com.ajaxjs.security.wrapper.CookieResponse Maven / Gradle / Ivy

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AJAXJS Web aims to full-stack, not only the server-side framework, but also integrates the front-end library. It's written in HTML5 + Java, a successor to the JVM platform, efficient, secure, stable, cross-platform and many other advantages, but it abandoned the traditional enterprise architecture brought about by the large and bloated, emphasizing the lightweight, and fast, very suitable for the Internet fast application.

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/**
 * Copyright 2015 Sp42 [email protected]
 *
 * 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.ajaxjs.security.wrapper;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;

import com.ajaxjs.security.ListControl;


/**
 * 检查 Cookie 容量大小和是否在白名单中。
 * 
 * @author Frank
 *
 */
public class CookieResponse extends HttpServletResponseWrapper {
	public static ListControl delegate = new ListControl();

	private static final int MAX_COOKIE_SIZE = 4 * 1024;

	private int length = 0;

	public CookieResponse(HttpServletResponse response) {
		super(response);
	}

	@Override
	public void addCookie(Cookie cookie) {
		if (length + cookie.getValue().length() > MAX_COOKIE_SIZE)
			throw new SecurityException("超出 Cookie 允许容量：" + MAX_COOKIE_SIZE);

		if (!delegate.isInWhiteList(cookie.getName()))
			throw new SecurityException("cookie:" + cookie.getName() + " 不在白名单中，添加无效！");
	}
}