MIT License

Copyright (c) 2025 BarqNet Contributors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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Third-Party Licenses

This software uses the following third-party libraries and components:

## Android

### ics-openvpn (OpenVPN implementation)
- License: GPLv2
- Source: https://github.com/schwabe/ics-openvpn
- Used for OpenVPN functionality on Android

### WireGuard Android
- License: Apache License 2.0
- Source: https://git.zx2c4.com/wireguard-android
- Used for WireGuard functionality on Android

### Spring Security Crypto (BCrypt)
- License: Apache License 2.0
- Source: https://github.com/spring-projects/spring-security
- Used for password hashing

### OkHttp
- License: Apache License 2.0
- Source: https://github.com/square/okhttp
- Used for HTTP networking and certificate pinning

### Jetpack Compose
- License: Apache License 2.0
- Source: https://developer.android.com/jetpack/compose
- Used for UI development

## iOS

### OpenVPNAdapter
- License: AGPLv3
- Source: https://github.com/ss-abramchuk/OpenVPNAdapter
- Used for OpenVPN functionality on iOS

## Desktop

### Electron
- License: MIT
- Source: https://github.com/electron/electron
- Used for cross-platform desktop application framework

### bcrypt (Node.js)
- License: MIT
- Source: https://github.com/kelektiv/node.bcrypt.js
- Used for password hashing

### electron-store
- License: MIT
- Source: https://github.com/sindresorhus/electron-store
- Used for persistent configuration storage

## All Platforms

### Material Design Icons / SF Symbols
- Respective licenses from Google/Apple
- Used for UI icons

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IMPORTANT LICENSING NOTES:

1. **ics-openvpn (GPLv2)**:
   - This library is used in the Android application
   - GPLv2 is a copyleft license requiring source code disclosure
   - If you distribute the Android app, you must:
     * Make source code available
     * License derivative works under GPLv2
     * Include copyright and license notices

2. **OpenVPNAdapter (AGPLv3)**:
   - This library is used in the iOS application
   - AGPLv3 is a copyleft license requiring source code disclosure
   - Network use constitutes distribution under AGPLv3
   - If you distribute the iOS app or offer it as a service, you must:
     * Make source code available
     * License derivative works under AGPLv3
     * Include copyright and license notices

3. **Compatibility Notice**:
   - The core BarqNet code (excluding VPN libraries) is MIT licensed
   - ics-openvpn (GPLv2) and OpenVPNAdapter (AGPLv3) impose additional requirements
   - Distributing Android/iOS apps requires compliance with GPL/AGPL terms
   - Desktop app (using OpenVPN binary, not library) is MIT licensed

4. **Commercial Use**:
   - MIT license allows commercial use of core code
   - GPL/AGPL libraries require source disclosure even for commercial apps
   - Consider commercial OpenVPN licenses if source disclosure is not acceptable
   - Alternative: Use WireGuard (Apache 2.0) on Android, which is permissive

5. **Recommended Approach**:
   - For open-source distribution: Current setup works well (GPL/AGPL compatible)
   - For closed-source commercial: Replace OpenVPN libraries with:
     * Commercial OpenVPN licenses, OR
     * WireGuard (permissive Apache 2.0 license)

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Full License Texts

For complete license texts of third-party components:

- GPLv2: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
- AGPLv3: https://www.gnu.org/licenses/agpl-3.0.html
- Apache 2.0: https://www.apache.org/licenses/LICENSE-2.0
- MIT: https://opensource.org/licenses/MIT

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Disclaimer

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED. USE AT YOUR OWN RISK. THE AUTHORS ARE NOT RESPONSIBLE FOR ANY
DATA LOSS, SECURITY BREACHES, OR OTHER DAMAGES ARISING FROM USE OF THIS
SOFTWARE.

For VPN applications, security is critical. Users are responsible for:
- Proper configuration and deployment
- Security audits and penetration testing
- Compliance with local laws and regulations
- Backend server security and maintenance

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OpenVPN Trademark Notice

OpenVPN is a registered trademark of OpenVPN Inc. This project is not
affiliated with, endorsed by, or sponsored by OpenVPN Inc.

WireGuard Trademark Notice

WireGuard is a registered trademark of Jason A. Donenfeld. This project
is not affiliated with, endorsed by, or sponsored by the WireGuard project.

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For questions about licensing, contact: license@barqnet.com