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path: root/hosts/common/optional/services/dhcp.nix
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{ config, lib, pkgs, ... }:
{

  environment = {
    etc = {
      "tftp/ipxe.efi".source = "${pkgs.ipxe}/ipxe.efi";
      "tftp/undionly.kpxe".source = "${pkgs.ipxe}/undionly.kpxe";
    };

    systemPackages = with pkgs; [
      ipxe
      tftp-hpa
    ];
  };

  services = {
    kea.dhcp4 = {
      configFile = config.sops.secrets.kea-dhcp4_conf.path;
      enable = true;
    };

    xinetd = {
      enable = true;
      services = [{
        name = "tftp";
        protocol = "udp";
        server = "${pkgs.tftp-hpa}/sbin/in.tftpd";
        serverArgs = "/etc/tftp";
        user = "root";
      }];
    };
  };

  systemd.services = {
    kea-dhcp4-server = {
      serviceConfig = {
        ExecStart = lib.mkForce ''
          ${pkgs.kea}/bin/kea-dhcp4 -c ''${CREDENTIALS_DIRECTORY}/kea-dhcp4_conf
        '';
        LoadCredential = [ "kea-dhcp4_conf:${config.sops.secrets.kea-dhcp4_conf.path}" ];
      };
    };

    tftpd = {
      after = [ "network.target" ];
      description = "TFTP server";
      serviceConfig = {
        User = "root";
        Group = "root";
        Restart = "always";
        RestartSec = 5;
        Type = "exec";
        ExecStart = "${pkgs.tftp-hpa}/bin/in.tftpd -l -a 192.168.1.1:69 -P /run/tftpd.pid /etc/tftp";
        TimeoutStopSec = 20;
        PIDFile = "/run/tftpd.pid";
      };
      wantedBy = [ "multi-user.target" ];
      after = [ "nftables.service" ];
    };
  };
}