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authorlassulus <lassulus@lassul.us>2018-12-09 16:54:00 +0100
committerlassulus <lassulus@lassul.us>2018-12-09 16:54:00 +0100
commit9e632ce4905fe46d285ad36f0e5b8a90f5d53dfd (patch)
tree521d2691b4cc7c59e743c1489c08fa4214852db9
parent60f1e40445692451ffa922a1b48d442f8cab2bb7 (diff)
l: add wirelum.nix
-rw-r--r--lass/2configs/default.nix1
-rw-r--r--lass/2configs/wirelum.nix44
2 files changed, 45 insertions, 0 deletions
diff --git a/lass/2configs/default.nix b/lass/2configs/default.nix
index a4311317..dea32d4d 100644
--- a/lass/2configs/default.nix
+++ b/lass/2configs/default.nix
@@ -10,6 +10,7 @@ with import <stockholm/lib>;
./zsh.nix
./htop.nix
./security-workarounds.nix
+ ./wirelum.nix
{
users.extraUsers =
mapAttrs (_: h: { hashedPassword = h; })
diff --git a/lass/2configs/wirelum.nix b/lass/2configs/wirelum.nix
new file mode 100644
index 00000000..cd8a20c6
--- /dev/null
+++ b/lass/2configs/wirelum.nix
@@ -0,0 +1,44 @@
+with import <stockholm/lib>;
+{ config, pkgs, ... }: let
+
+ self = config.krebs.build.host.nets.wirelum;
+ isRouter = !isNull self.via;
+
+in mkIf (hasAttr "wirelum" config.krebs.build.host.nets) {
+ #hack for modprobe inside containers
+ systemd.services."wireguard-wirelum".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 ${toString self.wireguard.port}"; target = "ACCEPT"; }
+ ];
+ krebs.iptables.tables.filter.FORWARD.rules = mkIf isRouter [
+ { precedence = 1000; predicate = "-i wirelum -o wirelum"; target = "ACCEPT"; }
+ ];
+
+ networking.wireguard.interfaces.wirelum = {
+ ips =
+ (optional (!isNull self.ip4) self.ip4.addr) ++
+ (optional (!isNull self.ip6) self.ip6.addr);
+ listenPort = 51820;
+ privateKeyFile = (toString <secrets>) + "/wirelum.key";
+ allowedIPsAsRoutes = true;
+ peers = mapAttrsToList
+ (_: host: {
+ allowedIPs = if isRouter then
+ (optional (!isNull host.nets.wirelum.ip4) host.nets.wirelum.ip4.addr) ++
+ (optional (!isNull host.nets.wirelum.ip6) host.nets.wirelum.ip6.addr)
+ else
+ host.nets.wirelum.wireguard.subnets
+ ;
+ endpoint = mkIf (!isNull host.nets.wirelum.via) (host.nets.wirelum.via.ip4.addr + ":${toString host.nets.wirelum.wireguard.port}");
+ persistentKeepalive = mkIf (!isNull host.nets.wirelum.via) 61;
+ publicKey = host.nets.wirelum.wireguard.pubkey;
+ })
+ (filterAttrs (_: h: hasAttr "wirelum" h.nets) config.krebs.hosts);
+ };
+}