nixpkgs/pkgs/applications/networking/browsers/chromium/plugins.nix
aszlig 61042a5b6a
chromium/plugins: Use @var@ for passing variables
There is already a pull request from @colemickens, who has just reversed
the variable references $flash and $flashVersion but the fix is kinda
fragile as he points out himself in #12713.

The reason the wrong substition was made is that both variables begin
with the same name and we do a simple replace instead of a more
complicated one using builtins.match.

So staying simple but to still not raising issues with other variables
that begin with the same name I'm now using @var@ instead, like we use
in substituteAll and other substituters (like the ones in CMake or
autotools) deal with it.

Note that I'm not using $var$ here to make sure it doesn't get confused
with real shell variables.

So with this fix in place, the wrapper now has the following flags:

  --ppapi-flash-path=/nix/store/.../lib/libpepflashplayer.so
  --ppapi-flash-version=20.0.0.294

Previously we had (#12710):

  --ppapi-flash-path=/nix/store/.../lib/libpepflashplayer.so
  --ppapi-flash-version=/nix/store/...-binary-plugins-flashVersion

Thanks to @colemickens for reporting and putting up a pull request.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Fixes: #12710
Fixes: #12713
2016-02-02 17:39:08 +01:00

118 lines
4.0 KiB
Nix

{ stdenv
, enablePepperFlash ? false
, enableWideVine ? false
, source
}:
with stdenv.lib;
let
# Generate a shell fragment that emits flags appended to the
# final makeWrapper call for wrapping the browser's main binary.
#
# Note that this is shell-escaped so that only the variable specified
# by the "output" attribute is substituted.
mkPluginInfo = { output ? "out", allowedVars ? [ output ]
, flags ? [], envVars ? {}
}: let
shSearch = ["'"] ++ map (var: "@${var}@") allowedVars;
shReplace = ["'\\''"] ++ map (var: "'\"\${${var}}\"'") allowedVars;
# We need to triple-escape "val":
# * First because makeWrapper doesn't do any quoting of its arguments by
# itself.
# * Second because it's passed to the makeWrapper call separated by IFS but
# not by the _real_ arguments, for example the Widevine plugin flags
# contain spaces, so they would end up as separate arguments.
# * Third in order to be correctly quoted for the "echo" call below.
shEsc = val: "'${replaceStrings ["'"] ["'\\''"] val}'";
mkSh = val: "'${replaceStrings shSearch shReplace (shEsc val)}'";
mkFlag = flag: ["--add-flags" (shEsc flag)];
mkEnvVar = key: val: ["--set" (shEsc key) (shEsc val)];
envList = mapAttrsToList mkEnvVar envVars;
quoted = map mkSh (flatten ((map mkFlag flags) ++ envList));
in ''
mkdir -p "''$${output}/nix-support"
echo ${toString quoted} > "''$${output}/nix-support/wrapper-flags"
'';
plugins = stdenv.mkDerivation {
name = "chromium-binary-plugins";
# XXX: Only temporary and has to be version-specific
src = source.plugins;
phases = [ "unpackPhase" "patchPhase" "installPhase" "checkPhase" ];
outputs = [ "flash" "widevine" ];
unpackCmd = let
chan = if source.channel == "dev" then "chrome-unstable"
else if source.channel == "stable" then "chrome"
else "chrome-${source.channel}";
in ''
mkdir -p plugins
ar p "$src" data.tar.xz | tar xJ -C plugins --strip-components=4 \
./opt/google/${chan}/PepperFlash \
./opt/google/${chan}/libwidevinecdm.so \
./opt/google/${chan}/libwidevinecdmadapter.so
'';
doCheck = true;
checkPhase = ''
! find -iname '*.so' -exec ldd {} + | grep 'not found'
'';
patchPhase = let
rpaths = [ stdenv.cc.cc ];
mkrpath = p: "${makeSearchPath "lib64" p}:${makeSearchPath "lib" p}";
in ''
for sofile in PepperFlash/libpepflashplayer.so \
libwidevinecdm.so libwidevinecdmadapter.so; do
chmod +x "$sofile"
patchelf --set-rpath "${mkrpath rpaths}" "$sofile"
done
patchelf --set-rpath "$widevine/lib:${mkrpath rpaths}" \
libwidevinecdmadapter.so
'';
installPhase = let
wvName = "Widevine Content Decryption Module";
wvDescription = "Playback of encrypted HTML audio/video content";
wvMimeTypes = "application/x-ppapi-widevine-cdm";
wvModule = "$widevine/lib/libwidevinecdmadapter.so";
wvInfo = "#${wvName}#${wvDescription};${wvMimeTypes}";
in ''
flashVersion="$(
sed -n -r 's/.*"version": "([^"]+)",.*/\1/p' PepperFlash/manifest.json
)"
install -vD PepperFlash/libpepflashplayer.so \
"$flash/lib/libpepflashplayer.so"
${mkPluginInfo {
output = "flash";
allowedVars = [ "flash" "flashVersion" ];
flags = [
"--ppapi-flash-path=@flash@/lib/libpepflashplayer.so"
"--ppapi-flash-version=@flashVersion@"
];
}}
install -vD libwidevinecdm.so \
"$widevine/lib/libwidevinecdm.so"
install -vD libwidevinecdmadapter.so \
"$widevine/lib/libwidevinecdmadapter.so"
${mkPluginInfo {
output = "widevine";
flags = [ "--register-pepper-plugins=${wvModule}${wvInfo}" ];
envVars.NIX_CHROMIUM_PLUGIN_PATH_WIDEVINE = "@widevine@/lib";
}}
'';
passthru.enabled = optional enablePepperFlash plugins.flash
++ optional enableWideVine plugins.widevine;
};
in plugins