79 lines
2.3 KiB
Nix
79 lines
2.3 KiB
Nix
with import ./lib;
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{ config, pkgs, ... }: let
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cfg = config.tv.slock;
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in {
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options.tv.slock = {
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enable = mkEnableOption "tv.slock";
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package = mkOption {
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default = pkgs.writeDashBin "slock" ''
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set -efu
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display=''${DISPLAY#:}
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service=slock-$LOGNAME@$display.service
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exec ${pkgs.systemd}/bin/systemctl start "$service"
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'';
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type = types.package;
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};
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user = mkOption {
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type = types.user;
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};
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};
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config = mkIf cfg.enable {
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security.polkit.extraConfig = /* js */ ''
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polkit.addRule(function(action, subject) {
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if (action.id === "org.freedesktop.systemd1.manage-units" &&
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subject.user === ${toJSON cfg.user.name} &&
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/^slock-${cfg.user.name}@[0-9]+\.service$/.test(action.lookup("unit")) ) {
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return polkit.Result.YES;
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}
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});
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'';
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systemd.services."slock-${cfg.user.name}@" = {
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conflicts = [
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"picom@%i.target"
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];
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environment = {
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DISPLAY = ":%I";
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LD_PRELOAD = pkgs.runCommandCC "slock-${cfg.user.name}.so" {
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passAsFile = ["text"];
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text = /* c */ ''
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#include <shadow.h>
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#include <unistd.h>
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static struct spwd entry = {
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.sp_namp = "",
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.sp_pwdp =
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${toC config.users.users.${cfg.user.name}.hashedPassword},
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.sp_lstchg = 0,
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.sp_min = 0,
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.sp_max = 0,
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.sp_warn = 0,
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.sp_inact = 0,
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.sp_expire = 0,
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.sp_flag = 0,
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};
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extern struct spwd *getspnam(const char *name) { return &entry; }
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extern int setgroups(size_t size, const gid_t *list) { return 0; }
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extern int setgid(gid_t gid) { return 0; }
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extern int setuid(uid_t uid) { return 0; }
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'';
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} /* sh */ ''
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gcc -Wall -shared -o $out -xc "$textPath"
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'';
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};
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restartIfChanged = false;
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serviceConfig = {
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ExecStart = "${pkgs.slock}/bin/slock";
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ExecStopPost =
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"+${pkgs.systemd}/bin/systemctl start xsession@%i.target";
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OOMScoreAdjust = -1000;
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Restart = "on-failure";
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RestartSec = "100ms";
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StartLimitBurst = 0;
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SyslogIdentifier = "slock";
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User = cfg.user.name;
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};
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};
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};
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}
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