chrome/browser/mac/keystone_promote_postflight.sh

   1 #!/bin/bash -p
   2
   3 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style license that can be
   5 # found in the LICENSE file.
   6
   7 # Called as root after Keystone ticket promotion to change the owner, group,
   8 # and permissions on the application.  The application bundle and its contents
   9 # are set to owner root, group wheel, and to be writable only by root, but
  10 # readable and executable (when appropriate) by everyone.
  11 #
  12 # Note that this script will be invoked with the real user ID set to the
  13 # user's ID, but the effective user ID set to 0 (root).  bash -p is used on
  14 # the first line to prevent bash from setting the effective user ID to the
  15 # real user ID (dropping root privileges).
  16 #
  17 # WARNING: This script is NOT currently run when the Keystone ticket is
  18 # promoted during application installation directly from the disk image,
  19 # because the installation process itself handles the same permission fix-ups
  20 # that this script normally would.
  21
  22 set -e
  23
  24 # This script runs as root, so be paranoid about things like ${PATH}.
  25 export PATH="/usr/bin:/usr/sbin:/bin:/sbin"
  26
  27 # Output the pid to stdout before doing anything else.  See
  28 # base/mac/authorization_util.h.
  29 echo "${$}"
  30
  31 if [ ${#} -ne 1 ] ; then
  32   echo "usage: ${0} APP" >& 2
  33   exit 2
  34 fi
  35
  36 APP="${1}"
  37
  38 # Make sure that APP is an absolute path and that it exists.
  39 if [ -z "${APP}" ] || [ "${APP:0:1}" != "/" ] || [ ! -d "${APP}" ] ; then
  40   echo "${0}: must provide an absolute path naming an extant directory" >& 2
  41   exit 3
  42 fi
  43
  44 OWNER_GROUP="root:wheel"
  45 chown -Rh "${OWNER_GROUP}" "${APP}" >& /dev/null
  46
  47 CHMOD_MODE="a+rX,u+w,go-w"
  48 chmod -R "${CHMOD_MODE}" "${APP}" >& /dev/null
  49
  50 # On the Mac, or at least on HFS+, symbolic link permissions are significant,
  51 # but chmod -R and -h can't be used together.  Do another pass to fix the
  52 # permissions on any symbolic links.
  53 find "${APP}" -type l -exec chmod -h "${CHMOD_MODE}" {} + >& /dev/null
  54
  55 exit 0