#!/bin/bash
echo "SET_SERVICES:OPENMOSIX Version 07202k3-e"
echo "This one has no command-line arguments.  Sorry, folks!"

# This reads in a master services settings file and then compares it 
# with the services settings on the current system.
# It creates a 'diff' file of the differences.
# Then it offers reset the services on the current settings to match"
# the master services settings file using the diff file.

function COMPARE {
# This finds the differences between the original services setting and a
# master 'desired' services settings file.  It then generates a 'diff'
# file containing a listing of the services to be turned off to match the
# master file.
diff original_services openmosix_services | grep "<" | awk ' { print $2" "$5" "$6" "$7" "$8 }' > diff_services
}



function CHANGE {
# This function reads through the diff file and offers to turn off the 
# services listed therein for run-levels 2 through 5.
# Note: Most distros use levels 3 and 5, but Debian uses 2, and some others
# use run-level 4 (I think Gentoo does.)

# Find each line containg a service name one at a time.
for i in `cat diff_services | awk ' { print $1 } '`; do
	echo "Do you wish to TURN_OFF $i?"
	#Give the service's present setting."
	echo "$i is now set as follows:"
	chkconfig --list $i
	read DUMMY
	case $DUMMY in 
		Y|y|Yes|YES|yes)
		# If yes, turn off the service in runlevels 2 through 5.
		for j in 2 3 4 5; do
			cat diff_services | grep $i | grep "{$j}:on"
			if [ $? -ne 0 ]; then
				chkconfig --level $j $i off
			fi
		done
		;;
		*)
			# If the user didn't say yes, don't do anything for 
			# this service.  Go on to the next one.
			echo "No change was made for service $i."
		;;
	esac
	# Show the service (reset or not.)
	echo "$i is now set as follows:"
	chkconfig --list $i	
# That's all, folks!
done
}




#ACTUAL PROGRAMME CODE.
# This program only runs from /root/bin, not /usr/bin like the rest of the
# Kludge Kollection.

# Change to /root/bin.

cd /root/bin

# If the openmosix_services master file is missing, report it, tell how
# to get the file, and then exit with an errorlevel of 1.

if ! [ -f openmosix_services ]; then
	echo "Hey!"
	echo "You need the openmosix_services master file first."
	echo "Please go make one by doing "
	echo " "
	echo "chkconfig --list >openmosix_services" 
	echo " "
	echo "on an openmosix host with properly configured services"
	echo "and then copy the file to /root/bin/openmosix_services"
	echo "on this host.  Then re-run this program."
	exit 1
fi

# Generate the file containing original service settings for this host.
# This file will be compared with the 'master' file containing the desired
# settings, namely 'openmosix_services'.
chkconfig --list >original_services

# Generate the diff file.
COMPARE
# Show me the diff file.
echo "Diff file created and stored in diff_services."
cat diff_services
# Last chance to make sure we want to proceed.
echo "Proceed?"
read DUMMY
case "$DUMMY" in
	y|Y)
	# Make the changes with the CHANGE function (above).
	CHANGE
	;;
	*)
		# Don't change ANY services.  Abort the whole thing.
		echo "No services were changed."
	;;
esac
# All done.  Wasn't that fun?
exit 0