From c2abe4da6c0e19358d46e6fdd4d5ff5bfddfff82 Mon Sep 17 00:00:00 2001
From: aszlig <aszlig@redmoonstudios.org>
Date: Wed, 19 Mar 2014 11:32:39 +0100
Subject: [PATCH] chromium: Add support for ppapi flash and PDF.

This is hardcoded for the dev channel at the moment and we're going to
fetch it along with the main Chromium sources.

Also I'm putting this in default.nix at the moment, because we're going
to tear apart the whole Chromium package into several subparts soon.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
---
 .../networking/browsers/chromium/default.nix  | 74 ++++++++++++++++++-
 1 file changed, 72 insertions(+), 2 deletions(-)

diff --git a/pkgs/applications/networking/browsers/chromium/default.nix b/pkgs/applications/networking/browsers/chromium/default.nix
index dcd2f78a4f5e..b70825670156 100644
--- a/pkgs/applications/networking/browsers/chromium/default.nix
+++ b/pkgs/applications/networking/browsers/chromium/default.nix
@@ -26,6 +26,8 @@
 , gnomeSupport ? false, gconf ? null
 , gnomeKeyringSupport ? false, libgnome_keyring3 ? null
 , proprietaryCodecs ? true
+, enablePepperFlash ? false
+, enablePepperPDF ? false
 , cupsSupport ? false
 , pulseSupport ? false, pulseaudio ? null
 }:
@@ -151,6 +153,68 @@ let
     binary = "${packageName}_sandbox";
   };
 
+  binaryPlugins = stdenv.mkDerivation {
+    name = "chromium-binary-plugins";
+
+    # XXX: Only temporary and has to be version-specific
+    src = fetchurl {
+      url = "https://dl.google.com/linux/chrome/deb/pool/main/g/"
+          + "google-chrome-unstable/google-chrome-unstable_"
+          + "35.0.1897.2-1_amd64.deb";
+      sha1 = "b68683fc5321d10536e4135c266b14894b7668ed";
+    };
+
+    phases = [ "unpackPhase" "patchPhase" "checkPhase" "installPhase" ];
+    outputs = [ "pdf" "flash" ];
+
+    unpackCmd = ''
+      ensureDir plugins
+      ar p "$src" data.tar.lzma | tar xJ -C plugins --strip-components=4 \
+        ./opt/google/chrome-unstable/PepperFlash \
+        ./opt/google/chrome-unstable/libpdf.so
+    '';
+
+    doCheck = true;
+    checkPhase = ''
+      ! find -iname '*.so' -exec ldd {} + | grep 'not found'
+    '';
+
+    patchPhase = let
+      rpaths = [ stdenv.gcc.gcc ];
+      mkrpath = p: "${makeSearchPath "lib64" p}:${makeSearchPath "lib" p}";
+    in ''
+      for sofile in PepperFlash/libpepflashplayer.so libpdf.so; do
+        chmod +x "$sofile"
+        patchelf --set-rpath "${mkrpath rpaths}" "$sofile"
+      done
+    '';
+
+    installPhase = let
+      pdfName = "Chrome PDF Viewer";
+      pdfDescription = "Portable Document Format";
+      pdfMimeTypes = concatStringsSep ";" [
+        "application/pdf"
+        "application/x-google-chrome-print-preview-pdf"
+      ];
+      pdfInfo = "#${pdfName}#${pdfDescription};${pdfMimeTypes}";
+    in ''
+      install -vD libpdf.so "$pdf/lib/libpdf.so"
+      ensureDir "$pdf/nix-support"
+      echo "--register-pepper-plugins='$pdf/lib/libpdf.so${pdfInfo}'" \
+        > "$pdf/nix-support/chromium-flags"
+
+      flashVersion="$(
+        sed -n -r 's/.*"version": "([^"]+)",.*/\1/p' PepperFlash/manifest.json
+      )"
+
+      install -vD libpepflashplayer.so "$flash/lib/libpepflashplayer.so"
+      ensureDir "$flash/nix-support"
+      echo "--ppapi-flash-path='$flash/lib/libpepflashplayer.so'" \
+           "--ppapi-flash-version=$flashVersion" \
+           > "$flash/nix-support/chromium-flags"
+    '';
+  };
+
   # build paths and release info
   packageName = "chromium";
   buildType = "Release";
@@ -248,7 +312,12 @@ in stdenv.mkDerivation rec {
         chrome ${optionalString (!enableSELinux) "chrome_sandbox"}
   '';
 
-  installPhase = ''
+  installPhase = let
+    enabledPlugins = optional enablePepperFlash binaryPlugins.flash
+                  ++ optional enablePepperPDF   binaryPlugins.pdf;
+    getFlags = plugin: "$(< ${plugin}/nix-support/chromium-flags)";
+    pluginArgs = concatStringsSep " " (map getFlags enabledPlugins);
+  in ''
     ensureDir "${libExecPath}"
     cp -v "${buildPath}/"*.pak "${libExecPath}/"
     ${optionalString (!versionOlder src.version "34.0.0.0") ''
@@ -260,7 +329,8 @@ in stdenv.mkDerivation rec {
     cp -v "${buildPath}/chrome" "${libExecPath}/${packageName}"
 
     mkdir -vp "$out/bin"
-    makeWrapper "${libExecPath}/${packageName}" "$out/bin/${packageName}"
+    makeWrapper "${libExecPath}/${packageName}" "$out/bin/${packageName}" \
+      --add-flags "${pluginArgs}"
 
     mkdir -vp "$out/share/man/man1"
     cp -v "${buildPath}/chrome.1" "$out/share/man/man1/${packageName}.1"