#55661 /etc/ssh/authorized_keys.d contains keys that have been removed

Message #5 received at submit@debbugs.gnu.org (full text, mbox, reply):

From: Ludovic Courtès <ludo@gnu.org>

To: bug-guix@gnu.org

Subject: /etc/ssh/authorized_keys.d contains keys that have been removed

Date: Thu, 26 May 2022 17:02:00 +0200

In the wake of <https://issues.guix.gnu.org/55359#3>, I realized that
/etc/ssh/authorized_keys.d is stateful: we copy files from the
authorized-key directory there, but files already present remain.
IOW, keys remain authorized.

Why are we copying that directory instead of making a symlink to the
directory computed by ‘authorized-key-directory’ that’s in /gnu/store?

This is explained in ‘openssh-activation’:

        ;; 'sshd' complains if the authorized-key directory and its parents
        ;; are group-writable, which rules out /gnu/store.  Thus we copy the
        ;; authorized-key directory to /etc.

Anyway, that code does intend remove the directory before copying it,
but there’s a typo:

  (delete-file-recursively "/etc/authorized_keys.d")

Can you spot it?

Ludo’.

Message #14 received at 55661-done@debbugs.gnu.org (full text, mbox, reply):

From: Ludovic Courtès <ludo@gnu.org>

To: 55661-done@debbugs.gnu.org

Subject: Re: bug#55661: /etc/ssh/authorized_keys.d contains keys that have been removed

Date: Thu, 26 May 2022 17:20:34 +0200

Ludovic Courtès <ludo@gnu.org> skribis:

> Anyway, that code does intend remove the directory before copying it,
> but there’s a typo:
>
>   (delete-file-recursively "/etc/authorized_keys.d")

Fixed in 4577f3c6b60ea100e521c246fb169d6c05214b20.

Ludo'.

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