Merge pull request #17908 from Mic92/ferm

Ferm

lib/maintainers.nix

···
   mcmtroffaes = "Matthias C. M. Troffaes <[e-mail]>";
   meditans = "Carlo Nucera <[e-mail]>";
   meisternu = "Matt Miemiec <[e-mail]>";
+  mic92 = "Jörg Thalheim <[e-mail]>";
   michaelpj = "Michael Peyton Jones <[e-mail]>";
   michalrus = "Michal Rus <[e-mail]>";
   michelk = "Michel Kuhlmann <[e-mail]>";

nixos/modules/module-list.nix

···
   ./services/networking/docker-registry-server.nix
   ./services/networking/ejabberd.nix
   ./services/networking/fan.nix
+  ./services/networking/ferm.nix
   ./services/networking/firefox/sync-server.nix
   ./services/networking/firewall.nix
   ./services/networking/flashpolicyd.nix

nixos/modules/services/networking/ferm.nix

···
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.ferm;
+
+  configFile = pkgs.stdenv.mkDerivation {
+    name = "ferm.conf";
+    text = cfg.config;
+    preferLocalBuild = true;
+    buildCommand = ''
+      echo -n "$text" > $out
+      ${cfg.package}/bin/ferm --noexec $out
+    '';
+  };
+in {
+  options = {
+    services.ferm = {
+      enable = mkOption {
+        default = false;
+        example = true;
+        type = types.bool;
+        description = ''
+          Whether to enable Ferm Firewall.
+          *Warning*: Enabling this service WILL disable the existing NixOS
+          firewall! Default firewall rules provided by packages are not
+          considered at the moment.
+        '';
+      };
+      config = mkOption {
+        description = "Verbatim ferm.conf configuration.";
+        default = "";
+        defaultText = "empty firewall, allows any traffic";
+        type = types.lines;
+      };
+      package = mkOption {
+        description = "The ferm package.";
+        type = types.package;
+        default = pkgs.ferm;
+        defaultText = "pkgs.ferm";
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.services.firewall.enable = false;
+    systemd.services.ferm = {
+      description = "Ferm Firewall";
+      after = [ "ipset.target" ];
+      before = [ "network-pre.target" ];
+      wants = [ "network-pre.target" ];
+      wantedBy = [ "multi-user.target" ];
+      serviceConfig = {
+        Type="oneshot";
+        RemainAfterExit = "yes";
+        ExecStart = "${cfg.package}/bin/ferm ${configFile}";
+        ExecReload = "${cfg.package}/bin/ferm ${configFile}";
+        ExecStop = "${cfg.package}/bin/ferm -F ${configFile}";
+      };
+    };
+  };
+}

pkgs/tools/networking/ferm/default.nix

···
+{ stdenv, fetchurl, makeWrapper, perl, ebtables, ipset, iptables }:
+
+stdenv.mkDerivation rec {
+  version = "2.3";
+  name = "ferm-${version}";
+
+  src = fetchurl {
+    url = "http://ferm.foo-projects.org/download/${version}/ferm-${version}.tar.gz";
+    sha256 = "0jx63fhjw5y1ahgdbn4hgd7sq6clxl80dr8a2hkryibfbwz3vs4x";
+  };
+
+  buildInputs = [ perl ipset ebtables iptables makeWrapper ];
+  preConfigure = ''
+    substituteInPlace config.mk --replace "PERL = /usr/bin/perl" "PERL = ${perl}/bin/perl"
+    substituteInPlace config.mk --replace "PREFIX = /usr" "PREFIX = $out"
+  '';
+  postInstall = ''
+    rm -r $out/lib/systemd
+    for i in "$out/sbin/"*; do
+      wrapProgram "$i" --prefix PATH : "${iptables}/bin:${ipset}/bin:${ebtables}/bin"
+    done
+  '';
+
+  meta = {
+    homepage = http://ferm.foo-projects.org/;
+    description = "Tool to maintain complex firewalls";
+    longDescription = ''
+      ferm is a tool to maintain complex firewalls, without having the trouble to
+      rewrite the complex rules over and over again. ferm allows the entire
+      firewall rule set to be stored in a separate file, and to be loaded with one
+      command. The firewall configuration resembles structured programming-like
+      language, which can contain levels and lists.
+    '';
+    license = stdenv.lib.licenses.gpl2;
+    maintainers = with stdenv.lib.maintainers; [mic92];
+    platforms = stdenv.lib.platforms.linux;
+  };
+}

pkgs/top-level/all-packages.nix

···
 
   fdm = callPackage ../tools/networking/fdm {};
 
+  ferm = callPackage ../tools/networking/ferm { };
+
   fgallery = callPackage ../tools/graphics/fgallery {
     inherit (perlPackages) ImageExifTool JSON;
   };