net.buffalo.service.interceptor.AllowOriginalHostOnlyInterceptor.java Source code

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Here is the source code for net.buffalo.service.interceptor.AllowOriginalHostOnlyInterceptor.java

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/*
 * Copyright 2002-2004 the original author or authors.
 * 
 * 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.
 *
 * $Id$
 */
package net.buffalo.service.interceptor;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;

import net.buffalo.request.RequestContext;
import net.buffalo.service.ServiceInvocationException;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class AllowOriginalHostOnlyInterceptor implements MethodInterceptor {

    private static final Log LOG = LogFactory.getLog(AllowOriginalHostOnlyInterceptor.class);

    public Object invoke(MethodInvocation method) throws Throwable {

        HttpServletRequest request = RequestContext.getContext().getHttpRequest();

        Cookie[] cookies = request.getCookies();

        if (cookies == null || cookies.length <= 0) {
            LOG.warn("Some rantankerous user invoke this service, refused. " + method.getClass());
            throw new ServiceInvocationException("Permission error!");
        }

        return method.proceed();
    }
}