dotfiles/nixos/systems/blowhole/bind.nix

{
  lib,
  pkgs,
  secret,
  ...
}: let
  inherit
    (lib)
    concatMapStringsSep
    ;

  loggingConfig = ''
    logging {
      ${concatMapStringsSep "\n" (x: ''
        channel ${x}_file {
          file "/var/log/named/${x}.log" versions 3 size 5m;
          severity dynamic;
          print-time yes;
        };
        category ${x} { ${x}_file; };
      '') [
        "default"
        "database"
        "security"
        "config"
        "resolver"
        "xfer-in"
        "xfer-out"
        "notify"
        "client"
        "unmatched"
        "queries"
        "network"
        "update"
        "network"
        "dispatch"
        "dnssec"
        "lame-servers"
      ]}
    };
  '';
in {
  systemd.tmpfiles.rules = [
    "d     /var/log/named   0750 named named  - -"
  ];

  services.bind = {
    enable = true;
    forward = "only";
    forwarders = [
      "127.0.0.1 port 5353"
    ];

    directory = "/var/lib/bind";
    zones = {
      "in.redalder.org" = {
        file = ./zones/in.redalder.org.zone;
        master = true;
      };
      "hosts.in.redalder.org" = {
        file = ./zones/hosts.in.redalder.org.zone;
        master = true;
      };
    };

    cacheNetworks = [
      "127.0.0.0/8"
      (secret.network.networks.home.wireless or "")
      (secret.network.networks.home.mine or "")
      "10.64.99.0/24"
      (secret.network.networks.home.amsterdam or "")
      (secret.network.networks.vpn or "")
      "172.26.64.0/20"
      "10.64.48.0/21"
      "172.26.96.0/24"
      "172.26.80.0/20"
    ];
    extraConfig = loggingConfig;
    extraOptions = ''
      # recursion yes;
      dnssec-validation auto;
    '';
  };

  systemd.services.bind = {
    before = ["network-online.target"];
  };
}