120 lines
4.2 KiB
Nix
120 lines
4.2 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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let
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cfg = config.services.finance-duck;
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address =
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if lib.hasInfix ":" cfg.listenAddress then "[${cfg.listenAddress}]" else cfg.listenAddress;
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validOrigin =
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builtins.match "https?://([A-Za-z0-9]([A-Za-z0-9.-]*[A-Za-z0-9])?|[[][0-9A-Fa-f:]+[]])(:[0-9]+)?" cfg.publicURL
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!= null;
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in
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{
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options.services.finance-duck = {
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enable = lib.mkEnableOption "Finance Duck, a private financial dashboard without application authentication";
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package = lib.mkOption {
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type = lib.types.package;
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description = "Finance Duck package, including the embedded dashboard.";
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};
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publicURL = lib.mkOption {
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type = lib.types.str;
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description = "Exact HTTP(S) browser origin, including any non-default port, without a trailing slash or path.";
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};
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listenAddress = lib.mkOption {
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type = lib.types.str;
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default = "127.0.0.1";
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description = "HTTP listen address. Non-loopback listeners must be isolated by a firewall or VPN.";
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};
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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 = "HTTP listen port; the native module does not open the firewall.";
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};
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environmentFile = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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default = null;
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description = ''
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Absolute runtime environment-file path, never a Nix store path.
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Optional startup fallbacks; both providers can be configured in Settings.
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When configured, the file must exist. For banking, set ENABLEBANKING_APP_ID,
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ENABLEBANKING_KEY_FILE and ENABLEBANKING_REDIRECT_URL together.
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OPENROUTER_API_KEY is the optional AI fallback. For each provider,
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saved UI configuration or explicit removal overrides its environment.
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The environment file may be root:root 0600; the referenced private key must
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be readable by finance-duck (for example root:finance-duck 0640).
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'';
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};
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};
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config = lib.mkIf cfg.enable {
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assertions = [
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{
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assertion = validOrigin;
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message = "services.finance-duck.publicURL must be an exact HTTP(S) origin, without userinfo, path, query or fragment.";
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}
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{
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assertion = cfg.listenAddress != "" && builtins.match "[A-Za-z0-9.:_-]+" cfg.listenAddress != null;
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message = "services.finance-duck.listenAddress must be a nonempty address without brackets or a port.";
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}
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{
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assertion =
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cfg.environmentFile == null
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|| (
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lib.hasPrefix "/" cfg.environmentFile
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&& !lib.hasPrefix "/nix/store/" cfg.environmentFile
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&& builtins.match "/[A-Za-z0-9_./-]+" cfg.environmentFile != null
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&& !(lib.elem ".." (lib.splitString "/" cfg.environmentFile))
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);
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message = "services.finance-duck.environmentFile must be an absolute runtime path outside /nix/store, with no parent-directory traversal.";
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}
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];
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users.groups.finance-duck = { };
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users.users.finance-duck = {
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isSystemUser = true;
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group = "finance-duck";
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home = "/var/lib/finance-duck";
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};
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systemd.services.finance-duck = {
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description = "Finance Duck private financial dashboard";
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wantedBy = [ "multi-user.target" ];
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wants = [ "network-online.target" ];
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after = [ "network-online.target" ];
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environment.HOME = "/var/lib/finance-duck";
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serviceConfig = {
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ExecStart = lib.escapeShellArgs [
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"${cfg.package}/bin/finance-duck"
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"-data"
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"/var/lib/finance-duck"
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"-listen"
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"${address}:${toString cfg.port}"
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"-public-url"
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cfg.publicURL
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];
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User = "finance-duck";
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Group = "finance-duck";
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StateDirectory = "finance-duck";
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StateDirectoryMode = "0700";
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WorkingDirectory = "/var/lib/finance-duck";
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UMask = "0077";
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Restart = "on-failure";
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RestartSec = "5s";
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TimeoutStopSec = "30s";
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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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CapabilityBoundingSet = "";
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}
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// lib.optionalAttrs (cfg.environmentFile != null) {
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EnvironmentFile = cfg.environmentFile;
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};
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};
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};
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}
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