Make helper app, get closer to working content shell.

chrome/tools/build/mac/make_more_helpers.sh

-#!/bin/bash
-
-# Copyright (c) 2012 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# Usage: make_more_helpers.sh <version> <app_name>
-#
-# This script creates additional helper .app bundles for Chromium, based on
-# the existing helper .app bundle, changing their Mach-O header's flags to
-# enable and disable various features. Based on Chromium Helper.app, it will
-# create Chromium Helper EH.app, which has the MH_NO_HEAP_EXECUTION bit
-# cleared to support Chromium child processes that require an executable heap,
-# and Chromium Helper NP.app, which has the MH_PIE bit cleared to support
-# Chromium child processes that cannot tolerate ASLR.
-#
-# This script expects to be called from the chrome_exe target as a postbuild,
-# and operates directly within the built-up browser app's versioned directory.
-#
-# Each helper is adjusted by giving it the proper bundle name, renaming the
-# executable, adjusting several Info.plist keys, and changing the executable's
-# Mach-O flags.
-
-set -eu
-
-make_helper() {
-  local versioned_dir="${1}"
-  local app_name="${2}"
-  local feature="${3}"
-  local flags="${4}"
-
-  local helper_name="${app_name} Helper"
-  local helper_stem="${versioned_dir}/${helper_name}"
-  local original_helper="${helper_stem}.app"
-  if [[ ! -d "${original_helper}" ]]; then
-    echo "${0}: error: ${original_helper} is a required directory" >& 2
-    exit 1
-  fi
-  local original_helper_exe="${original_helper}/Contents/MacOS/${helper_name}"
-  if [[ ! -f "${original_helper_exe}" ]]; then
-    echo "${0}: error: ${original_helper_exe} is a required file" >& 2
-    exit 1
-  fi
-
-  local feature_helper="${helper_stem} ${feature}.app"
-
-  rsync -acC --delete --include '*.so' "${original_helper}/" "${feature_helper}"
-
-  local helper_feature="${helper_name} ${feature}"
-  local helper_feature_exe="${feature_helper}/Contents/MacOS/${helper_feature}"
-  mv "${feature_helper}/Contents/MacOS/${helper_name}" "${helper_feature_exe}"
-
-  local change_flags="\
-$(dirname "${0}")/../../../../build/mac/change_mach_o_flags.py"
-  "${change_flags}" ${flags} "${helper_feature_exe}"
-
-  local feature_info="${feature_helper}/Contents/Info"
-  local feature_info_plist="${feature_info}.plist"
-
-  defaults write "${feature_info}" "CFBundleDisplayName" "${helper_feature}"
-  defaults write "${feature_info}" "CFBundleExecutable" "${helper_feature}"
-
-  cfbundleid="$(defaults read "${feature_info}" "CFBundleIdentifier")"
-  feature_cfbundleid="${cfbundleid}.${feature}"
-  defaults write "${feature_info}" "CFBundleIdentifier" "${feature_cfbundleid}"
-
-  cfbundlename="$(defaults read "${feature_info}" "CFBundleName")"
-  feature_cfbundlename="${cfbundlename} ${feature}"
-  defaults write "${feature_info}" "CFBundleName" "${feature_cfbundlename}"
-
-  # As usual, defaults might have put the plist into whatever format excites
-  # it, but Info.plists get converted back to the expected XML format.
-  plutil -convert xml1 "${feature_info_plist}"
-
-  # `defaults` also changes the file permissions, so make the file
-  # world-readable again.
-  chmod a+r "${feature_info_plist}"
-}
-
-if [[ ${#} -ne 2 ]]; then
-  echo "usage: ${0} <version> <app_name>" >& 2
-  exit 1
-fi
-
-VERSION="${1}"
-APP_NAME="${2}"
-
-CONTENTS_DIR="${BUILT_PRODUCTS_DIR}/${CONTENTS_FOLDER_PATH}"
-VERSIONED_DIR="${CONTENTS_DIR}/Versions"
-CURRENT_VERSIONED_DIR="${VERSIONED_DIR}/${VERSION}"
-
-make_helper "${CURRENT_VERSIONED_DIR}" "${APP_NAME}" "EH" "--executable-heap"
-make_helper "${CURRENT_VERSIONED_DIR}" "${APP_NAME}" "NP" "--no-pie"