryption && !connection.isEncryptionEnabled()) {
+      throw new NonTransientRpcException(
+          "Client needs encrypted connection but server is not configured for "
+              + "encryption. Please check connection parameter or contact your administrator");
     }
 
     if (serverAuthMechanisms != null) {
@@ -176,31 +230,28 @@ public class UserClient extends BasicClient<RpcType, UserClient.UserToBitConnect
   }
 
   private CheckedFuture<Void, RpcException> connect(final UserToBitHandshake handshake,
-                                                    final DrillbitEndpoint endpoint) {
+      final DrillbitEndpoint endpoint) {
     final SettableFuture<Void> connectionSettable = SettableFuture.create();
     final CheckedFuture<Void, RpcException> connectionFuture =
         new AbstractCheckedFuture<Void, RpcException>(connectionSettable) {
-          @Override
-          protected RpcException mapException(Exception e) {
+          @Override protected RpcException mapException(Exception e) {
             return RpcException.mapException(e);
           }
         };
     final RpcConnectionHandler<UserToBitConnection> connectionHandler =
         new RpcConnectionHandler<UserToBitConnection>() {
-          @Override
-          public void connectionSucceeded(UserToBitConnection connection) {
+          @Override public void connectionSucceeded(UserToBitConnection connection) {
             connectionSettable.set(null);
           }
 
-          @Override
-          public void connectionFailed(FailureType type, Throwable t) {
-            connectionSettable.setException(new RpcException(String.format("%s : %s",
-                type.name(), t.getMessage()), t));
+          @Override public void connectionFailed(FailureType type, Throwable t) {
+            connectionSettable
+                .setException(new RpcException(String.format("%s : %s", type.name(), t.getMessage()), t));
           }
         };
 
-    connectAsClient(queryResultHandler.getWrappedConnectionHandler(connectionHandler),
-        handshake, endpoint.getAddress(), endpoint.getUserPort());
+    connectAsClient(queryResultHandler.getWrappedConnectionHandler(connectionHandler), handshake,
+        endpoint.getAddress(), endpoint.getUserPort());
 
     return connectionFuture;
   }
@@ -211,15 +262,15 @@ public class UserClient extends BasicClient<RpcType, UserClient.UserToBitConnect
     // Set correct QOP property and Strength based on server needs encryption or not.
     // If ChunkMode is enabled then negotiate for buffer size equal to wrapChunkSize,
     // If ChunkMode is disabled then negotiate for MAX_WRAPPED_SIZE buffer size.
-    propertiesMap.putAll(SaslProperties.getSaslProperties(connection.isEncryptionEnabled(),
-                                                          connection.getMaxWrappedSize()));
+    propertiesMap.putAll(
+        SaslProperties.getSaslProperties(connection.isEncryptionEnabled(), connection.getMaxWrappedSize()));
 
-    final SettableFuture<Void> authSettable = SettableFuture.create(); // use handleAuthFailure to setException
+    final SettableFuture<Void> authSettable =
+        SettableFuture.create(); // use handleAuthFailure to setException
     final CheckedFuture<Void, SaslException> authFuture =
         new AbstractCheckedFuture<Void, SaslException>(authSettable) {
 
-          @Override
-          protected SaslException mapException(Exception e) {
+          @Override protected SaslException mapException(Exception e) {
             if (e instanceof ExecutionException) {
               final Throwable cause = Throwables.getRootCause(e);
               if (cause instanceof SaslException) {
@@ -227,8 +278,9 @@ public class UserClient extends BasicClient<RpcType, UserClient.UserToBitConnect
                     connection.getEncryptionCtxtString(), cause.getMessage()), cause);
               }
             }
-            return new SaslException(String.format("Authentication failed unexpectedly. [Details: %s, Error %s]",
-                connection.getEncryptionCtxtString(), e.getMessage()), e);
+            return new SaslException(String
+                .format("Authentication failed unexpectedly. [Details: %s, Error %s]",
+                    connection.getEncryptionCtxtString(), e.getMessage()), e);
           }
         };
 
@@ -244,8 +296,10 @@ public class UserClient extends BasicClient<RpcType, UserClient.UserToBitConnect
       ugi = factory.createAndLoginUser(propertiesMap);
       saslClient = factory.createSaslClient(ugi, propertiesMap);
       if (saslClient == null) {
-        throw new SaslException(String.format("Cannot initiate authentication using %s mechanism. Insufficient " +
-            "credentials or selected mechanism doesn't support configured security layers?", factory.getSimpleName()));
+        throw new SaslException(String.format(
+            "Cannot initiate authentication using %s mechanism. Insufficient "
+                + "credentials or selected mechanism doesn't support configured security layers?",
+            factory.getSimpleName()));
       }
       connection.setSaslClient(saslClient);
     } catch (final IOException e) {
@@ -256,26 +310,24 @@ public class UserClient extends BasicClient<RpcType, UserClient.UserToBitConnect
     logger.trace("Initiating SASL exchange.");
     new AuthenticationOutcomeListener<>(this, connection, RpcType.SASL_MESSAGE, ugi,
         new RpcOutcomeListener<Void>() {
-          @Override
-          public void failed(RpcException ex) {
+          @Override public void failed(RpcException ex) {
             authSettable.setException(ex);
           }
 
-          @Override
-          public void success(Void value, ByteBuf buffer) {
+          @Override public void success(Void value, ByteBuf buffer) {
             authComplete = true;
             authSettable.set(null);
           }
 
-          @Override
-          public void interrupted(InterruptedException e) {
+          @Override public void interrupted(InterruptedException e) {
             authSettable.setException(e);
           }
         }).initiate(mechanismName);
     return authFuture;
   }
 
-  private AuthenticatorFactory getAuthenticatorFactory(final DrillProperties properties) throws SaslException {
+  private AuthenticatorFactory getAuthenticatorFactory(final DrillProperties properties)
+      throws SaslException {
     final Set<String> mechanismSet = AuthStringUtil.asSet(serverAuthMechanisms);
 
     // first, check if a certain mechanism must be used
@@ -285,129 +337,126 @@ public class UserClient extends BasicClient<RpcType, UserClient.UserToBitConnect
         throw new SaslException(String.format("Unknown mechanism: %s", authMechanism));
       }
       if (!mechanismSet.contains(authMechanism.toUpperCase())) {
-        throw new SaslException(String.format("Server does not support authentication using: %s. [Details: %s]",
-            authMechanism, connection.getEncryptionCtxtString()));
+        throw new SaslException(String
+            .format("Server does not support authentication using: %s. [Details: %s]", authMechanism,
+                connection.getEncryptionCtxtString()));
       }
-      return ClientAuthenticatorProvider.getInstance()
-          .getAuthenticatorFactory(authMechanism);
+      return ClientAuthenticatorProvider.getInstance().getAuthenticatorFactory(authMechanism);
     }
 
     // check if Kerberos is supported, and the service principal is provided
-    if (mechanismSet.contains(KerberosUtil.KERBEROS_SIMPLE_NAME) &&
-        properties.containsKey(DrillProperties.SERVICE_PRINCIPAL)) {
+    if (mechanismSet.contains(KerberosUtil.KERBEROS_SIMPLE_NAME) && properties
+        .containsKey(DrillProperties.SERVICE_PRINCIPAL)) {
       return ClientAuthenticatorProvider.getInstance()
           .getAuthenticatorFactory(KerberosUtil.KERBEROS_SIMPLE_NAME);
     }
 
     // check if username/password is supported, and username/password are provided
-    if (mechanismSet.contains(PlainFactory.SIMPLE_NAME) &&
-        properties.containsKey(DrillProperties.USER) &&
-        !Strings.isNullOrEmpty(properties.getProperty(DrillProperties.PASSWORD))) {
-      return ClientAuthenticatorProvider.getInstance()
-          .getAuthenticatorFactory(PlainFactory.SIMPLE_NAME);
+    if (mechanismSet.contains(PlainFactory.SIMPLE_NAME) && properties.containsKey(DrillProperties.USER)
+        && !Strings.isNullOrEmpty(properties.getProperty(DrillProperties.PASSWORD))) {
+      return ClientAuthenticatorProvider.getInstance().getAuthenticatorFactory(PlainFactory.SIMPLE_NAME);
     }
 
-    throw new SaslException(String.format("Server requires authentication using %s. Insufficient credentials?. " +
-        "[Details: %s]. ", serverAuthMechanisms, connection.getEncryptionCtxtString()));
+    throw new SaslException(String
+        .format("Server requires authentication using %s. Insufficient credentials?. " + "[Details: %s]. ",
+            serverAuthMechanisms, connection.getEncryptionCtxtString()));
   }
 
-  protected <SEND extends MessageLite, RECEIVE extends MessageLite>
-  void send(RpcOutcomeListener<RECEIVE> listener, RpcType rpcType, SEND protobufBody, Class<RECEIVE> clazz,
-            boolean allowInEventLoop, ByteBuf... dataBodies) {
+  protected <SEND extends MessageLite, RECEIVE extends MessageLite> void send(
+      RpcOutcomeListener<RECEIVE> listener, RpcType rpcType, SEND protobufBody, Class<RECEIVE> clazz,
+      boolean allowInEventLoop, ByteBuf... dataBodies) {
     super.send(listener, connection, rpcType, protobufBody, clazz, allowInEventLoop, dataBodies);
   }
 
-  @Override
-  protected MessageLite getResponseDefaultInstance(int rpcType) throws RpcException {
+  @Override protected MessageLite getResponseDefaultInstance(int rpcType) throws RpcException {
     switch (rpcType) {
-    case RpcType.ACK_VALUE:
-      return Ack.getDefaultInstance();
-    case RpcType.HANDSHAKE_VALUE:
-      return BitToUserHandshake.getDefaultInstance();
-    case RpcType.QUERY_HANDLE_VALUE:
-      return QueryId.getDefaultInstance();
-    case RpcType.QUERY_RESULT_VALUE:
-      return QueryResult.getDefaultInstance();
-    case RpcType.QUERY_DATA_VALUE:
-      return QueryData.getDefaultInstance();
-    case RpcType.QUERY_PLAN_FRAGMENTS_VALUE:
-      return QueryPlanFragments.getDefaultInstance();
-    case RpcType.CATALOGS_VALUE:
-      return GetCatalogsResp.getDefaultInstance();
-    case RpcType.SCHEMAS_VALUE:
-      return GetSchemasResp.getDefaultInstance();
-    case RpcType.TABLES_VALUE:
-      return GetTablesResp.getDefaultInstance();
-    case RpcType.COLUMNS_VALUE:
-      return GetColumnsResp.getDefaultInstance();
-    case RpcType.PREPARED_STATEMENT_VALUE:
-      return CreatePreparedStatementResp.getDefaultInstance();
-    case RpcType.SASL_MESSAGE_VALUE:
-      return SaslMessage.getDefaultInstance();
-    case RpcType.SERVER_META_VALUE:
-      return GetServerMetaResp.getDefaultInstance();
+      case RpcType.ACK_VALUE:
+        return Ack.getDefaultInstance();
+      case RpcType.HANDSHAKE_VALUE:
+        return BitToUserHandshake.getDefaultInstance();
+      case RpcType.QUERY_HANDLE_VALUE:
+        return QueryId.getDefaultInstance();
+      case RpcType.QUERY_RESULT_VALUE:
+        return QueryResult.getDefaultInstance();
+      case RpcType.QUERY_DATA_VALUE:
+        return QueryData.getDefaultInstance();
+      case RpcType.QUERY_PLAN_FRAGMENTS_VALUE:
+        return QueryPlanFragments.getDefaultInstance();
+      case RpcType.CATALOGS_VALUE:
+        return GetCatalogsResp.getDefaultInstance();
+      case RpcType.SCHEMAS_VALUE:
+        return GetSchemasResp.getDefaultInstance();
+      case RpcType.TABLES_VALUE:
+        return GetTablesResp.getDefaultInstance();
+      case RpcType.COLUMNS_VALUE:
+        return GetColumnsResp.getDefaultInstance();
+      case RpcType.PREPARED_STATEMENT_VALUE:
+        return CreatePreparedStatementResp.getDefaultInstance();
+      case RpcType.SASL_MESSAGE_VALUE:
+        return SaslMessage.getDefaultInstance();
+      case RpcType.SERVER_META_VALUE:
+        return GetServerMetaResp.getDefaultInstance();
     }
     throw new RpcException(String.format("Unable to deal with RpcType of %d", rpcType));
   }
 
-  @Override
-  protected void handle(UserToBitConnection connection, int rpcType, ByteBuf pBody, ByteBuf dBody,
-                        ResponseSender sender) throws RpcException {
+  @Override protected void handle(UserToBitConnection connection, int rpcType, ByteBuf pBody, ByteBuf dBody,
+      ResponseSender sender) throws RpcException {
     if (!authComplete) {
       // Remote should not be making any requests before authenticating, drop connection
-      throw new RpcException(String.format("Request of type %d is not allowed without authentication. " +
-          "Remote on %s must authenticate before making requests. Connection dropped.",
-          rpcType, connection.getRemoteAddress()));
+      throw new RpcException(String.format("Request of type %d is not allowed without authentication. "
+              + "Remote on %s must authenticate before making requests. Connection dropped.", rpcType,
+          connection.getRemoteAddress()));
     }
     switch (rpcType) {
-    case RpcType.QUERY_DATA_VALUE:
-      queryResultHandler.batchArrived(connection, pBody, dBody);
-      sender.send(new Response(RpcType.ACK, Acks.OK));
-      break;
-    case RpcType.QUERY_RESULT_VALUE:
-      queryResultHandler.resultArrived(pBody);
-      sender.send(new Response(RpcType.ACK, Acks.OK));
-      break;
-    default:
-      throw new RpcException(String.format("Unknown Rpc Type %d. ", rpcType));
+      case RpcType.QUERY_DATA_VALUE:
+        queryResultHandler.batchArrived(connection, pBody, dBody);
+        sender.send(new Response(RpcType.ACK, Acks.OK));
+        break;
+      case RpcType.QUERY_RESULT_VALUE:
+        queryResultHandler.resultArrived(pBody);
+        sender.send(new Response(RpcType.ACK, Acks.OK));
+        break;
+      default:
+        throw new RpcException(String.format("Unknown Rpc Type %d. ", rpcType));
     }
   }
 
-  @Override
-  protected void validateHandshake(BitToUserHandshake inbound) throws RpcException {
-//    logger.debug("Handling handshake from bit to user. {}", inbound);
+  @Override protected void validateHandshake(BitToUserHandshake inbound) throws RpcException {
+    //    logger.debug("Handling handshake from bit to user. {}", inbound);
     if (inbound.hasServerInfos()) {
       serverInfos = inbound.getServerInfos();
     }
     supportedMethods = Sets.immutableEnumSet(inbound.getSupportedMethodsList());
 
     switch (inbound.getStatus()) {
-    case SUCCESS:
-      break;
-    case AUTH_REQUIRED: {
-      authComplete = false;
-      serverAuthMechanisms = ImmutableList.copyOf(inbound.getAuthenticationMechanismsList());
-      connection.setEncryption(inbound.hasEncrypted() && inbound.getEncrypted());
-
-      if (inbound.hasMaxWrappedSize()) {
-        connection.setMaxWrappedSize(inbound.getMaxWrappedSize());
+      case SUCCESS:
+        break;
+      case AUTH_REQUIRED: {
+        authComplete = false;
+        serverAuthMechanisms = ImmutableList.copyOf(inbound.getAuthenticationMechanismsList());
+        connection.setEncryption(inbound.hasEncrypted() && inbound.getEncrypted());
+
+        if (inbound.hasMaxWrappedSize()) {
+          connection.setMaxWrappedSize(inbound.getMaxWrappedSize());
+        }
+        logger.trace(String
+            .format("Server requires authentication with encryption context %s before proceeding.",
+                connection.getEncryptionCtxtString()));
+        break;
       }
-      logger.trace(String.format("Server requires authentication with encryption context %s before proceeding.",
-          connection.getEncryptionCtxtString()));
-      break;
-    }
-    case AUTH_FAILED:
-    case RPC_VERSION_MISMATCH:
-    case UNKNOWN_FAILURE:
-      final String errMsg = String.format("Status: %s, Error Id: %s, Error message: %s",
-          inbound.getStatus(), inbound.getErrorId(), inbound.getErrorMessage());
-      logger.error(errMsg);
-      throw new NonTransientRpcException(errMsg);
+      case AUTH_FAILED:
+      case RPC_VERSION_MISMATCH:
+      case UNKNOWN_FAILURE:
+        final String errMsg = String
+            .format("Status: %s, Error Id: %s, Error message: %s", inbound.getStatus(),
+                inbound.getErrorId(), inbound.getErrorMessage());
+        logger.error(errMsg);
+        throw new NonTransientRpcException(errMsg);
     }
   }
 
-  @Override
-  protected UserToBitConnection initRemoteConnection(SocketChannel channel) {
+  @Override protected UserToBitConnection initRemoteConnection(SocketChannel channel) {
     super.initRemoteConnection(channel);
     return new UserToBitConnection(channel);
   }
@@ -421,39 +470,34 @@ public class UserClient extends BasicClient<RpcType, UserClient.UserToBitConnect
       super(channel, "user client");
     }
 
-    @Override
-    public BufferAllocator getAllocator() {
+    @Override public BufferAllocator getAllocator() {
       return allocator;
     }
 
-    @Override
-    protected Logger getLogger() {
+    @Override protected Logger getLogger() {
       return logger;
     }
 
-    @Override
-    public void incConnectionCounter() {
+    @Override public void incConnectionCounter() {
       // no-op
     }
 
-    @Override
-    public void decConnectionCounter() {
+    @Override public void decConnectionCounter() {
       // no-op
     }
   }
 
-  @Override
-  public ProtobufLengthDecoder getDecoder(BufferAllocator allocator) {
+  @Override public ProtobufLengthDecoder getDecoder(BufferAllocator allocator) {
     return new UserProtobufLengthDecoder(allocator, OutOfMemoryHandler.DEFAULT_INSTANCE);
   }
 
   /**
    * planQuery is an API to plan a query without query execution
+   *
    * @param req - data necessary to plan query
    * @return list of PlanFragments that can later on be submitted for execution
    */
-  public DrillRpcFuture<QueryPlanFragments> planQuery(
-      GetQueryPlanFragments req) {
+  public DrillRpcFuture<QueryPlanFragments> planQuery(GetQueryPlanFragments req) {
     return send(RpcType.GET_QUERY_PLAN_FRAGMENTS, req, QueryPlanFragments.class);
   }
 }
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserConnectionConfig.java b/exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserConnectionConfig.java
index 57ad4d51b..4e4c80e97 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserConnectionConfig.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserConnectionConfig.java
@@ -33,6 +33,7 @@ class UserConnectionConfig extends AbstractConnectionConfig {
   private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(UserConnectionConfig.class);
 
   private final boolean authEnabled;
+  private final boolean sslEnabled;
   private final InboundImpersonationManager impersonationManager;
 
   private final UserServerRequestHandler handler;
@@ -75,10 +76,16 @@ class UserConnectionConfig extends AbstractConnectionConfig {
     } else {
       authEnabled = false;
     }
-
     impersonationManager = !config.getBoolean(ExecConstants.IMPERSONATION_ENABLED)
         ? null
         : new InboundImpersonationManager();
+
+    sslEnabled = config.getBoolean(ExecConstants.USER_SSL_ENABLED);
+
+    if(isSSLEnabled() && isAuthEnabled() && isEncryptionEnabled()){
+      logger.warn("The server is configured to use both SSL and SASL encryption (only one should be configured).");
+    }
+
   }
 
   @Override
@@ -90,6 +97,10 @@ class UserConnectionConfig extends AbstractConnectionConfig {
     return authEnabled;
   }
 
+  boolean isSSLEnabled() {
+    return sslEnabled;
+  }
+
   InboundImpersonationManager getImpersonationManager() {
     return impersonationManager;
   }
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserServer.java b/exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserServer.java
index 254fdca29..c0573db81 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserServer.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserServer.java
@@ -21,9 +21,15 @@ import java.io.IOException;
 import java.net.SocketAddress;
 import java.util.UUID;
 
+import javax.net.ssl.SSLEngine;
 import javax.security.sasl.SaslException;
 
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelPipeline;
+import io.netty.handler.ssl.SslHandler;
 import org.apache.drill.common.config.DrillProperties;
+import org.apache.drill.common.exceptions.DrillException;
+import org.apache.drill.exec.ssl.SSLConfig;
 import org.apache.drill.exec.exception.DrillbitStartupException;
 import org.apache.drill.exec.memory.BufferAllocator;
 import org.apache.drill.exec.physical.impl.materialize.QueryWritableBatch;
@@ -53,8 +59,10 @@ import org.apache.drill.exec.rpc.security.plain.PlainFactory;
 import org.apache.drill.exec.rpc.user.UserServer.BitToUserConnection;
 import org.apache.drill.exec.rpc.user.security.UserAuthenticationException;
 import org.apache.drill.exec.server.BootStrapContext;
+import org.apache.drill.exec.ssl.SSLConfigBuilder;
 import org.apache.drill.exec.work.user.UserWorker;
 import org.apache.hadoop.security.HadoopKerberosName;
+import org.apache.hadoop.security.ssl.SSLFactory;
 import org.slf4j.Logger;
 
 import com.google.protobuf.MessageLite;
@@ -71,6 +79,8 @@ public class UserServer extends BasicServer<RpcType, BitToUserConnection> {
   private static final String SERVER_NAME = "Apache Drill Server";
 
   private final UserConnectionConfig config;
+  private final SSLConfig sslConfig;
+  private Channel sslChannel;
   private final UserWorker userWorker;
 
   public UserServer(BootStrapContext context, BufferAllocator allocator, EventLoopGroup eventLoopGroup,
@@ -79,6 +89,17 @@ public class UserServer extends BasicServer<RpcType, BitToUserConnection> {
         allocator.getAsByteBufAllocator(),
         eventLoopGroup);
     this.config = new UserConnectionConfig(allocator, context, new UserServerRequestHandler(worker));
+    this.sslChannel = null;
+    try {
+      this.sslConfig = new SSLConfigBuilder()
+          .config(context.getConfig())
+          .mode(SSLFactory.Mode.SERVER)
+          .initializeSSLContext(true)
+          .validateKeyStore(true)
+          .build();
+    } catch (DrillException e) {
+      throw new DrillbitStartupException(e.getMessage(), e.getCause());
+    }
     this.userWorker = worker;
 
     // Initialize Singleton instance of UserRpcMetrics.
@@ -86,6 +107,34 @@ public class UserServer extends BasicServer<RpcType, BitToUserConnection> {
   }
 
   @Override
+  protected void setupSSL(ChannelPipeline pipe) {
+
+    SSLEngine sslEngine = sslConfig.createSSLEngine(config.getAllocator(), null, 0);
+    // Add SSL handler into pipeline
+    pipe.addFirst(RpcConstants.SSL_HANDLER, new SslHandler(sslEngine));
+    logger.debug("SSL communication between client and server is enabled.");
+    logger.debug(sslConfig.toString());
+
+  }
+
+  @Override
+  protected boolean isSslEnabled() {
+    return sslConfig.isUserSslEnabled();
+  }
+
+  @Override
+  public void setSslChannel(Channel c) {
+    sslChannel = c;
+  }
+
+  @Override
+  protected void closeSSL(){
+    if(isSslEnabled() && sslChannel != null){
+      sslChannel.close();
+    }
+  }
+
+  @Override
   protected MessageLite getResponseDefaultInstance(int rpcType) throws RpcException {
     // a user server only expects acknowledgments on messages it creates.
     switch (rpcType) {
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/server/rest/WebServer.java b/exec/java-exec/src/main/java/org/apache/drill/exec/server/rest/WebServer.java
index 69f2cab76..e35f5421e 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/server/rest/WebServer.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/server/rest/WebServer.java
@@ -26,12 +26,14 @@ import org.apache.commons.lang3.StringUtils;
 import org.apache.drill.common.exceptions.DrillException;
 import org.apache.drill.common.config.DrillConfig;
 import org.apache.drill.exec.ExecConstants;
-import org.apache.drill.exec.SSLConfig;
+import org.apache.drill.exec.ssl.SSLConfig;
 import org.apache.drill.exec.exception.DrillbitStartupException;
 import org.apache.drill.exec.rpc.security.plain.PlainFactory;
 import org.apache.drill.exec.server.BootStrapContext;
 import org.apache.drill.exec.server.rest.auth.DrillRestLoginService;
+import org.apache.drill.exec.ssl.SSLConfigBuilder;
 import org.apache.drill.exec.work.WorkManager;
+import org.apache.hadoop.security.ssl.SSLFactory;
 import org.bouncycastle.asn1.x500.X500NameBuilder;
 import org.bouncycastle.asn1.x500.style.BCStyle;
 import org.bouncycastle.cert.X509v3CertificateBuilder;
@@ -331,12 +333,18 @@ public class WebServer implements AutoCloseable {
     logger.info("Setting up HTTPS connector for web server");
 
     final SslContextFactory sslContextFactory = new SslContextFactory();
-    SSLConfig ssl = new SSLConfig(config);
+    SSLConfig ssl = new SSLConfigBuilder()
+        .config(config)
+        .mode(SSLFactory.Mode.SERVER)
+        .initializeSSLContext(false)
+        .validateKeyStore(true)
+        .build();
     if(ssl.isSslValid()){
       logger.info("Using configured SSL settings for web server");
 
       sslContextFactory.setKeyStorePath(ssl.getKeyStorePath());
       sslContextFactory.setKeyStorePassword(ssl.getKeyStorePassword());
+      sslContextFactory.setKeyManagerPassword(ssl.getKeyPassword());
       if(ssl.hasTrustStorePath()){
         sslContextFactory.setTrustStorePath(ssl.getTrustStorePath());
         if(ssl.hasTrustStorePassword()){
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/ssl/SSLConfig.java b/exec/java-exec/src/main/java/org/apache/drill/exec/ssl/SSLConfig.java
new file mode 100644
index 000000000..98a8c8d4f
--- /dev/null
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/ssl/SSLConfig.java
@@ -0,0 +1,265 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.drill.exec.ssl;
+
+import io.netty.handler.ssl.SslContext;
+import io.netty.handler.ssl.SslProvider;
+import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
+import org.apache.drill.common.exceptions.DrillException;
+import org.apache.drill.exec.memory.BufferAllocator;
+import org.apache.hadoop.security.ssl.SSLFactory;
+
+import javax.net.ssl.KeyManagerFactory;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLEngine;
+import javax.net.ssl.TrustManagerFactory;
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.security.KeyStore;
+
+public abstract class SSLConfig {
+
+  private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(SSLConfig.class);
+
+  public static final String DEFAULT_SSL_PROVIDER = "JDK"; // JDK or OPENSSL
+  public static final String DEFAULT_SSL_PROTOCOL = "TLSv1.2";
+  public static final int DEFAULT_SSL_HANDSHAKE_TIMEOUT_MS = 10 * 1000; // 10 seconds
+
+  // Either the Netty SSL context or the JDK SSL context will be initialized
+  // The JDK SSL context is use iff the useSystemTrustStore setting is enabled.
+  protected SslContext nettySslContext;
+  protected SSLContext jdkSSlContext;
+
+  private static final boolean isWindows = System.getProperty("os.name").toLowerCase().indexOf("win") >= 0;
+  private static final boolean isMacOs = System.getProperty("os.name").toLowerCase().indexOf("mac") >= 0;
+
+  public static final String HADOOP_SSL_CONF_TPL_KEY = "hadoop.ssl.{0}.conf";
+  public static final String HADOOP_SSL_KEYSTORE_LOCATION_TPL_KEY = "ssl.{0}.keystore.location";
+  public static final String HADOOP_SSL_KEYSTORE_PASSWORD_TPL_KEY = "ssl.{0}.keystore.password";
+  public static final String HADOOP_SSL_KEYSTORE_TYPE_TPL_KEY = "ssl.{0}.keystore.type";
+  public static final String HADOOP_SSL_KEYSTORE_KEYPASSWORD_TPL_KEY =
+      "ssl.{0}.keystore.keypassword";
+  public static final String HADOOP_SSL_TRUSTSTORE_LOCATION_TPL_KEY = "ssl.{0}.truststore.location";
+  public static final String HADOOP_SSL_TRUSTSTORE_PASSWORD_TPL_KEY = "ssl.{0}.truststore.password";
+  public static final String HADOOP_SSL_TRUSTSTORE_TYPE_TPL_KEY = "ssl.{0}.truststore.type";
+
+  public SSLConfig() {
+  }
+
+  public abstract void validateKeyStore() throws DrillException;
+
+  // We need to use different SSLContext objects depending on what the user has chosen
+  // For most uses we will use the Netty SslContext class. This allows us to use either
+  // the JDK implementation or the OpenSSL implementation. However if the user wants to
+  // use the system trust store, then the only way to access it is via the JDK's
+  // SSLContext class. (See the createSSLEngine method below).
+
+  public abstract SslContext initNettySslContext() throws DrillException;
+
+  public abstract SSLContext initJDKSSLContext() throws DrillException;
+
+  public abstract boolean isUserSslEnabled();
+
+  public abstract boolean isHttpsEnabled();
+
+  public abstract String getKeyStoreType();
+
+  public abstract String getKeyStorePath();
+
+  public abstract String getKeyStorePassword();
+
+  public abstract String getKeyPassword();
+
+  public abstract String getTrustStoreType();
+
+  public abstract boolean hasTrustStorePath();
+
+  public abstract String getTrustStorePath();
+
+  public abstract boolean hasTrustStorePassword();
+
+  public abstract String getTrustStorePassword();
+
+  public abstract String getProtocol();
+
+  public abstract SslProvider getProvider();
+
+  public abstract int getHandshakeTimeout();
+
+  public abstract SSLFactory.Mode getMode();
+
+  public abstract boolean disableHostVerification();
+
+  public abstract boolean disableCertificateVerification();
+
+  public abstract boolean useSystemTrustStore();
+
+  public abstract boolean isSslValid();
+
+  public SslContext getNettySslContext() {
+    return nettySslContext;
+  }
+
+  public TrustManagerFactory initializeTrustManagerFactory() throws DrillException {
+    TrustManagerFactory tmf;
+    KeyStore ts = null;
+    //Support Windows/MacOs system trust store
+    try {
+      String trustStoreType = getTrustStoreType();
+      if ((isWindows || isMacOs) && useSystemTrustStore()) {
+        // This is valid for MS-Windows and MacOs
+        logger.debug("Initializing System truststore.");
+        ts = KeyStore.getInstance(!trustStoreType.isEmpty() ? trustStoreType : KeyStore.getDefaultType());
+        ts.load(null, null);
+      } else if (!getTrustStorePath().isEmpty()) {
+          // if truststore is not provided then we will use the default. Note that the default depends on
+          // the TrustManagerFactory that in turn depends on the Security Provider.
+          // Use null as the truststore which will result in the default truststore being picked up
+          logger.debug("Initializing truststore {}.", getTrustStorePath());
+          ts = KeyStore.getInstance(!trustStoreType.isEmpty() ? trustStoreType : KeyStore.getDefaultType());
+          InputStream tsStream = new FileInputStream(getTrustStorePath());
+          ts.load(tsStream, getTrustStorePassword().toCharArray());
+      } else {
+        logger.debug("Initializing default truststore.");
+      }
+      if (disableCertificateVerification()) {
+        tmf = InsecureTrustManagerFactory.INSTANCE;
+      } else {
+        tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
+      }
+      tmf.init(ts);
+    } catch (Exception e) {
+      // Catch any SSL initialization Exceptions here and abort.
+      throw new DrillException(
+          new StringBuilder()
+              .append("Exception while initializing the truststore: [")
+              .append(e.getMessage())
+              .append("]. ")
+              .toString(), e);
+    }
+    return tmf;
+  }
+
+  public KeyManagerFactory initializeKeyManagerFactory() throws DrillException {
+    KeyManagerFactory kmf;
+    String keyStorePath = getKeyStorePath();
+    String keyStorePassword = getKeyStorePassword();
+    String keyStoreType = getKeyStoreType();
+    try {
+      if (keyStorePath.isEmpty()) {
+        throw new DrillException("No Keystore provided.");
+      }
+      KeyStore ks =
+          KeyStore.getInstance(!keyStoreType.isEmpty() ? keyStoreType : KeyStore.getDefaultType());
+      //initialize the key manager factory
+      // Will throw an exception if the file is not found/accessible.
+      InputStream ksStream = new FileInputStream(keyStorePath);
+      // A key password CANNOT be null or an empty string.
+      if (keyStorePassword.isEmpty()) {
+        throw new DrillException("The Keystore password cannot be empty.");
+      }
+      ks.load(ksStream, keyStorePassword.toCharArray());
+      // Empty Keystore. (Remarkably, it is possible to do this).
+      if (ks.size() == 0) {
+        throw new DrillException("The Keystore has no entries.");
+      }
+      kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
+      kmf.init(ks, getKeyPassword().toCharArray());
+
+    } catch (Exception e) {
+      throw new DrillException(
+          new StringBuilder()
+              .append("Exception while initializing the keystore: [")
+              .append(e.getMessage())
+              .append("]. ")
+              .toString());
+    }
+    return kmf;
+  }
+
+  public void initContext() throws DrillException {
+    if ((isWindows || isMacOs) && useSystemTrustStore()) {
+      initJDKSSLContext();
+      logger.debug("Initialized Windows/MacOs SSL context using JDK.");
+    } else {
+      initNettySslContext();
+      logger.debug("Initialized SSL context.");
+    }
+    return;
+  }
+
+  public SSLEngine createSSLEngine(BufferAllocator allocator, String peerHost, int peerPort) {
+    SSLEngine engine;
+    if ((isWindows || isMacOs) && useSystemTrustStore()) {
+      if (peerHost != null) {
+        engine = jdkSSlContext.createSSLEngine(peerHost, peerPort);
+        logger.debug("Initializing Windows/MacOs SSLEngine with hostname.");
+      } else {
+        engine = jdkSSlContext.createSSLEngine();
+        logger.debug("Initializing Windows/MacOs SSLEngine with no hostname.");
+      }
+    } else {
+      if (peerHost != null) {
+        engine = nettySslContext.newEngine(allocator.getAsByteBufAllocator(), peerHost, peerPort);
+        logger.debug("Initializing SSLEngine with hostname.");
+      } else {
+        engine = nettySslContext.newEngine(allocator.getAsByteBufAllocator());
+        logger.debug("Initializing SSLEngine with no hostname.");
+      }
+    }
+    return engine;
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("SSL is ")
+        .append(isUserSslEnabled()?"":" not ")
+        .append("enabled.\n");
+    sb.append("HTTPS is ")
+        .append(isHttpsEnabled()?"":" not ")
+        .append("enabled.\n");
+    if(isUserSslEnabled() || isHttpsEnabled()) {
+      sb.append("SSL Configuration :")
+          .append("OS:").append(System.getProperty("os.name"))
+          .append("\n\tUsing system trust store: ").append(useSystemTrustStore())
+          .append("\n\tprotocol: ").append(getProtocol())
+          .append("\n\tkeyStoreType: ").append(getKeyStoreType())
+          .append("\n\tkeyStorePath: ").append(getKeyStorePath())
+          .append("\n\tkeyStorePassword: ").append(getPrintablePassword(getKeyStorePassword()))
+          .append("\n\tkeyPassword: ").append(getPrintablePassword(getKeyPassword()))
+          .append("\n\ttrustStoreType: ").append(getTrustStoreType())
+          .append("\n\ttrustStorePath: ").append(getTrustStorePath())
+          .append("\n\ttrustStorePassword: ").append(getPrintablePassword(getTrustStorePassword()))
+          .append("\n\thandshakeTimeout: ").append(getHandshakeTimeout())
+          .append("\n\tdisableHostVerification: ").append(disableHostVerification())
+          .append("\n\tdisableCertificateVerification: ").append(disableCertificateVerification())
+      ;
+    }
+    return sb.toString();
+  }
+
+  private String getPrintablePassword(String password) {
+    StringBuilder sb = new StringBuilder();
+    if(password == null || password.length()<2 ){
+      return password;
+    }
+    sb.append(password.charAt(0)).append("****").append(password.charAt(password.length()-1));
+    return sb.toString();
+  }
+}
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/ssl/SSLConfigBuilder.java b/exec/java-exec/src/main/java/org/apache/drill/exec/ssl/SSLConfigBuilder.java
new file mode 100644
index 000000000..0941960fa
--- /dev/null
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/ssl/SSLConfigBuilder.java
@@ -0,0 +1,94 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.drill.exec.ssl;
+
+import org.apache.drill.common.config.DrillConfig;
+import org.apache.drill.common.exceptions.DrillConfigurationException;
+import org.apache.drill.common.exceptions.DrillException;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.security.ssl.SSLFactory;
+
+import java.util.Properties;
+
+
+public class SSLConfigBuilder {
+
+  private static final org.slf4j.Logger logger =
+      org.slf4j.LoggerFactory.getLogger(org.apache.drill.exec.ssl.SSLConfigBuilder.class);
+
+  private DrillConfig config = null;
+  private Configuration hadoopConfig = null;
+  private Properties properties;
+  private SSLFactory.Mode mode = SSLFactory.Mode.SERVER;
+  private boolean initializeSSLContext = false;
+  private boolean validateKeyStore = false;
+
+  public SSLConfigBuilder() {
+
+  }
+
+  public SSLConfig build() throws DrillException {
+    if (mode == SSLFactory.Mode.SERVER && config == null) {
+      throw new DrillConfigurationException(
+          "Cannot create SSL configuration from null Drill configuration.");
+    }
+    SSLConfig sslConfig;
+    if (mode == SSLFactory.Mode.SERVER) {
+      sslConfig = new SSLConfigServer(config, hadoopConfig);
+    } else {
+      sslConfig = new SSLConfigClient(properties);
+    }
+    if(validateKeyStore){
+      sslConfig.validateKeyStore();
+    }
+    if(initializeSSLContext){
+      sslConfig.initContext();
+    }
+    return sslConfig;
+  }
+
+  public SSLConfigBuilder config(DrillConfig config) {
+    this.config = config;
+    return this;
+  }
+
+  public SSLConfigBuilder hadoopConfig(Configuration hadoopConfig) {
+    this.hadoopConfig = hadoopConfig;
+    return this;
+  }
+
+  public SSLConfigBuilder properties(Properties props) {
+    this.properties = props;
+    return this;
+  }
+
+  public SSLConfigBuilder mode(SSLFactory.Mode mode) {
+    this.mode = mode;
+    return this;
+  }
+
+  public SSLConfigBuilder initializeSSLContext(boolean initializeSSLContext) {
+    this.initializeSSLContext = initializeSSLContext;
+    return this;
+  }
+
+  public SSLConfigBuilder validateKeyStore(boolean validateKeyStore) {
+    this.validateKeyStore = validateKeyStore;
+    return this;
+  }
+}
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/ssl/SSLConfigClient.java b/exec/java-exec/src/main/java/org/apache/drill/exec/ssl/SSLConfigClient.java
new file mode 100644
index 000000000..6a70d436a
--- /dev/null
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/ssl/SSLConfigClient.java
@@ -0,0 +1,273 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.drill.exec.ssl;
+
+import io.netty.handler.ssl.SslContext;
+import io.netty.handler.ssl.SslContextBuilder;
+import io.netty.handler.ssl.SslProvider;
+import org.apache.drill.common.config.DrillConfig;
+import org.apache.drill.common.config.DrillProperties;
+import org.apache.drill.common.exceptions.DrillException;
+import org.apache.drill.exec.memory.BufferAllocator;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.security.ssl.SSLFactory;
+
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLEngine;
+import javax.net.ssl.SSLParameters;
+import javax.net.ssl.TrustManagerFactory;
+import java.util.Properties;
+
+public class SSLConfigClient extends SSLConfig {
+
+  private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(SSLConfigClient.class);
+
+  private final Properties properties;
+  private final boolean userSslEnabled;
+  private final String trustStoreType;
+  private final String trustStorePath;
+  private final String trustStorePassword;
+  private final boolean disableHostVerification;
+  private final boolean disableCertificateVerification;
+  private final boolean useSystemTrustStore;
+  private final String protocol;
+  private final int handshakeTimeout;
+  private final String provider;
+
+  private final String emptyString = new String();
+
+  public SSLConfigClient(Properties properties) throws DrillException {
+    this.properties = properties;
+    userSslEnabled = getBooleanProperty(DrillProperties.ENABLE_TLS);
+    trustStoreType = getStringProperty(DrillProperties.TRUSTSTORE_TYPE, "JKS");
+    trustStorePath = getStringProperty(DrillProperties.TRUSTSTORE_PATH, "");
+    trustStorePassword = getStringProperty(DrillProperties.TRUSTSTORE_PASSWORD, "");
+    disableHostVerification = getBooleanProperty(DrillProperties.DISABLE_HOST_VERIFICATION);
+    disableCertificateVerification = getBooleanProperty(DrillProperties.DISABLE_CERT_VERIFICATION);
+    useSystemTrustStore = getBooleanProperty(DrillProperties.USE_SYSTEM_TRUSTSTORE);
+    protocol = getStringProperty(DrillProperties.TLS_PROTOCOL, DEFAULT_SSL_PROTOCOL);
+    int hsTimeout = getIntProperty(DrillProperties.TLS_HANDSHAKE_TIMEOUT, DEFAULT_SSL_HANDSHAKE_TIMEOUT_MS);
+    if (hsTimeout <= 0) {
+      hsTimeout = DEFAULT_SSL_HANDSHAKE_TIMEOUT_MS;
+    }
+    handshakeTimeout = hsTimeout;
+    provider = getStringProperty(DrillProperties.TLS_PROVIDER, DEFAULT_SSL_PROVIDER);
+  }
+
+  private boolean getBooleanProperty(String propName) {
+    return (properties != null) && (properties.containsKey(propName))
+        && (properties.getProperty(propName).compareToIgnoreCase("true") == 0);
+  }
+
+  private String getStringProperty(String name, String defaultValue) {
+    String value = "";
+    if ( (properties != null) && (properties.containsKey(name))) {
+      value = properties.getProperty(name);
+    }
+    if (value.isEmpty()) {
+      value = defaultValue;
+    }
+    value = value.trim();
+    return value;
+  }
+
+  private int getIntProperty(String name, int defaultValue) {
+    int value = defaultValue;
+    if ( (properties != null) && (properties.containsKey(name))) {
+      value = new Integer(properties.getProperty(name)).intValue();
+    }
+    return value;
+  }
+
+  public void validateKeyStore() throws DrillException {
+
+  }
+
+  @Override
+  public SslContext initNettySslContext() throws DrillException {
+    final SslContext sslCtx;
+
+    if (!userSslEnabled) {
+      return null;
+    }
+
+    TrustManagerFactory tmf;
+    try {
+      tmf = initializeTrustManagerFactory();
+      sslCtx = SslContextBuilder.forClient()
+          .sslProvider(getProvider())
+          .trustManager(tmf)
+          .protocols(protocol)
+          .build();
+    } catch (Exception e) {
+      // Catch any SSL initialization Exceptions here and abort.
+      throw new DrillException(new StringBuilder()
+          .append("SSL is enabled but cannot be initialized due to the following exception: ")
+          .append("[ ")
+          .append(e.getMessage())
+          .append("]. ")
+          .toString());
+    }
+    this.nettySslContext = sslCtx;
+    return sslCtx;
+  }
+
+  @Override
+  public SSLContext initJDKSSLContext() throws DrillException {
+    final SSLContext sslCtx;
+
+    if (!userSslEnabled) {
+      return null;
+    }
+
+    TrustManagerFactory tmf;
+    try {
+      tmf = initializeTrustManagerFactory();
+      sslCtx = SSLContext.getInstance(protocol);
+      sslCtx.init(null, tmf.getTrustManagers(), null);
+    } catch (Exception e) {
+      // Catch any SSL initialization Exceptions here and abort.
+      throw new DrillException(new StringBuilder()
+          .append("SSL is enabled but cannot be initialized due to the following exception: ")
+          .append("[ ")
+          .append(e.getMessage())
+          .append("]. ")
+          .toString());
+    }
+    this.jdkSSlContext = sslCtx;
+    return sslCtx;
+  }
+
+  @Override
+  public SSLEngine createSSLEngine(BufferAllocator allocator, String peerHost, int peerPort) {
+    SSLEngine engine = super.createSSLEngine(allocator, peerHost, peerPort);
+
+    if (!this.disableHostVerification()) {
+      SSLParameters sslParameters = engine.getSSLParameters();
+      // only available since Java 7
+      sslParameters.setEndpointIdentificationAlgorithm("HTTPS");
+      engine.setSSLParameters(sslParameters);
+    }
+
+    engine.setUseClientMode(true);
+
+    try {
+      engine.setEnableSessionCreation(true);
+    } catch (Exception e) {
+      // Openssl implementation may throw this.
+      logger.debug("Session creation not enabled. Exception: {}", e.getMessage());
+    }
+
+    return engine;
+  }
+
+  @Override
+  public boolean isUserSslEnabled() {
+    return userSslEnabled;
+  }
+
+  @Override
+  public boolean isHttpsEnabled() {
+    return false;
+  }
+
+  @Override
+  public String getKeyStoreType() {
+    return emptyString;
+  }
+
+  @Override
+  public String getKeyStorePath() {
+    return emptyString;
+  }
+
+  @Override
+  public String getKeyStorePassword() {
+    return emptyString;
+  }
+
+  @Override
+  public String getKeyPassword() {
+    return emptyString;
+  }
+
+  @Override
+  public String getTrustStoreType() {
+    return trustStoreType;
+  }
+
+  @Override
+  public boolean hasTrustStorePath() {
+    return !trustStorePath.isEmpty();
+  }
+
+  @Override
+  public String getTrustStorePath() {
+    return trustStorePath;
+  }
+
+  @Override
+  public boolean hasTrustStorePassword() {
+    return !trustStorePassword.isEmpty();
+  }
+
+  @Override
+  public String getTrustStorePassword() {
+    return trustStorePassword;
+  }
+
+  @Override
+  public String getProtocol() {
+    return protocol;
+  }
+
+  @Override
+  public SslProvider getProvider() {
+    return provider.equalsIgnoreCase("JDK") ? SslProvider.JDK : SslProvider.OPENSSL;
+  }
+
+  @Override
+  public int getHandshakeTimeout() {
+    return handshakeTimeout;
+  }
+
+  @Override
+  public SSLFactory.Mode getMode() {
+    return SSLFactory.Mode.CLIENT;
+  }
+
+  @Override
+  public boolean disableHostVerification() {
+    return disableHostVerification;
+  }
+
+  @Override
+  public boolean disableCertificateVerification() {
+    return disableCertificateVerification;
+  }
+
+  @Override
+  public boolean useSystemTrustStore() {
+    return useSystemTrustStore;
+  }
+
+  public boolean isSslValid() {
+    return true;
+  }
+
+}
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/ssl/SSLConfigServer.java b/exec/java-exec/src/main/java/org/apache/drill/exec/ssl/SSLConfigServer.java
new file mode 100644
index 000000000..da31d2e7f
--- /dev/null
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/ssl/SSLConfigServer.java
@@ -0,0 +1,330 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.drill.exec.ssl;
+
+import com.google.common.base.Preconditions;
+import io.netty.handler.ssl.SslContext;
+import io.netty.handler.ssl.SslContextBuilder;
+import io.netty.handler.ssl.SslProvider;
+import org.apache.drill.common.config.DrillConfig;
+import org.apache.drill.common.exceptions.DrillException;
+import org.apache.drill.exec.ExecConstants;
+import org.apache.drill.exec.memory.BufferAllocator;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.security.ssl.SSLFactory;
+
+import javax.net.ssl.KeyManagerFactory;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLEngine;
+import javax.net.ssl.TrustManagerFactory;
+import java.text.MessageFormat;
+
+public class SSLConfigServer extends SSLConfig {
+
+  private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(SSLConfigServer.class);
+
+  private final DrillConfig config;
+  private final Configuration hadoopConfig;
+  private final boolean userSslEnabled;
+  private final boolean httpsEnabled;
+  private final String keyStoreType;
+  private final String keyStorePath;
+  private final String keyStorePassword;
+  private final String keyPassword;
+  private final String trustStoreType;
+  private final String trustStorePath;
+  private final String trustStorePassword;
+  private final String protocol;
+  private final String provider;
+
+  public SSLConfigServer(DrillConfig config, Configuration hadoopConfig) throws DrillException {
+    this.config = config;
+    SSLFactory.Mode mode = SSLFactory.Mode.SERVER;
+    httpsEnabled =
+        config.hasPath(ExecConstants.HTTP_ENABLE_SSL) && config.getBoolean(ExecConstants.HTTP_ENABLE_SSL);
+    // For testing we will mock up a hadoop configuration, however for regular use, we find the actual hadoop config.
+    boolean enableHadoopConfig = config.getBoolean(ExecConstants.SSL_USE_HADOOP_CONF);
+    if (enableHadoopConfig) {
+      if (hadoopConfig == null) {
+        this.hadoopConfig = new Configuration(); // get hadoop configuration
+      } else {
+        this.hadoopConfig = hadoopConfig;
+      }
+      String hadoopSSLConfigFile =
+          this.hadoopConfig.get(resolveHadoopPropertyName(HADOOP_SSL_CONF_TPL_KEY, getMode()));
+      logger.debug("Using Hadoop configuration for SSL");
+      logger.debug("Hadoop SSL configuration file: {}", hadoopSSLConfigFile);
+      this.hadoopConfig.addResource(hadoopSSLConfigFile);
+    } else {
+      this.hadoopConfig = null;
+    }
+    userSslEnabled =
+        config.hasPath(ExecConstants.USER_SSL_ENABLED) && config.getBoolean(ExecConstants.USER_SSL_ENABLED);
+    trustStoreType = getConfigParam(ExecConstants.SSL_TRUSTSTORE_TYPE,
+        resolveHadoopPropertyName(HADOOP_SSL_TRUSTSTORE_TYPE_TPL_KEY, mode));
+    trustStorePath = getConfigParam(ExecConstants.SSL_TRUSTSTORE_PATH,
+        resolveHadoopPropertyName(HADOOP_SSL_TRUSTSTORE_LOCATION_TPL_KEY, mode));
+    trustStorePassword = getConfigParam(ExecConstants.SSL_TRUSTSTORE_PASSWORD,
+        resolveHadoopPropertyName(HADOOP_SSL_TRUSTSTORE_PASSWORD_TPL_KEY, mode));
+    keyStoreType = getConfigParam(ExecConstants.SSL_KEYSTORE_TYPE,
+        resolveHadoopPropertyName(HADOOP_SSL_KEYSTORE_TYPE_TPL_KEY, mode));
+    keyStorePath = getConfigParam(ExecConstants.SSL_KEYSTORE_PATH,
+        resolveHadoopPropertyName(HADOOP_SSL_KEYSTORE_LOCATION_TPL_KEY, mode));
+    keyStorePassword = getConfigParam(ExecConstants.SSL_KEYSTORE_PASSWORD,
+        resolveHadoopPropertyName(HADOOP_SSL_KEYSTORE_PASSWORD_TPL_KEY, mode));
+    // if no keypassword specified, use keystore password
+    String keyPass = getConfigParam(ExecConstants.SSL_KEY_PASSWORD,
+        resolveHadoopPropertyName(HADOOP_SSL_KEYSTORE_KEYPASSWORD_TPL_KEY, mode));
+    keyPassword = keyPass.isEmpty() ? keyStorePassword : keyPass;
+    protocol = getConfigParamWithDefault(ExecConstants.SSL_PROTOCOL, DEFAULT_SSL_PROTOCOL);
+    provider = getConfigParamWithDefault(ExecConstants.SSL_PROVIDER, DEFAULT_SSL_PROVIDER);
+  }
+
+  public void validateKeyStore() throws DrillException {
+    //HTTPS validates the keystore is not empty. User Server SSL context initialization also validates keystore, but
+    // much more strictly. User Client context initialization does not validate keystore.
+    /*If keystorePath or keystorePassword is provided in the configuration file use that*/
+    if ((isUserSslEnabled() || isHttpsEnabled())) {
+      if (!keyStorePath.isEmpty() || !keyStorePassword.isEmpty()) {
+        if (keyStorePath.isEmpty()) {
+          throw new DrillException(
+              " *.ssl.keyStorePath in the configuration file is empty, but *.ssl.keyStorePassword is set");
+        } else if (keyStorePassword.isEmpty()) {
+          throw new DrillException(
+              " *.ssl.keyStorePassword in the configuration file is empty, but *.ssl.keyStorePath is set ");
+        }
+      }
+    }
+  }
+
+  @Override
+  public SslContext initNettySslContext() throws DrillException {
+    final SslContext sslCtx;
+
+    if (!userSslEnabled) {
+      return null;
+    }
+
+    KeyManagerFactory kmf;
+    TrustManagerFactory tmf;
+    try {
+      if (keyStorePath.isEmpty()) {
+        throw new DrillException("No Keystore provided.");
+      }
+      kmf = initializeKeyManagerFactory();
+      tmf = initializeTrustManagerFactory();
+      sslCtx = SslContextBuilder.forServer(kmf)
+          .trustManager(tmf)
+          .protocols(protocol)
+          .sslProvider(getProvider())
+          .build(); // Will throw an exception if the key password is not correct
+    } catch (Exception e) {
+      // Catch any SSL initialization Exceptions here and abort.
+      throw new DrillException(new StringBuilder()
+          .append("SSL is enabled but cannot be initialized - ")
+          .append("[ ")
+          .append(e.getMessage())
+          .append("]. ")
+          .toString());
+    }
+    this.nettySslContext = sslCtx;
+    return sslCtx;
+  }
+
+  @Override
+  public SSLContext initJDKSSLContext() throws DrillException {
+    final SSLContext sslCtx;
+
+    if (!userSslEnabled) {
+      return null;
+    }
+
+    KeyManagerFactory kmf;
+    TrustManagerFactory tmf;
+    try {
+      if (keyStorePath.isEmpty()) {
+        throw new DrillException("No Keystore provided.");
+      }
+      kmf = initializeKeyManagerFactory();
+      tmf = initializeTrustManagerFactory();
+      sslCtx = SSLContext.getInstance(protocol);
+      sslCtx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
+    } catch (Exception e) {
+      // Catch any SSL initialization Exceptions here and abort.
+      throw new DrillException(
+          new StringBuilder().append("SSL is enabled but cannot be initialized - ")
+              .append("[ ")
+              .append(e.getMessage())
+              .append("]. ")
+              .toString());
+    }
+    this.jdkSSlContext = sslCtx;
+    return sslCtx;
+  }
+
+  @Override
+  public SSLEngine createSSLEngine(BufferAllocator allocator, String peerHost, int peerPort) {
+    SSLEngine engine = super.createSSLEngine(allocator, peerHost, peerPort);
+
+    engine.setUseClientMode(false);
+
+    // No need for client side authentication (HTTPS like behaviour)
+    engine.setNeedClientAuth(false);
+
+    try {
+      engine.setEnableSessionCreation(true);
+    } catch (Exception e) {
+      // Openssl implementation may throw this.
+      logger.debug("Session creation not enabled. Exception: {}", e.getMessage());
+    }
+
+    return engine;
+  }
+
+  private String getConfigParam(String name, String hadoopName) {
+    String value = "";
+    if (hadoopConfig != null) {
+      value = getHadoopConfigParam(hadoopName);
+    }
+    if (value.isEmpty() && config.hasPath(name)) {
+      value = config.getString(name);
+    }
+    value = value.trim();
+    return value;
+  }
+
+  private String getHadoopConfigParam(String name) {
+    Preconditions.checkArgument(this.hadoopConfig != null);
+    String value = hadoopConfig.get(name, "");
+    value = value.trim();
+    return value;
+  }
+
+  private String getConfigParamWithDefault(String name, String defaultValue) {
+    String value = "";
+    if (config.hasPath(name)) {
+      value = config.getString(name);
+    }
+    if (value.isEmpty()) {
+      value = defaultValue;
+    }
+    value = value.trim();
+    return value;
+  }
+
+  private String resolveHadoopPropertyName(String nameTemplate, SSLFactory.Mode mode) {
+    return MessageFormat.format(nameTemplate, mode.toString().toLowerCase());
+  }
+
+
+
+  @Override
+  public boolean isUserSslEnabled() {
+    return userSslEnabled;
+  }
+
+  @Override
+  public boolean isHttpsEnabled() {
+    return httpsEnabled;
+  }
+
+  @Override
+  public String getKeyStoreType() {
+    return keyStoreType;
+  }
+
+  @Override
+  public String getKeyStorePath() {
+    return keyStorePath;
+  }
+
+  @Override
+  public String getKeyStorePassword() {
+    return keyStorePassword;
+  }
+
+  @Override
+  public String getKeyPassword() {
+    return keyPassword;
+  }
+
+  @Override
+  public String getTrustStoreType() {
+    return trustStoreType;
+  }
+
+  @Override
+  public boolean hasTrustStorePath() {
+    return !trustStorePath.isEmpty();
+  }
+
+  @Override
+  public String getTrustStorePath() {
+    return trustStorePath;
+  }
+
+  @Override
+  public boolean hasTrustStorePassword() {
+    return !trustStorePassword.isEmpty();
+  }
+
+  @Override
+  public String getTrustStorePassword() {
+    return trustStorePassword;
+  }
+
+  @Override
+  public String getProtocol() {
+    return protocol;
+  }
+
+  @Override
+  public SslProvider getProvider() {
+    return provider.equalsIgnoreCase("JDK") ? SslProvider.JDK : SslProvider.OPENSSL;
+  }
+
+  @Override
+  public int getHandshakeTimeout() {
+    return 0;
+  }
+
+  @Override
+  public SSLFactory.Mode getMode() {
+    return SSLFactory.Mode.SERVER;
+  }
+
+  @Override
+  public boolean disableHostVerification() {
+    return false;
+  }
+
+  @Override
+  public boolean disableCertificateVerification() {
+    return false;
+  }
+
+  @Override
+  public boolean useSystemTrustStore() {
+    return false; // Client only, notsupported by the server
+  }
+
+  public boolean isSslValid() {
+    return !keyStorePath.isEmpty() && !keyStorePassword.isEmpty();
+  }
+
+}