In-application Keystone ticket promotion

chrome/browser/cocoa/keystone_promote_postflight.sh

+#!/bin/bash -p
+
+# Copyright (c) 2009 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.
+
+# Called as root after Keystone ticket promotion to change the owner, group,
+# and permissions on the application.  The application bundle and its contents
+# are set to owner root, group wheel, and to be writable only by root, but
+# readable and executable (when appropriate) by everyone.
+#
+# Note that this script will be invoked with the real user ID set to the
+# user's ID, but the effective user ID set to 0 (root).  bash -p is used on
+# the first line to prevent bash from setting the effective user ID to the
+# real user ID (dropping root privileges).
+
+set -e
+
+# This script runs as root, so be paranoid about things like ${PATH}.
+export PATH="/usr/bin:/usr/sbin:/bin:/sbin"
+
+# Output the pid to stdout before doing anything else.  See
+# chrome/browser/cocoa/authorization_util.h.
+echo "${$}"
+
+if [ ${#} -ne 1 ] ; then
+  echo "usage: ${0} APP" >& 2
+  exit 2
+fi
+
+APP="${1}"
+
+# Make sure that APP is an absolute path and that it exists.
+if [ -z "${APP}" ] || [ "${APP:0:1}" != "/" ] || [ ! -d "${APP}" ] ; then
+  echo "${0}: must provide an absolute path naming an extant directory" >& 2
+  exit 3
+fi
+
+OWNER_GROUP="root:wheel"
+chown -Rh "${OWNER_GROUP}" "${APP}" >& /dev/null
+
+CHMOD_MODE="a+rX,u+w,go-w"
+chmod -R "${CHMOD_MODE}" "${APP}" >& /dev/null
+
+# On the Mac, or at least on HFS+, symbolic link permissions are significant,
+# but chmod -R and -h can't be used together.  Do another pass to fix the
+# permissions on any symbolic links.
+find "${APP}" -type l -exec chmod -h "${CHMOD_MODE}" {} + >& /dev/null
+
+exit 0