#!/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 set up a repository for restricted access ie enables it for
# CVSPermissions


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

chkreturnandexit ()
{
	if [ $1 -ne 0 ];then
		echo $2
		cleanup
		exit 1;
	fi
}

echo checking out CVSROOT module for the repository.

cvs co CVSROOT >/dev/null 2>/dev/null

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

cd CVSROOT

#Check to see if SystemAuth is enabled.  We cannot work without system auth being enabled.

grep '^ *SystemAuth *= *yes' config >/dev/null 2>&1
if [ $? -eq 1 ];then
	echo "This installation does not use System Authentication (probably uses CVSROOT/password).   CVSPermissions cannot be used with this intallation"
	exit 1;
fi

#If there is a path specified on the command line assume that CVSPermissions
#has been installed in that path. Else assume that the directory in which
#this program started has the file path

if [ -z $1 ];then
	FILEPATH=`dirname $0`
else
	FILEPATH=$1
fi

grep "cvspermissions.sh\$" commitinfo >/dev/null 2>&1
if [ $? -eq 1 ];then
	echo Modifying CVSROOT/commitinfo file to enable CVSPermissions
	echo "DEFAULT $FILEPATH/cvspermissions.sh" >> commitinfo 
fi

grep "cvspermtagcheck.sh\$" taginfo >/dev/null 2>&1
if [ $? -eq 1 ];then
	echo Modifying CVSROOT/taginfo file to enable CVSPermissions
	echo "DEFAULT $FILEPATH/cvspermtagcheck.sh" >> taginfo
fi

#Add users.restricted if required.

if [ ! -f users.restricted ];then
	echo "Adding users.restricted"
	#Add the users.restricted file
	touch users.restricted
	cvs add users.restricted >/dev/null 2>/dev/null
	chkreturnandexit $? "Could not create CVSPermission file. Exiting"

	#add our file to the checkout list
	grep -v "^users\.restricted\$" checkoutlist > checkoutlist.new
	echo users.restricted >> checkoutlist.new
	mv checkoutlist.new checkoutlist
fi

#Add a CVS writers file if not present
if [ ! -f writers ];then
	echo "Creating repository writers"
	#Add self to writers - otherwise the next CVS command will fail since we
	#wont have write permission to the repository (CVSROOT)
	echo $USER > writers
	cvs add writers >/dev/null 2>/dev/null
	chkreturnandexit $? "Could not create a writers file. Exiting"
fi


#Add a CVS readers file if not present
if [ ! -f readers ];then
	echo "Creating repository readers"
	touch readers 
	cvs add readers >/dev/null 2>/dev/null
	chkreturnandexit $? "Could not create a readers file. Exiting"
fi


cd ..

echo "Committing CVSPermission configuration to the CVSROOT module"

cvs commit -m "Enabled CVSPermissions for the repository" CVSROOT >/dev/null 2>/dev/null

chkreturnandexit $? "Could not commit configuration files. Exiting"
cleanup

echo CVSPermissions setup successfully completed.
exit 0