/*
* 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.sling.jcr.jackrabbit.server.impl.security;
import org.apache.jackrabbit.core.security.authentication.CredentialsCallback;
import org.apache.jackrabbit.core.security.authentication.ImpersonationCallback;
import java.io.IOException;
import javax.jcr.Credentials;
import javax.security.auth.Subject;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
/**
*
*/
public class CallbackHandlerWrapper implements CallbackHandler {
private CallbackHandler callbackHandler;
/**
* @param callbackHandler
*/
public CallbackHandlerWrapper(Subject subject,
CallbackHandler callbackHandler) {
this.callbackHandler = callbackHandler;
}
/**
* {@inheritDoc}
*
* @see javax.security.auth.callback.CallbackHandler#handle(javax.security.auth.callback.Callback[])
*/
public void handle(Callback[] callbacks) throws IOException,
UnsupportedCallbackException {
for (Callback cb : callbacks) {
if (cb instanceof NameCallback) {
Credentials creds = getCredentials();
NameCallback nameCallback = (NameCallback) cb;
if (creds instanceof TrustedCredentials) {
nameCallback.setName(((TrustedCredentials) creds)
.getPrincipal().getName());
return;
}
} else if (cb instanceof ImpersonationCallback) {
Credentials creds = getCredentials();
ImpersonationCallback impersonationCallback = (ImpersonationCallback) cb;
if (creds instanceof TrustedCredentials) {
impersonationCallback
.setImpersonator(((TrustedCredentials) creds)
.getImpersonator());
return;
}
}
}
if (callbackHandler != null) {
callbackHandler.handle(callbacks);
}
}
/**
* @return
* @throws UnsupportedCallbackException
* @throws IOException
*/
private Credentials getCredentials() throws IOException,
UnsupportedCallbackException {
CredentialsCallback credentialsCallback = new CredentialsCallback();
callbackHandler.handle(new Callback[] { credentialsCallback });
return credentialsCallback.getCredentials();
}
}