106 lines
3.2 KiB
Nix
106 lines
3.2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.stalwart-mail;
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configFormat = pkgs.formats.toml { };
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configFile = configFormat.generate "stalwart-mail.toml" cfg.settings;
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dataDir = "/var/lib/stalwart-mail";
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in {
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options.services.stalwart-mail = {
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enable = mkEnableOption (mdDoc "the Stalwart all-in-one email server");
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package = mkPackageOption pkgs "stalwart-mail" { };
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settings = mkOption {
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inherit (configFormat) type;
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default = { };
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description = mdDoc ''
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Configuration options for the Stalwart email server.
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See <https://stalw.art/docs/category/configuration> for available options.
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By default, the module is configured to store everything locally.
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'';
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};
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};
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config = mkIf cfg.enable {
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# Default config: all local
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services.stalwart-mail.settings = {
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global.tracing.method = mkDefault "stdout";
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global.tracing.level = mkDefault "info";
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queue.path = mkDefault "${dataDir}/queue";
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report.path = mkDefault "${dataDir}/reports";
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store.db.path = mkDefault "${dataDir}/data/index.sqlite3";
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store.blob.type = mkDefault "local";
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store.blob.local.path = mkDefault "${dataDir}/data/blobs";
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resolver.type = mkDefault "system";
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};
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systemd.services.stalwart-mail = {
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wantedBy = [ "multi-user.target" ];
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after = [ "local-fs.target" "network.target" ];
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preStart = ''
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mkdir -p ${dataDir}/{queue,reports,data/blobs}
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'';
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serviceConfig = {
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ExecStart =
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"${cfg.package}/bin/stalwart-mail --config=${configFile}";
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# Base from template resources/systemd/stalwart-mail.service
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Type = "simple";
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LimitNOFILE = 65536;
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KillMode = "process";
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KillSignal = "SIGINT";
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Restart = "on-failure";
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RestartSec = 5;
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StandardOutput = "syslog";
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StandardError = "syslog";
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SyslogIdentifier = "stalwart-mail";
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DynamicUser = true;
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User = "stalwart-mail";
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StateDirectory = "stalwart-mail";
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# Bind standard privileged ports
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AmbientCapabilities = [ "CAP_NET_BIND_SERVICE" ];
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CapabilityBoundingSet = [ "CAP_NET_BIND_SERVICE" ];
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# Hardening
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DeviceAllow = [ "" ];
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LockPersonality = true;
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MemoryDenyWriteExecute = true;
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PrivateDevices = true;
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PrivateUsers = false; # incompatible with CAP_NET_BIND_SERVICE
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ProcSubset = "pid";
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PrivateTmp = true;
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ProtectClock = true;
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ProtectControlGroups = true;
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ProtectHome = true;
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ProtectHostname = true;
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ProtectKernelLogs = true;
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ProtectKernelModules = true;
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ProtectKernelTunables = true;
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ProtectProc = "invisible";
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ProtectSystem = "strict";
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RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
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RestrictNamespaces = true;
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RestrictRealtime = true;
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RestrictSUIDSGID = true;
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SystemCallArchitectures = "native";
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SystemCallFilter = [ "@system-service" "~@privileged" ];
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UMask = "0077";
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};
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};
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# Make admin commands available in the shell
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environment.systemPackages = [ cfg.package ];
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};
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meta = {
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maintainers = with maintainers; [ happysalada pacien ];
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};
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}
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