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firefox: enable RLBox sandboxing

Browse Source 
https://hacks.mozilla.org/2021/12/webassembly-and-back-again-fine-grained-sandboxing-in-firefox-95/

Co-authored-by: Jörg Thalheim <joerg@thalheim.io>
This commit is contained in:
Martin Weinelt 2022-03-09 19:40:08 +01:00
parent 47ca51cba9
commit 1530477650
No known key found for this signature in database
GPG Key ID: 87C1E9888F856759
1 changed files with 18 additions and 2 deletions
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20
pkgs/applications/networking/browsers/firefox/common.nix
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@ -15,7 +15,9 @@
, rust-cbindgen, nodejs, nasm, fetchpatch
, gnum4
, gtk3, wrapGAppsHook
, pkgsCross
, debugBuild ? false
, runCommand
### optionals
@ -121,6 +123,15 @@ let
})
else stdenv;
# Compile the wasm32 sysroot to build the RLBox Sandbox
# https://hacks.mozilla.org/2021/12/webassembly-and-back-again-fine-grained-sandboxing-in-firefox-95/
# We only link c++ libs here, our compiler wrapper can find wasi libc and crt itself.
wasiSysRoot = runCommand "wasi-sysroot" {} ''
mkdir -p $out/lib/wasm32-wasi
for lib in ${pkgsCross.wasi32.llvmPackages.libcxx}/lib/* ${pkgsCross.wasi32.llvmPackages.libcxxabi}/lib/*; do
ln -s $lib $out/lib/wasm32-wasi
done
'';
in
buildStdenv.mkDerivation ({
@ -213,7 +224,11 @@ buildStdenv.mkDerivation ({
configureScript="$(realpath ./mach) configure"
export MOZBUILD_STATE_PATH=$(pwd)/mozbuild
'' + (lib.optionalString googleAPISupport ''
'' + (lib.optionalString (lib.versionAtLeast version "95.0") ''
# RBox WASM Sandboxing
export WASM_CC=${pkgsCross.wasi32.stdenv.cc}/bin/${pkgsCross.wasi32.stdenv.cc.targetPrefix}cc
export WASM_CXX=${pkgsCross.wasi32.stdenv.cc}/bin/${pkgsCross.wasi32.stdenv.cc.targetPrefix}c++
'') + (lib.optionalString googleAPISupport ''
# Google API key used by Chromium and Firefox.
# Note: These are for NixOS/nixpkgs use ONLY. For your own distribution,
# please get your own set of keys.
@ -258,6 +273,7 @@ buildStdenv.mkDerivation ({
++ lib.optional ltoSupport "--enable-lto=cross" # Cross-language LTO.
++ lib.optional (ltoSupport && (buildStdenv.isAarch32 || buildStdenv.isi686 || buildStdenv.isx86_64)) "--disable-elf-hack"
++ lib.optional (ltoSupport && !buildStdenv.isDarwin) "--enable-linker=lld"
++ lib.optional (lib.versionAtLeast version "95") "--with-wasi-sysroot=${wasiSysRoot}"
++ flag alsaSupport "alsa"
++ flag pulseaudioSupport "pulseaudio"
@ -277,7 +293,6 @@ buildStdenv.mkDerivation ({
++ lib.optionals enableDebugSymbols [ "--disable-strip" "--disable-install-strip" ]
++ lib.optional enableOfficialBranding "--enable-official-branding"
++ lib.optional (lib.versionAtLeast version "95") "--without-wasm-sandboxed-libraries"
++ extraConfigureFlags;
postConfigure = ''
@ -356,6 +371,7 @@ buildStdenv.mkDerivation ({
inherit applicationName;
inherit tests;
inherit gtk3;
inherit wasiSysRoot;
} // extraPassthru;
hardeningDisable = [ "format" ]; # -Werror=format-security