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/*
*
* 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;
}
}
}
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