/**
* 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.cxf.fediz.cxf.web;
import java.io.IOException;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.UnsupportedCallbackException;
import org.w3c.dom.Element;
import org.apache.cxf.fediz.core.SecurityTokenThreadLocal;
import org.apache.cxf.ws.security.trust.delegation.DelegationCallback;
import org.apache.ws.security.util.DOM2Writer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This CallbackHandler implementation obtains the security token from
* the thread local storage to be used as the delegation token.
*/
public class ThreadLocalCallbackHandler implements CallbackHandler {
private static final Logger LOG = LoggerFactory.getLogger(ThreadLocalCallbackHandler.class);
public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
for (int i = 0; i < callbacks.length; i++) {
if (callbacks[i] instanceof DelegationCallback) {
DelegationCallback callback = (DelegationCallback) callbacks[i];
Element token = SecurityTokenThreadLocal.getToken();
if (token == null) {
LOG.error("Security token not cached in thread local storage. Check configuration");
} else {
if (LOG.isDebugEnabled()) {
LOG.debug("******************** TOKEN ********************");
LOG.debug(DOM2Writer.nodeToString(token));
LOG.debug("****************** END TOKEN *******************");
}
callback.setToken(token);
}
} else {
throw new UnsupportedCallbackException(callbacks[i], "Unrecognized Callback");
}
}
}
}