Automating Oracle Java 8 updates

To go along with my earlier post about automating Oracle Java 7 updates, I’ve also posted a script to download and install the latest Java 8 update from Oracle. The method is identical, with the exception of referring to Java 8’s SUFeedURL value in Java 8’s /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Info.plist file.

For more information, see below the jump.

The script below will download a disk image containing the latest version of Java 8 from Oracle and install Java 8 using the installer package stored inside the downloaded disk image.

How the script works:

1. Uses curl to download a disk image containing the latest Java 8 installer from Oracle’s web site.
2. Renames the downloaded disk image to java_eight.dmg and stores it in /tmp.
3. Mounts the disk image silently in /tmp. The mounted disk image will not be visible to any logged-in user.
4. Installs the latest Java 8 using the installer package stored on the disk image.
5. After installation, unmounts the disk image and removes it from the Mac in question.

	#!/bin/bash
	# This script downloads and installs the latest Oracle Java 8 for compatible Macs
	# Determine OS version
	osvers=$(sw_vers -productVersion | awk -F. '{print $2}')
	# Specify the "OracleUpdateXML" variable by adding the "SUFeedURL" value included in the
	# /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Info.plist file.
	#
	# Note: The "OracleUpdateXML" variable is currently specified in the script as that for
	# Java 8 Update 20, but the XML address embedded with Java 8 Update 20 is not special in
	# this regard. I have verified that using the address for Java 8 Update 5 will also work
	# to pull the address of the latest Oracle Java 8 installer disk image. To get the "SUFeedURL"
	# value embedded with your currently installed version of Java 8 on Mac OS X, please run
	# the following command in Terminal:
	#
	# defaults read "/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Info" SUFeedURL
	#
	# As of Java 8 Update 20, that produces the following return:
	#
	# https://javadl-esd-secure.oracle.com/update/mac/au-1.8.0_20.xml
	#
	OracleUpdateXML="https://javadl-esd-secure.oracle.com/update/mac/au-1.8.0_20.xml"
	# Use the XML address defined in the OracleUpdateXML variable to query Oracle via curl
	# for the complete address of the latest Oracle Java 8 installer disk image.
	fileURL=`/usr/bin/curl –silent $OracleUpdateXML | awk -F \" /enclosure/'{print $(NF-1)}'`
	# Specify name of downloaded disk image
	java_eight_dmg="$3/tmp/java_eight.dmg"
	if [[ ${osvers} -lt 7 ]]; then
	echo "Oracle Java 8 is not available for Mac OS X 10.6.8 or earlier."
	fi
	if [[ ${osvers} -ge 7 ]]; then
	# Download the latest Oracle Java 8 software disk image
	# The curl -L option is needed because there is a redirect
	# that the requested page has moved to a different location.
	/usr/bin/curl –retry 3 -Lo "$java_eight_dmg" "$fileURL"
	# Specify a /tmp/java_eight.XXXX mountpoint for the disk image
	TMPMOUNT=`/usr/bin/mktemp -d "$3"/tmp/java_eight.XXXX`
	# Mount the latest Oracle Java 8 disk image to /tmp/java_eight.XXXX mountpoint
	hdiutil attach "$java_eight_dmg" -mountpoint "$TMPMOUNT" -nobrowse -noverify -noautoopen
	# Install Oracle Java 8 from the installer package. This installer may
	# be stored inside an install application on the disk image, or there
	# may be an installer package available at the root of the mounted disk
	# image.
	if [[ -e "$(/usr/bin/find $TMPMOUNT -maxdepth 1 \( -iname \*\.app \))/Contents/Resources/JavaAppletPlugin.pkg" ]]; then
	/usr/sbin/installer -dumplog -verbose -pkg "$(/usr/bin/find $TMPMOUNT -maxdepth 1 \( -iname \*\.app \))/Contents/Resources/JavaAppletPlugin.pkg" -target "$3"
	fi
	if [[ -e "$(/usr/bin/find $TMPMOUNT -maxdepth 1 \( -iname \*\.pkg -o -iname \*\.mpkg \))" ]]; then
	/usr/sbin/installer -dumplog -verbose -pkg "$(/usr/bin/find $TMPMOUNT -maxdepth 1 \( -iname \*\.pkg -o -iname \*\.mpkg \))" -target "$3"
	fi
	# Clean-up
	# Unmount the Oracle Java 8 disk image from /tmp/java_eight.XXXX
	/usr/bin/hdiutil detach -force "$TMPMOUNT"
	# Remove the /tmp/java_eight.XXXX mountpoint
	/bin/rm -rf "$TMPMOUNT"
	# Remove the downloaded disk image
	/bin/rm -rf "$java_eight_dmg"
	fi
	exit 0

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gistfile1.sh

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I’ve posted the script to my GitHub repo at the following address:

https://github.com/rtrouton/rtrouton_scripts/tree/master/rtrouton_scripts/install_latest_oracle_java_8

This script is also available as a payload-free installer package, stored as a .zip file in the payload_free_installer directory.