78 lines
2.1 KiB
Nix
78 lines
2.1 KiB
Nix
{ self }:
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{ config, lib, pkgs, ... }:
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let
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cfg = config.services.essence;
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in
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{
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options.services.essence = {
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enable = lib.mkEnableOption "Essence Quebec gas price map";
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port = lib.mkOption {
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type = lib.types.port;
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default = 8080;
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description = "Port the Essence web server listens on.";
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};
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dataDir = lib.mkOption {
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type = lib.types.str;
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default = "/var/lib/essence";
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description = "Directory where the SQLite database is stored.";
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};
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openFirewall = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = "Whether to open the firewall for the Essence web server port.";
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};
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package = lib.mkOption {
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type = lib.types.package;
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default = self.packages.${pkgs.system}.default;
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defaultText = lib.literalExpression "self.packages.\${pkgs.system}.default";
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description = "The Essence package to use.";
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};
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};
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config = lib.mkIf cfg.enable {
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systemd.services.essence = {
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description = "Essence Quebec - Gas price map";
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wantedBy = [ "multi-user.target" ];
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after = [ "network-online.target" ];
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wants = [ "network-online.target" ];
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environment = {
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PORT = toString cfg.port;
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ESSENCE_DB = "${cfg.dataDir}/essence.db";
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};
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serviceConfig = {
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ExecStart = lib.getExe cfg.package;
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Restart = "on-failure";
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RestartSec = 5;
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DynamicUser = true;
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StateDirectory = "essence";
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StateDirectoryMode = "0750";
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# Hardening
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NoNewPrivileges = true;
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ProtectSystem = "strict";
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ProtectHome = true;
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PrivateTmp = true;
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PrivateDevices = true;
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ProtectKernelTunables = true;
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ProtectKernelModules = true;
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ProtectControlGroups = true;
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RestrictSUIDSGID = true;
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RestrictNamespaces = true;
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LockPersonality = true;
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MemoryDenyWriteExecute = true;
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RestrictRealtime = true;
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SystemCallFilter = [ "@system-service" "~@privileged" ];
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};
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};
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networking.firewall.allowedTCPPorts = lib.mkIf cfg.openFirewall [ cfg.port ];
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};
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}
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