#!/bin/sh
# description: Control ZoneMinder as a Service
# chkconfig: 2345 99 00

# Source function library.
. /etc/rc.d/init.d/functions

prog=ZoneMinder
ZM_VERSION="@VERSION@"
ZM_PATH_BIN="@BINDIR@"
ZM_CONFIG="@SYSCONFDIR@/zm.conf"
command="$ZM_PATH_BIN/zmpkg.pl"

loadconf()
{
	if [ -f $ZM_CONFIG ]; then
		. $ZM_CONFIG
	else
		echo "ERROR: $ZM_CONFIG not found."
		return 1
	fi
}

# Check for old config and update if needed
checkcfg()
{
	# Check config
	if [ "$ZM_DB_HOST" = "" -o "$ZM_DB_NAME" = "" -o "$ZM_DB_USER" = "" -o "$ZM_DB_PASS" = "" ]; then
		if [ "$ZM_DB_SERVER" != "" -a "$ZM_DB_NAME" != "" -a "$ZM_DB_USERA" != "" -a "$ZM_DB_PASSA" != "" ]; then
			echo -n "Converting $ZM_CONFIG"
			cp $ZM_CONFIG $ZM_CONFIG.old && \
			cat $ZM_CONFIG.old | \
				grep -v ZM_DB_USERB | \
				grep -v ZM_DB_PASSB | \
				sed -e 's/ZM_DB_USERA/ZM_DB_USER/' | \
				sed -e 's/ZM_DB_PASSA/ZM_DB_PASS/' >$ZM_CONFIG && \
			rm -f $ZM_CONFIG.old
			RETVAL=$?
			[ $RETVAL = 0 ] && echo_success
			[ $RETVAL != 0 ] && echo_failure
			echo
		fi
		if [ "$ZM_DB_SERVER" != "" -a "$ZM_DB_NAME" != "" -a "$ZM_DB_USER" != "" -a "$ZM_DB_PASS" != "" ]; then
			echo -n "Converting $ZM_CONFIG to 1.22.0"
			cp $ZM_CONFIG $ZM_CONFIG.old
			rm -f $ZM_CONFIG
			cat $ZM_CONFIG.old | \
			sed -e 's/ZM_DB_SERVER/ZM_DB_HOST/' >/tmp/$$
			. /tmp/$$
			cp $ZM_CONFIG.rpmnew $ZM_CONFIG && chmod 644 $ZM_CONFIG
			for n in ZM_DB_HOST ZM_DB_NAME ZM_DB_USER ZM_DB_PASS; do
				eval "val=\$$n"
				if [ "$val" != "" ]; then
				cp $ZM_CONFIG /tmp/$$.rpmnew &&
				sed 's/^'$n='.*$/'$n=$val'/g' /tmp/$$.rpmnew >$ZM_CONFIG
				fi
			done
			rm /tmp/$$ 
			RETVAL=$?
			[ $RETVAL = 0 ] && echo_success
			[ $RETVAL != 0 ] && echo_failure
			echo
		else
			echo "In $ZM_CONFIG there should not be null values."
			return 1
		fi
	loadconf
	fi
}

checkdb()
{
	# Check database exisits and version
	GetVer="select Value from Config where Name='ZM_DYN_DB_VERSION'"
	OLD_VERSION=`echo $GetVer | mysql -B -h $ZM_DB_HOST -u $ZM_DB_USER -p$ZM_DB_PASS $ZM_DB_NAME | grep -v '^Value'`
	if [ "$OLD_VERSION" = "" ]; then
		GetVer="select Value from Config where Name='ZM_DYN_CURR_VERSION'"
		OLD_VERSION=`echo $GetVer | mysql -B -h $ZM_DB_HOST -u $ZM_DB_USER -p$ZM_DB_PASS $ZM_DB_NAME | grep -v '^Value'`
		if [ "$OLD_VERSION" = "" ]; then
			echo -n "You must run zmupdate.pl manualy"
			return 1
		fi	
	fi
	RETVAL=$?
	
	if [ $RETVAL != 0 ]; then
		tbls=`mysql -h $ZM_DB_HOST -u $ZM_DB_USER -p$ZM_DB_PASS -s -e 'show tables' $ZM_DB_NAME`
		RETVAL=$?
		if [ $RETVAL = 0 ]; then
			echo -n "Initialize $prog database: "
			echo tbls | grep Config >/dev/null 2>&1
			RETVAL=$?
			if [ $RETVAL != 0 ]; then
				mysql -B -h $ZM_DB_HOST -u $ZM_DB_USER -p$ZM_DB_PASS $ZM_DB_NAME < $ZM_PATH_UPDATE/zm_create.sql 
				RETVAL=$?
				[ $RETVAL = 0 ] && echo_success
				[ $RETVAL != 0 ] && echo_failure
				echo
				return $RETVAL
			fi
			( cd $ZM_PATH_UPDATE; perl $ZM_PATH_BIN/zmupdate.pl -f )
			RETVAL=$?
			[ $RETVAL = 0 ] && echo_success
			[ $RETVAL != 0 ] && echo_failure
			echo
			return $RETVAL
		else
			echo "No access to ZoneMinder database. Run $ZM_PATH_BIN/zminit manually."
			return $RETVAL
		fi
	else
		[ "$ZM_VERSION" = "$OLD_VERSION" ] && return 0
		echo -n "Upgrade $prog database: "
		$ZM_PATH_BIN/zmupdate.pl --version=$OLD_VERSION --noi && ( cd $ZM_PATH_UPDATE; perl $ZM_PATH_BIN/zmupdate.pl -f )
		RETVAL=$?
		[ $RETVAL = 0 ] && echo_success
		[ $RETVAL != 0 ] && echo_failure
		echo
		return $RETVAL
	fi
}

start()
{
	loadconf || return $?
	checkcfg || return $?
	checkdb || return $?
	/usr/local/sbin/motd.sh > /etc/motd
	echo -n "Starting $prog: "
	[ ! -d @ZM_RUNDIR@ ] \
		&& mkdir -m 774 @ZM_RUNDIR@ \
		&& chown $ZM_WEB_USER:$ZM_WEB_GROUP @ZM_RUNDIR@
	GetPath="select Value from Config where Name='ZM_PATH_SOCKS'"
	ZM_PATH_SOCK=`echo $GetPath | mysql -B -h $ZM_DB_HOST -u $ZM_DB_USER -p$ZM_DB_PASS $ZM_DB_NAME | grep -v '^Value'`
	[ ! -d $ZM_PATH_SOCK ] \
		&& mkdir -m 774 $ZM_PATH_SOCK \
		&&chown $ZM_WEB_USER:$ZM_WEB_GROUP $ZM_PATH_SOCK
	$command start
	RETVAL=$?
	[ $RETVAL = 0 ] && echo_success
	[ $RETVAL != 0 ] && echo_failure
	echo
	[ $RETVAL = 0 ] && touch /var/lock/subsys/zm
	return $RETVAL
}

stop()
{
	echo -n $"Stopping $prog: "
	$command stop
	RETVAL=$?
	[ $RETVAL = 0 ] && echo_success
	[ $RETVAL != 0 ] && echo_failure
	echo
	[ $RETVAL = 0 ] && rm -f /var/lock/subsys/zm
}

status()
{
	result=`$command status`
	if [ "$result" = "running" ]; then
		echo "ZoneMinder is running"
		RETVAL=0
	else
		echo "ZoneMinder is stopped"
		RETVAL=1
	fi
}

case "$1" in
	'start')
		start
		;;
	'stop')
		stop
		;;
	'restart')
		stop
		start
		;;
	'condrestart')
		loadconf
		checkcfg
		result=`$ZM_PATH_BIN/zmdc.pl check`
		if [ "$result" = "running" ]; then
			$ZM_PATH_BIN/zmdc.pl shutdown > /dev/null
			start
		fi
		;;
	'status')
		status
		;;
	*)
		echo "Usage: $0 { start | stop | restart | condrestart | status }"
		RETVAL=1
		;;
esac
exit $RETVAL