向受保护的路由添加多个角色（Node + Express + JWT）

Question

我正在尝试使用用户角色保护某些路由（某些路由接受多个角色）。当我在路由处理程序中列出接受的角色时，只有列出的第一个用户角色才允许访问 - 我需要允许列出的所有角色都具有访问权限。

这是解码 JWT 令牌的身份验证中间件文件 (auth.js)：

import jwt from "jsonwebtoken";

const auth = (req, res, next) => {
  const token = req.header("x-auth-token");
  if (!token)
    return res
      .status(401)
      .send({ message: "Access denied. No token provided!" });

  try {
    const decoded = jwt.verify(token, "SomethingPrivate");
    req.user = decoded;
    next();
  } catch (ex) {
    res.status(400).send({ message: "Invalid Token." });
  }
};

export const superAdmin = (req, res, next) => {
  const token = req.header("x-auth-token");
  if (!auth && !token)
    return res.status(401).send({ message: "Access denied." });

  const decoded = jwt.verify(token, "SomethingPrivate");
  if (auth && decoded.role === "superAdmin") {
    res.status(200);
    next();
  } else {
    res.status(400).send({ message: "Access denied!" });
  }
};

export const admin = (req, res, next) => {
  const token = req.header("x-auth-token");
  if (!auth && !token)
    return res.status(401).send({ message: "Access denied." });

  const decoded = jwt.verify(token, "SomethingPrivate");
  if (auth && decoded.role === "admin") {
    res.status(200);
    next();
  } else {
    res.status(400).send({ message: "Access denied!" });
  }
};

export const teacher = (req, res, next) => {
  const token = req.header("x-auth-token");
  if (!auth || !token)
    return res.status(401).send({ message: "Access denied." });

  const decoded = jwt.verify(token, "SomethingPrivate");
  if (auth && decoded.role === "teacher") {
    res.status(200);
    next();
  } else {
    res.status(400).send({ message: "Access denied!" });
  }
};

export const student = (req, res, next) => {
  const token = req.header("x-auth-token");
  if (!auth || !token)
    return res.status(401).send({ message: "Access denied." });

  const decoded = jwt.verify(token, "SomethingPrivate");
  if (auth && decoded.role === "student") {
    res.status(200);
    next();
  } else {
    res.status(400).send({ message: "Access denied!" });
  }
};

export const parent = (req, res, next) => {
  const token = req.header("x-auth-token");
  if (!auth) return res.status(401).send({ message: "Access denied." });

  const decoded = jwt.verify(token, "SomethingPrivate");
  if (auth && decoded.role === "parent") {
    res.status(200);
    next();
  } else {
    res.status(400).send({ message: "Access denied!" });
  }
};

这是路由器文件（userRoute.js）：

import express from "express";
import {
  superAdmin,
  admin,
  teacher,
  student,
  parent,
} from "../middleware/auth.js";
const router = express.Router();
import {
  view,
  find,
  me,
  create,
  edit,
  update,
  viewUser,
} from "../controllers/userController.js";

// Routes
router.get("/", [superAdmin, admin], view); //The route I am struggling with at the moment//
router.post("/", find);
router.get("/me", me);
router.post("/create", superAdmin, create);
router.get("/edituser/:userID", edit);
router.post("/edituser/:userID", [], update);
router.get("/viewuser/:userID", viewUser);


export { router as user };

最后，登录时签名时插入 JWT 有效负载的数据并存储在响应标头中：

const token = jwt.sign(
              {
                userID: result[0].userID,
                firstName: result[0].firstName,
                lastName: result[0].lastName,
                email: result[0].email,
                role: result[0].role,
              },

在 userRoute.js 文件中，我尝试在该路由的每个接受的角色之间使用管道运算符，但我似乎无法将角色视为布尔值。

如有任何帮助，我们将不胜感激！ （这是在不久的将来将与 React 前端配对的后端。）

Answer 1

中间件函数数组始终像按顺序指定路由一样工作。这意味着，如果您在其中一个中间件函数中调用 res.send()，则数组中的所有下一个函数都尚未使用。

我会这样建议，例如：

用于家长、学生、管理员访问路由的中间件

export const parent = (req, res, next) => {
  const token = req.header("x-auth-token");
  if (!auth) return res.status(401).send({ message: "Access denied." });

  const decoded = jwt.verify(token, "SomethingPrivate");
  if (auth && ["parent", "student", "admin"].includes(decoded.role)) {
    res.status(200);
  } else {
    res.status(400).send({ message: "Access denied!" });
  }
};

仅由 admin 访问的路由中间件：

export const parent = (req, res, next) => {
  const token = req.header("x-auth-token");
  if (!auth) return res.status(401).send({ message: "Access denied." });

  const decoded = jwt.verify(token, "SomethingPrivate");
  if (auth && ["admin"].includes(decoded.role))) {
    res.status(200);
  } else {
    res.status(400).send({ message: "Access denied!" });
  }
};