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|
{
config,
lib,
pkgs,
this,
...
}:
with lib; let
cfg = config.nixfiles.modules.unbound;
in {
options.nixfiles.modules.unbound = {
enable = mkEnableOption "Unbound";
domain = mkOption {
description = "Domain name sans protocol scheme.";
type = with types; str;
default = config.networking.domain;
};
};
config = let
adblock-conf = "${config.services.unbound.stateDir}/adblock.conf";
in
mkIf cfg.enable {
ark.directories = [config.services.unbound.stateDir];
nixfiles.modules = {
redis.enable = true;
promtail.filters = [
{
match = {
# Should be fixed[1] in the next release.
#
# [1]: https://github.com/NLnetLabs/unbound/commit/d7e776114114c16816570e48ab3a27eedc401a0e
selector = ''{syslog_identifier="unbound"} |~ ".*could not SSL_read crypto.*"'';
action = "drop";
drop_counter_reason = "noise";
};
}
];
};
services = {
unbound = {
enable = true;
package = pkgs.unbound-with-systemd.override {
withRedis = true;
withTFO = true;
};
settings = {
server = {
interface = with this.wireguard; [
"127.0.0.1"
"::1"
ipv4.address
ipv6.address
];
local-zone =
concatLists
(mapAttrsToList (h: _: [''"${h}.${cfg.domain}" redirect''])
my.configurations);
local-data = concatLists (mapAttrsToList (hostname: let
domain = "${hostname}.${cfg.domain}";
in
attr: (optionals (hasAttr "wireguard" attr) (with attr.wireguard;
[
''"${domain} 604800 IN A ${ipv4.address}"''
''"${domain} 604800 IN AAAA ${ipv6.address}"''
''"${domain}. A ${ipv4.address}"''
''"${domain}. AAAA ${ipv6.address}"''
]
++ concatMap (domain: [
''"${domain}. A ${ipv4.address}"''
''"${domain}. AAAA ${ipv6.address}"''
])
attr.domains)))
my.configurations);
local-data-ptr = concatLists (mapAttrsToList (hostname: let
domain = "${hostname}.${cfg.domain}";
in
attr: (optionals (hasAttr "wireguard" attr) (with attr.wireguard;
[
''"${ipv4.address} ${domain}"''
''"${ipv6.address} ${domain}"''
]
++ concatMap (domain: [
''"${ipv4.address} ${domain}"''
''"${ipv6.address} ${domain}"''
])
attr.domains)))
my.configurations);
private-domain = map (domain: "${domain}.") [
cfg.domain
"local"
];
private-address = with config.nixfiles.modules.wireguard; [
ipv4.subnet
ipv6.subnet
];
access-control = with config.nixfiles.modules.wireguard; [
"0.0.0.0/0 refuse"
"::/0 refuse"
"127.0.0.0/8 allow"
"::1/128 allow"
"${ipv4.subnet} allow"
"${ipv6.subnet} allow"
];
cache-min-ttl = 0;
serve-expired = true;
serve-expired-reply-ttl = 0;
prefetch = true;
prefetch-key = true;
hide-identity = true;
hide-version = true;
extended-statistics = true;
include = ''"${adblock-conf}"'';
};
forward-zone = [
{
name = ".";
forward-tls-upstream = true;
forward-addr = let
mkDnsOverTls = ips: auth: map (ip: concatStrings [ip "@" auth]) ips;
in
mkDnsOverTls dns.const.quad9.default "853#dns.quad9.net";
}
];
cachedb = with config.services.redis.servers.default; {
backend = "redis";
redis-server-host = bind;
redis-server-port = port;
};
};
enableRootTrustAnchor = true;
localControlSocketPath = "/run/unbound/unbound.socket";
};
# TODO Switch to https://github.com/letsencrypt/unbound_exporter.
prometheus.exporters.unbound = {
enable = true;
listenAddress = mkDefault this.wireguard.ipv4.address;
port = 9167;
fetchType = "uds";
controlInterface = config.services.unbound.localControlSocketPath;
inherit (config.services.unbound) group user;
};
};
systemd = {
services = {
unbound.after = ["unbound-adblock-update.service"];
unbound-adblock-update = {
serviceConfig = with config.services.unbound; {
Type = "oneshot";
User = user;
Group = group;
ExecStart = let
pkg = with pkgs;
writeShellApplication {
name = "unbound-adblock-update";
runtimeInputs = [curl package];
text = ''
curl -s \
"https://pgl.yoyo.org/adservers/serverlist.php?hostformat=unbound&showintro=0&mimetype=plaintext" \
>${adblock-conf}
if [[ -f "${localControlSocketPath}" ]]; then
unbound-control reload
fi
'';
};
in "${pkg}/bin/unbound-adblock-update";
};
};
};
timers.unbound-adblock-update = {
requires = ["network-online.target"];
timerConfig = {
OnCalendar = "daily";
Persistent = true;
Unit = "unbound-adblock-update.service";
};
wantedBy = ["timers.target"];
};
};
boot.kernel.sysctl."net.ipv4.tcp_fastopen" = mkOverride 200 3;
};
}
|
