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#!/bin/sh # # 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 # timeout the read via trap for POSIX shell compatibility trap "exit 0" QUIT { sleep $timeout kill -3 $$ 2>/dev/null } & read -r input exit_code=$? cleaned_input=$(echo ${input} | sed "s/[^a-zA-Z0-9]//g") if [ ${exit_code} -eq 0 ] && [ "${cleaned_input}" = "PING" ];then echo "PONG" fi # always exit successful exit 0