113 lines
2.6 KiB
Nix
113 lines
2.6 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.opendkim;
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defaultSock = "local:/run/opendkim/opendkim.sock";
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args = [ "-f" "-l"
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"-p" cfg.socket
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"-d" cfg.domains
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"-k" cfg.keyFile
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"-s" cfg.selector
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] ++ optionals (cfg.configFile != null) [ "-x" cfg.configFile ];
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in {
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###### interface
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options = {
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services.opendkim = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to enable the OpenDKIM sender authentication system.";
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};
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socket = mkOption {
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type = types.str;
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default = defaultSock;
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description = "Socket which is used for communication with OpenDKIM.";
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};
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user = mkOption {
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type = types.str;
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default = "opendkim";
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description = "User for the daemon.";
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};
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group = mkOption {
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type = types.str;
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default = "opendkim";
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description = "Group for the daemon.";
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};
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domains = mkOption {
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type = types.str;
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default = "csl:${config.networking.hostName}";
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example = "csl:example.com,mydomain.net";
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description = ''
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Local domains set (see <literal>opendkim(8)</literal> for more information on datasets).
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Messages from them are signed, not verified.
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'';
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};
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keyFile = mkOption {
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type = types.path;
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description = "Secret key file used for signing messages.";
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};
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selector = mkOption {
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type = types.str;
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description = "Selector to use when signing.";
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};
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configFile = mkOption {
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type = types.nullOr types.path;
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default = null;
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description = "Additional opendkim configuration.";
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};
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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users.extraUsers = optionalAttrs (cfg.user == "opendkim") (singleton
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{ name = "opendkim";
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group = cfg.group;
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uid = config.ids.uids.opendkim;
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});
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users.extraGroups = optionalAttrs (cfg.group == "opendkim") (singleton
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{ name = "opendkim";
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gid = config.ids.gids.opendkim;
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});
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environment.systemPackages = [ pkgs.opendkim ];
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systemd.services.opendkim = {
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description = "OpenDKIM signing and verification daemon";
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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ExecStart = "${pkgs.opendkim}/bin/opendkim ${escapeShellArgs args}";
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User = cfg.user;
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Group = cfg.group;
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RuntimeDirectory = optional (cfg.socket == defaultSock) "opendkim";
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};
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};
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};
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}
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