109 lines
3.4 KiB
Nix
109 lines
3.4 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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inherit (lib) mkEnableOption mkIf mkOption optionalString types;
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cfg = config.services.bird2;
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caps = [ "CAP_NET_ADMIN" "CAP_NET_BIND_SERVICE" "CAP_NET_RAW" ];
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in
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{
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###### interface
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options = {
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services.bird2 = {
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enable = mkEnableOption (lib.mdDoc "BIRD Internet Routing Daemon");
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config = mkOption {
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type = types.lines;
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description = lib.mdDoc ''
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BIRD Internet Routing Daemon configuration file.
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<http://bird.network.cz/>
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'';
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};
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autoReload = mkOption {
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type = types.bool;
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default = true;
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description = lib.mdDoc ''
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Whether bird2 should be automatically reloaded when the configuration changes.
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'';
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};
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checkConfig = mkOption {
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type = types.bool;
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default = true;
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description = lib.mdDoc ''
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Whether the config should be checked at build time.
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When the config can't be checked during build time, for example when it includes
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other files, either disable this option or use `preCheckConfig` to create
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the included files before checking.
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'';
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};
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preCheckConfig = mkOption {
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type = types.lines;
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default = "";
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example = ''
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echo "cost 100;" > include.conf
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'';
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description = lib.mdDoc ''
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Commands to execute before the config file check. The file to be checked will be
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available as `bird2.conf` in the current directory.
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Files created with this option will not be available at service runtime, only during
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build time checking.
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'';
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};
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};
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};
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imports = [
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(lib.mkRemovedOptionModule [ "services" "bird" ] "Use services.bird2 instead")
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(lib.mkRemovedOptionModule [ "services" "bird6" ] "Use services.bird2 instead")
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];
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###### implementation
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config = mkIf cfg.enable {
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environment.systemPackages = [ pkgs.bird ];
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environment.etc."bird/bird2.conf".source = pkgs.writeTextFile {
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name = "bird2";
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text = cfg.config;
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checkPhase = optionalString cfg.checkConfig ''
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ln -s $out bird2.conf
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${cfg.preCheckConfig}
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${pkgs.buildPackages.bird}/bin/bird -d -p -c bird2.conf
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'';
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};
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systemd.services.bird2 = {
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description = "BIRD Internet Routing Daemon";
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wantedBy = [ "multi-user.target" ];
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reloadTriggers = lib.optional cfg.autoReload config.environment.etc."bird/bird2.conf".source;
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serviceConfig = {
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Type = "forking";
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Restart = "on-failure";
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User = "bird2";
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Group = "bird2";
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ExecStart = "${pkgs.bird}/bin/bird -c /etc/bird/bird2.conf";
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ExecReload = "${pkgs.bird}/bin/birdc configure";
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ExecStop = "${pkgs.bird}/bin/birdc down";
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RuntimeDirectory = "bird";
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CapabilityBoundingSet = caps;
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AmbientCapabilities = caps;
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ProtectSystem = "full";
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ProtectHome = "yes";
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ProtectKernelTunables = true;
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ProtectControlGroups = true;
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PrivateTmp = true;
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PrivateDevices = true;
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SystemCallFilter = "~@cpu-emulation @debug @keyring @module @mount @obsolete @raw-io";
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MemoryDenyWriteExecute = "yes";
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};
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};
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users = {
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users.bird2 = {
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description = "BIRD Internet Routing Daemon user";
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group = "bird2";
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isSystemUser = true;
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};
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groups.bird2 = { };
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};
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};
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}
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