/*
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* Copyright (c) 2018-2028, Chill Zhuang All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* Neither the name of the dreamlu.net developer nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* Author: Chill 庄骞 (smallchill@163.com)
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*/
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package org.springblade.core.secure.interceptor;
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import lombok.AllArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springblade.core.secure.auth.AuthFun;
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import org.springblade.core.secure.props.AuthSecure;
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import org.springblade.core.secure.provider.HttpMethod;
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import org.springblade.core.secure.provider.ResponseProvider;
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import org.springblade.core.tool.jackson.JsonUtil;
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import org.springblade.core.tool.utils.WebUtil;
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import org.springframework.expression.EvaluationContext;
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import org.springframework.expression.ExpressionParser;
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import org.springframework.expression.spel.standard.SpelExpressionParser;
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import org.springframework.expression.spel.support.StandardEvaluationContext;
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import org.springframework.lang.NonNull;
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import org.springframework.util.AntPathMatcher;
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import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.util.List;
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/**
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* 自定义授权拦截器校验
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*
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* @author Chill
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*/
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@Slf4j
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@AllArgsConstructor
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public class AuthInterceptor extends HandlerInterceptorAdapter {
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/**
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* 表达式处理
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*/
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private static final ExpressionParser EXPRESSION_PARSER = new SpelExpressionParser();
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private static final EvaluationContext EVALUATION_CONTEXT = new StandardEvaluationContext(new AuthFun());
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private static final AntPathMatcher ANT_PATH_MATCHER = new AntPathMatcher();
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/**
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* 授权集合
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*/
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private final List<AuthSecure> authSecures;
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@Override
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public boolean preHandle(@NonNull HttpServletRequest request, @NonNull HttpServletResponse response, @NonNull Object handler) {
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boolean check = authSecures.stream().filter(authSecure -> checkAuth(request, authSecure)).findFirst().map(
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authSecure -> checkExpression(authSecure.getExpression())
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).orElse(Boolean.TRUE);
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if (!check) {
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log.warn("授权认证失败,请求接口:{},请求IP:{},请求参数:{}", request.getRequestURI(), WebUtil.getIP(request), JsonUtil.toJson(request.getParameterMap()));
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ResponseProvider.write(response);
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return false;
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}
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return true;
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}
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/**
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* 检测授权
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*/
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private boolean checkAuth(HttpServletRequest request, AuthSecure authSecure) {
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return checkMethod(request, authSecure.getMethod()) && checkPath(request, authSecure.getPattern());
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}
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/**
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* 检测请求方法
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*/
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private boolean checkMethod(HttpServletRequest request, HttpMethod method) {
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return method == HttpMethod.ALL || (
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method != null && method == HttpMethod.of(request.getMethod())
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);
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}
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/**
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* 检测路径匹配
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*/
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private boolean checkPath(HttpServletRequest request, String pattern) {
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String servletPath = request.getServletPath();
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String pathInfo = request.getPathInfo();
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if (pathInfo != null && pathInfo.length() > 0) {
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servletPath = servletPath + pathInfo;
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}
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return ANT_PATH_MATCHER.match(pattern, servletPath);
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}
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/**
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* 检测表达式
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*/
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private boolean checkExpression(String expression) {
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Boolean result = EXPRESSION_PARSER.parseExpression(expression).getValue(EVALUATION_CONTEXT, Boolean.class);
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return result != null ? result : false;
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}
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}
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