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# Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
# Released under the 2-clause BSD license.
# shellcheck shell=sh disable=SC1008
arping_depend()
{
program arping arping2
before interface
}
arping_address()
{
local ip=${1%%/*} mac="$2" spoof="$3" foundmac= i= w= opts=
# We only handle IPv4 addresses
case "${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=${arping_wait:-5}
if command -v arping2 >/dev/null; then
if [ -n "${spoof}" ]; then
opts="${opts} -S ${spoof}"
else
[ -z "$(_get_inet_address)" ] && opts="${opts} -0"
fi
while [ ${w} -gt 0 -a -z "${foundmac}" ]; do
foundmac="$(arping2 ${opts} -r -c 1 -i "${IFACE}" "${ip}" 2>/dev/null | \
sed -e 'y/abcdef/ABCDEF/')"
: $(( w -= 1 ))
done
else
[ -z "$(_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')"
fi
[ -z "${foundmac}" ] && return 1
if [ -n "${mac}" ]; then
if [ "${mac}" != "${foundmac}" ]; then
vewarn "Found ${ip} but MAC ${foundmac} does not match"
return 1
fi
fi
return 0
}
_arping_in_config()
{
_get_array "config_${IFVAR}" | while read i; do
[ "${i}" = "arping" ] && return 1
done
return 1
}
arping_start()
{
local gateways= x= conf= i=
einfo "Pinging gateways on ${IFACE} for configuration"
eval gateways=\$gateways_${IFVAR}
if [ -z "${gateways}" ]; then
eerror "No gateways have been defined (gateways_${IFVAR}=\"...\")"
return 1
fi
eindent
for x in ${gateways}; do
local IFS=,
set -- ${x}
local ip=$1 mac=$2 spoof=$3 extra=
unset IFS
if [ -n "${mac}" ]; then
mac="$(echo "${mac}" | tr '[:lower:]' '[:upper:]')"
extra="(MAC ${mac})"
fi
vebegin "${ip} ${extra}"
if arping_address "${ip}" "${mac}" "${spoof}"; then
local 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}${i}"
fi
done
unset IFS
[ -n "${mac}" ] && conf="${conf}_$(echo "${mac}" | sed -e 's/://g')"
eend 0
eoutdent
veinfo "Configuring ${IFACE} for ${ip} ${extra}"
_configure_variables ${conf}
# Call the system module as we've aleady passed it by ....
# And it *has* to be pre_start for other things to work correctly
system_pre_start
# Ensure that we have a valid config - ie arping is no longer there
local IFS="$__IFS"
for i in $(_get_array "config_${IFVAR}"); do
if [ "${i}" = "arping" ]; then
eend 1 "No config found for ${ip} (config_${conf}=\"...\")"
continue 2
fi
done
unset IFS
_load_config
return 0
fi
veend 1
done
eoutdent
return 1
}
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