# License Manager

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[中文](README.md) | [English](README_EN.md) 

---

## Overview

License Manager is a comprehensive software commercialization solution that integrates software licensing management, self-service user portals, and commercial operation capabilities. It supports dual-track operations for both B2B enterprise customers and B2C individual users, providing full-process digital services from registration and purchase to license activation. It employs a hybrid online/offline licensing model combined with hardware binding and RSA digital signatures to ensure security.

✨It enables **any programming language** and **any type of software product** to **quickly integrate licensing capabilities** via standardized **HTTP APIs** and **cross-platform client SDKs**.

## Demo Environment
  <a href="https://lm.cedar-v.com:18080">
    <img src="https://img.shields.io/badge/Demo-Online-success?logo=googlechrome" alt="Live Demo">
  </a>

Access URL: [lm.cedar-v.com:18080](http://lm.cedar-v.com:18080)  
**Login Credentials:**  
- Username: `admin`  
- Password: `admin@123`

> 💡 This is a demo environment showcasing our current features. You can experience the implemented core functionalities while we continue active development with more features coming soon.

## Stars & Followers

<a href="https://github.com/cedar-v/license-manager" target="_blank">
  <img src="https://img.shields.io/github/stars/cedar-v/license-manager?style=social" alt="GitHub Stars">
</a>
<a href="https://github.com/cedar-v/license-manager" target="_blank">
  <img src="https://img.shields.io/github/watchers/cedar-v/license-manager?style=social" alt="GitHub Watchers">
</a>

If this project helps you, please give it a star—your support keeps us moving!

## Client SDK

Client SDK repository: [https://github.com/cedar-v/license-manager-sdk](https://github.com/cedar-v/license-manage-sdk-go)

## System Interface

### Login Page
![Login Page](docs/images/login.png)

### Management Dashboard
![Dashboard](docs/images/home.png)

### Customer Management
![Customer Management Page](docs/images/customer.png)

### License Management
![License Management Page](docs/images/license.png)

The customer management module provides comprehensive customer information management features, including CRUD operations for customer data, status management, and authorization associations.

## Self-Service User Portal

The platform provides comprehensive self-service user portals supporting **dual-track operations for B2B+B2C**:

### B2B Enterprise Customer Services
- **Enterprise User Registration**: Mobile phone registration with enterprise admin managing member accounts
- **Product Package Purchase**: Three package types (Trial, Basic, Professional) with bulk license purchasing
- **License Code Management**: Online license purchase with offline activation and license sharing
- **Device Management**: Enterprise users can view and manage all activated devices with device unbinding
- **Order Management**: Complete order history queries and status tracking

### B2C Individual Customer Services
- **Individual User Registration**: Quick mobile phone registration with simplified personal account management
- **Flexible Purchasing**: Support for single or small quantity license purchases meeting individual user needs
- **Convenient Activation**: Support for both online activation and offline activation modes
- **Device Monitoring**: Individual users can monitor device status and usage in real-time

### Unified Payment Experience
- **Alipay Integration**: Support for Alipay QR code payment with secure and reliable payment experience
- **Payment Status Tracking**: Real-time payment status queries and callback notifications
- **Multi-environment Support**: Sandbox environment testing and production environment switching

## Key Features

- 🔧 **Customer Management**: Complete customer information management with status control
- 🔐 **License Generation**: Online/offline license modes with hardware fingerprinting
- 📊 **License Management**: Real-time status monitoring and license lifecycle management
- 📦 **Deployment Packages**: Automatic generation of deployment packages with configurations
- 🌐 **API Services**: RESTful APIs for validation, activation, and heartbeat monitoring
- ⚙️ **System Management**: Admin authentication and monitoring dashboard
- 🛠️ **Cross-platform Tools**: Hardware information extraction tools for multiple platforms
- 👥 **Self-Service User Portal**: Dual-track B2B+B2C operations supporting enterprise customers and individual users with self-service operations

## Technical Stack

- **Frontend**: Vue.js 3+ with modern UI components
- **Backend**: Go 1.23+ with Gin framework, GORM, Viper configuration and Logrus logging
- **Database**: MySQL 8+
- **Configuration**: YAML format configuration files
- **Deployment**: Docker, single machine, or system service

## API Endpoints

```
POST /api/validate      - License validation
POST /api/activate      - License activation
POST /api/heartbeat     - Heartbeat reporting
GET  /api/license/{code} - License information query
GET  /api/customers     - Customer list API
GET  /tools/{tool}      - Tool download
```

## Security & Performance

- **Security Features**:
  - JWT authentication and authorization
  - HMAC-SHA256 signature verification
  - Hardware fingerprint binding for anti-piracy
  - HTTPS transport encryption
  - Multi-language error message support (Chinese/English/Japanese)
  
- **Performance**:
  - **High Concurrency**: Go native goroutines support, theoretically supports 10,000+ concurrent connections
  - **Low Latency**: Average API response time < 50ms
  - **Memory Optimized**: Go GC optimization, memory usage < 100MB
  - **Database Connection Pool**: Connection reuse for maximum database performance
  
- **Reliability**:
  - Comprehensive error handling with multi-language error messages
  - Structured logging and monitoring
  - Automatic database migrations
  - Graceful shutdown and resource cleanup

## Installation

```bash
# Clone the repository
git clone https://github.com/cedar-v/license-manager.git
cd license-manager

# Local backend build & run (optional)
cd backend/cmd
go build -o license-manager

# Configuration (choose one)
# 1) Create config.yaml in the working directory (the app looks here first)
#    cp ../configs/config.example.yaml ./config.yaml && edit it
# 2) Edit ../configs/config.yaml (the app will fall back to this path)

./license-manager
```

## Docker Deployment

### Using Pre-built Images (Recommended)

For quick deployment without downloading source code, you can use pre-built GitHub Container Registry images:

For detailed deployment steps, please refer to: [GitHub Images Deployment Guide](docs/github-images-deploy.md)

### Build from Source

We provide ready-to-use Docker Compose files for development and production:

```bash
# Development (first run with --build is recommended)
docker compose up -d --build

# Production
docker compose -f docker-compose.prod.yml up -d

# Verify backend health
curl http://localhost:18888/health
```

Notes
- Backend config is mounted by Compose:
  - Dev: `backend/configs/config.dev.yaml` → `/app/backend/cmd/config.yaml`
  - Prod: `backend/configs/config.prod.yaml` → `/app/backend/cmd/config.yaml`
- Frontend Nginx proxies `/api/` to `backend:18888` inside the Docker network.
- Health checks use `curl`; the backend image includes `curl`.
- For full details (reverse proxy, health checks, mounts, troubleshooting), see `README-Docker.md`.

## Open Source License

This project is licensed under the **GNU General Public License v3.0 (GPL-3.0)**.

### License Description

- **Free Use**: You are free to use, study, modify, and distribute this software
- **Open Source Requirement**: If you distribute modified versions, they must also be open source under GPL-3.0 license
- **Copyright Protection**: Derivative works using this software must retain the original copyright notice
- **No Warranty**: The software is provided "as is" without any express or implied warranty

### Commercial Use

- Commercial use is permitted, but derivative works must also be open source
- For proprietary licensing or commercial support, please contact the project maintainers

### Full License Text

For detailed license terms, please see the [LICENSE](LICENSE) file in the project root directory, or visit:
https://www.gnu.org/licenses/gpl-3.0.html

---

## Contributing

We welcome contributions! Please feel free to submit a Pull Request.

## Support

### User Feedback & Community

We highly value user feedback and suggestions! Join our QQ group for discussions and communication:

<img src="docs/images/qrcode_1755081220153.jpg" alt="QQ Group QR Code" width="200" />

Scan the QR code or search for the QQ group number to join and connect with other users and developers to:
- Share usage experiences and best practices
- Ask questions and get help
- Participate in new feature discussions
- Provide feedback and improvement suggestions

### Issue Reporting

For technical issues or bug reports, please contact us through:
- Submit GitHub Issues (recommended)
- Provide feedback in the QQ group
- Send email to project maintainers