#!/bin/sh

### BEGIN INIT INFO
# Provides:	     lemonldap-ng-fastcgi-server
# Required-Start:    $local_fs $remote_fs $network $syslog $named
# Required-Stop:     $local_fs $remote_fs $network $syslog $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the Lemonldap::NG FastCGI server
# Description:       starts Lemonldap::NG FastCGI server using start-stop-daemon
### END INIT INFO

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/sbin/llng-fastcgi-server
NAME=llng-fastcgi-server
DESC=llng-fastcgi-server

# Include llng-fastcgi-server defaults if available
if [ -r /etc/default/lemonldap-ng-fastcgi-server ]; then
	. /etc/default/lemonldap-ng-fastcgi-server
fi

STOP_SCHEDULE="${STOP_SCHEDULE:-TERM/5/KILL/5}"

test -x $DAEMON || exit 0

. /lib/init/vars.sh
. /lib/lsb/init-functions

# Try to extract llng-fastcgi-server pidfile
if [ -z "$PID" ]; then
	PID=/run/llng-fastcgi-server/llng-fastcgi-server.pid
fi
if [ -z "$SOCKET" ]; then
	SOCKET=/run/llng-fastcgi-server/llng-fastcgi.sock
fi

for f in "$PID" "$SOCKET"; do
	DIR=`dirname "$f"`
	if [ ! -d "$DIR" ]; then
		mkdir -p "$DIR"
		if [ -n "$USER" ]; then
			chown "$USER" "$DIR"
		fi
		if [ -n "$GROUP" ]; then
			chgrp "$GROUP" "$DIR"
		fi
	fi
done

DAEMON_OPTS="-p ${PID} -u ${USER} -g ${GROUP} -s ${SOCKET}"

if [ -z "$CUSTOM_FUNCTIONS_FILE" ]; then
	DAEMON_OPTS="$DAEMON_OPTS -f ${CUSTOM_FUNCTIONS_FILE}"
fi

start_server() {
	# Start the daemon/service
	#
	# Returns:
	#   0 if daemon has been started
	#   1 if daemon was already running
	#   2 if daemon could not be started
	start-stop-daemon --start --quiet --pidfile $PID --exec $DAEMON --test > /dev/null \
		|| return 1
	start-stop-daemon --start --quiet --pidfile $PID --exec $DAEMON -- \
		$DAEMON_OPTS 2>/dev/null \
		|| return 2
}

stop_server() {
	# Stops the daemon/service
	#
	# Return
	#   0 if daemon has been stopped
	#   1 if daemon was already stopped
	#   2 if daemon could not be stopped
	#   other if a failure occurred
	start-stop-daemon --stop --quiet --retry=$STOP_SCHEDULE --pidfile $PID --user=$USER --group=$GROUP
	RETVAL="$?"
	sleep 1
	return "$RETVAL"
}

reload_server() {
	# Function that sends a SIGHUP to the daemon/service
	start-stop-daemon --stop --signal HUP --quiet --pidfile $PID --exec $DAEMON
	return 0
}

case "$1" in
	start)
		log_daemon_msg "Starting $DESC" "$NAME"
		start_server
		case "$?" in
			0|1) log_end_msg 0 ;;
			2)   log_end_msg 1 ;;
		esac
		;;
	stop)
		log_daemon_msg "Stopping $DESC" "$NAME"
		stop_server
		case "$?" in
			0|1) log_end_msg 0 ;;
			2)   log_end_msg 1 ;;
		esac
		;;
	restart)
		log_daemon_msg "Restarting $DESC" "$NAME"

		stop_server
		case "$?" in
			0|1)
				start_server
				case "$?" in
					0) log_end_msg 0 ;;
					1) log_end_msg 1 ;; # Old process is still running
					*) log_end_msg 1 ;; # Failed to start
				esac
				;;
			*)
				# Failed to stop
				log_end_msg 1
				;;
		esac
		;;
	reload|force-reload)
		log_daemon_msg "Reloading $DESC configuration" "$NAME"
		reload_server
		log_end_msg $?
		;;
	status)
		status_of_proc -p $PID "$DAEMON" "$NAME" && exit 0 || exit $?
		;;
	*)
		echo "Usage: $NAME {start|stop|restart|reload|force-reload|status}" >&2
		exit 3
		;;
esac
