89 lines
2.7 KiB
Nix
89 lines
2.7 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.boot.initrd.unl0kr;
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in
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{
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options.boot.initrd.unl0kr = {
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enable = lib.mkEnableOption "unl0kr in initrd" // {
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description = ''
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Whether to enable the unl0kr on-screen keyboard in initrd to unlock LUKS.
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'';
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};
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};
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config = lib.mkIf cfg.enable {
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meta.maintainers = with lib.maintainers; [ tomfitzhenry ];
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assertions = [
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{
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assertion = cfg.enable -> config.boot.initrd.systemd.enable;
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message = "boot.initrd.unl0kr is only supported with boot.initrd.systemd.";
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}
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];
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boot.initrd.systemd = {
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storePaths = with pkgs; [
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"${pkgs.gnugrep}/bin/grep"
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libinput
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xkeyboard_config
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"${config.boot.initrd.systemd.package}/lib/systemd/systemd-reply-password"
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"${pkgs.unl0kr}/bin/unl0kr"
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];
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services = {
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unl0kr-ask-password = {
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description = "Forward Password Requests to unl0kr";
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conflicts = [
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"emergency.service"
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"initrd-switch-root.target"
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"shutdown.target"
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];
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unitConfig.DefaultDependencies = false;
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after = [
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"systemd-vconsole-setup.service"
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"udev.service"
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];
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before = [
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"shutdown.target"
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];
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script = ''
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# This script acts as a Password Agent: https://systemd.io/PASSWORD_AGENTS/
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DIR=/run/systemd/ask-password/
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# If a user has multiple encrypted disks, the requests might come in different times,
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# so make sure to answer as many requests as we can. Once boot succeeds, other
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# password agents will be responsible for watching for requests.
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while [ -d $DIR ] && [ "$(ls -A $DIR/ask.*)" ];
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do
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for file in `ls $DIR/ask.*`; do
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socket="$(cat "$file" | ${pkgs.gnugrep}/bin/grep "Socket=" | cut -d= -f2)"
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${pkgs.unl0kr}/bin/unl0kr | ${config.boot.initrd.systemd.package}/lib/systemd/systemd-reply-password 1 "$socket"
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done
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done
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'';
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};
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};
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paths = {
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unl0kr-ask-password = {
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description = "Forward Password Requests to unl0kr";
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conflicts = [
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"emergency.service"
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"initrd-switch-root.target"
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"shutdown.target"
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];
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unitConfig.DefaultDependencies = false;
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before = [
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"shutdown.target"
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"paths.target"
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"cryptsetup.target"
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];
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wantedBy = [ "sysinit.target" ];
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pathConfig = {
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DirectoryNotEmpty = "/run/systemd/ask-password";
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MakeDirectory = true;
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};
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};
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};
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};
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};
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}
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