#!/usr/bin/env bash
#
# Copyright (c) 2019 Dovecot authors, see the included COPYING file */
#
# This script is intended to be called by the script service and to be
# connected to a socket using a service configuration like this:
# 	executable = script -p /path/to/health-check.sh
#
# This simple example merely answers "PONG\n" if the input is "PING\n". It
# stops waiting for input after $TIMEOUT which causes the process to die
# which causes the script module to close the socket. Inputs and outputs
# can be written to STDIN and STDOUT, they are duplicated file-descriptors
# if called from the script service.

TIMEOUT=10

read -t ${TIMEOUT} -r input

exit_code=$?
cleaned_input=${input//[^a-zA-Z0-9]/}

if [ $exit_code -eq 0 ] && [ "$cleaned_input" = "PING" ];then
	echo "PONG"
fi
# always exit successful
exit 0