128 lines
3.2 KiB
Bash
128 lines
3.2 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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# See interfaces-batman(5) for a list of supported options for hardifs as well as meshifs.
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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 ! 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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#
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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_meshif_options () {
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# We only care for options of format IF_BATMAN_<OPTION_NAME>
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env | grep '^IF_BATMAN_[A-Z0-9_]\+' | while IFS="=" read opt value; do
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# Members, ignore-regex, routing-algo, and throughput_override are handled seperately
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if [ "${opt}" = "IF_BATMAN_IFACES" -o \
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"${opt}" = "IF_BATMAN_IFACES_IGNORE_REGEX" -o \
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"${opt}" = "IF_BATMAN_ROUTING_ALGO" -o \
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"${opt}" = "IF_BATMAN_THROUGHPUT_OVERRIDE" ]; then
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continue
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fi
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# Convert options for the actual name
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real_opt=$(echo "${opt}" | sed -e 's/^IF_BATMAN_\([A-Z0-9_]\+\)/\1/' | tr '[A-Z]' '[a-z]')
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${MOCK} batctl "${mesh_if_param}" "${IFACE}" "${real_opt}" "${value}"
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done
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}
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set_routing_algo () {
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if [ "${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. underlay interfaces (hardifs)
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set_hardif_options () {
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# Query hardif parameter manually for now
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for hardif in ${IF_BATMAN_IFACES}; do
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penalty=$(ifquery -p "batman-hop-penalty" "${hardif}")
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if [ "${penalty}" ]; then
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${MOCK} batctl hardif "${hardif}" hop_penalty "${penalty}"
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fi
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throughput=$(ifquery -p "batman-throughput-override" "${hardif}")
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if [ "${throughput}" ]; then
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${MOCK} batctl hardif "${hardif}" throughput_override "${througput}"
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fi
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done
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}
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case "${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}" "${IFACE}" interface create || true
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fi
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fi
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;;
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pre-up)
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# Main B.A.T.M.A.N. adv. interface (meshif)
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if [ "${IF_BATMAN_IFACES}" ]; then
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batctl_if add
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set_meshif_options
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set_hardif_options
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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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