在 GitHub 上开源协议未知的项目应该怎么对待？

@quietjosen 例如 https://github.com/toolinbox/iPic 这个项目。

查询了一下 GitHub 的默认协议

You're under no obligation to choose a license. It's your right not to include one with your code or project, but please be aware of the implications. Generally speaking, the absence of a license means that the default copyright laws apply. This means that you retain all rights to your source code and that nobody else may reproduce, distribute, or create derivative works from your work. This might not be what you intend.

Even if this is what you intend, if you publish your source code in a public repository on GitHub, you have accepted the Terms of Service which do allow other GitHub users some rights. Specifically, you allow others to view and fork your repository

By setting your repositories to be viewed publicly, you agree to allow others to view and fork your repositories