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