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243 lines
7.9 KiB
243 lines
7.9 KiB
6 days ago
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---
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description: 权限管理(Authority)
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globs:
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---
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# 权限管理(Authority)
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cool-admin 采用是是一种无状态的权限校验方式。[jwt](mdc:https:/jwt.io/introduction), 通俗地讲他就是把用户的一些信息经过处理生成一段加密的字符串，后端解密到信息进行校验。而且这个信息是带有时效的。
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cool-admin 默认约定每个模块下的 `controller/admin`为后台编写接口，`controller/app`编写对外如 app、小程序的接口。
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- 框架会对路由前缀 `/admin/**` 开头的接口进行权限校验，校验逻辑写在`base`模块下的`middleware/authority.ts`中间件
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- 框架会对路由前缀 `/app/**` 开头的接口进行权限校验，校验逻辑写在`user`模块下的`middleware/app.ts`中间件
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::: tip
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也就是说模块`controller/admin`与`controller/app`是需要进行 token 校验的，如果你不想 token 校验有两种方式：
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- 使用路由标签的形式，忽略 token 校验，详细查看[路由标签](mdc:src/guide/core/controller.html#路由标签)；
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- 新建其他的文件夹比如：`controller/open`；
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这样就不会提示登录失效~
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:::
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## 登录
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查询校验用户信息，然后将用户信息用 jwt 的方式加密保存返回给客户端。
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`src/app/modules/base/service/sys/login.ts`
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```ts
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/**
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* 登录
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* @param login
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*/
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async login(login: LoginDTO) {
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const { username, captchaId, verifyCode, password } = login;
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// 校验验证码
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const checkV = await this.captchaCheck(captchaId, verifyCode);
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if (checkV) {
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const user = await this.baseSysUserEntity.findOne({ username });
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// 校验用户
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if (user) {
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// 校验用户状态及密码
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if (user.status === 0 || user.password !== md5(password)) {
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throw new CoolCommException('账户或密码不正确~');
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}
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} else {
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throw new CoolCommException('账户或密码不正确~');
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}
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// 校验角色
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const roleIds = await this.baseSysRoleService.getByUser(user.id);
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if (_.isEmpty(roleIds)) {
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throw new CoolCommException('该用户未设置任何角色，无法登录~');
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}
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// 生成token
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const { expire, refreshExpire } = this.coolConfig.jwt.token;
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const result = {
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expire,
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token: await this.generateToken(user, roleIds, expire),
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refreshExpire,
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refreshToken: await this.generateToken(
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user,
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roleIds,
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refreshExpire,
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true
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),
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};
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// 将用户相关信息保存到缓存
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const perms = await this.baseSysMenuService.getPerms(roleIds);
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const departments = await this.baseSysDepartmentService.getByRoleIds(
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roleIds,
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user.username === 'admin'
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);
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await this.coolCache.set(
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`admin:department:${user.id}`,
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JSON.stringify(departments)
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);
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await this.coolCache.set(`admin:perms:${user.id}`, JSON.stringify(perms));
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await this.coolCache.set(`admin:token:${user.id}`, result.token);
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await this.coolCache.set(`admin:token:refresh:${user.id}`, result.token);
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return result;
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} else {
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throw new CoolCommException('验证码不正确');
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}
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}
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```
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## 权限配置
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admin 用户拥有所有的权限，无需配置，但是对于其他只拥有部分权限的用户，我们得选择他们的权限，在这之前我们得先录入我们的系统有哪些权限是可以配置的
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可以登录后台管理系统，`系统管理/权限管理/菜单列表`
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## 选择权限
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新建一个角色，就可以为这个角色配置对应的权限，用户管理可以选择对应的角色，那么该用户就有对应的权限，一个用户可以选择多个角色
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## 全局校验
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通过一个全局的中间件，我们在全局统一处理，这样就无需在每个 controller 处理，显得有点多余。
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`src/app/modules/base/middleware/authority.ts`
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```ts
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import { App, Config, Middleware } from "@midwayjs/core";
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import * as _ from "lodash";
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import { RESCODE } from "@cool-midway/core";
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import * as jwt from "jsonwebtoken";
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import { NextFunction, Context } from "@midwayjs/koa";
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import { IMiddleware, IMidwayApplication } from "@midwayjs/core";
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/**
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* 权限校验
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*/
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@Middleware()
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export class BaseAuthorityMiddleware
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implements IMiddleware<Context, NextFunction>
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{
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@Config("koa.globalPrefix")
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prefix;
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@Config("module.base")
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jwtConfig;
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coolCache;
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@App()
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app: IMidwayApplication;
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resolve() {
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return async (ctx: Context, next: NextFunction) => {
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let statusCode = 200;
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let { url } = ctx;
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url = url.replace(this.prefix, "");
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const token = ctx.get("Authorization");
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const adminUrl = "/admin/";
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// 路由地址为 admin前缀的 需要权限校验
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if (_.startsWith(url, adminUrl)) {
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try {
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ctx.admin = jwt.verify(token, this.jwtConfig.jwt.secret);
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} catch (err) {}
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// 不需要登录 无需权限校验
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if (new RegExp(`^${adminUrl}?.*/open/`).test(url)) {
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await next();
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return;
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}
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if (ctx.admin) {
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// 超管拥有所有权限
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if (ctx.admin.username == "admin" && !ctx.admin.isRefresh) {
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await next();
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return;
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}
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// 要登录每个人都有权限的接口
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if (new RegExp(`^${adminUrl}?.*/comm/`).test(url)) {
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await next();
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return;
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}
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// 如果传的token是refreshToken则校验失败
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if (ctx.admin.isRefresh) {
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ctx.status = 401;
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ctx.body = {
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code: RESCODE.COMMFAIL,
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message: "登录失效~",
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};
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return;
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}
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// 需要动态获得缓存
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this.coolCache = await ctx.requestContext.getAsync("cool:cache");
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// 判断密码版本是否正确
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const passwordV = await this.coolCache.get(
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`admin:passwordVersion:${ctx.admin.userId}`
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);
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if (passwordV != ctx.admin.passwordVersion) {
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ctx.status = 401;
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ctx.body = {
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code: RESCODE.COMMFAIL,
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message: "登录失效~",
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};
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return;
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}
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const rToken = await this.coolCache.get(
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`admin:token:${ctx.admin.userId}`
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);
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if (!rToken) {
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ctx.status = 401;
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ctx.body = {
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code: RESCODE.COMMFAIL,
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message: "登录失效或无权限访问~",
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};
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return;
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}
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if (rToken !== token && this.jwtConfig.sso) {
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statusCode = 401;
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} else {
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let perms = await this.coolCache.get(
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`admin:perms:${ctx.admin.userId}`
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);
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if (!_.isEmpty(perms)) {
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perms = JSON.parse(perms).map((e) => {
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return e.replace(/:/g, "/");
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});
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if (!perms.includes(url.split("?")[0].replace("/admin/", ""))) {
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statusCode = 403;
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}
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} else {
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statusCode = 403;
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}
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}
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} else {
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statusCode = 401;
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}
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if (statusCode > 200) {
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ctx.status = statusCode;
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ctx.body = {
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code: RESCODE.COMMFAIL,
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message: "登录失效或无权限访问~",
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};
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return;
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}
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}
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await next();
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};
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}
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}
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```
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## 令牌续期
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jwt 加密完的字符串是有时效的，系统默认时效时间为 2 个小时。这期间就需要续期令牌才可以继续操作。
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框架登录设置了一个 refreshToken，默认过期时间为 30 天。可以使用这个去换取新的 token，这时候又可以延长 2 个小时。
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## 其他权限
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你可以单独编写一个中间间来控制其他权限，如 app、小程序及其他对外接口，但是可以参考后台管理系统权限过滤、token 生成校验的实现方式
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