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|
#!/usr/bin/env bash
# Pi-hole: A black hole for Internet advertisements
# (c) 2015 by Jacob Salmela
# Network-wide ad blocking via your Raspberry Pi
# http://pi-hole.net
# Compiles a list of ad-serving domains by downloading them from multiple sources
#
# Pi-hole 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, either version 2 of the License, or
# (at your option) any later version.
# Run this script as root or under sudo
echo ":::"
if [[ $EUID -eq 0 ]];then
echo "::: You are root."
else
echo "::: sudo will be used."
# Check if it is actually installed
# If it isn't, exit because the install cannot complete
if [[ $(dpkg-query -s sudo) ]];then
export SUDO="sudo"
else
echo "::: Please install sudo or run this script as root."
exit 1
fi
fi
piholeIPfile=/tmp/piholeIP
piholeIPv6file=/etc/pihole/.useIPv6
adListFile=/etc/pihole/adlists.list
adListDefault=/etc/pihole/adlists.default
whitelistScript=/usr/local/bin/whitelist.sh
blacklistScript=/usr/local/bin/blacklist.sh
if [[ -f $piholeIPfile ]];then
# If the file exists, it means it was exported from the installation script and we should use that value instead of detecting it in this script
piholeIP=$(cat $piholeIPfile)
rm $piholeIPfile
else
# Otherwise, the IP address can be taken directly from the machine, which will happen when the script is run by the user and not the installation script
IPv4dev=$(ip route get 8.8.8.8 | awk '{for(i=1;i<=NF;i++)if($i~/dev/)print $(i+1)}')
piholeIPCIDR=$(ip -o -f inet addr show dev $IPv4dev | awk '{print $4}' | awk 'END {print}')
piholeIP=${piholeIPCIDR%/*}
fi
if [[ -f $piholeIPv6file ]];then
# If the file exists, then the user previously chose to use IPv6 in the automated installer
piholeIPv6=$(ip -6 route get 2001:4860:4860::8888 | awk -F " " '{ for(i=1;i<=NF;i++) if ($i == "src") print $(i+1) }')
fi
# Variables for various stages of downloading and formatting the list
basename=pihole
piholeDir=/etc/$basename
adList=$piholeDir/gravity.list
blacklist=$piholeDir/blacklist.txt
whitelist=$piholeDir/whitelist.txt
latentWhitelist=$piholeDir/latentWhitelist.txt
justDomainsExtension=domains
matterandlight=$basename.0.matterandlight.txt
supernova=$basename.1.supernova.txt
eventHorizon=$basename.2.eventHorizon.txt
accretionDisc=$basename.3.accretionDisc.txt
eyeOfTheNeedle=$basename.4.wormhole.txt
# After setting defaults, check if there's local overrides
if [[ -r $piholeDir/pihole.conf ]];then
echo "::: Local calibration requested..."
. $piholeDir/pihole.conf
fi
spinner(){
local pid=$1
local delay=0.001
local spinstr='/-\|'
spin='-\|/'
i=0
while $SUDO kill -0 $pid 2>/dev/null
do
i=$(( (i+1) %4 ))
printf "\b${spin:$i:1}"
sleep .1
done
printf "\b"
}
###########################
# collapse - begin formation of pihole
function gravity_collapse() {
echo "::: Neutrino emissions detected..."
echo ":::"
#Decide if we're using a custom ad block list, or defaults.
if [ -f $adListFile ]; then
#custom file found, use this instead of default
echo -n "::: Custom adList file detected. Reading..."
sources=()
while read -a line; do
#Do not read commented out or blank lines
if [[ $line = \#* ]] || [[ ! $line ]]; then
echo "" > /dev/null
else
sources+=($line)
fi
done < $adListFile
echo " done!"
else
#no custom file found, use defaults!
echo -n "::: No custom adlist file detected, reading from default file..."
sources=()
while read -a line; do
#Do not read commented out or blank lines
if [[ $line = \#* ]] || [[ ! $line ]]; then
echo "" > /dev/null
else
sources+=($line)
fi
done < $adListDefault
echo " done!"
fi
# Create the pihole resource directory if it doesn't exist. Future files will be stored here
if [[ -d $piholeDir ]];then
# Temporary hack to allow non-root access to pihole directory
# Will update later, needed for existing installs, new installs should
# create this directory as non-root
$SUDO chmod 777 $piholeDir
find "$piholeDir" -type f -exec $SUDO chmod 666 {} \; & spinner $!
echo "."
else
echo -n "::: Creating pihole directory..."
mkdir $piholeDir & spinner $!
echo " done!"
fi
}
# patternCheck - check to see if curl downloaded any new files.
function gravity_patternCheck() {
patternBuffer=$1
# check if the patternbuffer is a non-zero length file
if [[ -s "$patternBuffer" ]];then
# Some of the blocklists are copyright, they need to be downloaded
# and stored as is. They can be processed for content after they
# have been saved.
cp $patternBuffer $saveLocation
echo " List updated, transport successful!"
else
# curl didn't download any host files, probably because of the date check
echo " No changes detected, transport skipped!"
fi
}
# transport - curl the specified url with any needed command extentions
function gravity_transport() {
url=$1
cmd_ext=$2
agent=$3
# tmp file, so we don't have to store the (long!) lists in RAM
patternBuffer=$(mktemp)
heisenbergCompensator=""
if [[ -r $saveLocation ]]; then
# if domain has been saved, add file for date check to only download newer
heisenbergCompensator="-z $saveLocation"
fi
# Silently curl url
curl -s $cmd_ext $heisenbergCompensator -A "$agent" $url > $patternBuffer
# Check for list updates
gravity_patternCheck $patternBuffer
# Cleanup
rm -f $patternBuffer
}
# spinup - main gravity function
function gravity_spinup() {
echo "::: "
# Loop through domain list. Download each one and remove commented lines (lines beginning with '# 'or '/') and # blank lines
for ((i = 0; i < "${#sources[@]}"; i++))
do
url=${sources[$i]}
# Get just the domain from the URL
domain=$(echo "$url" | cut -d'/' -f3)
# Save the file as list.#.domain
saveLocation=$piholeDir/list.$i.$domain.$justDomainsExtension
activeDomains[$i]=$saveLocation
agent="Mozilla/10.0"
echo -n "::: Getting $domain list..."
# Use a case statement to download lists that need special cURL commands
# to complete properly and reset the user agent when required
case "$domain" in
"adblock.mahakala.is")
agent='Mozilla/5.0 (X11; Linux x86_64; rv:30.0) Gecko/20100101 Firefox/30.0'
cmd_ext="-e http://forum.xda-developers.com/"
;;
"pgl.yoyo.org")
cmd_ext="-d mimetype=plaintext -d hostformat=hosts"
;;
# Default is a simple request
*) cmd_ext=""
esac
gravity_transport "$url" "$cmd_ext" "$agent"
done
}
# Schwarzchild - aggregate domains to one list and add blacklisted domains
function gravity_Schwarzchild() {
echo "::: "
# Find all active domains and compile them into one file and remove CRs
echo -n "::: Aggregating list of domains..."
truncate -s 0 $piholeDir/$matterandlight & spinner $!
for i in "${activeDomains[@]}"
do
cat $i |tr -d '\r' >> $piholeDir/$matterandlight
done
echo " done!"
}
function gravity_Blacklist(){
# Append blacklist entries if they exist
echo -n "::: Running blacklist script to update HOSTS file...."
$blacklistScript -f -nr -q > /dev/null & spinner $!
numBlacklisted=$(wc -l < "/etc/pihole/blacklist.txt")
plural=; [[ "$numBlacklisted" != "1" ]] && plural=s
echo " $numBlacklisted domain${plural} blacklisted!"
}
function gravity_Whitelist() {
echo ":::"
# Prevent our sources from being pulled into the hole
plural=; [[ "${sources[@]}" != "1" ]] && plural=s
echo -n "::: Adding ${#sources[@]} ad list source${plural} to the whitelist..."
urls=()
for url in ${sources[@]}
do
tmp=$(echo "$url" | awk -F '/' '{print $3}')
urls=("${urls[@]}" $tmp)
done
echo " done!"
echo -n "::: Running whitelist script to update HOSTS file...."
$whitelistScript -f -nr -q ${urls[@]} > /dev/null & spinner $!
numWhitelisted=$(wc -l < "/etc/pihole/whitelist.txt")
plural=; [[ "$numWhitelisted" != "1" ]] && plural=s
echo " $numWhitelisted domain${plural} whitelisted!"
}
function gravity_unique() {
# Sort and remove duplicates
echo -n "::: Removing duplicate domains...."
sort -u $piholeDir/$supernova > $piholeDir/$eventHorizon & spinner $!
echo " done!"
numberOf=$(wc -l < $piholeDir/$eventHorizon)
echo "::: $numberOf unique domains trapped in the event horizon."
}
function gravity_hostFormat() {
# Format domain list as "192.168.x.x domain.com"
echo "::: Formatting domains into a HOSTS file..."
# If there is a value in the $piholeIPv6, then IPv6 will be used, so the awk command modified to create a line for both protocols
if [[ -n $piholeIPv6 ]];then
#Add dummy domain Pi-Hole.IsWorking.OK to the top of gravity.list to make ping result return a friendlier looking domain!
echo -e "$piholeIP Pi-Hole.IsWorking.OK \n$piholeIPv6 Pi-Hole.IsWorking.OK" > $piholeDir/$accretionDisc
cat $piholeDir/$eventHorizon | awk -v ipv4addr="$piholeIP" -v ipv6addr="$piholeIPv6" '{sub(/\r$/,""); print ipv4addr" "$0"\n"ipv6addr" "$0}' >> $piholeDir/$accretionDisc
else
# Otherwise, just create gravity.list as normal using IPv4
#Add dummy domain Pi-Hole.IsWorking.OK to the top of gravity.list to make ping result return a friendlier looking domain!
echo -e "$piholeIP Pi-Hole.IsWorking.OK" > $piholeDir/$accretionDisc
cat $piholeDir/$eventHorizon | awk -v ipv4addr="$piholeIP" '{sub(/\r$/,""); print ipv4addr" "$0}' >> $piholeDir/$accretionDisc
fi
# Copy the file over as /etc/pihole/gravity.list so dnsmasq can use it
cp $piholeDir/$accretionDisc $adList
}
# blackbody - remove any remnant files from script processes
function gravity_blackbody() {
# Loop through list files
for file in $piholeDir/*.$justDomainsExtension
do
# If list is in active array then leave it (noop) else rm the list
if [[ " ${activeDomains[@]} " =~ " ${file} " ]]; then
:
else
rm -f $file
fi
done
}
function gravity_advanced() {
# Remove comments and print only the domain name
# Most of the lists downloaded are already in hosts file format but the spacing/formating is not contigious
# This helps with that and makes it easier to read
# It also helps with debugging so each stage of the script can be researched more in depth
echo -n "::: Formatting list of domains to remove comments...."
awk '($1 !~ /^#/) { if (NF>1) {print $2} else {print $1}}' $piholeDir/$matterandlight | sed -nr -e 's/\.{2,}/./g' -e '/\./p' > $piholeDir/$supernova & spinner $!
echo " done!"
numberOf=$(wc -l < $piholeDir/$supernova)
echo "::: $numberOf domains being pulled in by gravity..."
gravity_unique
}
function gravity_reload() {
#Clear no longer needed files...
echo ":::"
echo -n "::: Cleaning up un-needed files..."
$SUDO rm /etc/pihole/pihole.*
echo " done!"
# Reload hosts file
echo ":::"
echo -n "::: Refresh lists in dnsmasq..."
dnsmasqPid=$(pidof dnsmasq)
find "$piholeDir" -type f -exec $SUDO chmod 666 {} \; & spinner $!
if [[ $dnsmasqPid ]]; then
# service already running - reload config
$SUDO kill -HUP $dnsmasqPid & spinner $!
else
# service not running, start it up
$SUDO service dnsmasq start & spinner $!
fi
echo " done!"
}
$SUDO cp /etc/.pihole/adlists.default /etc/pihole/adlists.default
gravity_collapse
gravity_spinup
gravity_Schwarzchild
gravity_advanced
gravity_hostFormat
gravity_blackbody
gravity_Whitelist
gravity_Blacklist
gravity_reload
|