1 files changed, 80 insertions, 0 deletions
diff --git a/nixos/modules/services/security/torify.nix b/nixos/modules/services/security/torify.nix
new file mode 100644
index 00000000000..39551190dd3
--- /dev/null
+++ b/nixos/modules/services/security/torify.nix
@@ -0,0 +1,80 @@
+{ config, lib, pkgs, ... }:
+with lib;
+let
+
+  cfg = config.services.tor;
+
+  torify = pkgs.writeTextFile {
+    name = "tsocks";
+    text = ''
+        #!${pkgs.runtimeShell}
+        TSOCKS_CONF_FILE=${pkgs.writeText "tsocks.conf" cfg.tsocks.config} LD_PRELOAD="${pkgs.tsocks}/lib/libtsocks.so $LD_PRELOAD" "$@"
+    '';
+    executable = true;
+    destination = "/bin/tsocks";
+  };
+
+in
+
+{
+
+  ###### interface
+
+  options = {
+
+    services.tor.tsocks = {
+
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Whether to build tsocks wrapper script to relay application traffic via Tor.
+
+          <important>
+            <para>You shouldn't use this unless you know what you're
+            doing because your installation of Tor already comes with
+            its own superior (doesn't leak DNS queries)
+            <literal>torsocks</literal> wrapper which does pretty much
+            exactly the same thing as this.</para>
+          </important>
+        '';
+      };
+
+      server = mkOption {
+        type = types.str;
+        default = "localhost:9050";
+        example = "192.168.0.20";
+        description = ''
+          IP address of TOR client to use.
+        '';
+      };
+
+      config = mkOption {
+        type = types.lines;
+        default = "";
+        description = ''
+          Extra configuration. Contents will be added verbatim to TSocks
+          configuration file.
+        '';
+      };
+
+    };
+
+  };
+
+  ###### implementation
+
+  config = mkIf cfg.tsocks.enable {
+
+    environment.systemPackages = [ torify ];  # expose it to the users
+
+    services.tor.tsocks.config = ''
+      server = ${toString(head (splitString ":" cfg.tsocks.server))}
+      server_port = ${toString(tail (splitString ":" cfg.tsocks.server))}
+
+      local = 127.0.0.0/255.128.0.0
+      local = 127.128.0.0/255.192.0.0
+    '';
+  };
+
+}