slimserver

#!/bin/sh

# By paul_123 Jan 21, 2016
#
# Cache and Prefs must be on a persistent device.
#
# Username and group is tc/staff by default.  You can create a new userid
# CFG_FILE is can be created to change default directories.
#       File is an executable script that must define.

CFG_FILE="/home/tc/.slimserver.cfg"
TCEDIR=$(readlink "/etc/sysconfig/tcedir")

if [ -f "$CFG_FILE" ]; then
	. $CFG_FILE
fi

#Set Default Settings if not defined in CFG_FILE
[ -n "$CACHE" ] || CACHE=$TCEDIR/slimserver/Cache
[ -n "$LOGS" ] || LOGS=/var/log/slimserver
[ -n "$PREFS" ] || PREFS=$TCEDIR/slimserver/prefs
[ -n "$LMSUSER" ] || LMSUSER=tc
[ -n "$LMSGROUP" ] || LMSGROUP=staff
[ -n "$TMPDIR" ] || TMPDIR=/tmp/slimupdate
[ -n "$OPTIONS" ] || OPTIONS=""

#Must Run as Root for ownership
if [ `/usr/bin/id -u` -ne 0 ]; then
	echo "Need to run as root." >&2
	exit 1
fi

check_status(){
	PID=$(pidof slimserver.pl)
	if [ -n "$PID" ]; then
		echo "Slimserver Running pid:${PID}"
		exit 0
	else
		echo "Slimserver is not Running"
		exit 1
	fi
}

setusergroup(){
	#If username or group is not existant on system, create a group and userid
	TEST=$(/bin/grep $LMSGROUP /etc/group)
	if [ -z TEST ]; then
		/usr/sbin/addgroup $LMSGROUP
	fi
	TEST=$(/bin/grep $LMSUSER /etc/passwd)
	if [ -z TEST ]; then
		/usr/sbin/adduser -s /bin/false -h /nonexistent -G $LMSGROUP -D $LMSUSER
	fi
}

set_dirs(){
	# Make sure data directories exist and have correct ownership
	[ -d $CACHE ] || mkdir -p $CACHE
	[ -d $PREFS/plugin ] || mkdir -p $PREFS/plugin
	[ -d $LOGS ] || mkdir -p $LOGS
	[ -d $TMPDIR ] || mkdir -p $TMPDIR

	# touch and set permissions of directories, otherwise logs will get created as root permissions by slimserver.pl
	[ -e $LOGS/server.log ] || touch $LOGS/server.log
	[ -e $LOGS/scanner.log ] || touch $LOGS/scanner.log
	[ -e $LOGS/perfmon.log ] || touch $LOGS/perfmon.log

	#This needs to be done incase user changes the username group configuration
	chown -R $LMSUSER.$LMSGROUP $LOGS
	chown -R $LMSUSER.$LMSGROUP $CACHE
	chown -R $LMSUSER.$LMSGROUP $PREFS
	chown -R $LMSUSER.$LMSGROUP $TMPDIR
}

case "${1}" in

	start)

		#Set LMS to run as user other than root
		setusergroup
		#Setup Data and Log Directories
		set_dirs

		##command line options to set cache path is not working, must create symlinks
		[ -d /usr/local/slimserver/Cache ] || ln -s $CACHE /usr/local/slimserver/Cache
		[ -d /usr/local/slimserver/Logs ] || ln -s $LOGS /usr/local/slimserver/Logs
		[ -d /usr/local/slimserver/prefs ] || ln -s $PREFS /usr/local/slimserver/prefs

		#  tce-load sets ownership to root.root, need to make sure lms and the symlinks are all user writable
		chown -R $LMSUSER.$LMSGROUP /usr/local/slimserver

		# Wait until network is up and running, or it will cause server startup problems
		CNT=0
		until ifconfig | grep -q Bcast
		do
			[ $((CNT++)) -gt 60 ] && break || sleep 1
		done

		#Start LMS Server as Daemon, with proper user
		if [ $CNT -lt 60 ]; then
			/usr/local/slimserver/slimserver.pl --daemon --user $LMSUSER --group $LMSGROUP $OPTIONS
			echo
			check_status
		else
			echo "No Network Interface is UP.....exiting"
			exit 1
		fi
		;;

	stop)
		PID=$(pidof slimserver.pl)
		if [ -n "$PID" ]; then
			kill -3 $PID
			# slimserver catches signal and exits gracefully.....wait for slimserver to actually stop
			CNT=0
			while [ $CNT -lt 100 ]
			do
				[ $((CNT++)) ]
				PID=$(pidof slimserver.pl)
				[ -z "$PID" ] && break
				sleep .1
			done
			if [ $CNT -ge 100 ]; then
				echo "Slimserver did not stop within a reasonable time"
				exit 1
			fi
			echo "Slimserver Stopped"
			exit 0
		else
			echo "Slimserver PID not found, Server already stopped"
			exit 0
		fi
		;;

	status)
		check_status
		;;

	*) echo "Usage $0 {start|stop|status}"; exit 1
esac