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Merge pull request #62 from BarbarossaTM/batman

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WIP: Add executor for managing B.A.T.M.A.N. adv. interfaces
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Ariadne Conill 2020-09-11 02:45:11 -06:00 committed by GitHub
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#!/bin/sh
#
# Maximilian Wilhelm <max@sdn.clinic>
# -- Wed 26 Aug 2020 08:15:58 PM CEST
#
# This executor is responsible for setting up the main B.A.T.M.A.N. adv. interface (eg. bat0)
# as well as managing settings of the underlying interfaces (hardifs).
#
# Known options for the main interface are:
# IF_BATMAN_IFACES Space separated list of interfaces to be part of this B.A.T.M.A.N. adv. instance
# IF_BATMAN_IFACES_IGNORE_REGEX Interfaces to ignore when verifying configuration (regexp)
# IF_BATMAN_DISTRIBUTED_ARP_TABLE 'enable' or 'disable' DAT of this B.A.T.M.A.N. adv. instance
# IF_BATMAN_MULTICAST_MODE 'enable' or 'disable' the multicast mode of this B.A.T.M.A.N. adv. instance
# IF_BATMAN_GW_MODE Set the gateway mode of this B.A.T.M.A.N. adv. instance
# IF_BATMAN_HOP_PENALTY Set the hop penalty of this B.A.T.M.A.N. adv. instance
#
# Known options for underlying interfaces are:
# IF_BATMAN_IFACE_PENALTY Set the hop penalty of this B.A.T.M.A.N. adv. interface
#
set -e
if [ "$VERBOSE" ]; then
set -x
fi
if [ "${IF_BATMAN_IFACES}" -o "${IF_BATMAN_IFACE_PENALTY}" ]; then
if ! which batctl >/dev/null 2>&1; then
echo "Error: batctl utility not found!" >&2
exit 1
fi
fi
#
# Compatiblity glue: Newer versions of batctl print a deprecation
# warning when called with -m <batif>. Avoid spamming the log and
# producting SPAM by silently handling this here.
mesh_if_param="-m"
if batctl -h 2>&1 | grep -q "meshif"; then
mesh_if_param="meshif"
fi
#
# Functions to manage main B.A.T.M.A.N. adv. interface
batctl_if () {
for iface in ${IF_BATMAN_IFACES}; do
${MOCK} batctl "${mesh_if_param}" "${IFACE}" interface "$1" "${iface}"
done
}
set_batman_params () {
[ "${IF_BATMAN_DISTRIBUTED_ARP_TABLE}" ] && ${MOCK} batctl "${mesh_if_param}" "${IFACE}" distributed_arp_table "${IF_BATMAN_DISTRIBUTED_ARP_TABLE}"
[ "${IF_BATMAN_MULTICAST_MODE}" ] && ${MOCK} batctl "${mesh_if_param}" "${IFACE}" multicast_mode "${IF_BATMAN_MULTICAST_MODE}"
[ "${IF_BATMAN_HOP_PENALTY}" ] && ${MOCK} batctl "${mesh_if_param}" "${IFACE}" hop_penalty "${IF_BATMAN_HOP_PENALTY}"
[ "${IF_BATMAN_GW_MODE}" ] && ${MOCK} batctl "${mesh_if_param}" "${IFACE}" gw_mode "${IF_BATMAN_GW_MODE}"
}
#
# Functions to manage B.A.T.M.A.N. adv. underlying interfaces
set_iface_penalty () {
${MOCK} batctl hardif "${IFACE}" hop_penalty "${IF_BATMAN_IFACE_PENALTY}"
}
case "${PHASE}" in
depend)
if [ "${IF_BATMAN_IFACES}" ]; then
echo "${IF_BATMAN_IFACES}"
fi
;;
create)
# Main B.A.T.M.A.N. adv. interface
if [ "${IF_BATMAN_IFACES}" ]; then
if [ ! -d "/sys/class/net/${IFACE}" ]; then
batctl "${mesh_if_param}" "${IFACE}" interface create || true
fi
fi
;;
pre-up)
# Main B.A.T.M.A.N. adv. interface
if [ "${IF_BATMAN_IFACES}" ]; then
batctl_if add
set_batman_params
# B.A.T.M.A.N. adv. underlying interface
elif [ "${IF_BATMAN_IFACE_PENALTY}" ]; then
set_iface_penalty
fi
;;
destroy)
if [ "${IF_BATMAN_IFACES}" -a -d "/sys/class/net/${IFACE}" ]; then
# Newer versions of batctl provide the "interface destroy" API, try to use it
if ! batctl "${mesh_if_param}" "${IFACE}" interface destroy 2>/dev/null; then
# Fall back to old style member interface removal
batctl_if del
fi
fi
;;
*)
exit 0
;;
esac