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#!/bin/sh /etc/rc.common
. /lib/functions/network.sh
START=70
pidfile='/var/run/babeld.pid'
CONFIGFILE='/var/etc/babeld.conf'
OTHERCONFIGFILE="/etc/babeld.conf"
EXTRA_COMMANDS="status"
EXTRA_HELP=" status Dump Babel's table to the log file."
# Append a line to the configuration file
cfg_append() {
local value="$1"
echo "$value" >> $CONFIGFILE
}
cfg_append_option() {
local section="$1"
local option="$2"
local value
config_get value "$section" "$option"
# babeld convention for options is '-', not '_'
[ -n "$value" ] && cfg_append "${option//_/-} $value"
}
# Append to the "$buffer" variable
append_ifname() {
local section="$1"
local option="$2"
local switch="$3"
local _name
config_get _name "$section" "$option"
[ -z "$_name" ] && return 0
local ifname=$(uci_get_state network "$_name" ifname "$_name")
append buffer "$switch $ifname"
}
append_bool() {
local section="$1"
local option="$2"
local value="$3"
local _loctmp
config_get_bool _loctmp "$section" "$option" 0
[ "$_loctmp" -gt 0 ] && append buffer "$value"
}
append_parm() {
local section="$1"
local option="$2"
local switch="$3"
local _loctmp
config_get _loctmp "$section" "$option"
[ -z "$_loctmp" ] && return 0
append buffer "$switch $_loctmp"
}
babel_filter() {
local cfg="$1"
local _loctmp
local _ignored
config_get_bool _ignored "$cfg" 'ignore' 0
[ "$_ignored" -eq 1 ] && return 0
unset buffer
append_parm "$cfg" 'type' ''
append_bool "$cfg" 'local' 'local'
append_parm "$cfg" 'ip' 'ip'
append_parm "$cfg" 'eq' 'eq'
append_parm "$cfg" 'le' 'le'
append_parm "$cfg" 'ge' 'ge'
append_parm "$cfg" 'neigh' 'neigh'
append_parm "$cfg" 'id' 'id'
append_parm "$cfg" 'proto' 'proto'
append_ifname "$cfg" 'if' 'if'
append_parm "$cfg" 'action' ''
cfg_append "$buffer"
}
# Only one of babeld's options is allowed multiple times, "import-table".
# We just append it multiple times.
list_cb() {
option_cb "$@"
}
babel_config_cb() {
local type="$1"
local section="$2"
case "$type" in
"general")
option_cb() {
local option="$1"
local value="$2"
cfg_append "${option//_/-} $value"
}
;;
"interface")
unset interface
network_get_device interface "$section" || interface="$section"
option_cb() {
local option="$1"
local value="$2"
cfg_append "interface $interface ${option//_/-} $value"
}
# Handle ignore options.
local _ignored
# This works because we loaded the whole configuration
# beforehand (see config_load below).
config_get_bool _ignored "$section" 'ignore' 0
if [ "$_ignored" -eq 1 ]
then
option_cb() { return; }
else
# Also include an empty "interface $interface" statement,
# so that babeld operates on this interface.
cfg_append "interface $interface"
fi
;;
*)
# Don't use reset_cb, this would also reset config_cb
option_cb() { return; }
;;
esac
}
start() {
mkdir -p /var/lib
# Start by emptying the generated config file
>"$CONFIGFILE"
# First load the whole config file, without callbacks, so that we are
# aware of all "ignore" options in the second pass.
config_load babeld
# Parse general and interface sections thanks to the "config_cb()"
# callback. This allows to loop over all options without having to
# know their name in advance.
config_cb() { babel_config_cb "$@"; }
config_load babeld
# Parse filters separately, since we know which options we expect
config_foreach babel_filter filter
# Using multiple config files is supported since babeld 1.5.1
/usr/sbin/babeld -D -I "$pidfile" -c "$OTHERCONFIGFILE" -c "$CONFIGFILE"
# Wait for the pidfile to appear
for i in 1 2
do
[ -f "$pidfile" ] || sleep 1
done
[ -f "$pidfile" ] || (echo "Failed to start babeld"; exit 42)
}
stop() {
[ -f "$pidfile" ] && kill $(cat $pidfile)
# avoid race-condition on restart: wait for
# babeld to die for real.
[ -f "$pidfile" ] && sleep 1
[ -f "$pidfile" ] && sleep 1
[ -f "$pidfile" ] && sleep 1
[ -f "$pidfile" ] && exit 42
}
status() {
[ -f "$pidfile" ] && kill -USR1 $(cat $pidfile)
}
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