package com.moon.server.interceptor;
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import com.alibaba.fastjson.JSON;
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import com.moon.server.entity.all.HttpStatus;
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import com.moon.server.entity.all.ResponseMsg;
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import com.moon.server.entity.sys.TokenEntity;
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import com.moon.server.entity.sys.UserEntity;
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import com.moon.server.helper.StringHelper;
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import com.moon.server.helper.WebHelper;
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import com.moon.server.service.all.SysService;
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import com.moon.server.entity.all.StaticData;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.web.method.HandlerMethod;
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import org.springframework.web.servlet.HandlerInterceptor;
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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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* 身份认证拦截器
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* @author WWW
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*/
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@Configuration
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public class AuthInterceptor implements HandlerInterceptor {
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private final SysService sysService;
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private static final Log log = LogFactory.getLog(AuthInterceptor.class);
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public static final String NO_TOKEN = JSON.toJSONString(new ResponseMsg<String>(HttpStatus.TOKEN_ERROR, "找不到令牌"));
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public static final String NO_LOGIN = JSON.toJSONString(new ResponseMsg<String>(HttpStatus.NO_LOGIN_ERROR, "用户未登录"));
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public static final String USER_LOCK = JSON.toJSONString(new ResponseMsg<String>(HttpStatus.USER_LOCK_ERROR, "用户ID已禁用"));
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public static final String NO_AUTH = JSON.toJSONString(new ResponseMsg<String>(HttpStatus.NO_AUTH_ERROR, "无权限访问"));
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public static final String IP_NULL = JSON.toJSONString(new ResponseMsg<String>(HttpStatus.UNAUTHORIZED, "IP地址为空"));
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public static final String BLACK_LIST = JSON.toJSONString(new ResponseMsg<String>(HttpStatus.UNAUTHORIZED, "IP列入黑名单"));
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public static final String ILLEGAL_TOKEN = JSON.toJSONString(new ResponseMsg<String>(HttpStatus.UNAUTHORIZED, "令牌来源非法"));
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public AuthInterceptor(SysService sysService) {
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this.sysService = sysService;
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}
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/**
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* Controller执行之前执行，如果返回值是true则代表放行，返回false则拦截
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*/
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@Override
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public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
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// noinspection AlibabaRemoveCommentedCode
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try {
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// 1.非方法 或 无需授权，无需拦截
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if (!(handler instanceof HandlerMethod) || noNeedAuth(request)) {
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return true;
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}
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// 2.获取令牌
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String token = WebHelper.getToken(request);
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if (StringHelper.isNull(token)) {
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return WebHelper.writeStr2Page(response, NO_TOKEN);
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}
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// 3.获取用户
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UserEntity ue = sysService.tokenService.getUserByToken(token);
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if (ue == null) {
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return WebHelper.writeStr2Page(response, NO_LOGIN);
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}
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// 4.获取IP
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String ip = WebHelper.getIpAddress(request);
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if (StringHelper.isEmpty(ip)) {
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return WebHelper.writeStr2Page(response, IP_NULL);
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}
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// 5.检查黑名单
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if (!checkBlackList(ip, request)) {
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return WebHelper.writeStr2Page(response, BLACK_LIST);
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}
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// 6.admin跳过权限检测
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if (StaticData.ADMIN.equals(ue.getUid())) {
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return true;
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}
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// 7.检查白名单和IP一致性
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if (!checkWhiteList(ip, request)) {
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if (!checkIpSource(ip, token)) {
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return WebHelper.writeStr2Page(response, ILLEGAL_TOKEN);
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}
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}
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// 8.检查用户ID是否禁用
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if (sysService.tokenService.isUidDisable(ue)) {
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return WebHelper.writeStr2Page(response, USER_LOCK);
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}
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// 9.权限校验
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if (!checkPerms(ue, request)) {
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System.out.println("无权限访问：" + request.getRequestURI().toLowerCase());
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return WebHelper.writeStr2Page(response, NO_AUTH);
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}
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return true;
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} catch (Exception ex) {
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log.error(ex.getMessage(), ex);
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return false;
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}
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}
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/**
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* 无需授权
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*/
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private static boolean noNeedAuth(HttpServletRequest request) {
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String uri = request.getRequestURI().toLowerCase();
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for (String page : StaticData.EXCLUDE_PATH) {
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if (uri.contains(page)) {
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return true;
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}
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}
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return false;
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}
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/**
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* 检查权限
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*/
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private boolean checkPerms(UserEntity ue, HttpServletRequest request) {
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List<String> list = sysService.permsService.selectPerms(ue.getUid());
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if (list == null || list.size() == 0) {
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return false;
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}
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String url = request.getRequestURI();
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for (String perm : list) {
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if (url.contains(perm)) {
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return true;
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}
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}
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return false;
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}
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/**
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* 检查黑名单
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*/
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private boolean checkBlackList(String ip, HttpServletRequest request) {
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List<String> blackList = sysService.blacklistService.selectIpList(1);
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if (blackList == null || blackList.isEmpty()) {
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return true;
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}
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if (blackList.contains(ip)) {
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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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* 检查白名单
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*/
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private boolean checkWhiteList(String ip, HttpServletRequest request) {
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List<String> whiteList = sysService.blacklistService.selectIpList(2);
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if (whiteList == null || whiteList.isEmpty()) {
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return false;
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}
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return whiteList.contains(ip);
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}
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/**
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* 检查IP一致性：固定令牌不检查
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*/
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private boolean checkIpSource(String ip, String token) {
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TokenEntity te = sysService.tokenService.getEntityByToken(token);
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return StaticData.I1 == te.getType() || te.getIp().equals(ip);
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}
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}
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