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|
{
config,
lib,
pkgs,
...
}:
with lib;
let
cfg = config.services.networkd-dispatcher;
in
{
options = {
services.networkd-dispatcher = {
enable = mkEnableOption ''
Networkd-dispatcher service for systemd-networkd connection status
change. See [upstream instructions](https://gitlab.com/craftyguy/networkd-dispatcher)
for usage
'';
rules = mkOption {
default = { };
example = lib.literalExpression ''
{ "restart-tor" = {
onState = ["routable" "off"];
script = '''
#!''${pkgs.runtimeShell}
if [[ $IFACE == "wlan0" && $AdministrativeState == "configured" ]]; then
echo "Restarting Tor ..."
systemctl restart tor
fi
exit 0
''';
};
};
'';
description = ''
Declarative configuration of networkd-dispatcher rules. See
[upstream instructions](https://gitlab.com/craftyguy/networkd-dispatcher)
for an introduction and example scripts.
'';
type = types.attrsOf (
types.submodule {
options = {
onState = mkOption {
type = types.listOf (
types.enum [
"routable"
"dormant"
"no-carrier"
"off"
"carrier"
"degraded"
"configuring"
"configured"
"enslaved"
]
);
default = null;
description = ''
List of names of the systemd-networkd operational states which
should trigger the script. See {manpage}`networkctl(1)`
for a description of the specific state type.
'';
};
script = mkOption {
type = types.lines;
description = ''
Shell commands executed on specified operational states.
'';
};
};
}
);
};
extraArgs = mkOption {
type = types.listOf types.str;
default = [ ];
description = ''
Extra arguments to pass to the networkd-dispatcher command.
'';
apply = escapeShellArgs;
};
};
};
config = mkIf cfg.enable {
warnings = mkIf (!config.systemd.network.enable) [
"services.networkd-dispatcher will not execute any scripts unless networkd is enabled, either via `systemd.network.enable` or via `networking.useNetworkd`."
];
systemd = {
packages = [ pkgs.networkd-dispatcher ];
services.networkd-dispatcher = {
wantedBy = [ "multi-user.target" ];
environment.networkd_dispatcher_args = cfg.extraArgs;
};
};
services.networkd-dispatcher.extraArgs =
let
scriptDir = pkgs.runCommand "networkd-dispatcher-script-dir" { } (
''
mkdir $out
''
+ (lib.concatStrings (
lib.mapAttrsToList (
name: cfg:
(lib.concatStrings (
map (state: ''
mkdir -p $out/${state}.d
ln -s ${
lib.getExe (
pkgs.writeShellApplication {
inherit name;
text = cfg.script;
}
)
} $out/${state}.d/${name}
'') cfg.onState
))
) cfg.rules
))
);
in
[
"--verbose"
"--script-dir"
"${scriptDir}"
];
};
}
|
