110 lines
3 KiB
Nix
110 lines
3 KiB
Nix
{
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lib,
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config,
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pkgs,
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...
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}:
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with lib; let
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psCfg = config.pub-solar;
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cfg = config.pub-solar.wireguard.private;
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in {
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options.pub-solar.wireguard.private = {
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ownIPs = mkOption {
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description = ''
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Internal ips in wireguard used for cluster control-plane communication.
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'';
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type = types.listOf types.str;
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default = [];
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};
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privateKeyFile = mkOption {
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description = ''
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Location of private key file
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'';
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type = types.path;
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};
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useDNS = mkOption {
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description = ''
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Whether to use the wireguard DNS
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'';
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default = true;
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type = types.bool;
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};
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fullTunnel = mkOption {
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description = ''
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Whether to tunnel all traffic through the wireguard VPN
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'';
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default = false;
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type = types.bool;
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};
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};
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config = mkIf (builtins.length cfg.ownIPs != 0) {
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networking.firewall.allowedUDPPorts = [51899];
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systemd.network.wait-online.ignoredInterfaces = [ "wg-private" ];
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systemd.services.wireguard-wg-private = {
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wantedBy = [
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"network.target"
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"network-online.target"
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"nss-lookup.target"
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];
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serviceConfig = {
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Type = mkForce "simple";
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Restart = "on-failure";
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RestartSec = "10";
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};
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environment = {
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WG_ENDPOINT_RESOLUTION_RETRIES = "infinity";
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};
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};
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networking.wireguard.interfaces = {
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wg-private = {
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listenPort = 51899;
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mtu = 1300;
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ips = cfg.ownIPs;
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privateKeyFile = cfg.privateKeyFile;
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postSetup = ""
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+ (if cfg.useDNS then ''
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printf "nameserver 10.13.12.7\nnameserver fd00:b12f:acab:1312:acab:7::" | resolvconf -a wg-private -m 0 -x
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'' else "")
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+ (if cfg.fullTunnel then ''
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defaultRoute=$(${pkgs.iproute2}/bin/ip r | ${pkgs.gnugrep}/bin/grep "default via" | head -n 1 | ${pkgs.gawk}/bin/awk '{ print $3 " " $4 " " $5 }')
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ipv4=$(${pkgs.dnsutils}/bin/dig +short A vpn.b12f.io)
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${pkgs.iproute2}/bin/ip route add $ipv4 metric 256 via $defaultRoute
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ipv6=$(${pkgs.dnsutils}/bin/dig +short AAAA vpn.b12f.io)
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${pkgs.iproute2}/bin/ip route add $ipv6 metric 256 via $defaultRoute
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ip -4 route delete default dev wg-private || true
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ip -4 route replace default dev wg-private metric 512
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ip -6 route delete default dev wg-private || true
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ip -6 route replace default dev wg-private metric 512
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'' else "");
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postShutdown = lib.mkIf cfg.useDNS ''
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resolvconf -d wg-private -f
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'';
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peers = [
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{
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# frikandel
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publicKey = "p6YKNYBlySKfhTN+wbSsKdoNjzko/XSAiTAlCJzP1jA=";
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allowedIPs = [
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"10.13.12.0/24"
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"fd00:b12f:acab:1312::/64"
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] ++ (if cfg.fullTunnel then [
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"0.0.0.0/0"
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"::/0"
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] else []);
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endpoint = "vpn.b12f.io:51899";
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dynamicEndpointRefreshSeconds = 30;
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}
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];
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};
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};
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};
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}
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