devos/profiles/misc/adblocking.nix
2020-07-14 17:31:09 -06:00

42 lines
929 B
Nix

{ pkgs, ... }:
let
inherit (builtins) concatStringsSep;
inherit (pkgs) fetchFromGitHub stdenv gnugrep;
inherit (builtins) readFile fetchurl;
hosts = stdenv.mkDerivation {
name = "hosts";
src = fetchFromGitHub {
owner = "StevenBlack";
repo = "hosts";
rev = "ca3a99a0499add858969ce8747049e681b85a2e2";
hash = "sha256-DMIal28cTr/8oij89LwSvNp7n1QiwzNmwsiSzV9X49c=";
};
nativeBuildInputs = [ gnugrep ];
installPhase = ''
mkdir -p $out/etc
# filter whitelist
grep -Ev '(${whitelist})' hosts > $out/etc/hosts
# filter blacklist
cat << EOF >> $out/etc/hosts
${blacklist}
EOF
'';
};
whitelist = concatStringsSep "|" [ ".*pirate(bay|proxy).*" ];
blacklist = concatStringsSep ''
0.0.0.0 '' [
"# auto-generated: must be first"
# starts here
];
in { networking.extraHosts = readFile "${hosts}/etc/hosts"; }