/*
 * Copyright 2012 Nodeable Inc
 *
 *    Licensed 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 com.streamreduce.security.filter;

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;

import org.apache.shiro.web.filter.authc.AuthenticatingFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public abstract class NodeableAuthenticatingFilter extends AuthenticatingFilter {

    protected transient Logger logger = LoggerFactory.getLogger(getClass());

    protected abstract String getHeaderParameter(ServletRequest request);

    @Override
    protected boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) {
        try {
            return executeLogin(request, response);
        } catch (Exception e) {
            logger.error(e.getMessage());
        }
        return false;
    }

    @Override
    protected boolean onAccessDenied(ServletRequest request, ServletResponse response) throws Exception {
        HttpServletResponse httpResponse = (HttpServletResponse) response;
        httpResponse.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
        return false;
    }

}