it-infra/nixops/avscan-module.nix

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{ config, pkgs, lib, ... }:
with lib;
let
avscan = pkgs.writeScript "avscan" ''
#!${pkgs.bash}/bin/bash
for user in $(cut -d":" -f1 /etc/passwd); do
if [ -d "/home/$user" ]; then
nice -15 ${pkgs.sudo}/bin/sudo -u $user ${pkgs.clamav}/bin/clamscan --recursive --quiet --infected /home/$user
fi
done
'';
cfg = config.services.avscan;
in
{
options.services.avscan = {
enable = mkOption {
type = types.bool;
default = false;
description = "Enable antivirus scan";
};
};
config = mkIf cfg.enable {
services.clamav.updater.enable = true;
services.clamav.updater.interval = "daily";
services.clamav.updater.frequency = 1;
systemd.services.avscan = {
description = "Antivirus scan";
serviceConfig = {
Type = "oneshot";
User = "root";
Group = "root";
ExecStart = "${avscan}";
};
};
systemd.timers.avscan = {
description = "Antivirus scan";
wantedBy = [ "timers.target" ];
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timerConfig.OnCalendar = "Mon *-*-* 13:00:00";
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};
};
}