ma lancache-dns: init

makefu/2configs/lanparty/lancache-dns.nix

@@ -0,0 +1,55 @@
+{ pkgs, lib, config, ... }:
+with import <stockholm/lib>;
+let
+  # see https://github.com/zeropingheroes/lancache for full docs
+  lancache-dns = pkgs.stdenv.mkDerivation rec {
+    name = "lancache-dns-2017-06-28";
+    src = pkgs.fetchFromGitHub {
+      # forked: https://github.com/zeropingheroes/lancache-dns
+      repo = "lancache-dns";
+      owner = "zeropingheroes";
+      rev = "420aa62";
+      sha256 = "0ik7by7ripdv2avyy5kk9jp1i7rz9ksc8xmg7n9iik365q9pv94m";
+    };
+    phases = [ "unpackPhase" "installPhase" ];
+    # here we can chance to edit `includes/proxy-cache-paths.conf`
+    installPhase = ''
+      mkdir -p $out
+      cp -r * $out/
+    '';
+  };
+  stateDir = "/var/lib/unbound";
+  user = "unbound";
+  upstream-server = "8.8.8.8";
+in {
+  services.unbound = {
+    enable = true;
+    allowedAccess = [ "10.0.0.0/8" "172.16.0.0/12" "192.168.0.0/16" ];
+    interfaces = ["0.0.0.0" "::" ];
+    forwardAddresses = [ upstream-server ];
+    extraConfig = ''
+      include: "${stateDir}/lancache/*.conf"
+    '';
+  };
+  services.dnscrypt-proxy.enable = lib.mkForce false;
+  virtualisation.libvirtd.enable = lib.mkForce false;
+  systemd.services.dns-lancache-prepare = {
+      wantedBy = [ "unbound.service" ];
+      before = [ "unbound.service" ];
+      after = [ "network-online.target" ];
+      partOf= [ "unbound.service" ];
+
+      path = [ pkgs.gawk pkgs.iproute pkgs.gnused ];
+      script = ''
+        set -xeu
+        current_ip=$(ip route get 8.8.8.8 | awk '/8.8.8.8/ {print $NF}')
+        old_ip=10.1.1.250
+        mkdir -p ${stateDir}
+        rm -rvf ${stateDir}/lancache
+        cp -r ${lancache-dns}/upstreams-available ${stateDir}/lancache
+        sed -i "s/$old_ip/$current_ip/g" ${stateDir}/lancache/*.conf
+        chown -R unbound ${stateDir}
+        '';
+    };
+  networking.firewall.allowedUDPPorts = [ 53 ];
+}