/**
 * 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.oidc.idp.example;

import java.io.IOException;

import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerRequestFilter;
import javax.ws.rs.core.Response;

import org.apache.cxf.configuration.security.AuthorizationPolicy;
import org.apache.cxf.jaxrs.utils.ExceptionUtils;
import org.apache.cxf.jaxrs.utils.JAXRSUtils;
import org.apache.cxf.message.Message;
import org.apache.cxf.rt.security.saml.interceptor.WSS4JBasicAuthValidator;

/**
 * Extends the WSS4J validator as a JAX-RS request filter
 */
public class BasicAuthFilter extends WSS4JBasicAuthValidator implements ContainerRequestFilter {

    public void filter(ContainerRequestContext requestContext) throws IOException {
        Message message = JAXRSUtils.getCurrentMessage();
        AuthorizationPolicy policy = message.get(AuthorizationPolicy.class);

        if (policy == null || policy.getUserName() == null || policy.getPassword() == null) {
            requestContext.abortWith(
                Response.status(401).header("WWW-Authenticate", "Basic realm=\"IdP\"").build());
            return;
        }

        try {
            super.validate(message);
        } catch (Exception ex) {
            throw ExceptionUtils.toInternalServerErrorException(ex, null);
        }
    }

}