configuration.nix

{config, pkgs, ... }:


{
  imports =
    [ # Include the results of the hardware scan.
      #./hardware-configuration.nix
    ];

  # Bootloader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  networking.hostName = "nixos"; # Define your hostname.
  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.

  # Configure network proxy if necessary
  # networking.proxy.default = "http://user:password@proxy:port/";
  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";

  # Enable networking
  networking.networkmanager.enable = true;

  # Set your time zone.
  time.timeZone = "Asia/Kolkata";

  # Select internationalisation properties.
  i18n.defaultLocale = "en_IN";

  i18n.extraLocaleSettings = {
    LC_ADDRESS = "en_IN";
    LC_IDENTIFICATION = "en_IN";
    LC_MEASUREMENT = "en_IN";
    LC_MONETARY = "en_IN";
    LC_NAME = "en_IN";
    LC_NUMERIC = "en_IN";
    LC_PAPER = "en_IN";
    LC_TELEPHONE = "en_IN";
    LC_TIME = "en_IN";
  };

  # Enable the X11 windowing system.
  services.xserver.enable = true;

  # Enable the GNOME Desktop Environment.
  services.xserver.displayManager.gdm.enable = true;
  services.xserver.desktopManager.gnome.enable = true;

  # Configure keymap in X11
  services.xserver = {
    layout = "us";
    xkbVariant = "";
  };

  # Enable CUPS to print documents.
  services.printing.enable = true;

  # Enable sound with pipewire.
  sound.enable = true;
  hardware.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
    # If you want to use JACK applications, uncomment this
    #jack.enable = true;

    # use the example session manager (no others are packaged yet so this is enabled by default,
    # no need to redefine it in your config for now)
    #media-session.enable = true;
  };

  # Enable touchpad support (enabled default in most desktopManager).
  # services.xserver.libinput.enable = true;

  ## SETUP FOR THE CIENT SIDE OF THE WIREGUARD VPN SERVICE

   networking.firewall = {
    allowedUDPPorts = [ 51820 ]; # Clients and peers can use the same port, see listenport
  };
  # Enable WireGuard
  networking.wireguard.interfaces = {
    # "wg0" is the network interface name. You can name the interface arbitrarily.
    wg0 = {
      # Determines the IP address and subnet of the client's end of the tunnel interface.
      ips = [ "10.100.0.2/24" ];
      listenPort = 51820; # to match firewall allowedUDPPorts (without this wg uses random port numbers)

      # Path to the private key file.
      #
      # Note: The private key can also be included inline via the privateKey option,
      # but this makes the private key world-readable; thus, using privateKeyFile is
      # recommended.
      privateKeyFile = "nixos-config/wireguard-keys/your-key-file";

      peers = [
        # For a client configuration, one peer entry for the server will suffice.

        {
          # Public key of the server (not a file path).
          publicKey = "{server public key}";

          # Forward all the traffic via VPN.
          allowedIPs = [ "0.0.0.0/0" ];
          # Or forward only particular subnets
          #allowedIPs = [ "10.100.0.1" "91.108.12.0/22" ];

          # Set this to the server IP and port.
          endpoint = "{server ip}:51820"; # ToDo: route to endpoint not automatically configured https://wiki.archlinux.org/index.php/WireGuard#Loop_routing https://discourse.nixos.org/t/solved-minimal-firewall-setup-for-wireguard-client/7577

          # Send keepalives every 25 seconds. Important to keep NAT tables alive.
          persistentKeepalive = 25;
        }
      ];
    };
  };  


  # openldap config
  services.openldap = {
    enable = true;

    /* enable plain connections only */
    urlList = [ "ldap:///" ];
    rootpw = "password";  # change your root password here 

    settings = {
      attrs = {
        olcLogLevel = "conns config";
      };

      children = {
        "cn=schema".includes = [
          "${pkgs.openldap}/etc/schema/core.ldif"
          "${pkgs.openldap}/etc/schema/cosine.ldif"
          "${pkgs.openldap}/etc/schema/inetorgperson.ldif"
        ];

        "olcDatabase={1}mdb".attrs = {
          objectClass = [ "olcDatabaseConfig" "olcMdbConfig" ];

          olcDatabase = "{1}mdb";
          olcDbDirectory = "/var/lib/openldap/data";

          olcSuffix = "dc=example,dc=com";

          /* your admin account, do not use writeText on a production system */
          olcRootDN = "cn=admin,dc=example,dc=com";
          olcRootPW.path = pkgs.writeText "olcRootPW" "pass";

          olcAccess = [
            /* custom access rules for userPassword attributes */
            ''{0}to attrs=userPassword
                by self write
                by anonymous auth
                by * none''

            /* allow read on anything else */
            ''{1}to *
                by * read''
          ];
        };
      };
    };
  };


  # openvpn config

  services.openvpn.servers = {
    officeVPN  = { config = '' config /root/nixos/openvpn/officeVPN.conf ''; };
    homeVPN    = { config = '' config /root/nixos/openvpn/homeVPN.conf ''; };
    serverVPN  = { config = '' config /root/nixos/openvpn/serverVPN.conf ''; };
  };



  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.vansha = {
    isNormalUser = true;
    description = "vansh aggarwal";
    extraGroups = [ "networkmanager" "wheel" ];
    packages = with pkgs; [
      firefox
    ];
  };

  # Allow unfree packages
  nixpkgs.config.allowUnfree = true;
  nixpkgs.config.permittedInsecurePackages = [
    "python-2.7.18.6"
  ];

  environment.systemPackages = with pkgs; [
    vim 
    python3
    python.pkgs.pip
    git
    # Declare all of your python packages here 
    (python38.withPackages(ps: with ps; [ django ]))
  ];

  system.stateVersion = "23.05"; 


}