nixos: kodi module

Includes basic support for specifying sources and advanced configuration.
NixOS · Feb 19, 2020 · 9ac5106 · 9ac5106
1 parent 8731aaa
commit 9ac5106
Showing 1 changed file with 224 additions and 10 deletions.
diff --git a/nixos/modules/services/x11/desktop-managers/kodi.nix b/nixos/modules/services/x11/desktop-managers/kodi.nix
@@ -4,27 +4,241 @@ with lib;
 
 let
   cfg = config.services.xserver.desktopManager.kodi;
-in
 
+  bin = "${getBin pkgs.kodi}/bin/kodi --lircdev /run/lirc/lircd --standalone";
+
+  boolToStr = bool: if bool then "true" else "false";
+
+  manageSources = (cfg.sourcesConfig != "");
+
+  advCfg = pkgs.writeText "advancedsettings.xml" ''
+    <?xml version='1.0' encoding='utf-8'?>
+    <advancedsettings>
+      ${optionalString (cfg.database.type == "mysql") ''
+    <videodatabase>
+      <type>mysql</type>
+      <host>${cfg.database.host}</host>
+      <port>${toString cfg.database.port}</port>
+      <user>${cfg.database.user}</user>
+      <pass>${cfg.database.password}</pass>
+    </videodatabase>
+    <musicdatabase>
+      <type>mysql</type>
+      <host>${cfg.database.host}</host>
+      <port>${toString cfg.database.port}</port>
+      <user>${cfg.database.user}</user>
+      <pass>${cfg.database.password}</pass>
+    </musicdatabase>''}
+      ${cfg.advancedConfig}
+    </advancedsettings>
+  '';
+
+  srcCfg = pkgs.writeText "sources.xml" ''
+    <?xml version='1.0' encoding='utf-8'?>
+    <sources>
+      ${cfg.sourcesConfig}
+    </sources>
+  '';
+
+  cfgDir = pkgs.stdenv.mkDerivation {
+    name = "kodi-config";
+    buildCommand = ''
+      dir=$out/etc/kodi
+      mkdir -p $dir
+
+      ln -s ${advCfg} $dir/advancedsettings.xml
+      ln -s ${srcCfg} $dir/sources.xml
+    '';
+  };
+
+  setupScript = pkgs.writeScript "link_kodi_config.sh" ''
+    #!${pkgs.runtimeShell}
+    set -eEuo pipefail
+
+    processUserFile() {
+      local userdata=${cfg.homeDir}/.kodi/userdata
+      local file=$1
+      local symlink=''${2:-1}
+
+      test -f $userdata/$1 && mv $userdata/$1 $userdata/$1.$(date +%s)
+      mkdir -p $userdata
+      ln -sf ${cfgDir}/etc/kodi/$1 $userdata/$1
+    }
+
+    processUserFile advancedsettings.xml
+
+    if [ "x${boolToStr manageSources}" == "xtrue" ] ; then
+      processUserFile sources.xml
+    fi
+
+    exit 0
+  '';
+
+  # sddm is broken for auto-login using id < 1000
+  # https://github.com/sddm/sddm/issues/762
+  # uid = config.ids.uids.kodi;
+  uid = 3000;
+
+in
 {
   options = {
     services.xserver.desktopManager.kodi = {
       enable = mkOption {
         default = false;
+        type = types.bool;
+        example = true;
         description = "Enable the kodi multimedia center.";
       };
+
+      runMode = mkOption {
+        default = "session";
+        type = types.enum [ "session" "auto-login" "standalone" ];
+        description = ''
+          How to launch kodi.
+        '';
+      };
+
+      tty = mkOption {
+        default = "tty7";
+        type = types.str;
+        description = "Which TTY to launch kodi on.";
+      };
+
+      homeDir = mkOption {
+        default = "/var/lib/kodi";
+        type = types.str;
+        description = "Home directory.";
+      };
+
+      zeroconf = mkOption {
+        default = false;
+        type = types.bool;
+        description = "Enable support for Zeroconf/Avahi";
+      };
+
+      database = mkOption {
+        default = {};
+        description = "Configure the database.";
+        type = (
+          types.submodule {
+            options = {
+              type = mkOption {
+                default = "sqlite";
+                type = types.enum [ "sqlite" "mysql" ];
+                description = "Which type of database to connect to.";
+              };
+
+              host = mkOption {
+                default = "localhost";
+                type = types.str;
+                description = "Database host.";
+              };
+
+              port = mkOption {
+                default = 3306;
+                type = types.int;
+                description = "Database port.";
+              };
+
+              user = mkOption {
+                default = "kodi";
+                type = types.str;
+                description = "Database user.";
+              };
+
+              password = mkOption {
+                default = "kodi";
+                type = types.str;
+                description = "Database password.";
+              };
+            };
+          }
+        );
+      };
+
+      sourcesConfig = mkOption {
+        type = types.lines;
+        default = "";
+        description = ''sources.xml configuration'';
+      };
+
+      advancedConfig = mkOption {
+        type = types.lines;
+        default = "";
+        description = ''Extra advancedsettings.xml configuration'';
+      };
     };
   };
 
   config = mkIf cfg.enable {
-    services.xserver.desktopManager.session = [{
-      name = "kodi";
-      start = ''
-        ${pkgs.kodi}/bin/kodi --lircdev /run/lirc/lircd --standalone &
-        waitPID=$!
-      '';
-    }];
-
-    environment.systemPackages = [ pkgs.kodi ];
+    environment.etc.kodi.source = cfgDir;
+
+    services = {
+      avahi.enable = cfg.zeroconf;
+
+      xserver = {
+        desktopManager.session = [
+          {
+            name = "kodi";
+            start = ''
+              ${setupScript}
+              ${bin} &
+              waitPID=$!
+            '';
+          }
+        ];
+
+        displayManager.sddm = {
+          enable = (cfg.runMode == "auto-login");
+          autoLogin = {
+            enable = true;
+            user = "kodi";
+            relogin = true;
+          };
+        };
+      };
+    };
+
+    systemd.services = {
+      kodi = mkIf (cfg.runMode == "standalone") {
+        description = "Kodi Media Server on ${cfg.tty}";
+        conflicts = [ "getty@${cfg.tty}.service" ];
+        after = [ "mysqld.service" ];
+        wantedBy = [ "graphical.target" ];
+        path = [ "${getBin pkgs.xorg.xorgserver}" ];
+        serviceConfig = {
+          User = "kodi";
+          Group = "kodi";
+          PAMName = "login";
+          ExecStartPre = setupScript;
+          ExecStart = lib.concatStringsSep " " [
+            "${pkgs.xorg.xinit}/bin/xinit ${bin} -- :"
+            (toString (if builtins.isInt config.services.xserver.display then config.services.xserver.display else 0))
+            "-nolisten tcp"
+            (builtins.replaceStrings [ "tty" ] [ "vt" ] cfg.tty)
+          ];
+          Restart = "on-failure";
+          ProtectSystem = "full";
+          # doesn't work with true as it is expecting a socket in /tmp
+          PrivateTmp = false;
+        };
+      };
+    };
+
+    users = {
+      extraGroups.kodi.gid = uid;
+
+      extraUsers.kodi = {
+        uid = uid;
+        group = "kodi";
+        home = cfg.homeDir;
+        description = "Kodi User";
+        createHome = true;
+        shell = "${pkgs.stdenv.shell}";
+        isNormalUser = false;
+        # tty seems needed for "standalone" although not quite working yet
+        extraGroups = [ "tty" ];
+      };
+    };
   };
 }