Set of script to facilitate automatic setting of GIT_AUTHOR_NAME and GIT_AUTHOR_EMAIL based on the SSH fingerprint of the currently logged in user.
The set-git-author script should be called when the user logins in using and SSH key. It then checks the SSH key fingerprint which is available in ssh-add agains a list in /etc/gitusers, and sets the GIT_AUTHOR_* environment variables based on the found values. This file should contain three pipe seperated values per line:
aa:bb:cc:dd:ee:ff:11:22:33:44:55:66:77:88:99:00|Nick Douma|n.douma@nekoconeko.nl
An script has been provided that can create this file automatically for you based on an existing SSH authorized_keys file. By default it uses the one for root, you can override this behavious by passing the environment variable called AUTHORIZED_KEYS_FILE.
If the provided git pre-commit hook is activated, it checks if the user that is trying to commit has a valid SSH key in ssh-add. If so, it checks if the author of the commit matches the committer, which signifies that the first script did not change the GIT_AUTHOR_* environment variables on login for some reason. It then stops the commit and provides the user with the necessary steps to properly set his author info.