pi-hole/advanced/Scripts/piholeARPTable.sh

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#!/usr/bin/env bash
# shellcheck disable=SC1090
# Pi-hole: A black hole for Internet advertisements
# (c) 2019 Pi-hole, LLC (https://pi-hole.net)
# Network-wide ad blocking via your own hardware.
#
# ARP table interaction
#
# This file is copyright under the latest version of the EUPL.
# Please see LICENSE file for your rights under this license.
coltable="/opt/pihole/COL_TABLE"
if [[ -f ${coltable} ]]; then
source ${coltable}
fi
# Determine database location
# Obtain DBFILE=... setting from pihole-FTL.db
# Constructed to return nothing when
# a) the setting is not present in the config file, or
# b) the setting is commented out (e.g. "#DBFILE=...")
FTLconf="/etc/pihole/pihole-FTL.conf"
if [ -e "$FTLconf" ]; then
DBFILE="$(sed -n -e 's/^\s*DBFILE\s*=\s*//p' ${FTLconf})"
fi
# Test for empty string. Use standard path in this case.
if [ -z "$DBFILE" ]; then
DBFILE="/etc/pihole/pihole-FTL.db"
fi
flushARP(){
local output
if [[ "${args[1]}" != "quiet" ]]; then
echo -ne " ${INFO} Flushing network table ..."
fi
# Truncate network_addresses table in pihole-FTL.db
# This needs to be done before we can truncate the network table due to
2021-01-19 18:33:38 +00:00
# foreign key constraints
if ! output=$(sqlite3 "${DBFILE}" "DELETE FROM network_addresses" 2>&1); then
echo -e "${OVER} ${CROSS} Failed to truncate network_addresses table"
echo " Database location: ${DBFILE}"
echo " Output: ${output}"
return 1
fi
# Truncate network table in pihole-FTL.db
if ! output=$(sqlite3 "${DBFILE}" "DELETE FROM network" 2>&1); then
echo -e "${OVER} ${CROSS} Failed to truncate network table"
echo " Database location: ${DBFILE}"
echo " Output: ${output}"
return 1
fi
if [[ "${args[1]}" != "quiet" ]]; then
echo -e "${OVER} ${TICK} Flushed network table"
fi
}
args=("$@")
case "${args[0]}" in
"arpflush" ) flushARP;;
esac