iiab/roles/openvpn/templates/announcer.j2

#!/bin/bash -x
# small daemon to identify this machine to the openvpn server

HANDLE=
UUID=

if [ -f /etc/iiab/openvpn_handle ]; then
    HANDLE=`cat /etc/iiab/openvpn_handle`
else
    source /etc/iiab/iiab.env
    # DANGEROUS AS OF AUGUST 2018:
    if [ -z "$HANDLE" ]; then
        HANDLE=`cat /etc/iiab/iiab.ini | gawk \
        '{ if((toupper($1) == "HANDLE") && ($2 == "=")) { print $3;}}'`
    fi
fi
if [ -f /etc/iiab/uuid ]; then
    UUID=`cat /etc/iiab/uuid`
fi
# start the daemon which will serve the handle on demand
# NEXT LINE OBSOLETE?  August 2018
source /etc/init.d/functions
SERVER=/usr/bin/ncat
PID_FILE=/var/run/openvpn/announce.pid
HANDLE=${HANDLE// /_}
{% if is_debuntu %}
ID=`printf "HANDLE = %s|UUID = %s|" $HANDLE $UUID`
$SERVER -l -k -p1705 --exec "/bin/echo $ID" &
{% else %}
daemon --pidfile=${PID_FILE} $SERVER "-l -k -p1705 --exec \"/usr/bin/echo $(printf 'HANDLE = %s|UUID = %s' $HANDLE $UUID)\"" &
{% endif %}