Raspberry PI OpenELEC updater

rpi-openelecup.sh

#!/bin/bash

# Distributed under the terms of the BSD License.
# Copyright (c) 2012 Phil Cryer phil@philcryer.com
# Source https://gist.github.com/gists/3333039

# DESCRIPTION:
# This code updates OpenELEC on Raspberry PI to any available dev version you want 
# The script to install the latest version did install the latest, but then failed to run :(
# This script allowed me to try another version (a few days older), which worked :)

# USAGE:
# SSH into your OpenELEC instance
# cd /storage/.config
# wget https://raw.github.com/gist/3333039/rpi-openelecup.sh
# chmod a+x rpi-openelecup.sh
# ./rpi-openelecup.sh

# DISCLAIMER: 
# code based on http://pastebin.com/raw.php?i=v5592MFq
# linked to from this OpenELEC forum post:
# http://openelec.tv/forum/133-installation/42383-update-script-for-openelec-on-raspberry-pi#43081
# while this worked for me, ask your doctor if rpi-openelecup.sh is right for you

# location of builds (note, this changes from time to time)
#url="http://sources.openelec.tv/tmp/image/openelec-rpi/"
# 20130131 files have moved, the devel versions are under a new URL (h/t alek)
#url="http://openelec.thestateofme.com/"
# 20130505 files have been moved to a subdirectory, adding /dev_builds/ to the $url
url="http://openelec.thestateofme.com/dev_builds/"

# list currently installed revision
#short
#this_revision=`cat /etc/version | sed 's/.*\(r[0-9]*\)/\1/'`
#full
this_revision=`cat /etc/version`


banner()
{
	# everybody loves banners!
	clear
	echo "##############################################"
	echo "# OpenELEC - The living room PC for everyone #"
	echo "# ...... visit http://www.openelec.tv ...... #"
	echo "##############################################"
	echo; echo -n "Current Version:	$this_revision"
}


latest()
{
	# figure out latest available version
	last_base=`curl -s $url | grep .tar.bz2 | sed 's/.*\(OpenELEC.*\).tar.bz2.*/\1/' | sort | tail -1`
#	last_revision=`echo $last_base | sed 's/.*\(r[0-9]*\)/\1/'`
#	last_revision=`echo $last_base`
	last_revision=`echo $last_base | cut -d"-" -f3,4,5`
	#new_filename=$last_base.tar.bz2
	echo; echo "Latest Version:		$last_revision"
}


runninglatest(){
	# check if currently installed revision is up-to-date
	if [ $this_revision == $last_revision ]
	then
    		echo; echo "System is running the latest version."
	else
    		echo; echo "System is not running the latest."
	fi
}


available(){
	# report on available versions
	echo; echo "Available versions:"
	curl -s $url | grep "<li>" | grep -v upload | grep -v tmp | cut -d"\"" -f2 
}


question(){
	# ask which version to install
#	echo; echo -n "Latest or version? (L) or (devel-2012xxxxxxxxxx-rxxxxx) : "
	echo; echo -n "Version to install? (ie- devel-2012xxxxxxxxxx-rxxxxx) : "
	read install_version
	get_filename=$install_version.tar.bz2
	if [ "$install_version" == "L" ]; then
		echo; echo "Will install $last_revision"
	else
		echo; echo -n "Will install $install_version, OK? (y/n) : "
		read yn
		if [ "$yn" == "y" ]; then
			echo
		else
			echo "Not installing."; exit 0
		fi
	fi
}


getit()
{
	# change working directory 
	cd /storage
 
	# get base, revision and filename of last build 
	new_filename=OpenELEC-RPi.arm-$install_version.tar.bz2
	new_dirname=`echo $new_filename | cut -d"." -f1,2`
	
	# folder name is set equal to base
	oldername=$last_base

	# download corresponding file to working directory
	urltolast=$url/$new_filename
	#echo "wget $urltolast"
	wget $urltolast
 
 	echo -e  "Download complete\n"
}


unpack(){
	# uncompressing the tarball
	echo "Uncompressing tarball, files extracted:"
	tar -xvjf $new_filename

	# check if .update folder exists, otherwise create it
	if [ ! -d /storage/.update ]; then
    		mkdir /storage/.update
	fi

	# move OpenELEC files (including .md5 files) to update folder
#	mv $foldername/target/* /storage/.update/
	mv $new_dirname/target/* /storage/.update/
	echo -e "\nOpenELEC files succesfully moved to update directory"
	
}

cleanup(){
	# clean up
	rm -r $new_dirname
	rm $new_filename
	echo "Temporary files deleted"
}


syncup(){
	# sync and reboot system to apply updates
	echo -n "Install complete, press any key to reboot : "
	read any
	echo; echo "System rebooting and updating"
	sleep 5s
	sync
	reboot
}


# let's rock it
banner
latest
runninglatest
available
question
getit
unpack
cleanup
syncup


exit 0