1 files changed, 193 insertions, 0 deletions
diff --git a/java/broker-core/src/main/java/org/apache/qpid/server/virtualhostalias/HostNameAliasImpl.java b/java/broker-core/src/main/java/org/apache/qpid/server/virtualhostalias/HostNameAliasImpl.java
new file mode 100644
index 0000000000..9abeac5f31
--- /dev/null
+++ b/java/broker-core/src/main/java/org/apache/qpid/server/virtualhostalias/HostNameAliasImpl.java
@@ -0,0 +1,193 @@
+/*
+ *
+ * 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.qpid.server.virtualhostalias;
+
+import java.net.InetAddress;
+import java.net.InterfaceAddress;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.net.UnknownHostException;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.CopyOnWriteArraySet;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+
+import org.apache.qpid.server.model.Broker;
+import org.apache.qpid.server.model.HostNameAlias;
+import org.apache.qpid.server.model.ManagedObjectFactoryConstructor;
+import org.apache.qpid.server.model.Port;
+import org.apache.qpid.server.model.VirtualHostNode;
+import org.apache.qpid.server.model.port.AmqpPort;
+
+public class HostNameAliasImpl
+        extends AbstractFixedVirtualHostNodeAlias<HostNameAliasImpl>
+        implements HostNameAlias<HostNameAliasImpl>
+{
+
+    private final Set<InetAddress> _localAddresses = new CopyOnWriteArraySet<>();
+    private final Set<String> _localAddressNames = new CopyOnWriteArraySet<>();
+    private final Lock _addressLock = new ReentrantLock();
+    private final AtomicBoolean _addressesComputed = new AtomicBoolean();
+
+
+    @ManagedObjectFactoryConstructor
+    protected HostNameAliasImpl(final Map<String, Object> attributes, final Port port)
+    {
+        super(attributes, port);
+    }
+
+    protected void onOpen()
+    {
+        super.onOpen();
+        Thread thread = new Thread(new NetworkAddressResolver(), "Network Address Resolver");
+        thread.start();
+    }
+
+
+    @Override
+    public VirtualHostNode<?> getVirtualHostNode(final String name)
+    {
+        VirtualHostNode<?> node = null;
+        if(matches(name))
+        {
+            node = getVirtualHostNode();
+            if(node == null)
+            {
+                Broker<?> broker = getPort().getParent(Broker.class);
+                String defaultHostName = broker.getDefaultVirtualHost();
+                for (VirtualHostNode<?> vhn : broker.getVirtualHostNodes())
+                {
+                    if (vhn.getName().equals(defaultHostName))
+                    {
+                        return vhn;
+                    }
+                }
+            }
+
+        }
+        return node;
+    }
+
+    @Override
+    protected boolean matches(final String host)
+    {
+        while(!_addressesComputed.get())
+        {
+            Lock lock = _addressLock;
+            lock.lock();
+            lock.unlock();
+        }
+
+        boolean isNetworkAddress = true;
+        if (!_localAddressNames.contains(host))
+        {
+            try
+            {
+                InetAddress inetAddress = InetAddress.getByName(host);
+                if (!_localAddresses.contains(inetAddress))
+                {
+                    isNetworkAddress = false;
+                }
+                else
+                {
+                    _localAddressNames.add(host);
+                }
+            }
+            catch (UnknownHostException e)
+            {
+                // ignore
+                isNetworkAddress = false;
+            }
+        }
+        return isNetworkAddress;
+
+    }
+
+    private class NetworkAddressResolver implements Runnable
+    {
+        public void run()
+        {
+            _addressesComputed.set(false);
+            Lock lock = _addressLock;
+
+            lock.lock();
+            String bindingAddress = ((AmqpPort<?>)getPort()).getBindingAddress();
+            try
+            {
+                Collection<InetAddress> inetAddresses;
+                if(bindingAddress == null || bindingAddress.trim().equals("") || bindingAddress.trim().equals("*"))
+                {
+                    inetAddresses = getAllInetAddresses();
+                }
+                else
+                {
+                    inetAddresses = Collections.singleton(InetAddress.getByName(bindingAddress));
+                }
+                for (InetAddress address : inetAddresses)
+                {
+                    _localAddresses.add(address);
+                    String hostAddress = address.getHostAddress();
+                    if (hostAddress != null)
+                    {
+                        _localAddressNames.add(hostAddress);
+                    }
+                    String hostName = address.getHostName();
+                    if (hostName != null)
+                    {
+                        _localAddressNames.add(hostName);
+                    }
+                    String canonicalHostName = address.getCanonicalHostName();
+                    if (canonicalHostName != null)
+                    {
+                        _localAddressNames.add(canonicalHostName);
+                    }
+                }
+            }
+            catch (SocketException | UnknownHostException e)
+            {
+                // ignore
+            }
+            finally
+            {
+                _addressesComputed.set(true);
+                lock.unlock();
+            }
+        }
+
+        private Collection<InetAddress> getAllInetAddresses() throws SocketException
+        {
+            Set<InetAddress> addresses = new HashSet<>();
+            for (NetworkInterface networkInterface : Collections.list(NetworkInterface.getNetworkInterfaces()))
+            {
+                for (InterfaceAddress inetAddress : networkInterface.getInterfaceAddresses())
+                {
+                    addresses.add(inetAddress.getAddress());
+                }
+            }
+            return addresses;
+        }
+    }
+}