#!/bin/sh

# File        :  preinstall
#
# Purpose     :  execute all tasks necessary prior to installation of 
#                Privoxy's files
#
# Copyright   :  Written by and Copyright (C) 2001-2013 the
#                Privoxy team. http://www.privoxy.org/
#
#                This program 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 program 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.
#
#                The GNU General Public License should be included with
#                this file.  If not, you can view it at
#                http://www.gnu.org/copyleft/gpl.html
#                or write to the Free Software Foundation, Inc.,
#                51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
#                USA
#
# Modification : If you modify this file please consider whether your 
#                changes ought to be passed back to the iOSPackageBuilder
#                module.
#

#  This preinstall script:
#  1. Shuts down Privoxy if it's running
#  2. Backs up any existing log & configuration files

# create installation log file
logfile='/var/privoxy_installation.log'
echo 'Privoxy installation on' `/bin/date` > ${logfile}

# 1. Stop the Privoxy service if it's running
#
echo 'Stopping Privoxy via LaunchDaemon.' >> ${logfile}
/bin/launchctl unload /Library/LaunchDaemons/org.ijbswa.privoxy.plist >> ${logfile} 2>&1

# 2. Back up any existing log & configuration files
#
if [ -f /var/log/privoxy/logfile.log ]; then
	echo 'Backing up existing logfile' >> ${logfile}
  /bin/cp /var/log/privoxy/logfile.log /var/log/privoxy/logfile.old >> ${logfile} 2>&1
	/usr/sbin/chown privoxy:privoxy /var/log/privoxy/logfile.old >> ${logfile} 2>&1
fi
if [ -d /usr/local/etc/privoxy ]; then
	for i in config match-all.action trust user.action user.filter; do
		echo 'Backing up existing config file:' ${i} >> ${logfile}
		if [ -f /usr/local/etc/privoxy/$i ]; then
			/bin/cp /usr/local/etc/privoxy/$i /usr/local/etc/privoxy/$i.old >> ${logfile} 2>&1
			/usr/sbin/chown privoxy:privoxy /usr/local/etc/privoxy/$i.old >> ${logfile} 2>&1
		fi
	done
	echo 'Backing up existing config templates' >> ${logfile}
	/bin/cp -R /usr/local/etc/privoxy/templates /usr/local/etc/privoxy/templates.old >> ${logfile} 2>&1
	/usr/sbin/chown -R privoxy:privoxy /usr/local/etc/privoxy/templates.old >> ${logfile} 2>&1
fi

exit 0