/**
* Copyright 2005-2014 Restlet
*
* The contents of this file are subject to the terms of one of the following
* open source licenses: Apache 2.0 or or EPL 1.0 (the "Licenses"). You can
* select the license that you prefer but you may not use this file except in
* compliance with one of these Licenses.
*
* You can obtain a copy of the Apache 2.0 license at
* http://www.opensource.org/licenses/apache-2.0
*
* You can obtain a copy of the EPL 1.0 license at
* http://www.opensource.org/licenses/eclipse-1.0
*
* See the Licenses for the specific language governing permissions and
* limitations under the Licenses.
*
* Alternatively, you can obtain a royalty free commercial license with less
* limitations, transferable or non-transferable, directly at
* http://restlet.com/products/restlet-framework
*
* Restlet is a registered trademark of Restlet S.A.S.
*/
package org.restlet.ext.jaas;
import java.io.IOException;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import org.restlet.Request;
import org.restlet.Response;
/**
* JAAS callback handler that automatically provides the identifier and secret
* when asked by login modules.
*
* @author Jerome Louvel
*/
public class ChallengeCallbackHandler implements CallbackHandler {
/** The handled request. */
private volatile Request request;
/** The handled response. */
private volatile Response response;
/**
* Constructor.
*
* @param request
* The handled request.
* @param response
* The handled response.
*/
public ChallengeCallbackHandler(Request request, Response response) {
this.request = request;
this.response = response;
}
/**
* Returns the handled request.
*
* @return The handled request.
*/
public Request getRequest() {
return request;
}
/**
* Returns the handled response.
*
* @return The handled response.
*/
public Response getResponse() {
return response;
}
/**
* Handles a callback. The default implementation automatically sets the
* identifier on {@link javax.security.auth.callback.NameCallback} instances
* and the secret on {@link PasswordCallback}.
*
* @param callback
* The callback to handle.
* @throws UnsupportedCallbackException
*/
protected void handle(Callback callback)
throws UnsupportedCallbackException {
// [ifndef android]
if (callback instanceof javax.security.auth.callback.NameCallback) {
javax.security.auth.callback.NameCallback nc = (javax.security.auth.callback.NameCallback) callback;
if (getRequest().getChallengeResponse() != null) {
nc.setName(getRequest().getChallengeResponse().getIdentifier());
}
} else
// [enddef]
if (callback instanceof PasswordCallback) {
PasswordCallback pc = (PasswordCallback) callback;
if (getRequest().getChallengeResponse() != null) {
pc.setPassword(getRequest().getChallengeResponse().getSecret());
}
} else {
throw new UnsupportedCallbackException(callback,
"Unrecognized Callback");
}
}
/**
* Handles the callbacks. The default implementation delegates the handling
* to the {@link #handle(Callback)} method.
*
* @param callbacks
* The callbacks to handle.
*/
public void handle(Callback[] callbacks) throws IOException,
UnsupportedCallbackException {
if (callbacks != null) {
for (Callback callback : callbacks) {
handle(callback);
}
}
}
/**
* Sets the handled request.
*
* @param request
* The handled request.
*/
public void setRequest(Request request) {
this.request = request;
}
/**
* Sets the handled response.
*
* @param response
* The handled response.
*/
public void setResponse(Response response) {
this.response = response;
}
}