#! /bin/sh

### BEGIN INIT INFO
# Provides:          rsyncd
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Should-Start:      $named
# Default-Start:     2 3 4 5
# Default-Stop:      1
# Short-Description: fast remote file copy program daemon
# Description:       rsync is a program that allows files to be copied to and
#                    from remote machines in much the same way as rcp.
#                    This provides rsyncd daemon functionality.
### END INIT INFO

set -e

# /etc/init.d/rsync: start and stop the rsync daemon

DAEMON=/usr/bin/rsync
RSYNC_ENABLE=false
RSYNC_OPTS=''
RSYNC_DEFAULTS_FILE=/etc/default/rsync
RSYNC_CONFIG_FILE=/etc/rsyncd.conf
RSYNC_NICE_PARM=''

test -x $DAEMON || exit 0

. /lib/lsb/init-functions
. /etc/default/rcS

if [ -s $RSYNC_DEFAULTS_FILE ]; then
    . $RSYNC_DEFAULTS_FILE
    case "x$RSYNC_ENABLE" in
	xtrue|xfalse)	;;
	xinetd)		exit 0
			;;
	*)		log_failure_msg "Value of RSYNC_ENABLE in $RSYNC_DEFAULTS_FILE must be either 'true' or 'false';"
			log_failure_msg "not starting rsync daemon."
			exit 1
			;;
    esac
    case "x$RSYNC_NICE" in
	x[0-9])		RSYNC_NICE_PARM="--nicelevel $RSYNC_NICE";;
	x[1-9][0-9])	RSYNC_NICE_PARM="--nicelevel $RSYNC_NICE";;
	x)		;;
	*)		log_warning_msg "Value of RSYNC_NICE in $RSYNC_DEFAULTS_FILE must be a value between 0 and 19 (inclusive);"
			log_warning_msg "ignoring RSYNC_NICE now."
			;;
    esac
fi

export PATH="${PATH:+$PATH:}/usr/sbin:/sbin"

case "$1" in
  start)
	if "$RSYNC_ENABLE"; then
	    log_daemon_msg "Starting rsync daemon" "rsync"
	    if [ -s /var/run/rsync.pid ] && kill -0 $(cat /var/run/rsync.pid) >/dev/null 2>&1; then
		log_progress_msg "apparently already running"
		log_end_msg 0
		exit 0
	    fi
	    if [ ! -s "$RSYNC_CONFIG_FILE" ]; then
		log_failure_msg "missing or empty config file $RSYNC_CONFIG_FILE"
		log_end_msg 1
		exit 1
	    fi
	    if start-stop-daemon --start --quiet --background \
		--pidfile /var/run/rsync.pid --make-pidfile \
		$RSYNC_NICE_PARM --exec /usr/bin/rsync \
		-- --no-detach --daemon --config "$RSYNC_CONFIG_FILE" $RSYNC_OPTS
	    then
		rc=0
		sleep 1
		if ! kill -0 $(cat /var/run/rsync.pid) >/dev/null 2>&1; then
		    log_failure_msg "rsync daemon failed to start"
		    rc=1
		fi
	    else
		rc=1
	    fi
	    if [ $rc -eq 0 ]; then
		log_end_msg 0
	    else
		log_end_msg 1
		rm -f /var/run/rsync.pid
	    fi
	else
	    if [ -s "$RSYNC_CONFIG_FILE" ]; then
		[ "$VERBOSE" != no ] && log_warning_msg "rsync daemon not enabled in /etc/default/rsync, not starting..."
	    fi
	fi
	;;
  stop)
	log_daemon_msg "Stopping rsync daemon" "rsync"
	start-stop-daemon --stop --quiet --oknodo --pidfile /var/run/rsync.pid
	log_end_msg $?
	rm -f /var/run/rsync.pid
	;;

  reload|force-reload)
	log_warning_msg "Reloading rsync daemon: not needed, as the daemon"
	log_warning_msg "re-reads the config file whenever a client connects."
	;;

  restart)
	set +e
	if $RSYNC_ENABLE; then
	    log_daemon_msg "Restarting rsync daemon" "rsync"
	    if [ -s /var/run/rsync.pid ] && kill -0 $(cat /var/run/rsync.pid) >/dev/null 2>&1; then
		start-stop-daemon --stop --quiet --oknodo --pidfile /var/run/rsync.pid || true
		sleep 1
	    else
		log_warning_msg "rsync daemon not running, attempting to start."
	    	rm -f /var/run/rsync.pid
	    fi
	    if [ ! -s "$RSYNC_CONFIG_FILE" ]; then
		log_failure_msg "missing or empty config file $RSYNC_CONFIG_FILE"
		log_end_msg 1
		exit 1
	    fi
	    if start-stop-daemon --start --quiet --background \
		--pidfile /var/run/rsync.pid --make-pidfile \
		$RSYNC_NICE_PARM --exec /usr/bin/rsync \
		-- --no-detach --daemon --config "$RSYNC_CONFIG_FILE" $RSYNC_OPTS
	    then
		rc=0
		sleep 1
		if ! kill -0 $(cat /var/run/rsync.pid) >/dev/null 2>&1; then
		    log_failure_msg "rsync daemon failed to start"
		    rc=1
		fi
	    else
		rc=1
	    fi
	    if [ $rc -eq 0 ]; then
		log_end_msg 0
	    else
		log_end_msg 1
		rm -f /var/run/rsync.pid
	    fi
	else
	    [ "$VERBOSE" != no ] && log_warning_msg "rsync daemon not enabled in /etc/default/rsync, not starting..."
	fi
	;;
  status)
	status_of_proc -p /var/run/rsync.pid "$DAEMON" rsync
	exit $?	# exit 0 would be enough due to set -e
	;;
  *)
	echo "Usage: /etc/init.d/rsync {start|stop|reload|force-reload|restart|status}"
	exit 1
esac

exit 0
