Having PiHole pull a list of blocked ad domains is simple enough, but it gets a little bit more complicated if you want to pull a list of blocked zones (e.g. a block for *.foo.com)
This script (originally created in ADBLK-12) can be run as a cron to periodically pull down a list of zones, turn them into regexes and feed them into pihole so that every label under that name is also blocked
#!/bin/bash
#
# Pull down a list of blocked zones (implemented in ADBLK-12)
# then translate them into regex's to feed into Pihole
#
# This is better than blocking upstream, as a block in FTL will
# result in the adblock counter increasing
#
# Copyright (c) 2019 B Tasker
# Released under GNU GPL V3 - see https://www.gnu.org/licenses/gpl-3.0.txt
#
#
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
# Create a temp file
OUT="$(mktemp)"
> $OUT
# Fetch the blocked zone file
for zone in `curl -s "https://www.bentasker.co.uk/adblock/blockedzones.txt"`
do
regex=$(echo "$zone" | sed 's~\.~\\\.~g')
echo "^.+\.$regex\$" >> $OUT
done
count=$(wc -l "$OUT" | cut -d\ -f1)
if [ $count -gt 0 ]
then
# Check the files actually differ
cd /etc/pihole
diff -u "$OUT" regex.list > /dev/null
if [ "$?" == "1" ]
then
# Files differ. Make a backup
cp -n regex.list regex.list.old
cat "$OUT" > regex.list
# Tell Pihole to reload the regexes
echo ">recompile-regex" | nc -q1 localhost 4711
fi
fi
rm -f "$OUT"
echo "0 */2 * * * root /root/update_ads.sh" | sudo tee /etc/cron.d/update_ads