{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.adguardhome;
args = concatStringsSep " " ([
"--no-check-update"
"--pidfile /run/AdGuardHome/AdGuardHome.pid"
"--work-dir /var/lib/AdGuardHome/"
"--config /var/lib/AdGuardHome/AdGuardHome.yaml"
] ++ cfg.extraArgs);
baseConfig = {
bind_host = cfg.host;
bind_port = cfg.port;
};
configFile = pkgs.writeTextFile {
name = "AdGuardHome.yaml";
text = builtins.toJSON (recursiveUpdate cfg.settings baseConfig);
checkPhase = "${pkgs.adguardhome}/bin/adguardhome -c $out --check-config";
};
in {
options.services.adguardhome = with types; {
enable = mkEnableOption "AdGuard Home network-wide ad blocker";
host = mkOption {
default = "0.0.0.0";
type = str;
description = ''
Host address to bind HTTP server to.
'';
};
port = mkOption {
default = 3000;
type = port;
description = ''
Port to serve HTTP pages on.
'';
};
openFirewall = mkOption {
default = false;
type = bool;
description = ''
Open ports in the firewall for the AdGuard Home web interface. Does not
open the port needed to access the DNS resolver.
'';
};
mutableSettings = mkOption {
default = true;
type = bool;
description = ''
Allow changes made on the AdGuard Home web interface to persist between
service restarts.
'';
};
settings = mkOption {
type = (pkgs.formats.yaml { }).type;
default = { };
description = ''
AdGuard Home configuration. Refer to
for details on supported values.
On start and if is true,
these options are merged into the configuration file on start, taking
precedence over configuration changes made on the web interface.
'';
};
extraArgs = mkOption {
default = [ ];
type = listOf str;
description = ''
Extra command line parameters to be passed to the adguardhome binary.
'';
};
};
config = mkIf cfg.enable {
systemd.services.adguardhome = {
description = "AdGuard Home: Network-level blocker";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
unitConfig = {
StartLimitIntervalSec = 5;
StartLimitBurst = 10;
};
preStart = ''
if [ -e "$STATE_DIRECTORY/AdGuardHome.yaml" ] \
&& [ "${toString cfg.mutableSettings}" = "1" ]; then
# Writing directly to AdGuardHome.yaml results in empty file
${pkgs.yaml-merge}/bin/yaml-merge "$STATE_DIRECTORY/AdGuardHome.yaml" "${configFile}" > "$STATE_DIRECTORY/AdGuardHome.yaml.tmp"
mv "$STATE_DIRECTORY/AdGuardHome.yaml.tmp" "$STATE_DIRECTORY/AdGuardHome.yaml"
else
cp --force "${configFile}" "$STATE_DIRECTORY/AdGuardHome.yaml"
chmod 600 "$STATE_DIRECTORY/AdGuardHome.yaml"
fi
'';
serviceConfig = {
DynamicUser = true;
ExecStart = "${pkgs.adguardhome}/bin/adguardhome ${args}";
AmbientCapabilities = [ "CAP_NET_BIND_SERVICE" ];
Restart = "always";
RestartSec = 10;
RuntimeDirectory = "AdGuardHome";
StateDirectory = "AdGuardHome";
};
};
networking.firewall.allowedTCPPorts = mkIf cfg.openFirewall [ cfg.port ];
};
}