#!/bin/bash

# This script is edited by Brice Dutheil
# See there in french http://blog.arkey.fr/2011/08/22/script-pour-installer-le-jdk-5-sur-macosx-lion/
# Translate button is broken for now, please use Google to translate this website.
#
# 2O12/07/29 Added Mountain Lion support => Choose the 64bit JVM !
#            Can dowload the Java DMG itself if not present in same directory
#            Colored the output a bit, works well on a black background
#            Added tips for using the different JVMs
#            Removed 32bit mode for Mountain Lion (Thanks to Henri Gomez for pointing me to 'ditto')
#
# 2011/12/04 Added warnings and some more information on gotchas
#
# 2011/08/25 Updated this very comments
#
# 2011/08/22 Initial version (Thanks to Benjamin Morin for his blog post)
#            This script heavily inspired/copied from http://www.s-seven.net/java_15_lion






#some variables
javadmgurl='http://support.apple.com/downloads/DL1359/en_US/JavaForMacOSX10.5Update10.dmg'
javapkg='JavaForMacOSX10.5Update10'
jvmver='1.5.0_30'
jvms_path='/System/Library/Java/JavaVirtualMachines'
java_frmwk_path='/System/Library/Frameworks/JavaVM.framework/Versions'
pushd `dirname $0` > /dev/null
script_location=`pwd -P`
popd > /dev/null

# 12.0.0 = Mountain Lion = 10.8
# 11.0.0 = Lion = 10.7
darwin_version=`uname -r`
osx_version=`sw_vers -productVersion`
test $darwin_version == '12.0.0' && is_mountain_lion=true


# colors and style
RESET='\033[00m'
RED='\033[00;31m'
BLUE='\033[0;34m'
PURPLE='\033[0;35m'
LIGHT_PURPLE='\033[1;35m'
BROWN='\033[0;33m'
YELLOW='\033[1;33m'
UNDERLINED='\033[4m'

# escape aware echo
echo() { builtin echo -e $@; }



# Make sure only root can run the script
if [ $EUID -ne 0 ]; then
   echo $RED'This script must be run as root!'$RESET 1>&2
   exit 1
fi




# Make sure the user understand he is all alone if something goes wrong
if [ $is_mountain_lion ]; then
    echo $YELLOW'=> You are using Mountain Lion, the script has been updated to work, however 
Mountain Lion kernel works in 64bit. This shouldn'"'"'t be an issue, as the JDK 6 32bit is working,
however it actually doesn'"'"'t work for this hacky install of JDK 5. '$RED'It means that only 
the 64bit version will work on your OS.'$RESET
    echo
fi
echo '=> The present script has been tested on my current setup and is far from 
bulletproof, it might not work at all on your system. And there is '$RED'*no 
uninstall script*'$RESET' for now!'
echo 
echo '=> Again '$RED'this script touches system files'$RESET', please be advised you are the sole
responsible to run or TO NOT run this script on your machine.'
echo

# Reminder about Apple JDK updates
echo $YELLOW$UNDERLINED'NOTES :'$RESET
echo $BROWN'=> It seems that when applying a Java update from Apple, some important 
symbolic names that refer to this install are resetted to factory default 
values, you can just re-apply this script.'$RESET
echo
echo $BROWN'=> For people that where upgrading OS X, it seems this scripts fail to open 
Java Preferences at the end of the script, with an error like that:'
echo $PURPLE'\tLSOpenURLsWithRole() failed with error -10810 for the application /Applications/Utilities/Java Preferences.app.'
echo
echo $BROWN'If this is happening, '$RED'you have to (re)install Java 6 !'
echo $BROWN'You can enter these commands yourself in root mode :'
echo $BROWN'\tsudo rm -rf /System/Library/Java/JavaVirtualMachines/1.6.0.jdk'
echo '\tsudo rm -rf /System/Library/Java/JavaVirtualMachines'
echo '\tjava'
echo $BROWN'This last command will trigger the Java 6 install, then you can run again this script.'$RESET
echo

echo -n 'Do you still want to proceed ? (y/n) '
read answer
[ $answer != 'y' ] && echo 'JDK5 Lion / Mountain Lion Install script aborted' && exit 1
echo



echo
echo $UNDERLINED'Here we go'$RESET
# ================================
echo

if [ ! -f $javapkg.dmg ]; then
    echo 'The "Java for Mac OS X 10.5 Update 10" DMG ('"$javapkg.dmg"') was not found.'
    echo 'Now trying to download the DMG file from Apple website (http://support.apple.com/kb/DL1359).'
    echo $javadmgurl' -> '$script_location/$javapkg.dmg
    echo -n $BLUE
    curl -C - -# -L $javadmgurl -o $script_location/$javapkg.dmg
    echo -n $RESET

    if [ ! -f $script_location/$javapkg.dmg ]; then
        echo 'Couldn'"'"'t download the uptate. Please download it from Apple at : 
http://support.apple.com/kb/DL1359'
        echo 'And place it in the same folder as this script : '$script_location
        exit 1
    fi
else
    echo 'Using '$javapkg'.dmg file as the "Java for Mac OS X 10.5 Update 10".'
fi





# Extracting the DMG content in temporary location
echo
echo 'Extracting Java for Mac OS X package'
mkdir /tmp/jdk5dmg
hdiutil attach -quiet -nobrowse -mountpoint /tmp/jdk5dmg/ $script_location/$javapkg.dmg
cd /tmp/jdk5dmg/
# too bad pkgutil nor xar cannot stream package content
pkgutil --expand $javapkg.pkg /tmp/jdk5pkg

cd ..
hdiutil detach -quiet -force /tmp/jdk5dmg/
rm -rf /tmp/jdk5dmg/




# Prepare the System JVM path
if [ ! -e $jvms_path ]; then
    echo 'Create '$jvms_path', as it does not exist on your system (it might be because 
you don'"'"' t have another Java install)'
    mkdir -v -p $jvms_path
fi

echo
echo 'Removing previous Java 1.5 file / directory or symbolic links in :'
cd $jvms_path
pwd
rm -rf 1.5
rm -rf 1.5.0
cd $java_frmwk_path
pwd
rm 1.5/ > /dev/null 2>&1 || rm -rf 1.5 > /dev/null 2>&1
rm 1.5.0/ > /dev/null 2>&1 || rm -rf 1.5.0 > /dev/null 2>&1
rm -rf $jvmver 2>&1




echo
echo $UNDERLINED'Preparing JavaVM framework'$RESET
# ================================================
echo

echo 'Extracting JDK 1.5.0 from package payload in :'
cd $java_frmwk_path
pwd
gzip -cd /tmp/jdk5pkg/$javapkg.pkg/Payload | pax -r -s \
		',.'$java_frmwk_path'/1.5.0,./'$jvmver','      \
		'.'$java_frmwk_path'/1.5.0'
ls -Fld 1.5*

rm -rf /tmp/jdk5pkg/

echo
echo 'Recreating symbolic links to ./'"$jvmver"' for 1.5 and 1.5.0 :'
pwd
ln -svhF ./$jvmver 1.5
ln -svhF ./$jvmver 1.5.0

echo
echo 'Changing values in config files to make JDK work with Lion / Mountain Lion'
cd $jvmver
/usr/libexec/PlistBuddy -c "Set :JavaVM:JVMMaximumFrameworkVersion 14.*.*" ./Resources/Info.plist
/usr/libexec/PlistBuddy -c "Set :JavaVM:JVMMaximumSystemVersion "$osx_version".*" ./Resources/Info.plist
/usr/libexec/PlistBuddy -c "Add :CFBundleExecutable string libjava.jnilib" ./Resources/Info.plist
ln -siv ./Resources/Info.plist .

echo
echo 'Linking Apple native wrapper'
mkdir ./MacOS
ln -siv ../Libraries/libjava.jnilib ./MacOS




echo
echo $UNDERLINED'Preparing Java Virtual Machine'$RESET
# ====================================================
cd $jvms_path
mkdir -v 1.5.0
cd 1.5.0
pwd
ln -sivh $java_frmwk_path/$jvmver ./Contents


if [ $is_mountain_lion ]; then
    echo
    echo $YELLOW'REMINDER : You are using Mountain Lion which is running a 64 bit kernel, this causes segfaults
when the Java 5 JVM is run in 32 bit mode. For this reason this script removes 32bit mode on this JVM.'$RESET

    ditto --arch x86_64 $java_frmwk_path/$jvmver $java_frmwk_path/$jvmver-x64
    rm -rf $java_frmwk_path/$jvmver
    mv $java_frmwk_path/$jvmver-x64 $java_frmwk_path/$jvmver
fi




echo
echo $UNDERLINED'Almost over...'$RESET
# ====================================
echo

echo $BROWN'TIP : If you are using applications that need Java 6, but some other command line apps that require JDK 5 :'
echo ' - keep the "Java SE 6" entry at the top in "Java Preferences"'
echo ' - use the Apple "/usr/libexec/java_home" tool, for example to choose the "J2SE 5.0 64-bit" version :'
echo $PURPLE'\texport JAVA_HOME=`/usr/libexec/java_home -F -v 1.5 -a x86_64 -d64`'$RESET
echo

echo -n 'Yeah I got it ! (Press Enter)'
read -s -n 0 key_press
echo

echo 'Now check that JDK 5 appears in Java Preference App, if yes the install is successful, otherwise 
try asking the internet :-/'
echo '(starting here : https://gist.github.com/1163008#comments)'
echo

open -a "/Applications/Utilities/Java Preferences.app"