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|
{
config,
lib,
pkgs,
...
}:
let
cfg = config.services.blocky;
format = pkgs.formats.yaml { };
configFile = format.generate "config.yaml" cfg.settings;
in
{
options.services.blocky = {
enable = lib.mkEnableOption "blocky, a fast and lightweight DNS proxy as ad-blocker for local network with many features";
package = lib.mkPackageOption pkgs "blocky" { };
enableConfigCheck = lib.mkEnableOption "checking the config during build time" // {
default = true;
};
settings = lib.mkOption {
type = format.type;
default = { };
description = ''
Blocky configuration. Refer to
<https://0xerr0r.github.io/blocky/configuration/>
for details on supported values.
'';
};
};
config = lib.mkIf cfg.enable {
systemd.services.blocky = {
description = "A DNS proxy and ad-blocker for the local network";
wants = [
"network-online.target"
"nss-lookup.target"
];
before = [
"nss-lookup.target"
];
wantedBy = [
"multi-user.target"
];
serviceConfig = {
AmbientCapabilities = [ "CAP_NET_BIND_SERVICE" ];
CapabilityBoundingSet = [ "CAP_NET_BIND_SERVICE" ];
DynamicUser = true;
ExecStart = "${lib.getExe cfg.package} --config ${configFile}";
LockPersonality = true;
LogsDirectory = "blocky";
MemoryDenyWriteExecute = true;
NoNewPrivileges = true;
NonBlocking = true;
PrivateDevices = true;
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
ProtectSystem = "strict";
Restart = "on-failure";
RestrictAddressFamilies =
let
logType = lib.attrByPath [ "settings" "queryLog" "type" ] "" cfg;
in
(lib.optional (lib.elem logType [
"mysql"
"postgresql"
"timescale"
]) "AF_UNIX")
++ [
"AF_INET"
"AF_INET6"
];
RestrictNamespaces = true;
RestrictRealtime = true;
RuntimeDirectory = "blocky";
StateDirectory = "blocky";
SystemCallArchitectures = "native";
SystemCallFilter = [
"@system-service"
"@chown"
"~@aio"
"~@keyring"
"~@memlock"
"~@setuid"
"~@timer"
];
};
};
system.checks = lib.mkIf cfg.enableConfigCheck [
(pkgs.runCommand "check-blocky-config" { } ''
${lib.getExe cfg.package} --config ${configFile} validate && touch $out
'')
];
};
meta.maintainers = with lib.maintainers; [
paepcke
kuflierl
];
}
|
