mirror of
https://github.com/JulienMalka/snowfield.git
synced 2025-03-28 14:50:55 +01:00
68 lines
2 KiB
Nix
68 lines
2 KiB
Nix
{ pkgs, stdenv }:
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with pkgs;
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stdenv.mkDerivation rec {
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pname = "flaresolverr";
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version = "2.2.6";
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src = fetchurl {
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url = "https://github.com/FlareSolverr/FlareSolverr/releases/download/v2.2.6/flaresolverr-v2.2.6-linux-x64.zip";
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sha256 = "sha256-ou+hKcIn3NO1/ZzyP69LOtpd1NbATNUg6KDRxCbyen4=";
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};
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nativeBuildInputs = [
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unzip
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];
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buildInputs = [ gcc stdenv.cc.cc.lib firefox ];
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preFixup = let
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libPath = lib.makeLibraryPath [stdenv.cc.cc];
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in ''
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orig_size=$(stat --printf=%s $out/bin/flaresolverr)
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patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/bin/flaresolverr
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patchelf --set-rpath ${libPath} $out/bin/flaresolverr
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chmod +x $out/bin/flaresolverr
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new_size=$(stat --printf=%s $out/bin/flaresolverr)
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###### zeit-pkg fixing starts here.
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# we're replacing plaintext js code that looks like
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# PAYLOAD_POSITION = '1234 ' | 0
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# [...]
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# PRELUDE_POSITION = '1234 ' | 0
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# ^-----20-chars-----^^------22-chars------^
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# ^-- grep points here
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#
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# var_* are as described above
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# shift_by seems to be safe so long as all patchelf adjustments occur
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# before any locations pointed to by hardcoded offsets
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var_skip=20
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var_select=22
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shift_by=$(expr $new_size - $orig_size)
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function fix_offset {
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# $1 = name of variable to adjust
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location=$(grep -obUam1 "$1" $out/bin/flaresolverr | cut -d: -f1)
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location=$(expr $location + $var_skip)
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value=$(dd if=$out/bin/flaresolverr iflag=count_bytes,skip_bytes skip=$location \
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bs=1 count=$var_select status=none)
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value=$(expr $shift_by + $value)
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echo -n $value | dd of=$out/bin/flaresolverr bs=1 seek=$location conv=notrunc
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}
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fix_offset PAYLOAD_POSITION
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fix_offset PRELUDE_POSITION
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'';
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installPhase = ''
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mkdir -p $out/bin
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cp flaresolverr $out/bin/
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mkdir -p $out/bin/firefox
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ln -s ${pkgs.firefox}/bin/firefox $out/bin/firefox/firefox
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'';
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dontStrip = true;
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}
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