hosts/patate/wireguard.nix

   1 { pkgs, lib, config, hostName, private, ... }:
   2 let
   3   domain = "sourcephile.fr";
   4   iface = "wg-intra";
   5   wg = config.networking.wireguard.interfaces.${iface};
   6   peer = {
   7     publicKey = "tE4fzqDrr7BgfOo9tWgGnpu3v0JRDEUZbJnm9e2F/GA=";
   8     allowedIPs = [ "192.168.42.4/32" ];
   9   };
  10   peers = {
  11     mermet = {
  12       publicKey = "XbTEP2X71LBTjmdmySdiOpQJ+uIomcXvg1aiQGUtWBI=";
  13       endpoint = "mermet.${domain}:43642";
  14       endpointsUpdater.enable = true;
  15       allowedIPs = [ "192.168.42.1/32" ];
  16       persistentKeepalive = 25;
  17       dynamicEndpointRefreshSeconds = 30 * 60;
  18     };
  19     losurdo = {
  20       publicKey = "xsFFep3k8z0pXgUOz4aryOF8l/KPBSOd4WQA26BkXy0=";
  21       #endpoint = "losurdo.${domain}:43642";
  22       allowedIPs = [ "192.168.42.2/32" ];
  23       persistentKeepalive = 5;
  24     };
  25   };
  26   keyToUnitName = lib.replaceChars
  27     [ "/" "-" " " "+" "=" ]
  28     [ "-" "\\x2d" "\\x20" "\\x2b" "\\x3d" ];
  29 in
  30 {
  31 networking.firewall.extraCommands = ''
  32   ip46tables -A nixos-fw -i ${iface} -p tcp -m tcp --dport 22 -j ACCEPT
  33   ip46tables -A nixos-fw -i any -p udp -m udp --dport ${toString wg.listenPort} -j ACCEPT
  34 '';
  35 networking.wireguard.interfaces.${iface} = {
  36   ips = peer.allowedIPs;
  37   # Different from losurdo's listenPort to have them work behind the same NAT.
  38   listenPort = 43644;
  39   privateKeyFile = "${private}/${hostName}/wireguard/${iface}/privateKey";
  40   peers = lib.attrValues peers;
  41 };
  42 networking.hosts = builtins.listToAttrs (lib.concatLists (lib.attrValues (lib.mapAttrs (peerName: peer:
  43   map (ip: lib.nameValuePair (lib.removeSuffix "/32" ip) ["${peerName}.wg"]) peer.allowedIPs
  44   ) peers)));
  45 /*
  46 systemd.services =
  47   {
  48     openssh = {
  49       after = ["wireguard-${iface}.service"];
  50       serviceConfig.Restart = "on-failure";
  51     };
  52   };
  53 services.openssh.listenAddresses = map (ip: {addr=lib.removeSuffix "/32" ip;}) peer.allowedIPs;
  54 */
  55 }