this post was submitted on 07 Jun 2023
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Lemmy Support

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Support / questions about Lemmy.

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I'm trying this on Ubuntu 22.04 Rust's cargo install seems to keep creating permission problems between what I have to install, compile and what gets published in the cargo "registry", which causes issues at runtime when I run as lemmy:lemmy through systemctl.

If I run: cargo install lemmy_server --target-dir /usr/bin/ --locked --features embed-pictrs as a non-root user, I get permission denied issues with /usr/bin/.future-incompat-report.json and /usr/bin/release

If I run the build as a root user, and then manually copy the binaries to /usr/bin and chmod them to lemmy:lemmy, then try to run as lemmy:lemmy, it appears the binary is trying to access some "registry" files in /root/.cargo/registry (for which of course it does not have permissions.)

How do I fix this?

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[–] KIM_JONG_JUICEBOX@lemmy.ml 0 points 2 years ago (1 children)

Thanks @RoundSparrow

I am able to bring things up and I can create an admin user by visiting the /setup URL.

Problem is, after I create my admin user, the /setup URL appears to still be active.

Is there some step I am missing to disable this /setup page after I have created my admin user?

[–] RoundSparrow@lemmy.ml 0 points 2 years ago (1 children)

There are security/data-exposure issues with this that I raised on Github.... https://github.com/LemmyNet/lemmy/issues/3060 (I'm RocketDerp)

My testing shows that visiting /setup on Lemmy isn't restricted. it behaves differently if you are logged-in or not logged-in. If not logged-in, it presents a form to create an admin user. If logged-in (even as a normal non-admin user) it shows the site configuration.

Since /setup has to be accessible to someone not logged-in, the whole design is a race condition for some script-kiddie to admin-create wen installing on a public remote server. The admin accounts should probably be managed from Linux shell and not from lemmy-ui

[–] KIM_JONG_JUICEBOX@lemmy.ml 1 points 2 years ago (1 children)

Ok, thanks for confirming that I am not entirely insane.

1 - I visited other lemmy instances and saw that the /setup URL was still accessible.

That seems like a huge bug / security issue.

2 - How did you configure and daemonize pictrs?

I don't want to run that as root, so I ended up creating a pictrsxx user

And a systemd service that runs as that user.

/etc/systemd/system/lemmy-pictrsxx.service

Which makes me wonder, what is the purpose of this "embed-pictrs" option.

cargo install lemmy_server --target-dir /usr/bin/ --locked --features embed-pictrs

3 - email

Still can't get smtp to work.

[–] RoundSparrow@lemmy.ml 0 points 2 years ago (1 children)

Which makes me wonder, what is the purpose of this “embed-pictrs” option.

It probably does something to the code to enable the hand-off of the pictures, but doesn't actually setup everything automatically. Not sure, just guessing.

[–] KIM_JONG_JUICEBOX@lemmy.ml 1 points 2 years ago (1 children)

pictrs (when run as a server) runs its own server, but it needs the /usr/bin/magick binary from ImageMagick, and it doesn't do a good job of complaining about it in the logs when it can't find that binary.

[–] RoundSparrow@lemmy.ml 1 points 2 years ago

it's a good catch if indeed you found it runs as root. I wonder of the Ansible instructions create an account for it.