#!/bin/ksh93

# start/stop the arpwatch daemon for discovering new IP/Ethernet adresses

. /lib/svc/share/smf_include.sh

ARPWATCH=@CLIENT_BASEDIR@/sbin/arpwatch

# Read command line arguments
METHOD="$1"		# %m
INSTANCE="$2"	# %i

# Set defaults; SMF_FMRI should have been set, but just in case.
if [[ -z ${SMF_FMRI} ]]; then
	[[ -z ${instance} ]] && instance='default'
	SMF_FMRI="svc:/network/saslauthd:${instance}"
fi

# Get a single value property.
# $1 .. Name of the property to lookup
# $2 .. vName, where to store the unescaped value
# $3 .. Optional: SMF_FMRI to use (default: ${SMF_FMRI})
# return: 0 .. non-empty value found; 1 .. prop does not exist or is empty
#         2 .. missing FMRI           3 .. usage error
function getSvcProp {
	[[ -z $1 || -z $2 ]] && print -u2 "getSvcProp() requires 2 args" && return 3
	typeset -n VAL=$2
	typeset FMRI=$3
	if [[ -z ${FMRI} ]]; then
		[[ -n ${SMF_FMRI} ]] && FMRI=${SMF_FMRI} || { VAL= ; return 2 ; }
	fi
	VAL="${ svcprop -p $1 ${FMRI} 2>/dev/null ; }"
	[[ ${VAL} == '""' ]] && { VAL= ; return 1 ; }
	# unescape
	VAL="${VAL//\\(['"''`';&()|^<>'\n''\t''\'\047])/\1}"	# \047 .. squote
	return 0
}

ZN=${ /sbin/zonename ; }
[[ ${ZN} == 'global' ]] && ZPPID=1 || ZPPID=${ pgrep -x zsched 2>/dev/null ; }

case "${METHOD}" in
	start)
		if [[ ! -x "${ARPWATCH}" ]]; then
			print -u2 "arpwatch not found"
			exit SMF_EXIT_ERR_FATAL
		fi
		unset ARGS; typeset -a ARGS
		getSvcProp config/all_bogons X
		[[ $X == 'true' ]] && ARGS+=( '-a' )
		getSvcProp config/no_rdns X
		[[ $X == 'true' ]] && ARGS+=( '-D' )
		getSvcProp config/vendors X
		[[ -n  $X ]] && ARGS+=( '-e' "$X" )
		getSvcProp config/datafile X
		if [[ -n  $X ]]; then
			[[ -e "$X" ]] || touch "$X"
			ARGS+=( '-f' "$X" )
		elif [[ ! -e '/var/arpwatch/arp.dat' ]]; then
			touch '/var/arpwatch/arp.dat'
		fi
		getSvcProp config/interface X
		[[ -n  $X ]] && ARGS+=( '-i' "$X" )
		getSvcProp config/log_facility X
		[[ -n  $X ]] && ARGS+=( '-l' "$X" )
		getSvcProp config/email X
		[[ -n  $X ]] && ARGS+=( '-m' "$X" )
		getSvcProp config/no_bogon_check X
		[[ $X == 'true' ]] && ARGS+=( '-N' )
		getSvcProp config/local_nets X
		if [[ -n  $X ]]; then
			for N in ${X//,/ } ; do
				ARGS+=( '-n' "$N" )
			done
		fi
		getSvcProp config/no_promiscuous X
		[[ $X == 'true' ]] && ARGS+=( '-p' )
		getSvcProp config/no_newstations X
		[[ $X == 'true' ]] && ARGS+=( '-S' )
		getSvcProp config/excludes X
		[[ -n  $X ]] && ARGS+=( '-X' "$X" )
		print 'Starting arpwatch ...'
		${ARPWATCH} "${ARGS[@]}"
		;;
	stop)
		# Determine PID of process(es) to stop
		PID=`pgrep -x -P 1 arpwatch`
		if [[ -n ${PID} ]]; then
			if kill $${PID} ; then
				print 'arpwatch stopped'
			else
				print 'arpwatch is not running'
			fi
		else
			print 'arpwatch is not running...'
		fi
		;;

	*)
		print -u2 "Usage: $0 {start|stop}"
		;;
esac

exit 0