/*
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* Copyright [2020-2030] [https://www.stylefeng.cn]
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Guns采用APACHE LICENSE 2.0开源协议,您在使用过程中,需要注意以下几点:
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*
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* 1.请不要删除和修改根目录下的LICENSE文件。
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* 2.请不要删除和修改Guns源码头部的版权声明。
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* 3.请保留源码和相关描述文件的项目出处,作者声明等。
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* 4.分发源码时候,请注明软件出处 https://gitee.com/stylefeng/guns
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* 5.在修改包名,模块名称,项目代码等时,请注明软件出处 https://gitee.com/stylefeng/guns
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* 6.若您的项目无法满足以上几点,可申请商业授权
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*/
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package cn.stylefeng.roses.kernel.security.xss;
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import cn.hutool.core.util.ObjectUtil;
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import cn.stylefeng.roses.kernel.security.xss.prop.XssProperties;
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import org.springframework.util.AntPathMatcher;
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import javax.servlet.*;
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import javax.servlet.http.HttpServletRequest;
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import java.io.IOException;
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/**
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* XSS过滤器,使用 XssHttpServletRequestWrapper 将 HttpServletRequest 对象进行包装
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* <p>
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* 用于进行param传参方式的参数过滤掉危险标志
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*
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* @author fengshuonan
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* @date 2021/1/13 22:45
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*/
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public class XssFilter implements Filter {
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public static final String FILTER_NAME = "GUNS_XSS_FILTER";
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private final XssProperties xssProperties;
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public XssFilter(XssProperties xssProperties) {
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this.xssProperties = xssProperties;
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}
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@Override
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public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
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HttpServletRequest httpServletRequest = (HttpServletRequest) request;
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String servletPath = httpServletRequest.getServletPath();
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String contextPath = httpServletRequest.getContextPath();
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AntPathMatcher antPathMatcher = new AntPathMatcher();
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// 如果当前servlet path排除在外,则放行
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if (xssProperties != null &&
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ObjectUtil.isNotEmpty(xssProperties.getUrlExclusion())) {
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for (String exclusion : xssProperties.getUrlExclusion()) {
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if (antPathMatcher.match(contextPath + exclusion, contextPath + servletPath)) {
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chain.doFilter(request, response);
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return;
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}
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}
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}
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// 对原有request对象进行包装
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chain.doFilter(new XssHttpServletRequestWrapper((HttpServletRequest) request), response);
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}
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}
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