121 lines
3.4 KiB
Nix
121 lines
3.4 KiB
Nix
{ lib, config, pkgs, ... }:
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let
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serverHostName = "vueko";
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peers = {
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hitagi = {
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address = "10.80.0.5";
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publicKey = "t7hpd2yZupAKHxYerHtXnlPRUjV1aGbrrzjYakKdOwE=";
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};
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vueko = {
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address = "10.80.0.6";
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publicKey = "JbOfL4FxPCzJOjI8AGklPHY2FniCXq0QwOa08gjSyns=";
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};
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fuuko = {
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address = "10.80.0.7";
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publicKey = "VXic8mhaJBSl6yFkx0Cu6JI8tqqjjM3UbW7x+05pV0M=";
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};
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mayushii = {
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address = "10.80.0.9";
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publicKey = "nnLdgywXmDg8HWH6I0G28Z2zb4OmmyFDpnvvEBzKJTg=";
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};
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renge = {
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address = "10.80.0.11";
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publicKey = "RlLs/uiWb9qaBU2iDgRag7Q+FFaR7oHI3yOPLZPKgmA=";
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};
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nunotaba = {
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address = "10.80.0.4";
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publicKey = "LscDAJR0IjOzNuwX3geYgcvxyvaNhAOc/ojgvGyunT8=";
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};
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};
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cfg = config.sbruder.wireguard.home;
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enableServer = config.networking.hostName == serverHostName;
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in
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{
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options = {
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sbruder.wireguard.home = {
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enable = lib.mkEnableOption "WireGuard tunnel wg-home";
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address = lib.mkOption {
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type = lib.types.str;
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visible = false;
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readOnly = true;
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};
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};
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};
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config = lib.mkIf cfg.enable {
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sops.secrets.wg-home-private-key = {
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sopsFile = ./../../machines + "/${config.networking.hostName}/secrets.yaml";
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};
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sbruder.wireguard.home.address = peers."${config.networking.hostName}".address;
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networking.wireguard.interfaces.wg-home = {
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privateKeyFile = config.sops.secrets.wg-home-private-key.path;
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ips = [ "${cfg.address}/24" ];
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listenPort = if enableServer then 51820 else null;
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peers =
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if enableServer
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then
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map
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(peerConfig: with peerConfig; {
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allowedIPs = [ "${address}/32" ];
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inherit publicKey;
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})
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(lib.attrValues
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(lib.filterAttrs
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(n: v: n != config.networking.hostName)
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peers))
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else [
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{
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allowedIPs = [ "10.80.0.0/24" ];
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publicKey = peers."${serverHostName}".publicKey;
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#endpoint = "${serverHostName}.sbruder.de:51820"; # not possible because sadly not all devices have IPv6 connectivity
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endpoint = "195.201.139.15:51820";
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persistentKeepalive = 25;
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}
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];
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};
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networking.firewall = {
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trustedInterfaces = [ "wg-home" ];
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allowedUDPPorts = lib.optionals enableServer [
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51820
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53
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];
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};
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boot.kernel.sysctl = lib.optionalAttrs enableServer {
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"net.ipv4.ip_forward" = 1;
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};
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services.bind = lib.mkIf enableServer {
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enable = true;
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zones = lib.singleton {
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name = "vpn.sbruder.de";
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master = true;
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file =
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let
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# !!! very hacky
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hexStringToInt = hex: (builtins.fromTOML "int = 0x${hex}").int;
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peerRecords = lib.concatStrings
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(lib.mapAttrsToList
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(peer: peerConfig: ''
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${peer} IN A ${peerConfig.address}
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'')
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peers);
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peerRecordsHash = builtins.hashString "sha256" peerRecords;
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serial = hexStringToInt (lib.substring 0 8 peerRecordsHash);
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in
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pkgs.writeText "vpn.sbruder.de.zone" (''
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$TTL 3600
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@ IN SOA ${serverHostName}.sbruder.de. hostmaster.sbruder.de. ${toString serial} 28800 3600 604800 3600
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@ IN NS ${serverHostName}.sbruder.de.
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'' + peerRecords);
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};
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};
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};
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}
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