nixpkgs/nixos/modules/services/security/clamav.nix
Eelco Dolstra 29027fd1e1 Rewrite ‘with pkgs.lib’ -> ‘with lib’
Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
2014-04-14 16:26:48 +02:00

80 lines
1.7 KiB
Nix

{ 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 --config-file=${pkgs.writeText "freshclam.conf" cfg.updater.config}";
};
};
};
}