License Management System

A full-stack application for managing software licenses with a NestJS backend and Next.js frontend.

Prerequisites

• Node.js (v14 or higher)
• PostgreSQL (v12 or higher)
• npm or yarn

Setup Instructions

Database Setup

1. Install PostgreSQL if you haven't already
2. Make sure PostgreSQL service is running
3. The application will automatically create the database and tables on first start

Backend Setup

1. Navigate to the backend directory:

   cd backend

2. Copy the example environment file and update it with your database credentials:

   cp .env.example .env

Project Setup

npm run install:all

Installs all dependencies for both the backend and frontend. This command:

• Runs npm install in the backend directory
• Runs npm seed in the backend directory
• Runs npm install in the frontend directory

Usage example:

npm run install:all

Running the Application

To run both the backend and frontend concurrently, you can use the following command from the root directory:

npm run start:all

This command will start both the backend server and the frontend development server simultaneously. The server will run on http://localhost:3000 The frontend will run on http://localhost:3001

Available Commands

The following commands are available in the root package.json:

npm run add-license-check

Adds license checking functionality to your JavaScript files. This command:

• Processes your core JavaScript files
• Adds license verification logic
• Creates the necessary modifications for license checking

npm run obfuscate

Obfuscates the modified core JavaScript file for security. This command:

• Takes the modified core file (backend/public/core_modified.js)
• Applies code obfuscation using javascript-obfuscator
• Outputs the obfuscated version to backend/public/ocore.js
• Uses configuration from obfuscator-config.json

Usage example:

# First add license checking
npm run add-license-check

# Then obfuscate the modified file
npm run obfuscate

Features

• License Management Dashboard
  • View all licenses in a table format
  • Add new licenses
  • Edit existing licenses
  • Delete licenses
• License Verification API
  • Endpoint: POST /api/check-license
  • Parameters: url, token
  • Returns license validity status
• User Authentication
  • JWT-based authentication
  • Protected routes
  • Admin user management

API Endpoints

Authentication

• POST /api/auth/login - Login with email and password

  {
    "email": "[email protected]",
    "password": "admin123"
  }

License Management

• GET /api/licenses - Get all licenses (requires authentication)
• POST /api/licenses - Create a new license (requires authentication)
• PUT /api/licenses/:id - Update a license (requires authentication)
• DELETE /api/licenses/:id - Delete a license (requires authentication)

License Verification

• POST /api/check-license - Verify a license (public endpoint)

  {
    "url": "example.com",
    "token": "license-token"
  }

Security Features

• JWT-based authentication
• Password hashing with bcrypt
• Protected API endpoints
• CORS enabled
• Input validation