Add filesWatcher flake

[perso/Immae/Config/Nix.git] / flakes / private / opendmarc / flake.nix

{
  inputs.opendmarc = {
    path = "../../opendmarc";
    type = "path";
  };
  inputs.files-watcher = {
    path = "../../files-watcher";
    type = "path";
  };
  inputs.my-lib = {
    path = "../../lib";
    type = "path";
  };
  inputs.nix-lib.url = "github:NixOS/nixpkgs";

  description = "Private configuration for opendmarc";
  outputs = { self, nix-lib, opendmarc, my-lib, files-watcher }:
    let
      cfg = name': { config, lib, pkgs, name, ... }: {
        imports = [ (my-lib.lib.withNarKey files-watcher "nixosModule") ];
        config = lib.mkIf (name == name') {
          users.users."${config.services.opendmarc.user}".extraGroups = [ "keys" ];
          systemd.services.opendmarc.serviceConfig.Slice = "mail.slice";
          services.opendmarc = {
            enable = true;
            socket = "local:${config.myServices.mail.milters.sockets.opendmarc}";
            configFile = pkgs.writeText "opendmarc.conf" ''
              AuthservID                  HOSTNAME
              FailureReports              false
              FailureReportsBcc           postmaster@immae.eu
              FailureReportsOnNone        true
              FailureReportsSentBy        postmaster@immae.eu
              IgnoreAuthenticatedClients  true
              IgnoreHosts                 ${config.secrets.fullPaths."opendmarc/ignore.hosts"}
              SoftwareHeader              true
              SPFIgnoreResults            true
              SPFSelfValidate             true
              UMask                       002
              '';
            group = config.services.postfix.group;
          };
          services.filesWatcher.opendmarc = {
            restart = true;
            paths = [
              config.secrets.fullPaths."opendmarc/ignore.hosts"
            ];
          };
          secrets.keys = [
            {
              dest = "opendmarc/ignore.hosts";
              user = config.services.opendmarc.user;
              group = config.services.opendmarc.group;
              permissions = "0400";
              text = let
                mxes = lib.attrsets.filterAttrs
                  (n: v: v.mx.enable)
                  config.myEnv.servers;
                in
                  builtins.concatStringsSep "\n" ([
                    config.myEnv.mail.dmarc.ignore_hosts
                  ] ++ lib.mapAttrsToList (n: v: v.fqdn) mxes);
            }
          ];
        };
      };
    in
      opendmarc.outputs //
      { nixosModules = opendmarc.nixosModules or {} // nix-lib.lib.genAttrs ["eldiron" "backup-2"] cfg; };
}