License Manager

中文 | English

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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

Access URL: 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

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

System Interface

Login Page

Management Dashboard

Customer Management

License Management

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

# 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

Build from Source

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

# 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 file in the project root directory, or visit: https://www.gnu.org/licenses/gpl-3.0.html

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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:

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