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|
{ config, lib, pkgs, ... }:
let
inherit (lib) mkEnableOption mkIf mkOption types;
generic = variant:
let
cfg = config.services.${variant};
pkg = pkgs.${variant};
birdBin = if variant == "bird6" then "bird6" else "bird";
birdc = if variant == "bird6" then "birdc6" else "birdc";
descr =
{ bird = "1.9.x with IPv4 suport";
bird6 = "1.9.x with IPv6 suport";
bird2 = "2.x";
}.${variant};
configFile = pkgs.stdenv.mkDerivation {
name = "${variant}.conf";
text = cfg.config;
preferLocalBuild = true;
buildCommand = ''
echo -n "$text" > $out
${pkg}/bin/${birdBin} -d -p -c $out
'';
};
in {
###### interface
options = {
services.${variant} = {
enable = mkEnableOption "BIRD Internet Routing Daemon (${descr})";
config = mkOption {
type = types.lines;
description = ''
BIRD Internet Routing Daemon configuration file.
<link xlink:href='http://bird.network.cz/'/>
'';
};
};
};
###### implementation
config = mkIf cfg.enable {
environment.systemPackages = [ pkg ];
systemd.services.${variant} = {
description = "BIRD Internet Routing Daemon (${descr})";
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "forking";
Restart = "on-failure";
ExecStart = "${pkg}/bin/${birdBin} -c ${configFile} -u ${variant} -g ${variant}";
ExecReload = "${pkg}/bin/${birdc} configure";
ExecStop = "${pkg}/bin/${birdc} down";
CapabilityBoundingSet = [ "CAP_CHOWN" "CAP_FOWNER" "CAP_DAC_OVERRIDE" "CAP_SETUID" "CAP_SETGID"
# see bird/sysdep/linux/syspriv.h
"CAP_NET_BIND_SERVICE" "CAP_NET_BROADCAST" "CAP_NET_ADMIN" "CAP_NET_RAW" ];
ProtectSystem = "full";
ProtectHome = "yes";
SystemCallFilter="~@cpu-emulation @debug @keyring @module @mount @obsolete @raw-io";
MemoryDenyWriteExecute = "yes";
};
};
users = {
extraUsers.${variant} = {
description = "BIRD Internet Routing Daemon user";
group = variant;
};
extraGroups.${variant} = {};
};
};
};
in
{
imports = map generic [ "bird" "bird6" "bird2" ];
}
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