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