mirror of
https://github.com/pi-hole/dnsmasq.git
synced 2025-12-19 02:08:24 +00:00
55 lines
1.5 KiB
Bash
Executable File
55 lines
1.5 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
# Copyright (c) 2006 Simon Kelley
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; version 2 dated June, 1991.
|
|
#
|
|
# 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 General Public License for more details.
|
|
|
|
|
|
# if $1 is add del or old, this is a dnsmasq-called lease-change
|
|
# script, update the nvram database. if $1 is init, emit a
|
|
# dnsmasq-format lease file to stdout representing the current state of the
|
|
# database, this is called by dnsmasq at startup.
|
|
|
|
NVRAM=/usr/sbin/nvram
|
|
PREFIX=dnsmasq_lease_
|
|
|
|
# Arguments.
|
|
# $1 is action (add, del, old)
|
|
# $2 is MAC
|
|
# $3 is address
|
|
# $4 is hostname (optional, may be unset)
|
|
|
|
# env.
|
|
# DNSMASQ_LEASE_LENGTH or DNSMASQ_LEASE_EXPIRES (which depends on HAVE_BROKEN_RTC)
|
|
# DNSMASQ_CLIENT_ID (optional, may be unset)
|
|
|
|
# File.
|
|
# length|expires MAC addr hostname|* CLID|*
|
|
|
|
# Primary key is address.
|
|
|
|
if [ ${1} = init ] ; then
|
|
${NVRAM} show | sed -n -e "/^${PREFIX}.*/ s/^.*=//p"
|
|
else
|
|
if [ ${1} = del ] ; then
|
|
${NVRAM} unset ${PREFIX}${3}
|
|
fi
|
|
|
|
if [ ${1} = old ] || [ ${1} = add ] ; then
|
|
${NVRAM} set ${PREFIX}${3}="${DNSMASQ_LEASE_LENGTH:-}${DNSMASQ_LEASE_EXPIRES:-} ${2} ${3} ${4:-*} ${DNSMASQ_CLIENT_ID:-*}"
|
|
fi
|
|
${NVRAM} commit
|
|
fi
|
|
|
|
|
|
|
|
|
|
|