1 files changed, 111 insertions, 0 deletions
diff --git a/net.Linux/arping.sh b/net.Linux/arping.sh
new file mode 100644
index 0000000..763cb4c
--- /dev/null
+++ b/net.Linux/arping.sh
@@ -0,0 +1,111 @@
+# Copyright 2004-2007 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+arping_depend() {
+	program /sbin/arping
+	before interface
+}
+
+arping_address() {
+	local ip=${1%%/*} mac="$2" foundmac= i= w= opts=
+
+	# We only handle IPv4 addresses
+	case "${ip}" in
+		0.0.0.0|0) return 1 ;;
+		*.*.*.*) ;;
+		*) return 1 ;;
+	esac
+
+	# We need to bring the interface up to test
+	_exists "${iface}" || return 1 
+	_up "${iface}"
+
+	eval w=\$arping_wait_${IFVAR}
+	[ -z "${w}" ] && w=${arping_wait:-5}
+
+	[ -z "$(_get_inet_address)" ] && opts="${opts} -D"
+
+	foundmac="$(arping -w "${w}" ${opts} -f -I "${IFACE}" "${ip}" 2>/dev/null | \
+			sed -n -e 'y/abcdef/ABCDEF/' -e 's/.*\[\([^]]*\)\].*/\1/p')"
+	[ -z "${foundmac}" ] && return 1
+	
+	if [ -n "${mac}" ] ; then
+		if [ "${mac}" != "${foundmac}" ] ; then
+			vewarn "Found ${ip} but MAC ${foundmac} does not match"
+			return 1
+		fi
+	fi
+
+	return 0
+}
+
+arping_start() {
+	local gateways= x= conf= i=
+	einfo "Pinging gateways on ${IFACE} for configuration"
+
+	eval $(_get_array "gateways_${IFVAR}")
+	if [ -z "$@" ] ; then
+		eerror "No gateways have been defined (gateways_${IFVAR}=\"...\")"
+		return 1
+	fi
+
+	eindent
+	
+	for x in "$@"; do
+		eval set -- "${x}"
+		local ip=$1 mac=$2 extra=
+
+		if [ -n "${mac}" ] ; then
+			mac="$(echo "${mac}" | tr '[:lower:]' '[:upper:]')"
+			extra="(MAC ${mac})"
+		fi
+
+		vebegin "${ip} ${extra}"
+		if arping_address "${ip}" "${mac}" ; then
+			local OIFS=$IFS SIFS=${IFS-y}
+			IFS=.
+			for i in ${ip} ; do
+				if [ "${#i}" = "2" ] ; then
+					conf="${conf}0${i}"
+				elif [ "${#i}" = "1" ] ; then
+					conf="${conf}00${i}"
+				else
+					conf="${conf}${i}"
+				fi
+			done
+			if [ "${SIFS}" = "y" ] ; then
+				IFS=$OFIS
+			else
+				unset IFS
+			fi
+			[ -n "${mac}" ] && conf="${conf}_$(echo "${mac}" | sed -e 's/://g')"
+
+			veend 0
+			eoutdent
+			veinfo "Configuring ${IFACE} for ${ip} ${extra}"
+			_configure_variables "${conf}"
+
+			# Call the system module as we've aleady passed it by ....
+			# And it *has* to be pre_start for other things to work correctly
+			system_pre_start
+
+			# Ensure that we have a valid config - ie arping is no longer there
+			eval $(_get_array "config_${IFVAR}")
+			for i in "$@" ; do
+				if [ "${i}" = "arping" ] ; then
+					veend 1 "No config found for ${ip} (config_${conf}=\"...\")"
+					continue 2
+				fi
+			done
+
+			_load_config
+			return 0
+		fi
+		veend 1
+	done
+
+	eoutdent
+	return 1
+}
+
+# vim: set ts=4 :