#! /bin/sh
# logclean.sh - maintenance script for logfiles generated by CommModule
#               run this daily or weekly from cron

COMPRESS="xz -9 -M 1GiB"	# compression program to use
COMPRESS_EXT=xz			# file extension for compression program

syslog_error()
{
	logger -i -t CommModule/logclean.sh -p user.err $1
}

syslog_notice()
{
	logger -i -t CommModule/logclean.sh -p user.notice $1
}

# determine location of CommModule
if [ -d /home/cacert/www/CommModule ]
then	# webdb server
	cd /home/cacert/www/CommModule
elif [ -d /root/CommModule ]
then	# signing server
	cd /root/CommModule
else
	echo "$0: cannot find CommModule directory" 1>&2
	syslog_error "cannot find CommModule directory"
	exit 1
fi

# compress logfiles which have not been modified in at least 48 hours
FILES=`find logfile20*.txt -mtime +1 -print`
if [ -n "${FILES}" ]
then
	for F in ${FILES}
	do
		syslog_notice "Compressing ${F}" && ${COMPRESS} ${F}
	done
fi

# move compressed logfiles to oldlogs directory
FILES=`find logfile20*.txt.${COMPRESS_EXT} -print`
if [ -n "${FILES}" ]
then
	mkdir -p oldlogs
	for F in ${FILES}
	do
		syslog_notice "Moving ${F} to oldlogs" && mv ${F} oldlogs
	done
fi

# delete old logfiles which have not been modified in at least 2.5+ years
FILES=`find oldlogs/logfile20*.txt.${COMPRESS_EXT} -mtime +913 -print`
if [ -n "${FILES}" ]
then
	for F in ${FILES}
	do
		syslog_notice "Deleting ${F}" && rm -f ${F}
	done
fi