rendezvous/zeroconf in UNIX

I took another look at advertising services in Rendezvous and found that someone had written an init script for UNIX/Linux systems.

It launches the mDNSResponder service and mDNSPublish, which is OK if you only have one service. I decided to break them apart since I may have more than one. So below the fold, you’ll find an init script for mDNSResponder. As I figure out how to, I’ll work up one that reads some kind of config file and launches multiple services (sounds like a trivial think to do with awk, actually).

#!/bin/sh


# stolen from 'greenstripe'(a/k/a Manfred Heindl) on the MacOSXhints.com website

# this is only part of what I 'borrowed.'
# mDNSResponder

MDNS_RESPONDER_EXEC='/usr/local/bin/mDNSResponder'

MDNS_RESPONDER_CMDLINE='-i xl1' # change this to your interface

MDNS_RESPONDER_LOGFILE='/var/log/mDNSResponder.log'

MDNS_RESPONDER_PIDFILE='/var/run/mDNSResponder.pid'
case "$1" in

        start)

                if [ -x "${MDNS_RESPONDER_EXEC}" ]; then

                        ${MDNS_RESPONDER_EXEC} ${MDNS_RESPONDER_CMDLINE} >> ${MDNS_RESPONDER_LOGFILE} 2>&1 && echo -n ' mDNS Responder'
                fi

                ;;

        stop)

                killall mDNSResponder 2>/dev/null

                if [ $? -ne 0 ] ; then

                        echo 'mDNSResponder not started'

                fi

                ;;

        restart)

                $0 stop

                sleep 2

                $0 start

                ;;

        *)

                echo ""

                echo "Usage: `basename $0` { start | stop | restart }"

                echo ""

                exit 64

                ;;

esac