From e6cfdac5a83d8d2e2664e3b313900b7b1a145114 Mon Sep 17 00:00:00 2001
From: Kyren223 <Kyren223@proton.me>
Date: Tue, 22 Jul 2025 17:05:08 +0300
Subject: Improved flake.nix and added service.nix to run the server as a NixOS
 systemd service

---
 service.nix | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 service.nix

(limited to 'service.nix')

diff --git a/service.nix b/service.nix
new file mode 100644
index 0000000..9e9e437
--- /dev/null
+++ b/service.nix
@@ -0,0 +1,118 @@
+inputs:
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+let
+  cfg = config.services.eko;
+in
+{
+  meta.maintainers = with lib.maintainers; [ kyren223 ];
+
+  options.services.eko = {
+    enable = lib.mkEnableOption "eko service";
+
+    package = lib.mkPackageOption inputs.self.packages.${pkgs.stdenv.hostPlatform.system}.eko-server { };
+
+    dataDir = lib.mkOption {
+      description = "Eko data directory";
+      default = "/var/lib/eko";
+      type = lib.types.path;
+    };
+
+    logDir = lib.mkOption {
+      description = "Eko logs directory";
+      default = "/var/log/eko";
+      type = lib.types.path;
+    };
+
+    tosFile = lib.mkOption {
+      description = "Eko terms of service file";
+      default = "/etc/eko/tos.md";
+      type = lib.types.path;
+    };
+
+    privacyFile = lib.mkOption {
+      description = "Eko privacy policy file";
+      default = "/etc/eko/privacy.md";
+      type = lib.types.path;
+    };
+
+    certFile = lib.mkOption {
+      description = "Eko certificate key file";
+      type = lib.types.path;
+    };
+
+  };
+
+  config = lib.mkIf cfg.enable {
+
+    systemd.services.eko = {
+      description = "Eko - a secure terminal-native social media platform";
+
+      wants = [ "network-online.target" ];
+      after = [ "network-online.target" ];
+      wantedBy = [ "multi-user.target" ];
+
+      reloadTriggers = lib.mapAttrsToList (_: v: v.source or null) (
+        lib.filterAttrs (n: _: lib.hasPrefix "eko/" n) config.environment.etc
+      );
+
+      environment = {
+        EKO_SERVER_CERT_FILE = cfg.certFile;
+        EKO_SERVER_LOG_DIR = cfg.logDir;
+        EKO_SERVER_TOS_FILE = cfg.tosFile;
+        EKO_SERVER_PRIVACY_FILE = cfg.privacyFile;
+      };
+
+      serviceConfig = {
+        Restart = "on-failure";
+        RestartSec = "10s";
+
+        ExecStart = "${cfg.package}/bin/eko-server";
+        ExecReload = "${pkgs.coreutils}/bin/kill -SIGHUP $MAINPID";
+
+        ConfigurationDirectory = "eko";
+        StateDirectory = "eko";
+        StateDirectoryMode = "0700";
+        LogsDirectory = "eko";
+        LogDirectoryMode = "0700";
+        WorkingDirectory = cfg.dataDir;
+        Type = "simple";
+
+        User = "eko";
+        Group = "eko";
+
+        # Hardening
+        ProtectHome = true;
+        ProtectHostname = true;
+        ProtectKernelLogs = true;
+        ProtectKernelModules = true;
+        ProtectKernelTunables = true;
+        ProtectProc = "invisible";
+        RestrictAddressFamilies = [
+          "AF_INET"
+          "AF_INET6"
+          "AF_UNIX"
+        ];
+        RestrictNamespaces = true;
+        RestrictRealtime = true;
+        RestrictSUIDSGID = true;
+        PrivateUsers = true;
+        PrivateTmp = true;
+        ProtectSystem = "strict";
+        NoNewPrivileges = true;
+      };
+    };
+
+    users.groups.eko = { };
+    users.users.eko = {
+      createHome = false;
+      isNormalUser = true;
+      group = "eko";
+    };
+  };
+
+}
-- 
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