#!/bin/bash 
#
#  Copyright (C) 2002 Vivek Venugopalan.  All Rights Reserved.
#
#  This is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This software is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this software; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
#  USA.
#

# This script disables a restricted user to the CVSPermissions database.

cleanup ()
{
	if [ -d CVSROOT ];then
		rm -rf CVSROOT
	fi
	rm -f users.list
}


printusage () 
{
	echo "Usage : $0 [ -d | -e ] <`uname -s` user name(s)>"
}

if [ $# -lt 2 ];then
	printusage;
	exit 1;
fi 

echo checking out CVSROOT module for the repository.

cvs co CVSROOT >/dev/null

if [ $? -eq 1 ];then
	echo Could not access the CVSROOT module.  Exiting!
	exit 1;
fi
FILETOADD=
FILETODEL=

case "$1" in
	--enable | -e)
		FILETOADD="writers";
		FILETODEL="readers";
		break;;

	--disable | -d)
		FILETOADD="readers";
		FILETODEL="writers";
		break;;
	
	--help | -? | -h | --h*)
		printusage;
		cleanup;
		exit 1;;
esac

shift

#Get all the names in a file
while $# -ne 0 ;do
	echo $1 >> users.list
done


#Remove from $FILETODEL file and add to $FILETOADD file
grep -vf  users.list CVSROOT/$FILETODEL > CVSROOT/$FILETODEL.new
mv CVSROOT/$FILETODEL.new CVSROOT/$FILETODEL

#Clean up $FILETOADD during the process.
grep -vf  users.list CVSROOT/$FILETOADD > CVSROOT/$FILETOADD.new
mv CVSROOT/$FILETOADD CVSROOT/$FILETOADD

#Add to readers
cat users.list >> CVSROOT/$FILETOADD

echo "Commiting to the repository..."

cvs commit -m "Disabled users" CVSROOT >/dev/null 2>&1

if [ $? -ne 0 ];then
	echo Commit to the repository failed.  Please try after sometime.
fi

cleanup

exit 0