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{ config, lib, pkgs, ... }:
with lib;
let
clamavUser = "clamav";
stateDir = "/var/lib/clamav";
clamavGroup = clamavUser;
cfg = config.services.clamav;
in
{
###### interface
options = {
services.clamav = {
updater = {
enable = mkOption {
default = false;
description = ''
Whether to enable automatic ClamAV virus definitions database updates.
'';
};
frequency = mkOption {
default = 12;
description = ''
Number of database checks per day.
'';
};
config = mkOption {
default = "";
description = ''
Extra configuration for freshclam. Contents will be added verbatim to the
configuration file.
'';
};
};
};
};
###### implementation
config = mkIf cfg.updater.enable {
environment.systemPackages = [ pkgs.clamav ];
users.extraUsers = singleton
{ name = clamavUser;
uid = config.ids.uids.clamav;
description = "ClamAV daemon user";
home = stateDir;
};
users.extraGroups = singleton
{ name = clamavGroup;
gid = config.ids.gids.clamav;
};
services.clamav.updater.config = ''
DatabaseDirectory ${stateDir}
Foreground yes
Checks ${toString cfg.updater.frequency}
DatabaseMirror database.clamav.net
'';
jobs = {
clamav_updater = {
name = "clamav-updater";
startOn = "started network-interfaces";
stopOn = "stopping network-interfaces";
preStart = ''
mkdir -m 0755 -p ${stateDir}
chown ${clamavUser}:${clamavGroup} ${stateDir}
'';
exec = "${pkgs.clamav}/bin/freshclam --daemon --config-file=${pkgs.writeText "freshclam.conf" cfg.updater.config}";
};
};
};
}
|