org.wildfly.security.auth.callback.SocketAddressQueryCallbackHandler Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.wildfly.security.auth.callback;
import java.io.IOException;
import java.net.SocketAddress;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.UnsupportedCallbackException;
/**
* A callback handler which delegates to another callback handler, passing the local and/or peer socket address to that
* callback handler on its first invocation.
*
* @author David M. Lloyd
*/
public final class SocketAddressQueryCallbackHandler implements CallbackHandler {
private final CallbackHandler delegate;
private final SocketAddress localAddress;
private final SocketAddress peerAddress;
private final AtomicBoolean once = new AtomicBoolean();
/**
* Construct a new instance.
*
* @param delegate the callback handler to delegate to
* @param localAddress the local socket address
* @param peerAddress the peer socket address
*/
public SocketAddressQueryCallbackHandler(final CallbackHandler delegate, final SocketAddress localAddress, final SocketAddress peerAddress) {
this.delegate = delegate;
this.localAddress = localAddress;
this.peerAddress = peerAddress;
}
public void handle(final Callback[] callbacks) throws IOException, UnsupportedCallbackException {
if (localAddress == null && peerAddress == null || ! once.compareAndSet(false, true)) {
delegate.handle(callbacks);
return;
}
final SocketAddressCallback localCallback = localAddress == null ? null : new SocketAddressCallback(localAddress, SocketAddressCallback.Kind.LOCAL);
final SocketAddressCallback peerCallback = peerAddress == null ? null : new SocketAddressCallback(peerAddress, SocketAddressCallback.Kind.PEER);
final Callback[] newCallbacks;
final int length = callbacks.length;
if (localCallback != null && peerCallback != null) {
newCallbacks = new Callback[length + 2];
newCallbacks[0] = localCallback;
newCallbacks[1] = peerCallback;
System.arraycopy(callbacks, 0, newCallbacks, 2, length);
} else if (localCallback != null) {
newCallbacks = new Callback[length + 1];
newCallbacks[0] = localCallback;
System.arraycopy(callbacks, 0, newCallbacks, 1, length);
} else {
// peerCallback != null
newCallbacks = new Callback[length + 1];
newCallbacks[0] = peerCallback;
System.arraycopy(callbacks, 0, newCallbacks, 1, length);
}
try {
delegate.handle(newCallbacks);
} catch (UnsupportedCallbackException e) {
if (e.getCallback() instanceof SocketAddressCallback) {
delegate.handle(callbacks);
return;
}
throw e;
}
}
}