1 files changed, 136 insertions, 0 deletions
diff --git a/services/goaccess.nix b/services/goaccess.nix
new file mode 100644
index 0000000..dd6b26d
--- /dev/null
+++ b/services/goaccess.nix
@@ -0,0 +1,136 @@
+{
+  lib,
+  pkgs,
+  config,
+  inputs,
+  ...
+}: let
+  cfg = config.goaccess;
+in {
+  options."caddy-goaccess" = {
+    timeZone = lib.mkOption {
+      type = lib.types.str;
+      description = "time zone";
+    };
+    logFile = lib.mkOption {
+      type = lib.types.str;
+      description = "caddy log file for goaccess to read (must be chmod 775)";
+    };
+    websocketUrl = lib.mkOption {
+      type = lib.types.str;
+      description = "url that the frontend should use to attach to the service websocket";
+    };
+  };
+  config = let
+    settings = {
+      unix-socket = "/run/caddy-goaccess/socket";
+      ws-url = cfg.websocketUrl;
+
+      date-format = "%s";
+      log-format = "CADDY";
+      tz = cfg.timeZone;
+      log-file = cfg.logFile;
+      geoip-database = inputs.geolite-db;
+
+      output = "/run/caddy-goaccess/index.html";
+      real-time-html = "true";
+      external-assets = "true";
+      all-static-files = "false";
+      html-report-title = "stats@ganymede";
+      hl-header = "true";
+      agent-list = "false";
+      with-output-resolver = "false";
+      http-method = "yes";
+      http-protocol = "yes";
+      "4xx-to-unique-count" = "false";
+      ignore-crawlers = "false";
+      crawlers-only = "false";
+      unknowns-as-crawlers = "false";
+      real-os = "true";
+    };
+  in {
+    configData."goaccess.conf".text = settings |> builtins.mapAttrs (k: v: "${k} ${toString v}") |> builtins.attrValues |> lib.concatStringsSep "\n";
+    services."caddy-goaccess" = {
+      systemd.socket = {
+        description = "caddy-goaccess uds";
+        socketConfig = {
+          ListenStream = "/run/caddy-goaccess/socket";
+          SocketMode = "0660";
+          SocketUser = "goaccess";
+          SocketGroup = "caddy";
+        };
+        wantedBy = ["sockets.target"];
+      };
+
+      systemd.service = {
+        description = "GoAccess Real-Time Log Analyzer";
+        restartIfChanged = true;
+        wants = ["network-online.target" "caddy.service"];
+        after = ["network-online.target" "caddy.service"];
+        requires = ["caddy-goaccess.socket"];
+
+        serviceConfig = {
+          Type = "simple";
+
+          DynamicUser = true;
+          SupplimentaryGroup = "caddy"; # to read caddy log files
+          RuntimeDirectory = "caddy-goaccess"; # /run/caddy-goaccess
+          ExecStart = "${pkgs.goaccess}/bin/goaccess -p ${config.configData."goaccess.conf".path}";
+
+          # hardening stuff
+          AmbientCapabilities = [];
+          CapabilityBoundingSet = [
+            "~CAP_RAWIO"
+            "~CAP_MKNOD"
+            "~CAP_AUDIT_CONTROL"
+            "~CAP_AUDIT_READ"
+            "~CAP_AUDIT_WRITE"
+            "~CAP_SYS_BOOT"
+            "~CAP_SYS_TIME"
+            "~CAP_SYS_MODULE"
+            "~CAP_SYS_PACCT"
+            "~CAP_LEASE"
+            "~CAP_LINUX_IMMUTABLE"
+            "~CAP_IPC_LOCK"
+            "~CAP_BLOCK_SUSPEND"
+            "~CAP_WAKE_ALARM"
+            "~CAP_SYS_TTY_CONFIG"
+            "~CAP_MAC_ADMIN"
+            "~CAP_MAC_OVERRIDE"
+            "~CAP_NET_ADMIN"
+            "~CAP_NET_BROADCAST"
+            "~CAP_NET_RAW"
+            "~CAP_SYS_ADMIN"
+            "~CAP_SYS_PTRACE"
+            "~CAP_SYSLOG"
+          ];
+          DevicePolicy = "closed";
+          KeyringMode = "private";
+          LockPersonality = true;
+          NoNewPrivileges = true;
+          PrivateDevices = true;
+          PrivateMounts = true;
+          PrivateTmp = true;
+          ProtectClock = true;
+          ProtectControlGroups = true;
+          ProtectHome = true;
+          ProtectHostname = true;
+          ProtectKernelLogs = true;
+          ProtectKernelModules = true;
+          ProtectKernelTunables = true;
+          ProtectSystem = "full";
+          RemoveIPC = true;
+          RestrictAddressFamilies = [
+            "AF_UNIX"
+            "AF_INET"
+            "AF_INET6"
+          ];
+          RestrictNamespaces = true;
+          RestrictRealtime = true;
+        };
+
+        wantedBy = ["multi-user.target"];
+      };
+    };
+  };
+}