https://github.com/huumn/gitern

an ssh based multitenant git host
https://github.com/huumn/gitern

git golang nostr ssh

Last synced: 5 days ago
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an ssh based multitenant git host

• Host: GitHub
• URL: https://github.com/huumn/gitern
• Owner: huumn
• License: mit
• Created: 2023-06-02T03:17:52.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2023-06-03T00:30:35.000Z (over 1 year ago)
• Last Synced: 2024-10-06T06:41:57.630Z (about 1 month ago)
• Topics: git, golang, nostr, ssh
• Language: Go
• Homepage: https://gitern.com
• Size: 5.17 MB
• Stars: 12
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
This is the source for https://gitern.com ... in summary it's

1. a multitenant git host

2. that uses ssh keys for auth exclusively

3. and has a command-line ui

I'm sharing it hoping it might be able to help someone build a git host on nostr. This isn't particularly relevant to be honest but does

1. have novel auth and

2. is very minimal

I will one day describe more about how it works (especially if someone bothers to ask), but this gist is:

- lots of SSHD hacks

- users are progressively chroot/jailed into isolated parts of the filesytem upon authentication with different sets of commands available

As a starting point, this is where auth begins (this is from the sshd config):

```txt

    Match User git

        AuthorizedKeysCommand /usr/bin/gitern-authorized-keys %f %t %k

        AuthorizedKeysCommandUser authorized-keys-command

        ForceCommand gitern-intake

        AcceptEnv none

        ChrootDirectory /jail

```

They then get forced through `gitern-intake` whose source is `/cmd/intake/intake.go`.

That should be enough for someone curious to start. Huzzah!

Extra credit

---------------

I also wrote a remote helper for gitern that end to end encrypts git repos: https://github.com/huumn/git-remote-gitern ... It's pretty inefficient and naive but it kind of shows how you might do something ***really freaking weird*** with git that runs exclusively on the client (no special git server required).