1 files changed, 61 insertions, 0 deletions
diff --git a/nixos/modules/services/networking/dnscrypt-proxy2.nix b/nixos/modules/services/networking/dnscrypt-proxy2.nix
new file mode 100644
index 000000000000..e48eb729103b
--- /dev/null
+++ b/nixos/modules/services/networking/dnscrypt-proxy2.nix
@@ -0,0 +1,61 @@
+{ config, lib, pkgs, ... }: with lib;
+
+let
+  cfg = config.services.dnscrypt-proxy2;
+in
+
+{
+  options.services.dnscrypt-proxy2 = {
+    enable = mkEnableOption "dnscrypt-proxy2";
+
+    settings = mkOption {
+      description = ''
+        Attrset that is converted and passed as TOML config file.
+        For available params, see: <link xlink:href="https://github.com/DNSCrypt/dnscrypt-proxy/blob/master/dnscrypt-proxy/example-dnscrypt-proxy.toml"/>
+      '';
+      example = literalExample ''
+        {
+          sources.public-resolvers = {
+            urls = [ "https://download.dnscrypt.info/resolvers-list/v2/public-resolvers.md" ];
+            cache_file = "public-resolvers.md";
+            minisign_key = "RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3";
+            refresh_delay = 72;
+          };
+        }
+      '';
+      type = types.attrs;
+      default = {};
+    };
+
+    configFile = mkOption {
+      description = ''
+        Path to TOML config file. See: <link xlink:href="https://github.com/DNSCrypt/dnscrypt-proxy/blob/master/dnscrypt-proxy/example-dnscrypt-proxy.toml"/>
+        If this option is set, it will override any configuration done in options.services.dnscrypt-proxy2.settings.
+      '';
+      example = "/etc/dnscrypt-proxy/dnscrypt-proxy.toml";
+      type = types.path;
+      default = pkgs.runCommand "dnscrypt-proxy.toml" {
+        json = builtins.toJSON cfg.settings;
+        passAsFile = [ "json" ];
+      } ''
+        ${pkgs.remarshal}/bin/json2toml < $jsonPath > $out
+      '';
+      defaultText = literalExample "TOML file generated from services.dnscrypt-proxy2.settings";
+    };
+  };
+
+  config = mkIf cfg.enable {
+
+    networking.nameservers = lib.mkDefault [ "127.0.0.1" ];
+
+    systemd.services.dnscrypt-proxy2 = {
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      serviceConfig = {
+        AmbientCapabilities = "CAP_NET_BIND_SERVICE";
+        DynamicUser = true;
+        ExecStart = "${pkgs.dnscrypt-proxy2}/bin/dnscrypt-proxy -config ${cfg.configFile}";
+      };
+    };
+  };
+}