Cognito Node.js Package - @graymattersalliance/cognitoauthkit

A comprehensive Node.js package for managing AWS Cognito user authentication, sign-up, sign-in, MFA, password management, and more, built on AWS SDK v3 and Express.js.

Features

• User Sign-Up & Sign-In
• Email OTP Verification
• Resend OTP
• Multi-Factor Authentication (MFA) with TOTP (Google Authenticator, Authy, etc.)
• Password Change & Reset
• Refresh Tokens
• MFA Enable & Disable
• Token-based Authentication (JWT)

Installation

To get started with this package, first, install it via npm:

npm install @graymattersalliance/cognitoauthkit

Or using yarn:

yarn add @graymattersalliance/cognitoauthkit

Prerequisites

Make sure you have an AWS Cognito User Pool and App Client set up. You will need:

1. Region: The AWS region where your Cognito User Pool is located.
2. Client ID: The Cognito App Client ID.
3. User Pool ID: The ID of your Cognito User Pool.
4. (Optional) MFA Label and Issuer: If you are using MFA, define a custom label and issuer for TOTP.

Usage

Step 1: Setup Express.js Application

Create an Express.js application and integrate the CognitoRouter from the package. Here's how:

const express = require('express');
const { CognitoRouter } = require('@graymattersalliance/cognitoauthkit');
const app = express();

app.use(express.json());

const theRouter = new express.Router();

const PORT = process.env.PORT || 8081;

/**
 * Setup Cognito plugin
 */
const cognitoRouter = new CognitoRouter({
  region: '',           // AWS region
  clientId: '', // Cognito Client ID
  userPoolID: '', // Cognito User Pool ID
  mfaLabel: '',         // MFA label for TOTP
  mfaIssuer: '',       // MFA issuer name
  router: theRouter,             // Express Router instance
});

app.use('/api', cognitoRouter.router);

/**
 * Start the server
 */
app.listen(PORT, () => {
  console.log(`Running on http://localhost:${PORT}`);
});

Step 2: Define Environment Variables (Optional)

If you don't want to hardcode the AWS region, client ID, and user pool ID, you can use environment variables in a .env file:

AWS_REGION=us-east-2
COGNITO_CLIENT_ID=
COGNITO_USER_POOL_ID=

Use dotenv to load these variables:

npm install dotenv

Then, in your application:

require('dotenv').config();

const cognitoRouter = new CognitoRouter({
  region: process.env.AWS_REGION,
  clientId: process.env.COGNITO_CLIENT_ID,
  userPoolID: process.env.COGNITO_USER_POOL_ID,
  mfaLabel: 'DevThomas',
  mfaIssuer: 'AWSCognito',
  router: theRouter,
});

Step 3: Available API Routes

Once the CognitoRouter is set up, the following routes are available for managing authentication:

1. Sign Up
   POST /api/signup
   Request Body:

   {
     "email": "[email protected]",
     "password": "Password123!"
   }

2. Sign In
   POST /api/signin
   Request Body:

   {
     "email": "[email protected]",
     "password": "Password123!"
   }

3. Confirm Sign-Up
   POST /api/confirm-signup
   Request Body:

   {
     "email": "[email protected]",
     "confirmationCode": "123456"
   }

4. Resend Confirmation Code
   POST /api/resend-otp
   Request Body:

   {
     "email": "[email protected]"
   }

5. Associate TOTP (MFA)
   POST /api/associate-totp
   Request Body:

   {
     "accessToken": "AccessTokenReceivedAfterSignIn"
   }

6. Verify TOTP (MFA)
   POST /api/verify-totp
   Request Body:

   {
     "accessToken": "AccessTokenReceivedAfterSignIn",
     "otp": "123456"
   }

7. Enable MFA
   POST /api/enable-mfa
   Request Body:

   {
     "accessToken": "AccessTokenReceivedAfterSignIn"
   }

8. Disable MFA
   POST /api/disable-mfa
   Request Body:

   {
     "accessToken": "AccessTokenReceivedAfterSignIn"
   }

9. Change Password
   POST /api/change-password
   Request Body:

   {
     "accessToken": "AccessTokenReceivedAfterSignIn",
     "oldPassword": "OldPassword123!",
     "newPassword": "NewPassword456!"
   }

10. Forgot Password
    POST /api/forgot-password
    Request Body:

    {
      "email": "[email protected]"
    }

11. Confirm Forgot Password (Reset Password)
    POST /api/confirm-forgot-password
    Request Body:

    {
      "email": "[email protected]",
      "confirmationCode": "123456",
      "newPassword": "NewPassword456!"
    }

12. Refresh Token
    POST /api/refresh-token
    Request Body:

    {
      "refreshToken": "RefreshTokenReceivedAfterSignIn"
    }

Step 4: Test the Application

You can use a tool like Postman or curl to test the routes.

Example: Testing Sign Up with Postman

• Endpoint: /api/signup
• Method: POST
• Body (JSON):

  {
    "email": "[email protected]",
    "password": "Password123!"
  }

If the request is successful, you should receive a response like:

{
  "message": "User signed up successfully. Please check your email for the OTP.",
  "result": { ... }
}

Step 5: Customization

You can customize the following parameters when setting up CognitoRouter:

• Region: The AWS region of your Cognito User Pool.
• Client ID: Your Cognito App Client ID.
• User Pool ID: The Cognito User Pool ID.
• MFA Label & Issuer: Customize the TOTP label and issuer that appear in the user's authenticator app.

If you want a custom setup to use this package with your own route, try following:

const cognitoServiceInit = new CognitoService(
  '', //region
  '', // cognito client id
  '', // cofnito user pool id
  'NodeCognito', // MFA URL label
  'NodeCognito', // MFA issuer name
);

app.use('/users/login', async (req, res) => {
  const { email, password } = req.body;
  const cognitoResults = await cognitoServiceInit.signIn(email, password);

  console.log('cognitoResults:', cognitoResults);
  res.status(200).send({
    message: 'User login.',
    cognitoResults,
  });
});

You can disable specific routes by the following example:

1. Allow all routes: (by default)

const cognitoRouter = new CognitoRouter({
  region: '', //region
  clientId: '', // cognito client id
  userPoolID: '', // cofnito user pool id
  router: theRouter, // Express Router instance
  disabledRoutes: {}, // No routes are disabled
});

app.use('/auth', cognitoRouter.router);

2. Disable specific routes

const cognitoRouter = new CognitoRouter({
  region: '', //region
  clientId: '', // cognito client id
  userPoolID: '', // cofnito user pool id
  router: theRouter, // Express Router instance
  disabledRoutes: {
    signup: true, // Disable the signup route
    'enable-mfa': true, // Disable the enable-mfa route
  },
});

app.use('/auth', cognitoRouter.router);

Here are the default routes list:

1. /signup - Default sign up route
2. /signin - Default sign in route
3. /confirm-signup - Default confirm sign up route
4. /refresh-token - Default refresh token route
5. /resend-otp - Default resend email otp route
6. /associate-totp - Default associate auth app route
7. /verify-totp - Default 2fa(auth apps like Google authenticator, Microsoft authenticator, etc.) code verification route
8. /enable-mfa - Default route for enabling MFA for authenticated users
9. /disable-mfa - Default route for disabling MFA for authenticated users
10. /verify-mfa - Default route for verifying MFA for authenticated users
11. /change-password - Default change password route
12. /forgot-password - Default forgot password otp route
13. /confirm-forgot-password - Default forgot password route

License

This project is licensed under the MIT License.