secure-file-upload v1.1.0

Secure File Upload

A robust middleware for secure file uploads in Node.js applications, with built-in support for file validation, encryption, and uploading to multiple storage providers (AWS S3, local storage).

Features

• File type and size validation using Yup.
• Built-in support for AWS S3 and local file storage.
• Optional AES-256 encryption for sensitive files.
• Lightweight and extensible middleware for Express.js.
• Full TypeScript support.

Installation

Using NPM

npm install secure-file-upload

3. Testing the Enhanced Package

3.1. Example Usage in an Express App

Here's how you can use the enhanced package in an Express application.

// app.ts
import express from "express";
import dotenv from "dotenv";
import { secureFileUpload, generatePresignedUrl } from "secure-file-upload";

dotenv.config();

const app = express();

// Ensure the uploads directory exists for local storage
import fs from "fs";
if (!fs.existsSync("./uploads")) {
  fs.mkdirSync("./uploads");
}

// File Upload Endpoint
app.post(
  "/upload",
  secureFileUpload({ storage: "s3" }), // Change to 'local' for local uploads
  (req, res) => {
    res.send("File uploaded securely!");
  }
);

// Presigned URL Endpoint
app.get(
  "/file/:key",
  generatePresignedUrl({ expiresInSeconds: 600 }), // URL valid for 10 minutes
  (req, res) => {
    // The middleware handles the response
  }
);

const PORT = process.env.PORT || 3000;
app.listen(PORT, () => {
  console.log(`Server running on port ${PORT}`);
});