/core/packaging/macfuse/Install_resources/postupgrade

#!/bin/bash
#
# Copyright (C) 2008 Google. All Rights Reserved.
#

INSTALL_LOG="/tmp/.macfuse-install.log"
FORCE_EMBEDDED_FILE="/tmp/.macfuse-force-embedded"

exec >> "$INSTALL_LOG" 2>&1

PACKAGE_PATH=$1
INSTALL_PATH=$2
INSTALL_VOLUME=$3
SYSTEM_ROOT=$4

# Binaries we use
RESOURCES="${PACKAGE_PATH}/Contents/Resources"
AUTOINSTALLER_NAME="autoinstall-macfuse-core"
AUTOINSTALLER="${RESOURCES}/${AUTOINSTALLER_NAME}"
PATH="/bin:/usr/bin:/usr/sbin"; export PATH

# Header
echo ""
echo -n "Running postflight: "
date
echo ""

# Determine this .pkg's receipt location.
PACKAGE_NAME=$(basename "$PACKAGE_PATH")
if [ -z "$PACKAGE_NAME" ]
then
  echo "Empty PACKAGE_NAME."
  exit 1
fi
FINAL_RECEIPT="${INSTALL_VOLUME}/Library/Receipts/${PACKAGE_NAME}"

# Determine OS version MAJOR-MINOR that we are running on.
OS_VERSION_PATH="${INSTALL_VOLUME}/System/Library/CoreServices/SystemVersion"
OS_VERSION=$(/usr/bin/defaults read "$OS_VERSION_PATH" ProductVersion)
if [ -z "$OS_VERSION" ]
then
  # Unable to get OS X version from volume.
  exit 1
fi
OS_MAJOR=$(echo "$OS_VERSION" | awk -F. '{ print $1 }')
OS_MINOR=$(echo "$OS_VERSION" | awk -F. '{ print $2 }')
if [ \( -z "$OS_MAJOR" \) -o \( -z "$OS_MINOR" \) ]
then
  # Unable to parse OS X version obtained from volume.
  exit 1
fi

CORE_NAME="MacFUSE Core.pkg"

# Some third-party software releases have mis-packaged MacFUSE Core. If this 
# looks to be the case then we need to remove the improper receipt.
if [ -d "$CORE_RECEIPT" ]
then
  CORE_RECEIPT="${INSTALL_VOLUME}/Library/Receipts/${CORE_NAME}"
  CORE_RECEIPT_INFO="${CORE_RECEIPT}/Contents/Info"
  MACFUSE_BUNDLE_ID=$(defaults read "$CORE_RECEIPT_INFO" CFBundleIdentifier)
  if [ "$MACFUSE_BUNDLE_ID" != "com.google.macfuse.core" ]
  then
     echo "Removing broken MacFUSE Core receipt: $CORE_RECEIPT"
     # TODO: Should we also uninstall macfuse core?
     rm -rf "$CORE_RECEIPT"
  fi
fi

# Determine the appropriate embedded pkg for this platform.
OS_MAJOR_MINOR="${OS_MAJOR}.${OS_MINOR}"
EMBEDDED_PKG="${PACKAGE_PATH}/Contents/Resources/${OS_MAJOR_MINOR}/${CORE_NAME}"
INSTALL_EMBEDDED_PKG=1          # Default to installing the embedded .pkg
FAIL_IF_MISSING_EMBEDDED_PKG=1  # Default to fail if no embedded .pkg
echo "Potential embedded package path: ${EMBEDDED_PKG}"

# Use autoinstaller to see if there is a newer MacFUSE Core.
NEW_VERSION=

if [ -f "$FORCE_EMBEDDED_FILE" ]
then
  # We are being forced to use the embedded package and not check for updates
  echo "Found $FORCE_EMBEDDED_FILE; skipping check for online updates"
  rm -f "$FORCE_EMBEDDED_FILE"
else
  AUTOINSTALLER_OUTPUT=$("$AUTOINSTALLER" --list)
  AUTOINSTALLER_RC=$?
  echo "$AUTOINSTALLER_OUTPUT"  # So that we can see in postflight log
  if [ $AUTOINSTALLER_RC -eq 0 ]
  then
    NEW_VERSION=$(unset Version; eval "$AUTOINSTALLER_OUTPUT" > /dev/null; echo "$Version")
    NEW_VERSION_STRING=${NEW_VERSION:-"None"}
    if [ "$NEW_VERSION_STRING" = "None" ]
    then
      FAIL_IF_MISSING_EMBEDDED_PKG=0
    fi
    echo "New version available: $NEW_VERSION_STRING"
  else
    echo "Unable to get data from autoinstaller about new versions."
  fi
fi

# If there is a newer version, we check if it is newer than what we have embedded
# in this .pkg. If so, we run autoinstaller to start install of the new one.
if [ "$NEW_VERSION" != "" ]
then
  # Check to see if the new version is embedded in this .pkg
  EMBEDDED_INFO="${EMBEDDED_PKG}/Contents/Info"
  EMBEDDED_VERSION=$(defaults read "$EMBEDDED_INFO" CFBundleShortVersionString)
  if [ "$EMBEDDED_VERSION" != "$NEW_VERSION" ]
  then
    echo "Attempting to download and install version ${NEW_VERSION}."
    "$AUTOINSTALLER" --install -v
    if [ $? -eq 0 ]
    then
      echo "Successfully downloaded and installed updated version."
     INSTALL_EMBEDDED_PKG=0
    else
      echo "Failed to download and install new version."
    fi
  else 
    echo "Embedded version is current."
  fi
fi

# If we need to install the embedded package then see if it actually exists.
if [ $INSTALL_EMBEDDED_PKG -eq 1 ]
then
  if [ ! -d "$EMBEDDED_PKG" ]
  then
    echo "Missing embedded pkg: ${EMBEDDED_PKG}"
    INSTALL_EMBEDDED_PKG=0
    if [ $FAIL_IF_MISSING_EMBEDDED_PKG -eq 1 ]
    then
      echo "Failure due to missing embedded pkg: ${EMBEDDED_PKG}"
      exit 1
    fi
  fi
fi

# Maybe try to install our embedded MacFUSE Core.pkg.
if [ $INSTALL_EMBEDDED_PKG -eq 1 ]
then
  echo "Attempting to install embedded package: ${EMBEDDED_PKG}"
  INSTALLER_OUTPUT=$(installer -pkg "$EMBEDDED_PKG" -target "$INSTALL_VOLUME")
  INSTALLER_RC=$?
  echo "$INSTALLER_OUTPUT"  # So that we see it in our postflight log
  if [ $INSTALLER_RC -eq 0 ]
  then
    # Remove old autoinstaller bundle if it is still there.
    MACFUSE_SUPPORT="/Library/Filesystems/fusefs.fs/Support/"
    if [ $OS_MINOR -eq 4 ]
    then
      MACFUSE_SUPPORT="/System/${MACFUSE_SUPPORT}"
    fi
    MACFUSE_SUPPORT="${INSTALL_VOLUME}/${MACFUSE_SUPPORT}"
    if [ ! -d "$MACFUSE_SUPPORT" ]
    then
      echo "Unable to find Support directory: ${MACFUSE_SUPPORT}"
      exit 1
    fi

    # Remove the old autoinstaller bundle if necessary.
    rm -rf "${MACFUSE_SUPPORT}/MacFUSEAutoinstaller.bundle"

    # Copy the autoinstaller binary.
# DISABLED: The autoinstaller binary is now installed as part of the outer pkg.
#    cp "$AUTOINSTALLER" "${MACFUSE_SUPPORT}/${AUTOINSTALLER_NAME}"
#    if [ $? -ne 0 ]
#    then
#      echo "Unable to copy autoinstaller bundle to Support directory."
#      exit 1
#    fi
#    chown -R root:wheel "${MACFUSE_SUPPORT}/${AUTOINSTALLER_NAME}"
#    if [ $? -ne 0 ]
#    then
#      echo "Unable to chown macfuse autoinstaller."
#      exit 1
#    fi
  else
    # If the install failed due to an existing newer version then it is OK.
    # TODO: This grep is sort of lame and dependent on installer (and lang?)
    echo "$INSTALLER_OUTPUT" | \
          grep "newer version of this software already exists" > /dev/null
    if [ $? -eq 0 ]
    then
      echo "Embedded package was older than what is already installed (status OK)."
    else
      echo "Failed to install $EMBEDDED_PKG"
      exit 1
    fi
  fi
fi

# Make Spotlight aware of debug symbols for libfuse and the Objective-C framework.
# We do this for the user that is logged in at the console.
sudo -u `stat -f %Su /dev/console` mdimport /Library/Frameworks/MacFUSE.framework/Resources/Debug/

# Remove our receipt; MacFUSE.pkg doesn't have a payload.
rm -rf "$FINAL_RECEIPT"

## Signal success
exit 0