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|
{ 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);
configFile = pkgs.writeTextFile {
name = "AdGuardHome.yaml";
text = builtins.toJSON cfg.settings;
checkPhase = "${pkgs.adguardhome}/bin/adguardhome -c $out --check-config";
};
in
{
imports =
let cfgPath = [ "services" "adguardhome" ];
in
[
(mkRenamedOptionModuleWith { sinceRelease = 2211; from = cfgPath ++ [ "host" ]; to = cfgPath ++ [ "settings" "bind_host" ]; })
(mkRenamedOptionModuleWith { sinceRelease = 2211; from = cfgPath ++ [ "port" ]; to = cfgPath ++ [ "settings" "bind_port" ]; })
];
options.services.adguardhome = with types; {
enable = mkEnableOption (lib.mdDoc "AdGuard Home network-wide ad blocker");
openFirewall = mkOption {
default = false;
type = bool;
description = lib.mdDoc ''
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 = lib.mdDoc ''
Allow changes made on the AdGuard Home web interface to persist between
service restarts.
'';
};
settings = mkOption {
default = null;
type = nullOr (submodule {
freeformType = (pkgs.formats.yaml { }).type;
options = {
schema_version = mkOption {
default = pkgs.adguardhome.schema_version;
defaultText = literalExpression "pkgs.adguardhome.schema_version";
type = int;
description = lib.mdDoc ''
Schema version for the configuration.
Defaults to the `schema_version` supplied by `pkgs.adguardhome`.
'';
};
bind_host = mkOption {
default = "0.0.0.0";
type = str;
description = lib.mdDoc ''
Host address to bind HTTP server to.
'';
};
bind_port = mkOption {
default = 3000;
type = port;
description = lib.mdDoc ''
Port to serve HTTP pages on.
'';
};
};
});
description = lib.mdDoc ''
AdGuard Home configuration. Refer to
<https://github.com/AdguardTeam/AdGuardHome/wiki/Configuration#configuration-file>
for details on supported values.
::: {.note}
On start and if {option}`mutableSettings` is `true`,
these options are merged into the configuration file on start, taking
precedence over configuration changes made on the web interface.
Set this to `null` (default) for a non-declarative configuration without any
Nix-supplied values.
Declarative configurations are supplied with a default `schema_version`, `bind_host`, and `bind_port`.
:::
'';
};
extraArgs = mkOption {
default = [ ];
type = listOf str;
description = lib.mdDoc ''
Extra command line parameters to be passed to the adguardhome binary.
'';
};
};
config = mkIf cfg.enable {
assertions = [
{
assertion = cfg.settings != null -> cfg.mutableSettings
|| (hasAttrByPath [ "dns" "bind_host" ] cfg.settings)
|| (hasAttrByPath [ "dns" "bind_hosts" ] cfg.settings);
message =
"AdGuard setting dns.bind_host or dns.bind_hosts needs to be configured for a minimal working configuration";
}
{
assertion = cfg.settings != null -> cfg.mutableSettings
|| hasAttrByPath [ "dns" "bootstrap_dns" ] cfg.settings;
message =
"AdGuard setting dns.bootstrap_dns needs to be configured for a minimal working configuration";
}
];
systemd.services.adguardhome = {
description = "AdGuard Home: Network-level blocker";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
unitConfig = {
StartLimitIntervalSec = 5;
StartLimitBurst = 10;
};
preStart = optionalString (cfg.settings != null) ''
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.settings.bind_port ];
};
}
|