1 files changed, 90 insertions, 0 deletions

diff --git a/modules/opendmarc.nix b/modules/opendmarc.nix
new file mode 100644
index 00000000..e18ec82a
--- /dev/null
+++ b/modules/opendmarc.nix
@@ -0,0 +1,90 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.services.opendmarc;
+
+  defaultSock = "local:/run/opendmarc/opendmarc.sock";
+
+  args = [ "-f" "-l"
+           "-p" cfg.socket
+         ] ++ optionals (cfg.configFile != null) [ "-c" cfg.configFile ];
+
+in {
+
+  ###### interface
+
+  options = {
+
+    services.opendmarc = {
+
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Whether to enable the OpenDMARC sender authentication system.";
+      };
+
+      socket = mkOption {
+        type = types.str;
+        default = defaultSock;
+        description = "Socket which is used for communication with OpenDMARC.";
+      };
+
+      user = mkOption {
+        type = types.str;
+        default = "opendmarc";
+        description = "User for the daemon.";
+      };
+
+      group = mkOption {
+        type = types.str;
+        default = "opendmarc";
+        description = "Group for the daemon.";
+      };
+
+      configFile = mkOption {
+        type = types.nullOr types.path;
+        default = null;
+        description = "Additional OpenDMARC configuration.";
+      };
+
+    };
+
+  };
+
+
+  ###### implementation
+
+  config = mkIf cfg.enable {
+
+    users.users = optionalAttrs (cfg.user == "opendmarc") (singleton
+      { name = "opendmarc";
+        group = cfg.group;
+        uid = config.ids.uids.opendmarc;
+      });
+
+    users.groups = optionalAttrs (cfg.group == "opendmarc") (singleton
+      { name = "opendmarc";
+        gid = config.ids.gids.opendmarc;
+      });
+
+    environment.systemPackages = [ pkgs.opendmarc ];
+
+    systemd.services.opendmarc = {
+      description = "OpenDMARC daemon";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+
+      serviceConfig = {
+        ExecStart = "${pkgs.opendmarc}/bin/opendmarc ${escapeShellArgs args}";
+        User = cfg.user;
+        Group = cfg.group;
+        RuntimeDirectory = optional (cfg.socket == defaultSock) "opendmarc";
+        PermissionsStartOnly = true;
+      };
+    };
+
+  };
+}