servers/mermet/nsd/sourcephile.nix

   1 {pkgs, lib, config, ...}:
   2 with builtins;
   3 let inherit (builtins.extraBuiltins) pass git;
   4     inherit (pkgs.lib) unlinesAttrs;
   5     inherit (config) networking;
   6     inherit (config.services) nsd rspamd;
   7     # Use the Git commit time of the ${zone}.nix file to set the serial number.
   8     # WARNING: the ${zone}.nix must be committed into Git for this to work.
   9     serial = zone: toString (git ./. [ "log" "-1" "--format=%ct" "--" (zone + ".nix") ]);
  10     /*
  11     serial = file: lib.removeSuffix "\n" (readFile
  12       (pkgs.runCommand "zone-serial"
  13         { buildInputs      = [ pkgs.git ];
  14           buildDepends     = [ (toPath ./. + file) ];
  15           preferLocalBuild = true;
  16           allowSubstitutes = false;
  17         } ''
  18         cd ${toPath ./.}
  19         ${pkgs.git}/bin/git log -1 --format="%ct" -- ${file} >$out
  20       ''));
  21     */
  22     # FIXME: make dedicated config options
  23     ipv4 = (elemAt networking.interfaces.enp1s0.ipv4.addresses 0).address;
  24     ipv6 = (elemAt networking.interfaces.enp1s0.ipv6.addresses 0).address;
  25     sourcephileZone = domain: ''
  26       ; A (DNS -> IPv4)
  27       @                   A ${ipv4}
  28       autoconfig          A ${ipv4}
  29       code                A ${ipv4}
  30       git                 A ${ipv4}
  31       imap                A ${ipv4}
  32       mail                A ${ipv4}
  33       ns                  A ${ipv4}
  34       pop                 A ${ipv4}
  35       smtp                A ${ipv4}
  36       submission          A ${ipv4}
  37       www                 A ${ipv4}
  38
  39       ; SPF (Sender Policy Framework)
  40       @ 3600 IN SPF "v=spf1 mx ip4:${ipv4} -all"
  41       @ 3600 IN TXT "v=spf1 mx ip4:${ipv4} -all"
  42
  43       ; MX (Mail eXchange)
  44       @ 180 MX 5 mail
  45
  46       ; SRV (SeRVice)
  47       _git._tcp.git 18000 IN SRV 0 0 9418 git
  48
  49       ; TXT (TeXT)
  50       ''
  51       + lib.optionalString rspamd.dkim.enable
  52           (unlinesAttrs
  53             (selector: sel: sel.dns)
  54             rspamd.dkim.domains."${domain}".selectors)
  55       ;
  56 in
  57 {
  58   services.nsd = {
  59     zones = {
  60       # NOTE: cannot use networking.domain as attr key: infinite recursion.
  61       "sourcephile.fr" = {
  62         data = ''
  63           $ORIGIN ${networking.domainBase}.fr.
  64           $TTL    86400
  65
  66           ; SOA (Start Of Authority)
  67           @ SOA ns admin (
  68             ${serial networking.domainBase} ; Serial number
  69             1d      ; Refresh
  70             15m     ; Retry
  71             2592000 ; Expire
  72             1d      ; TTL (Time To Live) minimum
  73           )
  74
  75           ; NS (Name Server)
  76           @ NS ns
  77           ;@ NS ns6.gandi.net.
  78         ''
  79         + sourcephileZone "${networking.domainBase}.fr";
  80       };
  81     };
  82   };
  83 }