LICENSE.md · fQwQf/开发者保护与自由许可

# Developer Protection & Freedom License (DPFL)

**Version 1, November 2, 2024**  
License Copyright © 2024 fQwQf fQwQf6@outlook.com  
Software Copyright © 2024 fQwQf fQwQf6@outlook.com

**Copyright Statement**

In this document, unless otherwise specified, the software refers to Developer Protection & Freedom License, and the developer refers to fQwQf.  
The copyright of this software remains with the developer. This open-source agreement is essentially a copyright license agreement that allows the rights holder to conditionally permit specific rights to the public. Users are granted the right to use, copy, modify, and redistribute this software, provided they comply with the terms of this agreement, but this agreement does not transfer the copyright of the software.

**1. Usage Rights**

This software license allows anyone to freely use, copy, and redistribute the software for non-commercial purposes; however, **if the user intends to use the software for commercial purposes, they must obtain written permission from the developer**. Unauthorized commercial use will be considered a breach of contract.  
It is important to note that if a user creates an online service or internal solution based on this software, the terms regarding commercial use will also apply.

**2. Code Reuse Conditions**

Users may reuse any part of the software's code but must retain attribution information. If a software project includes parts of this software, the portions that are original works of this software must be distributed under the original licensing terms of the user (if distributed), while the licensing terms for other parts can be chosen freely by the project maintainer. Specifically:

- If a file contains part of this software's code, that file must be distributed under the original licensing terms.
- If a file does not contain any code from this software, the licensing terms can be freely chosen by the project maintainer, or it may be closed source.

Furthermore, users who create online services based on this software are not required to open source those services under the same agreement.

**3. License Change Clause**

The developer has the right to change the open-source license for this software to any other license or to close it. The modified license will apply to all subsequent versions of the software but will not affect the licensing conditions of versions released prior to the modification.

**4. Jurisdictional Limitations**

This agreement is governed by the laws of the developer's country/region. If any legal issues arise within this legal framework, the developer reserves the final interpretation rights.

**5. Patent License Limitations**

This agreement explicitly does not grant any patent rights related to this software unless the user obtains additional written authorization. Users must assume the risk of patent disputes arising from their use.

**6. Patent Retaliation Clause**

If a user files any patent infringement lawsuit against the developer concerning this software, that user will automatically lose all rights to use this software, including but not limited to the rights to modify, redistribute, and create derivative works.

**7. Enhanced Attribution Requirements**

When using or redistributing this software, users must retain and display the original attribution and copyright notice to clarify the developer's ownership of the software.

**8. Privacy Breach Usage Restrictions**

In cases where this software involves privacy-related functionalities, users must obtain the explicit consent of the relevant parties before using such functionalities to protect privacy rights.

**9. Promotion Statement Restrictions**

When promoting or advertising this software and its derivative works, users must specifically mention the original source of the software and developer information, but must obtain the developer's written permission to use the developer's name or logo for promotional purposes. Users may not promote using the developer's name without permission. In other words, while promoting, the original source and developer information must be included, but it should not be highlighted without the developer's written permission.

**10. Disclaimer and Limitation of Liability**

This software makes no guarantees regarding suitability or specific functionalities. The developer is not liable for any direct, indirect, incidental, special, punitive, or consequential damages arising from the use of the software.

**11. Multilingual Versions**

This agreement is available in multiple languages. **We strive to keep the versions consistent across languages; however, in exceptional cases where conflicts arise, the language version actually used shall take precedence.** If multiple language versions of the license files exist within a project, they should be sorted by **file size in ascending order**, with the **first language version** in the first file being the valid version.

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