From 64eee34bbeac88ef8c4c27c8b4245ac0aaa7bfe7 Mon Sep 17 00:00:00 2001
From: makefu <github@syntax-fehler.de>
Date: Mon, 17 Jun 2019 07:53:44 +0200
Subject: ma wiregrill: init

---
 makefu/2configs/wireguard/wiregrill.nix | 46 +++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 makefu/2configs/wireguard/wiregrill.nix

(limited to 'makefu/2configs')

diff --git a/makefu/2configs/wireguard/wiregrill.nix b/makefu/2configs/wireguard/wiregrill.nix
new file mode 100644
index 00000000..08209075
--- /dev/null
+++ b/makefu/2configs/wireguard/wiregrill.nix
@@ -0,0 +1,46 @@
+with import <stockholm/lib>;
+{ config, pkgs, ... }: let
+
+  self = config.krebs.build.host.nets.wiregrill;
+  isRouter = !isNull self.via; # via "internet" is not set
+  ext-if = config.makefu.server.primary-itf;
+
+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;
+  };
+
+  networking.firewall = {
+    allowedUDPPorts = [ self.wireguard.port ];
+    extraCommands = ''
+      iptables -A FORWARD -i wiregrill -o wiregrill -j ACCEPT
+    '';
+  };
+
+  networking.wireguard.interfaces.wiregrill = {
+    ips =
+      (optional (!isNull self.ip4) self.ip4.addr) ++
+      (optional (!isNull self.ip6) self.ip6.addr);
+    listenPort = self.wireguard.port;
+    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 = (replaceStrings ["\n"] [""] host.nets.wiregrill.wireguard.pubkey);
+      })
+      (filterAttrs (_: h: hasAttr "wiregrill" h.nets) config.krebs.hosts);
+  };
+}
-- 
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