Use security libraries to secure app

[MisterMunchkin]

https://rubyjanecabagnot.pro/enhancing-security-in-next-js-applications-best-practices/

https://dev.to/salmandotweb/secure-your-nextjs-application-essential-security-practices-and-tools-1j5i

[MisterMunchkin]

We can also take chat gpts suggestion and create cross site request forgery token:

Certainly! In Next.js, you can handle CSRF protection by utilizing middleware within your API routes. Here's a step-by-step guide:

1. Generate CSRF Token on the Client Side: In your Next.js web app, generate a CSRF token when the user loads the app. You can use libraries like csrf or create your own method to generate a unique token. Store this token in a cookie or local storage.

2. Send CSRF Token with API Requests: When making a POST request from your web app to the API route, include the CSRF token in the request headers. You can do this using fetch or any HTTP client library you prefer.

3. Verify CSRF Token on the Server Side: In your API route, create a middleware to verify the CSRF token sent with the request. Compare it against the token stored on the server or in the session to confirm its authenticity.

Here's a basic example of how you might implement this:

Client Side (Web App):

// Generate and store CSRF token
const csrfToken = generateCSRFToken(); // Your method to generate CSRF token
localStorage.setItem('csrfToken', csrfToken);

Making API Request:

const csrfToken = localStorage.getItem('csrfToken');

fetch('/api/your-endpoint', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'CSRF-Token': csrfToken // Include CSRF token in the headers
  },
  body: JSON.stringify(yourData)
})
  .then(response => {
    // Handle response
  })
  .catch(error => {
    // Handle error
  });

API Route (Server Side):

// api/your-endpoint.js

// Middleware to verify CSRF token
const verifyCSRFToken = (req, res, next) => {
  const csrfToken = req.headers['csrf-token']; // Get CSRF token from headers
  const storedToken = req.session.csrfToken; // Get stored CSRF token from session

  if (csrfToken !== storedToken) {
    return res.status(403).json({ error: 'Invalid CSRF token' });
  }

  next();
};

// Use the middleware in your API route
export default function handler(req, res) {
  if (req.method === 'POST') {
    // Handle POST request
  } else {
    // Handle other request methods
  }
}

export { verifyCSRFToken };

Ensure that you've configured your session and storage mechanisms appropriately in your Next.js app, and adjust the code as needed based on your specific implementation and security requirements.