/usr/lib/uec-provisioning/ip_helper is in uec-provisioning-common 0.4.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | #!/bin/sh -e
#
# ip_helper - help determine uec-provisioning ip ranges
# Copyright (C) 2010 Canonical, Ltd.
#
# Authors:
# * Chris Cheney <chris.cheney@canonical.com>
# * Dustin Kirkland <kirkland@canonical.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
interface=$(tail -n1 /proc/net/route | awk '{print $1}')
ipaddr=$(LC_ALL=C /sbin/ifconfig "$interface")
ipaddr=${ipaddr#* inet addr:}
ipaddr=${ipaddr%% *}
gw=$(route -n | grep ^0.0.0.0 | awk '{print $2}')
gw4="${gw#*.*.*.}"
case "$1" in
address)
echo "$ipaddr"
;;
range)
if [ $gw4 -ge 222 ]; then
echo "${gw%.*}.`expr $gw4 - 32`-${gw%.*}.`expr $gw4 - 1`"
elif [ $gw4 -le 32 ]; then
echo "${gw%.*}.`expr $gw4 + 1`-${gw%.*}.`expr $gw4 + 32`"
fi
;;
*)
exit 1
;;
esac
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