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path: root/pkgs/tools/networking/opensnitch/daemon.nix
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{ buildGoModule
, fetchFromGitHub
, fetchpatch
, protobuf
, go-protobuf
, pkg-config
, libnetfilter_queue
, libnfnetlink
, lib
, coreutils
, iptables
, makeWrapper
, protoc-gen-go-grpc
}:

buildGoModule rec {
  pname = "opensnitch";
  version = "1.5.0";

  src = fetchFromGitHub {
    owner = "evilsocket";
    repo = "opensnitch";
    rev = "v${version}";
    sha256 = "sha256-vtD82v0VlaJtCICXduD3IxJ0xjlBuzGKLWLoCiwPX2I=";
  };

  patches = [
    # https://github.com/evilsocket/opensnitch/pull/384 don't require
    # a configuration file in /etc
    (fetchpatch {
      name = "dont-require-config-in-etc.patch";
      url = "https://github.com/evilsocket/opensnitch/commit/8a3f63f36aa92658217bbbf46d39e6d20b2c0791.patch";
      sha256 = "sha256-WkwjKTQZppR0nqvRO4xiQoKZ307NvuUwoRx+boIpuTg=";
    })
  ];

  modRoot = "daemon";

  buildInputs = [ libnetfilter_queue libnfnetlink ];

  nativeBuildInputs = [ pkg-config protobuf go-protobuf makeWrapper protoc-gen-go-grpc ];

  vendorSha256 = "sha256-81BKMLuEXA/NeIjO7icBm48ROq6KxAxHtvP0nV5yM5A=";

  preBuild = ''
    make -C ../proto ../daemon/ui/protocol/ui.pb.go
  '';

  postBuild = ''
    mv $GOPATH/bin/daemon $GOPATH/bin/opensnitchd
    mkdir -p $out/etc/opensnitchd $out/lib/systemd/system
    cp system-fw.json $out/etc/opensnitchd/
    substitute default-config.json $out/etc/default-config.json \
      --replace "/var/log/opensnitchd.log" "/dev/stdout" \
      --replace "iptables" "nftables" \
      --replace "ebpf" "proc"
    substitute opensnitchd.service $out/lib/systemd/system/opensnitchd.service \
      --replace "/usr/local/bin/opensnitchd" "$out/bin/opensnitchd" \
      --replace "/etc/opensnitchd/rules" "/var/lib/opensnitch/rules" \
      --replace "/bin/mkdir" "${coreutils}/bin/mkdir"
  '';

  postInstall = ''
    wrapProgram $out/bin/opensnitchd \
      --prefix PATH : ${lib.makeBinPath [ iptables ]}
  '';

  meta = with lib; {
    description = "An application firewall";
    homepage = "https://github.com/evilsocket/opensnitch/wiki";
    license = licenses.gpl3Only;
    maintainers = [ maintainers.raboof ];
    platforms = platforms.linux;
  };
}