Authentication and Authorization Middleware

Overview

The Authentication and Authorization Middleware is a Node.js package designed to provide authentication and authorization functionalities for web applications. It includes middleware functions for authenticating users based on username and password, as well as for authorizing access based on user roles.

Installation

To install the Authentication and Authorization Middleware package, use npm:

npm install authentication-authorization-middleware

Usage

To use the Authentication and Authorization Middleware in your Node.js application, import the AuthMiddleware class and create an instance. You can then use the provided middleware functions to authenticate users and authorize access to specific routes or resources.

const express = require('express');
const AuthMiddleware = require('authentication-authorization-middleware');

const app = express();
const authMiddleware = new AuthMiddleware();

// Authenticate user
app.post('/login', authMiddleware.authenticate, (req, res) => {
  res.json({ message: 'Authentication successful', user: req.user });
});

// Authorize access for admin
app.get('/admin', authMiddleware.authorize('admin'), (req, res) => {
  res.json({ message: 'Authorized access for admin user' });
});

// Authorize access for regular user
app.get('/user', authMiddleware.authorize('user'), (req, res) => {
  res.json({ message: 'Authorized access for regular user' });
});

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});

API

authenticate(req, res, next)

Middleware function to authenticate users based on username and password. It attaches the authenticated user information to the request object (req.user) for later use.

• req (object): The request object.
• res (object): The response object.
• next (function): The next middleware function in the stack.

authorize(role)

Middleware function to authorize access based on user roles. It takes a role as a parameter and returns a middleware function that verifies if the authenticated user has the required role.

• role (string): The role required to access the route or resource.

License

This project is licensed under the MIT License - see the LICENSE file for details.