commit 26e14e57af344f61d8adc37ce4f6f1fe554861bc · pyrox.dev/nixpkgs

+61 -26
nixos/modules/services/networking/networkd-dispatcher.nix
···

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       with lib;

     

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       let

     

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         cfg = config.services.networkd-dispatcher;

     

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       in {

     

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         options = {

     

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           services.networkd-dispatcher = {

     

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···

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               for usage.

     

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             '');

     

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             scriptDir = mkOption {

     

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               type = types.path;

     

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               default = "/var/lib/networkd-dispatcher";

     

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               description = mdDoc ''

     

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                 This directory is used for keeping various scripts read and run by

     

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                 networkd-dispatcher. See [https://gitlab.com/craftyguy/networkd-dispatcher](upstream instructions)

     

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                 for directory structure and script usage.

     

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             rules = mkOption {

     

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               default = {};

     

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               example = lib.literalExpression ''

     

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                 { "restart-tor" = {

     

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                     onState = ["routable" "off"];

     

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                     script = '''

     

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                       #!''${pkgs.runtimeShell}

     

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                       if [[ $IFACE == "wlan0" && $AdministrativeState == "configured" ]]; then

     

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                         echo "Restarting Tor ..."

     

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                         systemctl restart tor

     

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                       fi

     

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                       exit 0

     

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                     ''';

     

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                   };

     

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                 };

     

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               '';

     

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               description = lib.mdDoc ''

     

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                 Declarative configuration of networkd-dispatcher rules. See

     

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                 [https://gitlab.com/craftyguy/networkd-dispatcher](upstream instructions)

     

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                 for an introduction and example scripts.

     

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               '';

     

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               type = types.attrsOf (types.submodule {

     

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                 options = {

     

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                   onState = mkOption {

     

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                     type = types.listOf (types.enum [

     

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                       "routable" "dormant" "no-carrier" "off" "carrier" "degraded"

     

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                       "configuring" "configured"

     

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                     ]);

     

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                     default = null;

     

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                     description = lib.mdDoc ''

     

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                       List of names of the systemd-networkd operational states which

     

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                       should trigger the script. See <https://www.freedesktop.org/software/systemd/man/networkctl.html>

     

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                       for a description of the specific state type.

     

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                     '';

     

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                   };

     

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                   script = mkOption {

     

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                     type = types.lines;

     

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                     description = lib.mdDoc ''

     

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                       Shell commands executed on specified operational states.

     

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                     '';

     

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                   };

     

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                 };

     

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               });

     

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             };

     

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           };

     
···

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         config = mkIf cfg.enable {

     

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           systemd = {

     

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             packages = [ pkgs.networkd-dispatcher ];

     

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             services.networkd-dispatcher = {

     

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               wantedBy = [ "multi-user.target" ];

     

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               # Override existing ExecStart definition

     

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               serviceConfig.ExecStart = [

     

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               serviceConfig.ExecStart = let

     

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                 scriptDir = pkgs.symlinkJoin {

     

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                   name = "networkd-dispatcher-script-dir";

     

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                   paths = lib.mapAttrsToList (name: cfg:

     

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                     (map(state:

     

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                       pkgs.writeTextFile {

     

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                         inherit name;

     

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                         text = cfg.script;

     

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                         destination = "/${state}.d/${name}";

     

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                         executable = true;

     

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                       }

     

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                     ) cfg.onState)

     

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                   ) cfg.rules;

     

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                 };

     

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               in [

     

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                 ""

     

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                 "${pkgs.networkd-dispatcher}/bin/networkd-dispatcher -v --script-dir ${cfg.scriptDir} $networkd_dispatcher_args"

     

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                 "${pkgs.networkd-dispatcher}/bin/networkd-dispatcher -v --script-dir ${scriptDir} $networkd_dispatcher_args"

     

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               ];

     

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             };

     

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             # Directory structure required according to upstream instructions

     

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             # https://gitlab.com/craftyguy/networkd-dispatcher

     

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             tmpfiles.rules = [

     

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               "d '${cfg.scriptDir}'               0750 root root - -"

     

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               "d '${cfg.scriptDir}/routable.d'    0750 root root - -"

     

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               "d '${cfg.scriptDir}/dormant.d'     0750 root root - -"

     

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               "d '${cfg.scriptDir}/no-carrier.d'  0750 root root - -"

     

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               "d '${cfg.scriptDir}/off.d'         0750 root root - -"

     

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               "d '${cfg.scriptDir}/carrier.d'     0750 root root - -"

     

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               "d '${cfg.scriptDir}/degraded.d'    0750 root root - -"

     

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               "d '${cfg.scriptDir}/configuring.d' 0750 root root - -"

     

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               "d '${cfg.scriptDir}/configured.d'  0750 root root - -"

     

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             ];

     

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           };

     

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       -
       

     

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         };

     

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       }