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path: root/pkgs/tools/networking/openvpn/default.nix
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{
  lib,
  stdenv,
  fetchurl,
  pkg-config,
  libcap_ng,
  libnl,
  lz4,
  lzo,
  openssl,
  pam,
  useSystemd ? lib.meta.availableOn stdenv.hostPlatform systemd,
  systemd,
  update-systemd-resolved,
  pkcs11Support ? false,
  pkcs11helper,
  nixosTests,
  unixtools,
}:

let
  inherit (lib) optional optionals optionalString;
in
stdenv.mkDerivation (finalAttrs: {
  pname = "openvpn";
  version = "2.6.13";

  src = fetchurl {
    url = "https://swupdate.openvpn.net/community/releases/openvpn-${finalAttrs.version}.tar.gz";
    hash = "sha256-GvELhpIr18mYJ8wPFR3+loQze45evbOXU5FyhBrCSmo=";
  };

  nativeBuildInputs =
    [ pkg-config ]
    ++ lib.optionals stdenv.hostPlatform.isDarwin [
      unixtools.route
      unixtools.ifconfig
    ];

  buildInputs =
    [
      lz4
      lzo
      openssl
    ]
    ++ optionals stdenv.hostPlatform.isLinux [
      libcap_ng
      libnl
      pam
    ]
    ++ optional useSystemd systemd
    ++ optional pkcs11Support pkcs11helper;

  configureFlags =
    optional useSystemd "--enable-systemd"
    ++ optional pkcs11Support "--enable-pkcs11"
    ++ optional stdenv.hostPlatform.isDarwin "--disable-plugin-auth-pam";

  # We used to vendor the update-systemd-resolved script inside libexec,
  # but a separate package was made, that uses libexec/openvpn. Copy it
  # into libexec in case any consumers expect it to be there even though
  # they should use the update-systemd-resolved package instead.
  postInstall =
    ''
      mkdir -p $out/share/doc/openvpn/examples
      cp -r sample/sample-{config-files,keys,scripts}/ $out/share/doc/openvpn/examples
    ''
    + optionalString useSystemd ''
      install -Dm555 -t $out/libexec ${update-systemd-resolved}/libexec/openvpn/*
    '';

  enableParallelBuilding = true;

  passthru.tests = {
    inherit (nixosTests) initrd-network-openvpn systemd-initrd-networkd-openvpn;
  };

  meta = with lib; {
    description = "Robust and highly flexible tunneling application";
    downloadPage = "https://openvpn.net/community-downloads/";
    homepage = "https://openvpn.net/";
    license = licenses.gpl2Only;
    maintainers = with maintainers; [ peterhoeg ];
    platforms = platforms.unix;
    mainProgram = "openvpn";
  };
})