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A GTK4 SSH-askpass in Zig
- WD-42 3mo agoWould love to see more projects using gtk and zig. Always nice to have another language option.
- gen2brain 3mo agoNice, I just use lxqt-openssh-askpass, but I am on X11. A lighter alternative (for single-text input) would be FLTK. Version 1.4 is really nice, with Wayland support, and they even draw custom window decorations on GNOME. Both Cairo and FLTK should be able to compile with -X; not sure, though, about the status of the Zig bindings.
- zem 3mo agofltk is c++ based which makes language bindings significantly harder in general. gtk is c based which worked out really well in that aspect.
- gen2brain 3mo agoSure, you need to wrap it in C, but there is also `cfltk` that is maintained and used in Rust bindings. Btw., the difference in memory usage is huge with GTK4. FLTK hello world is ~10M, GTK3 is ~15M, GTK4 is 40M! With Cairo rendering, it's about 30M, but still a lot.
- zem 3mo agoah neat, I wasn't aware that cfltk was already used by rust.
- Levitating 3mo agoGTK4 memory usage is ludicrous
- fithisux 3mo agoThere is cflt and Freebasic FLTK
- bflesch 3mo agoLove the tab title shenanigans when switching to and from the tab.
- hparadiz 3mo agoThese implementations really need to also include fingerprint sensor support
- quotemstr 3mo agoPAM really needs to be ravamped and support for (among other things) running multiple stacks in par@llel added. This way you could ask for a password OR a fingerprint
- hparadiz 3mo agoKeypassxc does it perfectly.
- quotemstr 3mo agoEveryone doing parallel biometric and password authentication on Linux today is either running two PAM stacks in parallel (which is meta-policy that kind of defeats the purpose of PAM) or just bypassing PAM entirely.
- timhh 3mo agoI'm vaguely considering rewriting PAM in Rust. It's definitely something that would benefit from Rust's extra security and the code quality isn't that great. Nor is the UX. What "among other things" were you thinking of?
- quotemstr 3mo agoImplementation language is incidental. Rust is... fine, I guess? But I wouldn't mandate modules use it. What's important is to move PAM out of process and sandbox the process host (using landlock, namespaces like bwrap, whatever) so we can run sensitive code with least-privilege on both ends.
- timhh 3mo agoYeah I always thought the whole architecture of PAM being a library is weird. A sane person would have made it a Daemon that processes talk to surely? Really it should probably be part of SystemD, but I know that would anger the anti-SystemD zealots.
- porridgeraisin 3mo agoI wrap `pinentry` (which is in the dependency trees of gnupg, pacman, gvfs, udisks2 and other software that you can de-facto depend on on desktops) inside my own simple askpass. $ cat ~/scripts/pinentry-askpass #!/usr/bin/env bash pinentry <<INPUT | grep '^D ' | cut -c 3- SETPROMPT Password: GETPIN INPUT $ cat ~/.bashrc | grep ASKPASS export SUDO_ASKPASS="$HOME/scripts/pinentry-askpass" export SSH_ASKPASS="$SUDO_ASKPASS" It automatically launches the GTK, TTY, or QT version depending on your environment. It's also useful for agents to use sudo, you can write in instructions to tool-call `sudo -A` and you get a GUI popup to enter the password, and the agent continues from there. And since the "prompt" in pinentry can be customised... you can get the agent to set up a temporary askpass, which replaces "Password:" in the prompt with questions like "Can I delete this old log file in /var?" and you enter your password to authorise.
- aorth 3mo agoAny reason you don't use `pinentry-gnome3` from the `pinentry` package? Your wrapper is clever but doesn't work with gpg-agent.
- porridgeraisin 3mo agoNo reason, I always thought launching pinentry directly chose the right one out of pinentry, pinentry-curses, pinentry-emacs, pinentry-gnome3, pinentry-gtk, pinentry-qt, pinentry-tty since it always worked for me on xfce+arch+programs I have used. You can change it I suppose, I don't thing I use gpg-agent often.
- hackingboy298 3mo agothis is realy good and helpfull information thanks.
- DannyBee 3mo agoWhenever someone writes "with hand-written bindings" I read "will stop working 8 minutes after the next release"
- pseudony 3mo agoThere are tools to generate bindings. They probably meant it as a marker of quality. And in languages like zig or odin which are quite similar to C in many ways, writing bindings to C code really isn’t bad. It is so easy that I decided to write my own bindings in Odin to sqlite - bindings exist but it really was so very easy that I didn’t want to bring in a generator or another dependency.
- danudey 3mo agoNoticed that when I build this it ends up with direct linking against a half-dozen libraries it doesn't actually use, at least on Ubuntu. Fixed it by replacing the linking commands with this: exe_mod.linkSystemLibrary("gtk-4", .{ .use_pkg_config = .no }); exe_mod.linkSystemLibrary("gobject-2.0", .{}); In my case, at least, this doesn't change the full library tree because gtk-4 still links against all of the libraries that are removed from this binary's list, but it does mean that programs which calculate dependencies, like dpkg-shlibdeps, won't report spurious "required" dependencies when analyzing the binary. When building on Ubuntu 26.04, the binary no longer directly links against lib{pango, cairo, pangocairo, cairo-gobject, harfbuzz, gdk_pixbuf, graphene, gio, vulkan}. Can't create an account on the site so I figured I'd post this here. If you're going for absolute minimalism this seems like another step in the right direction for anyone building on a more 'gratuitous' GTK build (such as Ubuntu's)