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76 lines
2.9 KiB
76 lines
2.9 KiB
#!/usr/bin/env bash
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# Pi-hole: A black hole for Internet advertisements
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# (c) 2017 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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# Flushes Pi-hole's log file
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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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colfile="/opt/pihole/COL_TABLE"
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source ${colfile}
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# In case we're running at the same time as a system logrotate, use a
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# separate logrotate state file to prevent stepping on each other's
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# toes.
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STATEFILE="/var/lib/logrotate/pihole"
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# Determine database location
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# Obtain DBFILE=... setting from pihole-FTL.db
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# Constructed to return nothing when
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# a) the setting is not present in the config file, or
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# b) the setting is commented out (e.g. "#DBFILE=...")
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FTLconf="/etc/pihole/pihole-FTL.conf"
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if [ -e "$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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if [[ "$@" != *"quiet"* ]]; then
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echo -ne " ${INFO} Flushing /var/log/pihole/pihole.log ..."
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fi
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if [[ "$@" == *"once"* ]]; then
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# Nightly logrotation
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if command -v /usr/sbin/logrotate >/dev/null; then
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# Logrotate once
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/usr/sbin/logrotate --force --state "${STATEFILE}" /etc/pihole/logrotate
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else
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# Copy pihole.log over to pihole.log.1
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# and empty out pihole.log
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# Note that moving the file is not an option, as
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# dnsmasq would happily continue writing into the
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# moved file (it will have the same file handler)
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cp -p /var/log/pihole/pihole.log /var/log/pihole/pihole.log.1
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echo " " > /var/log/pihole/pihole.log
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chmod 644 /var/log/pihole/pihole.log
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fi
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else
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# Manual flushing
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if command -v /usr/sbin/logrotate >/dev/null; then
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# Logrotate twice to move all data out of sight of FTL
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/usr/sbin/logrotate --force --state "${STATEFILE}" /etc/pihole/logrotate; sleep 3
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/usr/sbin/logrotate --force --state "${STATEFILE}" /etc/pihole/logrotate
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else
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# Flush both pihole.log and pihole.log.1 (if existing)
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echo " " > /var/log/pihole/pihole.log
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if [ -f /var/log/pihole/pihole.log.1 ]; then
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echo " " > /var/log/pihole/pihole.log.1
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chmod 644 /var/log/pihole/pihole.log.1
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fi
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fi
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# Delete most recent 24 hours from FTL's database, leave even older data intact (don't wipe out all history)
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deleted=$(pihole-FTL sqlite3 "${DBFILE}" "DELETE FROM query_storage WHERE timestamp >= strftime('%s','now')-86400; select changes() from query_storage limit 1")
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# Restart pihole-FTL to force reloading history
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sudo pihole restartdns
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fi
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if [[ "$@" != *"quiet"* ]]; then
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echo -e "${OVER} ${TICK} Flushed /var/log/pihole/pihole.log"
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echo -e " ${TICK} Deleted ${deleted} queries from database"
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fi
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