# This is a simple distributed test involving a topology with two
# separate virtual networks - the "inside" and the "outside" - with a
# client on the inside network, a server on the outside network, and a
# router connected to both that performs Network Address Translation
# for the client.
import ./make-test-python.nix (
  { pkgs, lib, ... }:
  let
    routerBase = lib.mkMerge [
      {
        virtualisation.vlans = [
          2
          1
        ];
        networking.nftables.enable = true;
        networking.nat.internalIPs = [ "192.168.1.0/24" ];
        networking.nat.externalInterface = "eth1";
      }
    ];
  in
  {
    name = "dublin-traceroute";
    meta = with pkgs.lib.maintainers; {
      maintainers = [ baloo ];
    };

    nodes.client =
      { nodes, ... }:
      {
        imports = [ ./common/user-account.nix ];
        virtualisation.vlans = [ 1 ];

        networking.defaultGateway =
          (builtins.head nodes.router.networking.interfaces.eth2.ipv4.addresses).address;
        networking.nftables.enable = true;

        programs.dublin-traceroute.enable = true;
      };

    nodes.router =
      { ... }:
      {
        virtualisation.vlans = [
          2
          1
        ];
        networking.nftables.enable = true;
        networking.nat.internalIPs = [ "192.168.1.0/24" ];
        networking.nat.externalInterface = "eth1";
        networking.nat.enable = true;
      };

    nodes.server =
      { ... }:
      {
        virtualisation.vlans = [ 2 ];
        networking.firewall.enable = false;
        services.httpd.enable = true;
        services.httpd.adminAddr = "foo@example.org";
        services.vsftpd.enable = true;
        services.vsftpd.anonymousUser = true;
      };

    testScript = ''
      client.start()
      router.start()
      server.start()

      server.wait_for_unit("network.target")
      router.wait_for_unit("network.target")
      client.wait_for_unit("network.target")

      # Make sure we can trace from an unprivileged user
      client.succeed("sudo -u alice dublin-traceroute server")
    '';
  }
)