/**
* 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.crypto.internal;
import java.util.Date;
import org.restlet.Request;
import org.restlet.data.ChallengeResponse;
import org.restlet.data.ChallengeScheme;
import org.restlet.data.Form;
import org.restlet.data.Reference;
import org.restlet.engine.security.AuthenticatorHelper;
import org.restlet.engine.util.DateUtils;
/**
* Implements the HTTP authentication for the Amazon Web Services.
*
* @author Jerome Louvel
*/
public class HttpAwsQueryHelper extends AuthenticatorHelper {
/**
* Constructor.
*/
public HttpAwsQueryHelper() {
super(ChallengeScheme.HTTP_AWS_QUERY, true, false);
}
@Override
public Reference updateReference(Reference resourceRef,
ChallengeResponse challengeResponse, Request request) {
Reference result = resourceRef;
Form query = result.getQueryAsForm();
if (query.getFirst("Action") != null) {
query.add("AWSAccessKeyId", new String(request
.getChallengeResponse().getIdentifier()));
query.add("SignatureMethod", "HmacSHA256");
query.add("SignatureVersion", "2");
query.add("Version", "2009-04-15");
String df = DateUtils.format(new Date(),
DateUtils.FORMAT_ISO_8601.get(0));
query.add("Timestamp", df);
// Compute then add the signature parameter
String signature = AwsUtils.getQuerySignature(request.getMethod(),
request.getResourceRef(), query, request
.getChallengeResponse().getSecret());
query.add("Signature", signature);
result = new Reference(resourceRef);
result.setQuery(query.getQueryString());
}
return result;
}
}