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378 lines
12 KiB
378 lines
12 KiB
#!/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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helpFunc()
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{
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echo "::: Pull in domains from adlists"
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echo ":::"
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echo "::: Usage: pihole -g"
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echo ":::"
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echo "::: Options:"
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echo "::: -f, --force Force lists to be downloaded, even if they don't need updating."
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echo "::: -h, --help Show this help dialog"
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exit 1
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}
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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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whitelistFile=/etc/pihole/whitelist.txt
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blacklistFile=/etc/pihole/blacklist.txt
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#Source the setupVars from install script for the IP
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setupVars=/etc/pihole/setupVars.conf
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if [[ -f ${setupVars} ]];then
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. /etc/pihole/setupVars.conf
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else
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echo "::: WARNING: /etc/pihole/setupVars.conf missing. Possible installation failure."
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echo "::: Please run 'pihole -r', and choose the 'reconfigure' option to reconfigure."
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exit 1
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fi
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#Remove the /* from the end of the IPv4addr.
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IPv4_address=${IPv4_address%/*}
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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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preEventHorizon=list.preEventHorizon
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eventHorizon=${basename}.2.supernova.txt
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accretionDisc=${basename}.3.accretionDisc.txt
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skipDownload=false
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# Warn users still using pihole.conf that it no longer has any effect (I imagine about 2 people use it)
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if [[ -r ${piholeDir}/pihole.conf ]];then
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echo "::: pihole.conf file no longer supported. Over-rides in this file are ignored."
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fi
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###########################
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# collapse - begin formation of pihole
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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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}
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# patternCheck - check to see if curl downloaded any new files.
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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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mv "$patternBuffer" "$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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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 -L ${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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}
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# spinup - main gravity function
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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]=${saveLocation}
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agent="Mozilla/10.0"
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# Use a case statement to download lists that need special cURL commands
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# to complete properly and reset the user agent when required
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case "$domain" in
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"adblock.mahakala.is")
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agent='Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36'
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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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if [[ "${skipDownload}" == false ]]; then
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echo -n "::: Getting $domain list..."
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gravity_transport "$url" "$cmd_ext" "$agent"
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fi
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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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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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gravity_Blacklist(){
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# Append blacklist entries if they exist
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numBlacklisted=$(wc -l < "${blacklistFile}")
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plural=; [[ "$numBlacklisted" != "1" ]] && plural=s
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echo -n "::: BlackListing $numBlacklisted domain${plural}..."
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cat ${blacklistFile} >> ${piholeDir}/${eventHorizon}
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echo " done!"
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}
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gravity_Whitelist() {
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#${piholeDir}/${eventHorizon})
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echo ":::"
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# Prevent our sources from being pulled into the hole
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plural=; [[ "${sources[@]}" != "1" ]] && plural=s
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echo -n "::: Adding adlist source${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[@]}" ${tmp})
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done
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echo " done!"
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# Ensure adlist domains are in whitelist.txt
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${whitelistScript} -nr -q "${urls[@]}" > /dev/null
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# Remove anything in whitelist.txt from the Event Horizon
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numWhitelisted=$(wc -l < "${whitelistFile}")
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plural=; [[ "$numWhitelisted" != "1" ]] && plural=s
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echo -n "::: Whitelisting $numWhitelisted domain${plural}..."
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grep -F -x -v -f ${whitelistFile} ${piholeDir}/${preEventHorizon} > ${piholeDir}/${eventHorizon}
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echo " done!"
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}
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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} > ${piholeDir}/${preEventHorizon}
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echo " done!"
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numberOf=$(wc -l < ${piholeDir}/${preEventHorizon})
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echo "::: $numberOf unique domains trapped in the event horizon."
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}
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gravity_hostFormat() {
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# Format domain list as "192.168.x.x domain.com"
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echo "::: Formatting domains into a HOSTS file..."
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if [[ -f /etc/hostname ]]; then
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hostname=$(</etc/hostname)
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elif [ -x "$(command -v hostname)" ]; then
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hostname=$(hostname -f)
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else
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echo "::: Error: Unable to determine fully qualified domain name of host"
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fi
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# Check vars from setupVars.conf to see if we're using IPv4, IPv6, Or both.
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if [[ -n "${IPv4_address}" && -n "${IPv6_address}" ]];then
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# Both IPv4 and IPv6
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echo -e "$IPv4_address $hostname\n$IPv6_address $hostname\n$IPv4_address pi.hole\n$IPv6_address pi.hole" > ${piholeDir}/${accretionDisc}
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cat ${piholeDir}/${eventHorizon} | awk -v ipv4addr="$IPv4_address" -v ipv6addr="$IPv6_address" '{sub(/\r$/,""); print ipv4addr" "$0"\n"ipv6addr" "$0}' >> ${piholeDir}/${accretionDisc}
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elif [[ -n "${IPv4_address}" && -z "${IPv6_address}" ]];then
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# Only IPv4
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echo -e "$IPv4_address $hostname\n$IPv4_address pi.hole" > ${piholeDir}/${accretionDisc}
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cat ${piholeDir}/${eventHorizon} | awk -v ipv4addr="$IPv4_address" '{sub(/\r$/,""); print ipv4addr" "$0}' >> ${piholeDir}/${accretionDisc}
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elif [[ -z "${IPv4_address}" && -n "${IPv6_address}" ]];then
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# Only IPv6
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echo -e "$IPv6_address $hostname\n$IPv6_address pi.hole" > ${piholeDir}/${accretionDisc}
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cat ${piholeDir}/${eventHorizon} | awk -v ipv6addr="$IPv6_address" '{sub(/\r$/,""); print ipv6addr" "$0}' >> ${piholeDir}/${accretionDisc}
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elif [[ -z "${IPv4_address}" && -z "${IPv6_address}" ]];then
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echo "::: No IP Values found! Please run 'pihole -r' and choose reconfigure to restore values"
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exit 1
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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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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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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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#Above line does not correctly grab domains where comment is on the same line (e.g 'addomain.com #comment')
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#Add additional awk command to read all lines up to a '#', and then continue as we were
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cat ${piholeDir}/${matterAndLight} | awk -F'#' '{print $1}' | awk '($1 !~ /^#/) { if (NF>1) {print $2} else {print $1}}' | 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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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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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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# sed -i "s/^addn-hosts.*/addn-hosts=$adList/" /etc/dnsmasq.d/01-pihole.conf
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find "$piholeDir" -type f -exec chmod 666 {} \;
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dnsmasqPid=$(pidof dnsmasq)
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if [[ ${dnsmasqPid} ]]; then
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# service already running - reload config
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if [ -x "$(command -v systemctl)" ]; then
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systemctl restart dnsmasq
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else
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service dnsmasq restart
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fi
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else
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# service not running, start it up
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if [ -x "$(command -v systemctl)" ]; then
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systemctl start dnsmasq
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else
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service dnsmasq start
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fi
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fi
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}
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for var in "$@"
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do
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case "$var" in
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"-f" | "--force" ) forceGrav=true;;
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"-h" | "--help" ) helpFunc;;
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"-sd" | "--skip-download" ) skipDownload=true;;
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esac
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done
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if [[ "${forceGrav}" == true ]]; then
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echo -n "::: Deleting exising list cache..."
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rm /etc/pihole/list.*
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echo " done!"
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fi
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#Overwrite adlists.default from /etc/.pihole in case any changes have been made. Changes should be saved in /etc/adlists.list
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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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if [[ "${skipDownload}" == false ]]; then
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gravity_Schwarzchild
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gravity_advanced
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else
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echo "::: Using cached Event Horizon list..."
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numberOf=$(wc -l < ${piholeDir}/${preEventHorizon})
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echo "::: $numberOf unique domains trapped in the event horizon."
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fi
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gravity_Whitelist
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gravity_Blacklist
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gravity_hostFormat
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gravity_blackbody
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gravity_reload
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