Deploy Transmission + VPN services

Signed-off-by: Mel <einebeere@gmail.com>

5 files changed, 127 insertions, 4 deletions

diff --git a/machines/corsac/default.nix b/machines/corsac/default.nix
index b01b241..a80993f 100644
--- a/machines/corsac/default.nix
+++ b/machines/corsac/default.nix
@@ -14,6 +14,7 @@
     ../../modules/jellyfin.nix
 
     ../../services/immich.nix
+    ../../services/transmission.nix
   ];
 
   system.stateVersion = "24.05";
diff --git a/modules/foundation/services.nix b/modules/foundation/services.nix
index 5acb0c6..bedceb1 100644
--- a/modules/foundation/services.nix
+++ b/modules/foundation/services.nix
@@ -38,6 +38,16 @@ let
         default = [ ];
       };
 
+      devices = mkOption {
+        type = with types; listOf str;
+        default = [ ];
+      };
+
+      capabilities = mkOption {
+        type = with types; listOf str;
+        default = [ ];
+      };
+
       entrypoint = mkOption {
         type = types.nullOr types.str;
         default = null;
@@ -62,6 +72,11 @@ let
         type = types.listOf types.path;
         default = [ ];
       };
+
+      customNetwork = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+      };
     };
   };
 
@@ -178,11 +193,15 @@ in
             image,
             ports,
             volumes,
+            devices,
+            capabilities,
             entrypoint ? null,
             cmd ? null,
             workdir ? null,
             environment ? null,
             environmentFiles ? null,
+            customNetwork ? null,
+
             group,
             ...
           }:
@@ -196,10 +215,24 @@ in
               ;
             ports = map mkOciPort ports;
             volumes = map mkOciVolume volumes;
-            extraOptions = lib.mkIf (group != "") [
-              "--network-alias=${name}"
-              "--network=${group}"
-            ];
+
+            extraOptions = let
+              mapOptions = optionName: values:
+                map (v: "--${optionName}=${v}") values;
+
+              networkOptions =
+                if customNetwork != null then [
+                  "--network=${customNetwork}"
+                ] else if group != "" then [
+                  "--network-alias=${name}"
+                  "--network=${group}"
+                ] else [];
+
+              capabilityOptions = mapOptions "cap-add" capabilities;
+
+              deviceOptions = mapOptions "device" devices;
+            in
+            networkOptions ++ capabilityOptions ++ deviceOptions;
           }
           // (mkImage {
             oldImage = fullImage;
diff --git a/secrets/pia-login-secrets.age b/secrets/pia-login-secrets.age
new file mode 100644
index 0000000..5f66af1
--- /dev/null
+++ b/secrets/pia-login-secrets.age
diff --git a/secrets/secrets.nix b/secrets/secrets.nix
index 604ca1e..823420b 100644
--- a/secrets/secrets.nix
+++ b/secrets/secrets.nix
@@ -18,5 +18,9 @@ in
     lapin
   ] ++ allAdmins;
 
+  "pia-login-secrets.age".publicKeys = [
+    corsac
+  ] ++ allAdmins;
+
   "password.age".publicKeys = allSystems ++ allAdmins;
 }
diff --git a/services/transmission.nix b/services/transmission.nix
new file mode 100644
index 0000000..ec98177
--- /dev/null
+++ b/services/transmission.nix
@@ -0,0 +1,85 @@
+{
+  me,
+  config,
+  lib,
+  pkgs,
+  auxiliaryPkgs,
+  ...
+}:
+
+let
+  inherit (pkgs) dockerTools;
+  inherit (auxiliaryPkgs) common;
+
+  transmission = pkgs.transmission_4;
+
+  transmissionLocalPort = 2018;
+  transmissionDir = "/srv/transmission";
+
+  transmissionImage = dockerTools.streamLayeredImage {
+    name = "transmission";
+    tag = transmission.version;
+    fromImage = common.alpine.base;
+    contents = [ transmission ];
+  };
+
+  gluetunImage = common.pullImage {
+    name = "qmcgaw/gluetun";
+    tag = "v3.39";
+    digest = "sha256:6a8058e626763cbf735ac2f78c774dbb24fec2490bd9d9f7d67e22592cb4a991";
+    x86.sha256 = "1cg43lmp3ql64zsfwp2f52kigijs30n3hnja12msr9npbgq8a8ga";
+  };
+
+  piaCountries = [
+    "Albania" "Austria" "Belgium" "Bosnia and Herzegovina" "Bulgaria"
+    "Czech Republic" "ES Madrid" "ES Valencia" "Estonia" "Georgia" "Greece"
+    "Hungary" "IT Milano" "Poland" "Portugal" "Romania" "Serbia" "Turkey" "Ukraine"
+  ];
+in
+{
+  age.secrets.pia-login-secrets = {
+    file = ../secrets/pia-login-secrets.age;
+  };
+
+  foundation.services = {
+    transmission = {
+      image = transmissionImage;
+
+      volumes = [
+        [ "${transmissionDir}/config" "/var/lib/transmission/config" ]
+        [ "${transmissionDir}/download" "/var/lib/transmission/download" ]
+        [ "${transmissionDir}/torrents" "/var/lib/transmission/torrents" ]
+      ];
+
+      entrypoint = lib.getExe' transmission "transmission-daemon";
+      cmd = [
+        "--foreground"
+        "--config-dir" "/var/lib/transmission/config"
+      ];
+
+      customNetwork = "container:vpn";
+    };
+
+    vpn = {
+      fullImage = gluetunImage;
+
+      ports = [
+        (common.tailnetPort me [ transmissionLocalPort 9091 ])
+      ];
+
+      volumes = [
+        [ "${transmissionDir}/gluetun" "/gluetun" ]
+      ];
+
+      capabilities = [ "NET_ADMIN" ];
+      devices = [ "/dev/net/tun" ];
+
+      environment = {
+        VPN_SERVICE_PROVIDER = "private internet access";
+        SERVER_REGIONS = lib.concatStringsSep "," piaCountries;
+      };
+
+      environmentFiles = [ config.age.secrets.pia-login-secrets.path ];
+    };
+  };
+}