/**
* 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.ws.security.trust.delegation;
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.Document;
import org.w3c.dom.Node;
import org.apache.cxf.helpers.DOMUtils;
import org.apache.cxf.message.Message;
import org.apache.cxf.rt.security.utils.SecurityUtils;
import org.apache.cxf.ws.security.SecurityConstants;
import org.apache.wss4j.dom.message.token.UsernameToken;
/**
* This CallbackHandler implementation obtains a username via the jaxws property
* "security.username", as defined in SecurityConstants, and creates a wss UsernameToken
* (with no password) to be used as the delegation token.
*/
public class WSSUsernameCallbackHandler implements CallbackHandler {
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];
Message message = callback.getCurrentMessage();
String username =
(String)SecurityUtils.getSecurityPropertyValue(SecurityConstants.USERNAME, message);
if (username != null) {
Node contentNode = message.getContent(Node.class);
Document doc = null;
if (contentNode != null) {
doc = contentNode.getOwnerDocument();
} else {
doc = DOMUtils.createDocument();
}
UsernameToken usernameToken = createWSSEUsernameToken(username, doc);
callback.setToken(usernameToken.getElement());
}
} else {
throw new UnsupportedCallbackException(callbacks[i], "Unrecognized Callback");
}
}
}
private UsernameToken createWSSEUsernameToken(String username, Document doc) {
UsernameToken usernameToken = new UsernameToken(true, doc, null);
usernameToken.setName(username);
usernameToken.addWSUNamespace();
usernameToken.addWSSENamespace();
usernameToken.setID("id-" + username);
return usernameToken;
}
}