mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-02 02:24:27 +00:00
314 lines
10 KiB
Nix
314 lines
10 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
let
|
|
cfg = config.services.unbound;
|
|
|
|
yesOrNo = v: if v then "yes" else "no";
|
|
|
|
toOption = indent: n: v: "${indent}${toString n}: ${v}";
|
|
|
|
toConf = indent: n: v:
|
|
if builtins.isFloat v then (toOption indent n (builtins.toJSON v))
|
|
else if isInt v then (toOption indent n (toString v))
|
|
else if isBool v then (toOption indent n (yesOrNo v))
|
|
else if isString v then (toOption indent n v)
|
|
else if isList v then (concatMapStringsSep "\n" (toConf indent n) v)
|
|
else if isAttrs v then (concatStringsSep "\n" (
|
|
["${indent}${n}:"] ++ (
|
|
mapAttrsToList (toConf "${indent} ") v
|
|
)
|
|
))
|
|
else throw (traceSeq v "services.unbound.settings: unexpected type");
|
|
|
|
confNoServer = concatStringsSep "\n" ((mapAttrsToList (toConf "") (builtins.removeAttrs cfg.settings [ "server" ])) ++ [""]);
|
|
confServer = concatStringsSep "\n" (mapAttrsToList (toConf " ") (builtins.removeAttrs cfg.settings.server [ "define-tag" ]));
|
|
|
|
confFile = pkgs.writeText "unbound.conf" ''
|
|
server:
|
|
${optionalString (cfg.settings.server.define-tag != "") (toOption " " "define-tag" cfg.settings.server.define-tag)}
|
|
${confServer}
|
|
${confNoServer}
|
|
'';
|
|
|
|
rootTrustAnchorFile = "${cfg.stateDir}/root.key";
|
|
|
|
in {
|
|
|
|
###### interface
|
|
|
|
options = {
|
|
services.unbound = {
|
|
|
|
enable = mkEnableOption "Unbound domain name server";
|
|
|
|
package = mkOption {
|
|
type = types.package;
|
|
default = pkgs.unbound-with-systemd;
|
|
defaultText = literalExpression "pkgs.unbound-with-systemd";
|
|
description = "The unbound package to use";
|
|
};
|
|
|
|
user = mkOption {
|
|
type = types.str;
|
|
default = "unbound";
|
|
description = "User account under which unbound runs.";
|
|
};
|
|
|
|
group = mkOption {
|
|
type = types.str;
|
|
default = "unbound";
|
|
description = "Group under which unbound runs.";
|
|
};
|
|
|
|
stateDir = mkOption {
|
|
default = "/var/lib/unbound";
|
|
description = "Directory holding all state for unbound to run.";
|
|
};
|
|
|
|
resolveLocalQueries = mkOption {
|
|
type = types.bool;
|
|
default = true;
|
|
description = ''
|
|
Whether unbound should resolve local queries (i.e. add 127.0.0.1 to
|
|
/etc/resolv.conf).
|
|
'';
|
|
};
|
|
|
|
enableRootTrustAnchor = mkOption {
|
|
default = true;
|
|
type = types.bool;
|
|
description = "Use and update root trust anchor for DNSSEC validation.";
|
|
};
|
|
|
|
localControlSocketPath = mkOption {
|
|
default = null;
|
|
# FIXME: What is the proper type here so users can specify strings,
|
|
# paths and null?
|
|
# My guess would be `types.nullOr (types.either types.str types.path)`
|
|
# but I haven't verified yet.
|
|
type = types.nullOr types.str;
|
|
example = "/run/unbound/unbound.ctl";
|
|
description = ''
|
|
When not set to <literal>null</literal> this option defines the path
|
|
at which the unbound remote control socket should be created at. The
|
|
socket will be owned by the unbound user (<literal>unbound</literal>)
|
|
and group will be <literal>nogroup</literal>.
|
|
|
|
Users that should be permitted to access the socket must be in the
|
|
<literal>config.services.unbound.group</literal> group.
|
|
|
|
If this option is <literal>null</literal> remote control will not be
|
|
enabled. Unbounds default values apply.
|
|
'';
|
|
};
|
|
|
|
settings = mkOption {
|
|
default = {};
|
|
type = with types; submodule {
|
|
|
|
freeformType = let
|
|
validSettingsPrimitiveTypes = oneOf [ int str bool float ];
|
|
validSettingsTypes = oneOf [ validSettingsPrimitiveTypes (listOf validSettingsPrimitiveTypes) ];
|
|
settingsType = oneOf [ str (attrsOf validSettingsTypes) ];
|
|
in attrsOf (oneOf [ settingsType (listOf settingsType) ])
|
|
// { description = ''
|
|
unbound.conf configuration type. The format consist of an attribute
|
|
set of settings. Each settings can be either one value, a list of
|
|
values or an attribute set. The allowed values are integers,
|
|
strings, booleans or floats.
|
|
'';
|
|
};
|
|
|
|
options = {
|
|
remote-control.control-enable = mkOption {
|
|
type = bool;
|
|
default = false;
|
|
internal = true;
|
|
};
|
|
};
|
|
};
|
|
example = literalExpression ''
|
|
{
|
|
server = {
|
|
interface = [ "127.0.0.1" ];
|
|
};
|
|
forward-zone = [
|
|
{
|
|
name = ".";
|
|
forward-addr = "1.1.1.1@853#cloudflare-dns.com";
|
|
}
|
|
{
|
|
name = "example.org.";
|
|
forward-addr = [
|
|
"1.1.1.1@853#cloudflare-dns.com"
|
|
"1.0.0.1@853#cloudflare-dns.com"
|
|
];
|
|
}
|
|
];
|
|
remote-control.control-enable = true;
|
|
};
|
|
'';
|
|
description = ''
|
|
Declarative Unbound configuration
|
|
See the <citerefentry><refentrytitle>unbound.conf</refentrytitle>
|
|
<manvolnum>5</manvolnum></citerefentry> manpage for a list of
|
|
available options.
|
|
'';
|
|
};
|
|
};
|
|
};
|
|
|
|
###### implementation
|
|
|
|
config = mkIf cfg.enable {
|
|
|
|
services.unbound.settings = {
|
|
server = {
|
|
directory = mkDefault cfg.stateDir;
|
|
username = cfg.user;
|
|
chroot = ''""'';
|
|
pidfile = ''""'';
|
|
# when running under systemd there is no need to daemonize
|
|
do-daemonize = false;
|
|
interface = mkDefault ([ "127.0.0.1" ] ++ (optional config.networking.enableIPv6 "::1"));
|
|
access-control = mkDefault ([ "127.0.0.0/8 allow" ] ++ (optional config.networking.enableIPv6 "::1/128 allow"));
|
|
auto-trust-anchor-file = mkIf cfg.enableRootTrustAnchor rootTrustAnchorFile;
|
|
tls-cert-bundle = mkDefault "/etc/ssl/certs/ca-certificates.crt";
|
|
# prevent race conditions on system startup when interfaces are not yet
|
|
# configured
|
|
ip-freebind = mkDefault true;
|
|
define-tag = mkDefault "";
|
|
};
|
|
remote-control = {
|
|
control-enable = mkDefault false;
|
|
control-interface = mkDefault ([ "127.0.0.1" ] ++ (optional config.networking.enableIPv6 "::1"));
|
|
server-key-file = mkDefault "${cfg.stateDir}/unbound_server.key";
|
|
server-cert-file = mkDefault "${cfg.stateDir}/unbound_server.pem";
|
|
control-key-file = mkDefault "${cfg.stateDir}/unbound_control.key";
|
|
control-cert-file = mkDefault "${cfg.stateDir}/unbound_control.pem";
|
|
} // optionalAttrs (cfg.localControlSocketPath != null) {
|
|
control-enable = true;
|
|
control-interface = cfg.localControlSocketPath;
|
|
};
|
|
};
|
|
|
|
environment.systemPackages = [ cfg.package ];
|
|
|
|
users.users = mkIf (cfg.user == "unbound") {
|
|
unbound = {
|
|
description = "unbound daemon user";
|
|
isSystemUser = true;
|
|
group = cfg.group;
|
|
};
|
|
};
|
|
|
|
users.groups = mkIf (cfg.group == "unbound") {
|
|
unbound = {};
|
|
};
|
|
|
|
networking = mkIf cfg.resolveLocalQueries {
|
|
resolvconf = {
|
|
useLocalResolver = mkDefault true;
|
|
};
|
|
|
|
networkmanager.dns = "unbound";
|
|
};
|
|
|
|
environment.etc."unbound/unbound.conf".source = confFile;
|
|
|
|
systemd.services.unbound = {
|
|
description = "Unbound recursive Domain Name Server";
|
|
after = [ "network.target" ];
|
|
before = [ "nss-lookup.target" ];
|
|
wantedBy = [ "multi-user.target" "nss-lookup.target" ];
|
|
|
|
path = mkIf cfg.settings.remote-control.control-enable [ pkgs.openssl ];
|
|
|
|
preStart = ''
|
|
${optionalString cfg.enableRootTrustAnchor ''
|
|
${cfg.package}/bin/unbound-anchor -a ${rootTrustAnchorFile} || echo "Root anchor updated!"
|
|
''}
|
|
${optionalString cfg.settings.remote-control.control-enable ''
|
|
${cfg.package}/bin/unbound-control-setup -d ${cfg.stateDir}
|
|
''}
|
|
'';
|
|
|
|
restartTriggers = [
|
|
confFile
|
|
];
|
|
|
|
serviceConfig = {
|
|
ExecStart = "${cfg.package}/bin/unbound -p -d -c /etc/unbound/unbound.conf";
|
|
ExecReload = "+/run/current-system/sw/bin/kill -HUP $MAINPID";
|
|
|
|
NotifyAccess = "main";
|
|
Type = "notify";
|
|
|
|
# FIXME: Which of these do we actualy need, can we drop the chroot flag?
|
|
AmbientCapabilities = [
|
|
"CAP_NET_BIND_SERVICE"
|
|
"CAP_NET_RAW"
|
|
"CAP_SETGID"
|
|
"CAP_SETUID"
|
|
"CAP_SYS_CHROOT"
|
|
"CAP_SYS_RESOURCE"
|
|
];
|
|
|
|
User = cfg.user;
|
|
Group = cfg.group;
|
|
|
|
MemoryDenyWriteExecute = true;
|
|
NoNewPrivileges = true;
|
|
PrivateDevices = true;
|
|
PrivateTmp = true;
|
|
ProtectHome = true;
|
|
ProtectControlGroups = true;
|
|
ProtectKernelModules = true;
|
|
ProtectSystem = "strict";
|
|
RuntimeDirectory = "unbound";
|
|
ConfigurationDirectory = "unbound";
|
|
StateDirectory = "unbound";
|
|
RestrictAddressFamilies = [ "AF_INET" "AF_INET6" "AF_NETLINK" "AF_UNIX" ];
|
|
RestrictRealtime = true;
|
|
SystemCallArchitectures = "native";
|
|
SystemCallFilter = [
|
|
"~@clock"
|
|
"@cpu-emulation"
|
|
"@debug"
|
|
"@keyring"
|
|
"@module"
|
|
"mount"
|
|
"@obsolete"
|
|
"@resources"
|
|
];
|
|
RestrictNamespaces = true;
|
|
LockPersonality = true;
|
|
RestrictSUIDSGID = true;
|
|
|
|
Restart = "on-failure";
|
|
RestartSec = "5s";
|
|
};
|
|
};
|
|
};
|
|
|
|
imports = [
|
|
(mkRenamedOptionModule [ "services" "unbound" "interfaces" ] [ "services" "unbound" "settings" "server" "interface" ])
|
|
(mkChangedOptionModule [ "services" "unbound" "allowedAccess" ] [ "services" "unbound" "settings" "server" "access-control" ] (
|
|
config: map (value: "${value} allow") (getAttrFromPath [ "services" "unbound" "allowedAccess" ] config)
|
|
))
|
|
(mkRemovedOptionModule [ "services" "unbound" "forwardAddresses" ] ''
|
|
Add a new setting:
|
|
services.unbound.settings.forward-zone = [{
|
|
name = ".";
|
|
forward-addr = [ # Your current services.unbound.forwardAddresses ];
|
|
}];
|
|
If any of those addresses are local addresses (127.0.0.1 or ::1), you must
|
|
also set services.unbound.settings.server.do-not-query-localhost to false.
|
|
'')
|
|
(mkRemovedOptionModule [ "services" "unbound" "extraConfig" ] ''
|
|
You can use services.unbound.settings to add any configuration you want.
|
|
'')
|
|
];
|
|
}
|