mirror of
https://github.com/pi-hole/pi-hole.git
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328 lines
11 KiB
Bash
Executable file
328 lines
11 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Pi-hole: A black hole for Internet advertisements
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# (c) 2015 by Jacob Salmela
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# Network-wide ad blocking via your Raspberry Pi
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# http://pi-hole.net
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# Compiles a list of ad-serving domains by downloading them from multiple sources
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#
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# Pi-hole is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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# Run this script as root or under sudo
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echo ":::"
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if [[ $EUID -eq 0 ]];then
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echo "::: You are root."
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else
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echo "::: sudo will be used."
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# Check if it is actually installed
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# If it isn't, exit because the install cannot complete
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if [[ $(dpkg-query -s sudo) ]];then
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export SUDO="sudo"
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else
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echo "::: Please install sudo or run this script as root."
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exit 1
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fi
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fi
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adListFile=/etc/pihole/adlists.list
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adListDefault=/etc/pihole/adlists.default
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whitelistScript=/opt/pihole/whitelist.sh
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blacklistScript=/opt/pihole/blacklist.sh
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piholeIP="0.0.0.0"
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piholeIPv6file=/etc/pihole/.useIPv6
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if [[ -f $piholeIPv6file ]];then
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# If the file exists, then the user previously chose to use IPv6 in the automated installer
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piholeIPv6="::"
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fi
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# Variables for various stages of downloading and formatting the list
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basename=pihole
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piholeDir=/etc/$basename
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adList=$piholeDir/gravity.list
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justDomainsExtension=domains
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matterandlight=$basename.0.matterandlight.txt
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supernova=$basename.1.supernova.txt
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eventHorizon=$basename.2.eventHorizon.txt
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accretionDisc=$basename.3.accretionDisc.txt
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# After setting defaults, check if there's local overrides
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if [[ -r $piholeDir/pihole.conf ]];then
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echo "::: Local calibration requested..."
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. $piholeDir/pihole.conf
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fi
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###########################
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# collapse - begin formation of pihole
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function gravity_collapse() {
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echo "::: Neutrino emissions detected..."
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echo ":::"
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#Decide if we're using a custom ad block list, or defaults.
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if [ -f $adListFile ]; then
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#custom file found, use this instead of default
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echo -n "::: Custom adList file detected. Reading..."
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sources=()
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while read -r line; do
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#Do not read commented out or blank lines
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if [[ $line = \#* ]] || [[ ! $line ]]; then
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echo "" > /dev/null
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else
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sources+=($line)
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fi
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done < $adListFile
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echo " done!"
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else
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#no custom file found, use defaults!
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echo -n "::: No custom adlist file detected, reading from default file..."
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sources=()
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while read -r line; do
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#Do not read commented out or blank lines
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if [[ $line = \#* ]] || [[ ! $line ]]; then
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echo "" > /dev/null
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else
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sources+=($line)
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fi
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done < $adListDefault
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echo " done!"
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fi
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# Create the pihole resource directory if it doesn't exist. Future files will be stored here
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if [[ -d $piholeDir ]];then
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# Temporary hack to allow non-root access to pihole directory
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# Will update later, needed for existing installs, new installs should
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# create this directory as non-root
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$SUDO chmod 777 $piholeDir
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echo ":::"
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echo "::: Existing pihole directory found"
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else
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echo "::: Creating pihole directory..."
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mkdir $piholeDir
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$SUDO chmod 777 $piholeDir
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fi
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}
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# patternCheck - check to see if curl downloaded any new files.
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function gravity_patternCheck() {
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patternBuffer=$1
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# check if the patternbuffer is a non-zero length file
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if [[ -s "$patternBuffer" ]];then
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# Some of the blocklists are copyright, they need to be downloaded
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# and stored as is. They can be processed for content after they
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# have been saved.
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cp "$patternBuffer" "$saveLocation"
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echo " List updated, transport successful!"
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else
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# curl didn't download any host files, probably because of the date check
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echo " No changes detected, transport skipped!"
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fi
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}
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# transport - curl the specified url with any needed command extentions
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function gravity_transport() {
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url=$1
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cmd_ext=$2
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agent=$3
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# tmp file, so we don't have to store the (long!) lists in RAM
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patternBuffer=$(mktemp)
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heisenbergCompensator=""
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if [[ -r $saveLocation ]]; then
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# if domain has been saved, add file for date check to only download newer
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heisenbergCompensator="-z $saveLocation"
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fi
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# Silently curl url
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curl -s $cmd_ext $heisenbergCompensator -A "$agent" $url > $patternBuffer
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# Check for list updates
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gravity_patternCheck "$patternBuffer"
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# Cleanup
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rm -f "$patternBuffer"
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}
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# spinup - main gravity function
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function gravity_spinup() {
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echo ":::"
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# Loop through domain list. Download each one and remove commented lines (lines beginning with '# 'or '/') and # blank lines
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for ((i = 0; i < "${#sources[@]}"; i++))
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do
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url=${sources[$i]}
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# Get just the domain from the URL
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domain=$(echo "$url" | cut -d'/' -f3)
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# Save the file as list.#.domain
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saveLocation=$piholeDir/list.$i.$domain.$justDomainsExtension
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activeDomains[$i]=$saveLocation
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agent="Mozilla/10.0"
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echo -n "::: Getting $domain list..."
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# Use a case statement to download lists that need special cURL commands
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# to complete properly and reset the user agent when required
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case "$domain" in
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"adblock.mahakala.is")
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agent='Mozilla/5.0 (X11; Linux x86_64; rv:30.0) Gecko/20100101 Firefox/30.0'
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cmd_ext="-e http://forum.xda-developers.com/"
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;;
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"pgl.yoyo.org")
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cmd_ext="-d mimetype=plaintext -d hostformat=hosts"
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;;
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# Default is a simple request
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*) cmd_ext=""
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esac
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gravity_transport "$url" "$cmd_ext" "$agent"
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done
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}
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# Schwarzchild - aggregate domains to one list and add blacklisted domains
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function gravity_Schwarzchild() {
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echo "::: "
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# Find all active domains and compile them into one file and remove CRs
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echo -n "::: Aggregating list of domains..."
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truncate -s 0 $piholeDir/$matterandlight
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for i in "${activeDomains[@]}"
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do
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cat "$i" | tr -d '\r' >> $piholeDir/$matterandlight
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done
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echo " done!"
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}
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function gravity_Blacklist(){
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# Append blacklist entries if they exist
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echo -n "::: Running blacklist script to update HOSTS file...."
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$blacklistScript -f -nr -q > /dev/null
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numBlacklisted=$(wc -l < "/etc/pihole/blacklist.txt")
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plural=; [[ "$numBlacklisted" != "1" ]] && plural=s
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echo " $numBlacklisted domain${plural} blacklisted!"
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}
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function gravity_Whitelist() {
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echo ":::"
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# Prevent our sources from being pulled into the hole
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plural=; [[ "${sources[@]}" != "1" ]] && plural=s
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echo -n "::: Adding ${#sources[@]} adlist source${plural} to the whitelist..."
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urls=()
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for url in "${sources[@]}"
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do
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tmp=$(echo "$url" | awk -F '/' '{print $3}')
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urls=("${urls[@]}" $tmp)
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done
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echo " done!"
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echo -n "::: Running whitelist script to update HOSTS file...."
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$whitelistScript -f -nr -q "${urls[@]}" > /dev/null
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numWhitelisted=$(wc -l < "/etc/pihole/whitelist.txt")
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plural=; [[ "$numWhitelisted" != "1" ]] && plural=s
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echo " $numWhitelisted domain${plural} whitelisted!"
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}
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function gravity_unique() {
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# Sort and remove duplicates
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echo -n "::: Removing duplicate domains...."
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sort -u $piholeDir/$supernova > $piholeDir/$eventHorizon
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echo " done!"
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numberOf=$(wc -l < $piholeDir/$eventHorizon)
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echo "::: $numberOf unique domains trapped in the event horizon."
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}
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function gravity_hostFormat() {
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# Format domain list as "192.168.x.x domain.com"
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echo "::: Formatting domains into a HOSTS file..."
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# Otherwise, the IP address can be taken directly from the machine, which will happen when the script is run by the user and not the installation script
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IPv4dev=$(ip route get 8.8.8.8 | awk '{for(i=1;i<=NF;i++)if($i~/dev/)print $(i+1)}')
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piholeIPCIDR=$(ip -o -f inet addr show dev "$IPv4dev" | awk '{print $4}' | awk 'END {print}')
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realIP=${piholeIPCIDR%/*}
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# 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
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if [[ -n $piholeIPv6 ]];then
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realIPv6=$(ip -6 route get 2001:4860:4860::8888 | awk -F " " '{ for(i=1;i<=NF;i++) if ($i == "src") print $(i+1) }')
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# Add hostname and dummy domain to the top of gravity.list to make ping result return a friendlier looking domain! Also allows for an easy way to access the Pi-hole admin console (pi.hole/admin)
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echo -e "$realIP $hostname\n$realIPv6 $hostname\n$realIP pi.hole\n$realIPv6 pi.hole" > $piholeDir/$accretionDisc
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cat $piholeDir/$eventHorizon | awk -v ipv4addr="$piholeIP" -v ipv6addr="$piholeIPv6" '{sub(/\r$/,""); print ipv4addr" "$0"\n"ipv6addr" "$0}' >> $piholeDir/$accretionDisc
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else
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# Otherwise, just create gravity.list as normal using IPv4
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# Add hostname and dummy domain to the top of gravity.list to make ping result return a friendlier looking domain! Also allows for an easy way to access the Pi-hole admin console (pi.hole/admin)
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echo -e "$realIP $hostname\n$realIP pi.hole" > $piholeDir/$accretionDisc
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cat $piholeDir/$eventHorizon | awk -v ipv4addr="$piholeIP" '{sub(/\r$/,""); print ipv4addr" "$0}' >> $piholeDir/$accretionDisc
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fi
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# Copy the file over as /etc/pihole/gravity.list so dnsmasq can use it
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cp $piholeDir/$accretionDisc $adList
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}
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# blackbody - remove any remnant files from script processes
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function gravity_blackbody() {
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# Loop through list files
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for file in $piholeDir/*.$justDomainsExtension
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do
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# If list is in active array then leave it (noop) else rm the list
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if [[ " ${activeDomains[@]} " =~ ${file} ]]; then
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:
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else
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rm -f "$file"
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fi
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done
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}
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function gravity_advanced() {
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# Remove comments and print only the domain name
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# Most of the lists downloaded are already in hosts file format but the spacing/formating is not contigious
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# This helps with that and makes it easier to read
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# It also helps with debugging so each stage of the script can be researched more in depth
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echo -n "::: Formatting list of domains to remove comments...."
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awk '($1 !~ /^#/) { if (NF>1) {print $2} else {print $1}}' $piholeDir/$matterandlight | sed -nr -e 's/\.{2,}/./g' -e '/\./p' > $piholeDir/$supernova
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echo " done!"
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numberOf=$(wc -l < $piholeDir/$supernova)
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echo "::: $numberOf domains being pulled in by gravity..."
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gravity_unique
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}
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function gravity_reload() {
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#Clear no longer needed files...
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echo ":::"
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echo -n "::: Cleaning up un-needed files..."
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$SUDO rm $piholeDir/pihole.*.txt
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echo " done!"
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# Reload hosts file
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echo ":::"
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echo -n "::: Refresh lists in dnsmasq..."
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#ensure /etc/dnsmasq.d/01-pihole.conf is pointing at the correct list!
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#First escape forward slashes in the path:
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adList=${adList//\//\\\/}
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#Now replace the line in dnsmasq file
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$SUDO sed -i "s/^addn-hosts.*/addn-hosts=$adList/" /etc/dnsmasq.d/01-pihole.conf
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dnsmasqPid=$(pidof dnsmasq)
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find "$piholeDir" -type f -exec $SUDO chmod 666 {} \;
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if [[ $dnsmasqPid ]]; then
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# service already running - reload config
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$SUDO killall -s HUP dnsmasq
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else
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# service not running, start it up
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$SUDO service dnsmasq start
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fi
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echo " done!"
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}
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$SUDO cp /etc/.pihole/adlists.default /etc/pihole/adlists.default
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gravity_collapse
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gravity_spinup
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gravity_Schwarzchild
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gravity_advanced
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gravity_hostFormat
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gravity_blackbody
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gravity_Whitelist
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gravity_Blacklist
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gravity_reload
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