98 lines
2.9 KiB
Nix
98 lines
2.9 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.networkd-dispatcher;
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in {
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options = {
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services.networkd-dispatcher = {
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enable = mkEnableOption (mdDoc ''
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Networkd-dispatcher service for systemd-networkd connection status
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change. See [https://gitlab.com/craftyguy/networkd-dispatcher](upstream instructions)
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for usage.
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'');
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rules = mkOption {
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default = {};
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example = lib.literalExpression ''
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{ "restart-tor" = {
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onState = ["routable" "off"];
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script = '''
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#!''${pkgs.runtimeShell}
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if [[ $IFACE == "wlan0" && $AdministrativeState == "configured" ]]; then
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echo "Restarting Tor ..."
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systemctl restart tor
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fi
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exit 0
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''';
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};
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};
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'';
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description = lib.mdDoc ''
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Declarative configuration of networkd-dispatcher rules. See
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[https://gitlab.com/craftyguy/networkd-dispatcher](upstream instructions)
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for an introduction and example scripts.
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'';
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type = types.attrsOf (types.submodule {
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options = {
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onState = mkOption {
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type = types.listOf (types.enum [
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"routable" "dormant" "no-carrier" "off" "carrier" "degraded"
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"configuring" "configured"
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]);
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default = null;
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description = lib.mdDoc ''
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List of names of the systemd-networkd operational states which
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should trigger the script. See <https://www.freedesktop.org/software/systemd/man/networkctl.html>
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for a description of the specific state type.
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'';
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};
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script = mkOption {
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type = types.lines;
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description = lib.mdDoc ''
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Shell commands executed on specified operational states.
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'';
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};
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};
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});
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};
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};
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};
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config = mkIf cfg.enable {
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systemd = {
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packages = [ pkgs.networkd-dispatcher ];
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services.networkd-dispatcher = {
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wantedBy = [ "multi-user.target" ];
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# Override existing ExecStart definition
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serviceConfig.ExecStart = let
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scriptDir = pkgs.symlinkJoin {
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name = "networkd-dispatcher-script-dir";
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paths = lib.mapAttrsToList (name: cfg:
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(map(state:
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pkgs.writeTextFile {
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inherit name;
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text = cfg.script;
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destination = "/${state}.d/${name}";
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executable = true;
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}
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) cfg.onState)
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) cfg.rules;
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};
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in [
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""
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"${pkgs.networkd-dispatcher}/bin/networkd-dispatcher -v --script-dir ${scriptDir} $networkd_dispatcher_args"
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];
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};
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};
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};
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}
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