nixos-config/systems/LoutreOS/configuration.nix

# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:

let
  gitRev = "4c45e960e797d660358a11723e736afee3998261";
  nixpkgs = fetchTarball "https://github.com/nyanloutre/nixpkgs/archive/${gitRev}.tar.gz";
in
{
  imports = [
    ../common-cli.nix
    ./hardware-configuration.nix
    ./users.nix
    ./services.nix
  ];

  boot = {
    loader = {
      systemd-boot.enable = true;
      efi.canTouchEfiVariables = true;
    };

    supportedFilesystems = [ "zfs" ];

    tmpOnTmpfs = true;
  };

  nix.nixPath = [
    "nixpkgs=${nixpkgs}"
    "nixos-config=/etc/nixos/configuration.nix"
  ];

  nixpkgs.config.allowUnfree = false;
  nixpkgs.config.allowUnfreePredicate = (pkg: builtins.elem pkg.pname or (builtins.parseDrvName pkg.name).name [ "factorio-headless" "perl5.30.1-slimserver" "minecraft-server" ]);

  services.zfs = {
    autoSnapshot.enable = true;
    autoScrub.enable = true;
  };

  hardware.usbWwan.enable = true;

  # eno1 -> VLAN100 -> Internet
  # eno2 -> LAN
  # eno3 -> Legacy client DHCP
  # eno4 -> Pas utilisé

  networking = {
    hostName = "loutreos"; # Define your hostname.
    hostId = "7e66e347";

    dhcpcd = {
      persistent = true;
      extraConfig = ''
        interface bouyges
        metric 10
        noarp
        interface enp0s21u2
        metric 999
      '';
    };

    vlans.bouyges = {
      id = 100;
      interface = "eno1";
    };

    interfaces = {
      eno1.useDHCP = false;
      bouyges = {
        # Adresse MAC BBox ? https://lafibre.info/remplacer-bbox/informations-de-connexion-ftth/msg598303/#msg598303
        macAddress = "E8:AD:A6:21:73:68";
      };
      eno2 = {
        ipv4.addresses = [
          { address = "10.30.0.1"; prefixLength = 16; }
        ];
      };
    };

    # NAT bouyges <-> eno2
    nat = {
      enable = true;
      externalInterface = "bouyges";
      # Permet d'utiliser le SNAT plus rapide au lieu de MASQUERADE
      # externalIP = "0.0.0.0";
      internalIPs = [ "10.30.0.0/16" ];
      internalInterfaces = [ "eno2" ];
      forwardPorts = [
        { destination = "10.30.0.1:22"; proto = "tcp"; sourcePort = 8443;}
        { destination = "10.30.135.35:25565"; proto = "tcp"; sourcePort = 25565; loopbackIPs=[ "195.36.180.44" ];}
      ];
    };

    firewall = {
      allowedTCPPorts = [ 80 443 ];
      allowedUDPPorts = [ ];
      interfaces.eno2 = {
        allowedTCPPorts = [
          111 2049 4000 4001 4002 # NFS
          3483 9000 9090 # Slimserver
          1935 # RTMP
        ];
        allowedUDPPorts = [
          111 2049 4000 4001 4002 # NFS
          3483 # Slimserver
        ];
      };
      enable = true;
    };
  };

  services.dhcpd4 = {
    enable = true;
    interfaces = [ "eno2" ];
    machines = [
      { ethernetAddress = "50:c7:bf:b6:b8:ef"; hostName = "HS110"; ipAddress = "10.30.50.7"; }
      { ethernetAddress = "ac:1f:6b:4b:01:15"; hostName = "IPMI"; ipAddress = "10.30.1.1"; }
      { ethernetAddress = "00:1f:c6:6e:d1:f1"; hostName = "minecraftos"; ipAddress = "10.30.135.35"; }
    ];
    extraConfig = ''
      option domain-name-servers 89.234.141.66, 80.67.169.12, 80.67.169.40;
      option subnet-mask 255.255.0.0;
      option routers 10.30.0.1;
      subnet 10.30.0.0 netmask 255.255.0.0 {
        range 10.30.50.0 10.30.250.0;
      }
    '';
  };

  nixpkgs.overlays = [
    (import ../../overlays/riot-web.nix)
  ];

  services.openssh = {
    enable = true;
    permitRootLogin = "no";
    passwordAuthentication = false;
  };

  users = {
    groups.autossh = { };
    users.autossh = {
      home = "/home/autossh";
      createHome = true;
      group = "autossh";
    };
  };

  services.autossh.sessions = [ { extraArguments = "-N -R 0.0.0.0:2222:127.0.0.1:22 loutre@vps772619.ovh.net"; monitoringPort = 20000; name = "backup-ssh-reverse"; user = "autossh"; } ];

  security.sudo.wheelNeedsPassword = false;

  system.stateVersion = "18.03";
}