1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/webrtc/trunk/build/mac/make_more_helpers.sh Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,91 @@
1.4 +#!/bin/bash
1.5 +
1.6 +# Copyright (c) 2012 The Chromium Authors. All rights reserved.
1.7 +# Use of this source code is governed by a BSD-style license that can be
1.8 +# found in the LICENSE file.
1.9 +
1.10 +# Usage: make_more_helpers.sh <directory_within_contents> <app_name>
1.11 +#
1.12 +# This script creates additional helper .app bundles for Chromium, based on
1.13 +# the existing helper .app bundle, changing their Mach-O header's flags to
1.14 +# enable and disable various features. Based on Chromium Helper.app, it will
1.15 +# create Chromium Helper EH.app, which has the MH_NO_HEAP_EXECUTION bit
1.16 +# cleared to support Chromium child processes that require an executable heap,
1.17 +# and Chromium Helper NP.app, which has the MH_PIE bit cleared to support
1.18 +# Chromium child processes that cannot tolerate ASLR.
1.19 +#
1.20 +# This script expects to be called from the chrome_exe target as a postbuild,
1.21 +# and operates directly within the built-up browser app's versioned directory.
1.22 +#
1.23 +# Each helper is adjusted by giving it the proper bundle name, renaming the
1.24 +# executable, adjusting several Info.plist keys, and changing the executable's
1.25 +# Mach-O flags.
1.26 +
1.27 +set -eu
1.28 +
1.29 +make_helper() {
1.30 + local containing_dir="${1}"
1.31 + local app_name="${2}"
1.32 + local feature="${3}"
1.33 + local flags="${4}"
1.34 +
1.35 + local helper_name="${app_name} Helper"
1.36 + local helper_stem="${containing_dir}/${helper_name}"
1.37 + local original_helper="${helper_stem}.app"
1.38 + if [[ ! -d "${original_helper}" ]]; then
1.39 + echo "${0}: error: ${original_helper} is a required directory" >& 2
1.40 + exit 1
1.41 + fi
1.42 + local original_helper_exe="${original_helper}/Contents/MacOS/${helper_name}"
1.43 + if [[ ! -f "${original_helper_exe}" ]]; then
1.44 + echo "${0}: error: ${original_helper_exe} is a required file" >& 2
1.45 + exit 1
1.46 + fi
1.47 +
1.48 + local feature_helper="${helper_stem} ${feature}.app"
1.49 +
1.50 + rsync -acC --delete --include '*.so' "${original_helper}/" "${feature_helper}"
1.51 +
1.52 + local helper_feature="${helper_name} ${feature}"
1.53 + local helper_feature_exe="${feature_helper}/Contents/MacOS/${helper_feature}"
1.54 + mv "${feature_helper}/Contents/MacOS/${helper_name}" "${helper_feature_exe}"
1.55 +
1.56 + local change_flags="$(dirname "${0}")/change_mach_o_flags.py"
1.57 + "${change_flags}" ${flags} "${helper_feature_exe}"
1.58 +
1.59 + local feature_info="${feature_helper}/Contents/Info"
1.60 + local feature_info_plist="${feature_info}.plist"
1.61 +
1.62 + defaults write "${feature_info}" "CFBundleDisplayName" "${helper_feature}"
1.63 + defaults write "${feature_info}" "CFBundleExecutable" "${helper_feature}"
1.64 +
1.65 + cfbundleid="$(defaults read "${feature_info}" "CFBundleIdentifier")"
1.66 + feature_cfbundleid="${cfbundleid}.${feature}"
1.67 + defaults write "${feature_info}" "CFBundleIdentifier" "${feature_cfbundleid}"
1.68 +
1.69 + cfbundlename="$(defaults read "${feature_info}" "CFBundleName")"
1.70 + feature_cfbundlename="${cfbundlename} ${feature}"
1.71 + defaults write "${feature_info}" "CFBundleName" "${feature_cfbundlename}"
1.72 +
1.73 + # As usual, defaults might have put the plist into whatever format excites
1.74 + # it, but Info.plists get converted back to the expected XML format.
1.75 + plutil -convert xml1 "${feature_info_plist}"
1.76 +
1.77 + # `defaults` also changes the file permissions, so make the file
1.78 + # world-readable again.
1.79 + chmod a+r "${feature_info_plist}"
1.80 +}
1.81 +
1.82 +if [[ ${#} -ne 2 ]]; then
1.83 + echo "usage: ${0} <directory_within_contents> <app_name>" >& 2
1.84 + exit 1
1.85 +fi
1.86 +
1.87 +DIRECTORY_WITHIN_CONTENTS="${1}"
1.88 +APP_NAME="${2}"
1.89 +
1.90 +CONTENTS_DIR="${BUILT_PRODUCTS_DIR}/${CONTENTS_FOLDER_PATH}"
1.91 +CONTAINING_DIR="${CONTENTS_DIR}/${DIRECTORY_WITHIN_CONTENTS}"
1.92 +
1.93 +make_helper "${CONTAINING_DIR}" "${APP_NAME}" "EH" "--executable-heap"
1.94 +make_helper "${CONTAINING_DIR}" "${APP_NAME}" "NP" "--no-pie"
