Added EncryptionLevel.REQUIRED_NON_LOCAL

driver/src/main/java/org/neo4j/driver/internal/InternalDriver.java

@@ -29,6 +29,10 @@
 import org.neo4j.driver.v1.exceptions.ClientException;
 import org.neo4j.driver.v1.exceptions.Neo4jException;
 
+import static org.neo4j.driver.internal.util.AddressUtil.isLocalHost;
+import static org.neo4j.driver.v1.Config.EncryptionLevel.REQUIRED;
+import static org.neo4j.driver.v1.Config.EncryptionLevel.REQUIRED_NON_LOCAL;
+
 public class InternalDriver implements Driver
 {
     private final ConnectionPool connections;
@@ -42,6 +46,15 @@ public InternalDriver( URI url, AuthToken authToken, Config config )
         this.config = config;
     }
 
+    @Override
+    public boolean isEncrypted()
+    {
+
+        Config.EncryptionLevel encryptionLevel = config.encryptionLevel();
+        return encryptionLevel.equals( REQUIRED ) ||
+                ( encryptionLevel.equals( REQUIRED_NON_LOCAL ) && !isLocalHost( url.getHost() ) );
+    }
+
     /**
      * Establish a session
      * @return a session that could be used to run {@link Session#run(String) a statement} or
@@ -63,7 +76,7 @@ public void close() throws Neo4jException
         {
             connections.close();
         }
-        catch( Exception e )
+        catch ( Exception e )
         {
             throw new ClientException( "Failed to close driver.", e );
         }

driver/src/main/java/org/neo4j/driver/internal/connector/socket/SocketClient.java

@@ -37,6 +37,7 @@
 import static java.nio.ByteOrder.BIG_ENDIAN;
 import static org.neo4j.driver.internal.connector.socket.SocketUtils.blockingRead;
 import static org.neo4j.driver.internal.connector.socket.SocketUtils.blockingWrite;
+import static org.neo4j.driver.internal.util.AddressUtil.isLocalHost;
 
 public class SocketClient
 {
@@ -235,6 +236,18 @@ public static ByteChannel create( String host, int port, Config config, Logger l
                 channel = new TLSSocketChannel( host, port, soChannel, logger, config.trustStrategy() );
                 break;
             }
+            case REQUIRED_NON_LOCAL:
+            {
+                if ( isLocalHost( host ) )
+                {
+                    channel = soChannel;
+                }
+                else
+                {
+                    channel = new TLSSocketChannel( host, port, soChannel, logger, config.trustStrategy() );
+                }
+                break;
+            }
             case NONE:
             {
                 channel = soChannel;

driver/src/main/java/org/neo4j/driver/internal/util/AddressUtil.java

@@ -0,0 +1,47 @@
+/**
+ * Copyright (c) 2002-2016 "Neo Technology,"
+ * Network Engine for Objects in Lund AB [http://neotechnology.com]
+ *
+ * This file is part of Neo4j.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.neo4j.driver.internal.util;
+
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+
+public class AddressUtil
+{
+    /**
+     * Return true if the host provided matches "localhost" or "127.x.x.x".
+     *
+     * @param host the host name to test
+     * @return true if localhost, false otherwise
+     */
+    public static boolean isLocalHost( String host )
+    {
+        try
+        {
+            // confirmed to work as desired with both "localhost" and "127.x.x.x"
+            return InetAddress.getByName( host ).isLoopbackAddress();
+        }
+        catch ( UnknownHostException e )
+        {
+            // if it's unknown, it's not local so we can safely return false
+            return false;
+        }
+    }
+
+}

driver/src/main/java/org/neo4j/driver/v1/Config.java

@@ -67,7 +67,7 @@ private Config( ConfigBuilder builder )
         this.connectionPoolSize = builder.connectionPoolSize;
         this.idleTimeBeforeConnectionTest = builder.idleTimeBeforeConnectionTest;
 
-        this.encryptionLevel = builder.encruptionLevel;
+        this.encryptionLevel = builder.encryptionLevel;
         this.trustStrategy = builder.trustStrategy;
     }
 
@@ -140,7 +140,7 @@ public static class ConfigBuilder
         private Logging logging = new JULogging( Level.INFO );
         private int connectionPoolSize = 50;
         private long idleTimeBeforeConnectionTest = 200;
-        private EncryptionLevel encruptionLevel = EncryptionLevel.REQUIRED;
+        private EncryptionLevel encryptionLevel = EncryptionLevel.REQUIRED_NON_LOCAL;
         private TrustStrategy trustStrategy = trustOnFirstUse(
                 new File( getProperty( "user.home" ), ".neo4j" + File.separator + "known_hosts" ) );
 
@@ -208,7 +208,7 @@ public ConfigBuilder withSessionLivenessCheckTimeout( long timeout )
          */
         public ConfigBuilder withEncryptionLevel( EncryptionLevel level )
         {
-            this.encruptionLevel = level;
+            this.encryptionLevel = level;
             return this;
         }
 
@@ -250,6 +250,10 @@ public enum EncryptionLevel
         /** With this level, the driver will only connect to the server if it can do it without encryption. */
         NONE,
 
+        /** With this level, the driver will only connect to the server without encryption if local but with
+         * encryption otherwise. */
+        REQUIRED_NON_LOCAL,
+
         /** With this level, the driver will only connect to the server it if can do it with encryption. */
         REQUIRED
     }

driver/src/main/java/org/neo4j/driver/v1/Driver.java

@@ -20,6 +20,7 @@
 
 import java.net.URI;
 
+import org.neo4j.driver.v1.Config.EncryptionLevel;
 import org.neo4j.driver.v1.exceptions.Neo4jException;
 
 /**
@@ -71,6 +72,11 @@
  */
 public interface Driver extends AutoCloseable
 {
+    /**
+     * Return a flag to indicate whether or not encryption is used for this driver.
+     */
+    boolean isEncrypted();
+
     /**
      * Establish a session
      * @return a session that could be used to run {@link Session#run(String) a statement} or

driver/src/test/java/org/neo4j/driver/internal/util/AddressUtilTest.java

@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) 2002-2016 "Neo Technology,"
+ * Network Engine for Objects in Lund AB [http://neotechnology.com]
+ *
+ * This file is part of Neo4j.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.neo4j.driver.internal.util;
+
+import org.junit.Test;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.junit.Assert.*;
+import static org.neo4j.driver.internal.util.AddressUtil.isLocalHost;
+
+public class AddressUtilTest
+{
+    @Test
+    public void shouldWorkForVariantsOfLocalHost() throws Exception
+    {
+        assertThat( isLocalHost( "localhost" ), equalTo( true ) );
+        assertThat( isLocalHost( "LocalHost" ), equalTo( true ) );
+        assertThat( isLocalHost( "LOCALHOST" ), equalTo( true ) );
+        assertThat( isLocalHost( "127.0.0.1" ), equalTo( true ) );
+        assertThat( isLocalHost( "127.5.6.7" ), equalTo( true ) );
+        assertThat( isLocalHost( "x" ), equalTo( false ) );
+    }
+
+}

driver/src/test/java/org/neo4j/driver/v1/integration/EncryptionIT.java

@@ -0,0 +1,107 @@
+/**
+ * Copyright (c) 2002-2016 "Neo Technology,"
+ * Network Engine for Objects in Lund AB [http://neotechnology.com]
+ *
+ * This file is part of Neo4j.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.neo4j.driver.v1.integration;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.neo4j.driver.v1.*;
+import org.neo4j.driver.v1.util.TestNeo4j;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.neo4j.driver.internal.util.AddressUtil.isLocalHost;
+import static org.neo4j.driver.v1.Config.EncryptionLevel.NONE;
+import static org.neo4j.driver.v1.Config.EncryptionLevel.REQUIRED;
+import static org.neo4j.driver.v1.Config.EncryptionLevel.REQUIRED_NON_LOCAL;
+
+public class EncryptionIT
+{
+    @Rule
+    public TestNeo4j neo4j = new TestNeo4j();
+
+    @Test
+    public void shouldOperateWithNoEncryption() throws Exception
+    {
+        // Given
+        Driver driver = GraphDatabase.driver( neo4j.address(), Config.build().withEncryptionLevel( NONE ).toConfig() );
+
+        // Then
+        assertThat( driver.isEncrypted(), equalTo( false ) );
+
+        // When
+        Session session = driver.session();
+        StatementResult result = session.run( "RETURN 1" );
+
+        // Then
+        Record record = result.next();
+        int value = record.get( 0 ).asInt();
+        assertThat( value, equalTo( 1 ) );
+
+        // Finally
+        session.close();
+        driver.close();
+    }
+
+    @Test
+    public void shouldOperateWithRequiredNonLocalEncryption() throws Exception
+    {
+        // Given
+        Driver driver = GraphDatabase.driver( neo4j.address(), Config.build().withEncryptionLevel( REQUIRED_NON_LOCAL ).toConfig() );
+
+        // Then
+        assertThat( driver.isEncrypted(), equalTo( !isLocalHost( neo4j.host() ) ) );
+
+        // When
+        Session session = driver.session();
+        StatementResult result = session.run( "RETURN 1" );
+
+        // Then
+        Record record = result.next();
+        int value = record.get( 0 ).asInt();
+        assertThat( value, equalTo( 1 ) );
+
+        // Finally
+        session.close();
+        driver.close();
+    }
+
+    @Test
+    public void shouldOperateWithRequiredEncryption() throws Exception
+    {
+        // Given
+        Driver driver = GraphDatabase.driver( neo4j.address(), Config.build().withEncryptionLevel( REQUIRED ).toConfig() );
+
+        // Then
+        assertThat( driver.isEncrypted(), equalTo( true ) );
+
+        // When
+        Session session = driver.session();
+        StatementResult result = session.run( "RETURN 1" );
+
+        // Then
+        Record record = result.next();
+        int value = record.get( 0 ).asInt();
+        assertThat( value, equalTo( 1 ) );
+
+        // Finally
+        session.close();
+        driver.close();
+    }
+
+}

driver/src/test/java/org/neo4j/driver/v1/util/Neo4jRunner.java

@@ -45,7 +45,6 @@ public class Neo4jRunner
 
     public static final String NEORUN_START_ARGS = System.getProperty( "neorun.start.args" );
     public static final String DEFAULT_URL = "bolt://localhost:7687";
-    private static final Config TEST_CONFIG = Config.build().withEncryptionLevel( Config.EncryptionLevel.NONE ).toConfig();
     private Driver driver;
     private Neo4jSettings currentSettings = Neo4jSettings.DEFAULT_SETTINGS;
 
@@ -106,7 +105,7 @@ private void startNeo4j() throws IOException
         {
             throw new IOException( "Failed to start neo4j server." );
         }
-        driver = GraphDatabase.driver( DEFAULT_URL, TEST_CONFIG );
+        driver = GraphDatabase.driver( DEFAULT_URL /* default encryption REQUIRED_NON_LOCAL */ );
     }
 
     public synchronized void stopNeo4j() throws IOException

driver/src/test/java/org/neo4j/driver/v1/util/TestNeo4j.java

@@ -25,6 +25,7 @@
 import java.io.File;
 import java.io.IOException;
 import java.io.PrintWriter;
+import java.net.URI;
 import java.net.URL;
 
 import org.neo4j.driver.v1.Driver;
@@ -95,6 +96,11 @@ public String address()
         return Neo4jRunner.DEFAULT_URL;
     }
 
+    public String host()
+    {
+        return URI.create( Neo4jRunner.DEFAULT_URL ).getHost();
+    }
+
     static void clearDatabaseContents( Session session, String reason )
     {
         Neo4jRunner.debug( "Clearing database contents for: %s", reason );