[Too]

Thats a very specific property of git, stemming from its distributed nature. Allowing one to push the history of a repo fetched from elsewhere.

The receiver of the push is still considered an application server in this case. Whether or not GitHub solves this with a proxy or by reimplementing the git protocol and solve it in process is an internal detail on their end. GitHub is still “the application”. Other git forges do this type of auth in the same process without any proxies, Gitlab or Gerrit for example, open source and self hosted, making this easy to confirm.

In fact, for such a hypothetical proxy to be able to solve this scenario, the proxy must have an implementation of git itself. How else would it know how to extract the commiter email and cross check that it matches the logged in users email?

An application almost always has the best view of what a resource is, the permissions set on it and it almost always has awareness of “who” is acting upon said resource.

[withinboredom]

> Thats a very specific property of git, stemming from its distributed nature.

Not at all. For example, authentication by a proxy server is old-as-the-internet. There's a name for it, I think, "proxy authentication"?[1] I've def had to write support for it many times in the past. It was the way to do SSO for self-hosted apps before modern SSO.

> In fact, for such a hypothetical proxy to be able to solve this scenario, the proxy must have an implementation of git itself.

Ummm, have you ever done a `git clone` before? Do you note the two most common types of urls: https/ssh. Both of these are standard implementations. Logging the user that is authenticating is literally how they do rate limiting and audit logging. The actual git server doesn't need to know anything about the current user or whether or not they are authenticated at all.

1: https://www.oreilly.com/library/view/http-the-definitive/156...

[Too]

Enough of shifting the goal posts. This was about applications doing their own audit logging, I still don’t understand what’s wrong with that. Not made up claims that applications or a git server doesn’t know who is acting upon it. Yes, a proxy may know “who” and can perform additional auth and logging at that level, but often has a much less granular view of “what”. In the case of git over http, I doubt nginx out of the box has any idea of what a branch or a commiter email is, at best you will only see a request to the repo name and git-upload-pack url.

Final food for the trolls. Sorry.