wkd: Init

machines/renge/configuration.nix

@@ -33,6 +33,9 @@
     };
     wireguard.home.enable = true;
     infovhost.enable = true;
+    wkd = {
+      enable = true;
+    };
   };
 
   networking.hostName = "renge";

modules/default.nix

@@ -67,6 +67,7 @@
     ./udev.nix
     ./unfree.nix
     ./wireguard
+    ./wkd
   ];
 
   config = lib.mkMerge [

modules/wkd/default.nix

@@ -0,0 +1,49 @@
+# SPDX-FileCopyrightText: 2024 Simon Bruder <simon@sbruder.de>
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+{ config, lib, ... }:
+let
+  cfg = config.sbruder.wkd;
+
+  toFqdn = domain: "openpgpkey.${domain}";
+in
+{
+  options.sbruder.wkd = {
+    enable = lib.mkEnableOption "Web Key Directory";
+    domain = lib.mkOption {
+      type = lib.types.str;
+      description = "The main domain to listen on. The actual fqdn will be openpgpkey.<domain>.";
+      default = "sbruder.de";
+    };
+    domains = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      description = "Additional domains to serve.";
+      default = [ ];
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    sbruder.static-webserver.vhosts."${toFqdn cfg.domain}" = {
+      redirects = map toFqdn cfg.domains;
+      user.name = "wkd";
+    };
+
+    services.nginx.virtualHosts."${toFqdn cfg.domain}" = {
+      locations."^~ /.well-known/openpgpkey" =
+        let
+          # workaround for nginx dropping parent headers
+          # see https://github.com/yandex/gixy/blob/master/docs/en/plugins/addheaderredefinition.md
+          parentHeaders = lib.concatStringsSep "\n" (lib.filter
+            (lib.hasPrefix "add_header ")
+            (lib.splitString "\n" config.services.nginx.commonHttpConfig));
+        in
+        {
+          extraConfig = ''
+            ${parentHeaders}
+            add_header Access-Control-Allow-Origin * always;
+          '';
+        };
+    };
+  };
+}