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|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.eth.services.catbus-observer-networkpresence;
configJSON = pkgs.writeText "config.json" ''
{
"mqttBroker": "tcp://${cfg.mqttBroker.host}:${toString cfg.mqttBroker.port}",
"devices": {
"TV": {
"mac": "${cfg.devices.tv.mac}",
"topic": "${cfg.devices.tv.topic}"
}
}
}
'';
in {
options.eth.services.catbus-observer-networkpresence = {
enable = mkEnableOption "Whether to enable the Catbus network-presence observer";
interface = mkOption {
type = types.str;
description = "interface to scan";
default = "";
example = "enp2s0";
};
mqttBroker = {
host = mkOption {
type = types.str;
description = "Host of the MQTT broker.";
example = "localhost";
};
port = mkOption {
type = types.int;
description = "Port of the MQTT broker.";
default = 1883;
};
};
# TODO: replace this with a proper set of option sets.
devices = {
tv = {
mac = mkOption {
type = types.str;
description = "The device's MAC address";
example = "aa:bb:cc:dd:ee:ff";
};
topic = mkOption {
type = types.str;
description = "MQTT topic for controlling the device";
example = "home/house/speakers/power";
};
};
};
};
config = mkIf cfg.enable {
assertions = [
{
assertion = cfg.interface != "";
message = "must set config.eth.services.catbus-observer-networkpresence.interface";
}
];
systemd.services.catbus-observer-networkpresence = {
enable = true;
description = "Detect devices on the network to publish to Catbus";
wants = [ "network.target" ];
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
DynamicUser = true;
AmbientCapabilities = "CAP_NET_RAW CAP_NET_ADMIN";
ExecStart = "${pkgs.eth.catbus-networkpresence}/bin/catbus-observer-networkpresence --config-path ${configJSON} --interface ${cfg.interface}";
NoNewPrivileges = true;
ProtectKernelTunables = true;
ProtectControlGroups = true;
ProtectKernelModules = true;
RestrictNamespaces = true;
};
};
};
}
|
