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-rw-r--r--lass/2configs/wiregrill.nix44
1 files changed, 44 insertions, 0 deletions
diff --git a/lass/2configs/wiregrill.nix b/lass/2configs/wiregrill.nix
new file mode 100644
index 000000000..b2ee35df3
--- /dev/null
+++ b/lass/2configs/wiregrill.nix
@@ -0,0 +1,44 @@
+with import <stockholm/lib>;
+{ config, pkgs, ... }: let
+
+ self = config.krebs.build.host.nets.wiregrill;
+ isRouter = !isNull self.via;
+
+in mkIf (hasAttr "wiregrill" config.krebs.build.host.nets) {
+ #hack for modprobe inside containers
+ systemd.services."wireguard-wiregrill".path = mkIf config.boot.isContainer (mkBefore [
+ (pkgs.writeDashBin "modprobe" ":")
+ ]);
+
+ boot.kernel.sysctl = mkIf isRouter {
+ "net.ipv6.conf.all.forwarding" = 1;
+ };
+ krebs.iptables.tables.filter.INPUT.rules = [
+ { predicate = "-p udp --dport ${toString self.wireguard.port}"; target = "ACCEPT"; }
+ ];
+ krebs.iptables.tables.filter.FORWARD.rules = mkIf isRouter [
+ { precedence = 1000; predicate = "-i wiregrill -o wiregrill"; target = "ACCEPT"; }
+ ];
+
+ networking.wireguard.interfaces.wiregrill = {
+ ips =
+ (optional (!isNull self.ip4) self.ip4.addr) ++
+ (optional (!isNull self.ip6) self.ip6.addr);
+ listenPort = 51820;
+ privateKeyFile = (toString <secrets>) + "/wiregrill.key";
+ allowedIPsAsRoutes = true;
+ peers = mapAttrsToList
+ (_: host: {
+ allowedIPs = if isRouter then
+ (optional (!isNull host.nets.wiregrill.ip4) host.nets.wiregrill.ip4.addr) ++
+ (optional (!isNull host.nets.wiregrill.ip6) host.nets.wiregrill.ip6.addr)
+ else
+ host.nets.wiregrill.wireguard.subnets
+ ;
+ endpoint = mkIf (!isNull host.nets.wiregrill.via) (host.nets.wiregrill.via.ip4.addr + ":${toString host.nets.wiregrill.wireguard.port}");
+ persistentKeepalive = mkIf (!isNull host.nets.wiregrill.via) 61;
+ publicKey = host.nets.wiregrill.wireguard.pubkey;
+ })
+ (filterAttrs (_: h: hasAttr "wiregrill" h.nets) config.krebs.hosts);
+ };
+}