#!/usr/bin/env bash # Pi-hole: A black hole for Internet advertisements # (c) 2015, 2016 by Jacob Salmela # Network-wide ad blocking via your Raspberry Pi # http://pi-hole.net # Whitelists domains # # 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. if [[ $# = 0 ]]; then helpFunc fi #globals basename=pihole piholeDir=/etc/$basename adList=$piholeDir/gravity.list whitelist=$piholeDir/whitelist.txt reload=true addmode=true force=false verbose=true domList=() domToRemoveList=() piholeIPv6file=/etc/pihole/.useIPv6 # 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%/*} modifyHost=false # After setting defaults, check if there's local overrides if [[ -r $piholeDir/pihole.conf ]];then echo "::: Local calibration requested..." . $piholeDir/pihole.conf 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 $(i+1) }') fi function helpFunc() { echo "::: Immediately whitelists one or more domains in the hosts file" echo ":::" echo "::: Usage: sudo pihole -w domain1 [domain2 ...]" echo ":::" echo "::: Options:" echo "::: -d, --delmode Remove domains from the whitelist" echo "::: -nr, --noreload Update Whitelist without refreshing dnsmasq" echo "::: -f, --force Force updating of the hosts files, even if there are no changes" echo "::: -q, --quiet output is less verbose" echo "::: -h, --help Show this help dialog" echo "::: -l, --list Display your whitelisted domains" exit 1 } function HandleOther(){ #check validity of domain validDomain=$(echo "$1" | perl -ne'print if /\b((?=[a-z0-9-]{1,63}\.)(xn--)?[a-z0-9]+(-[a-z0-9]+)*\.)+[a-z]{2,63}\b/') if [ -z "$validDomain" ]; then echo "::: $1 is not a valid argument or domain name" else domList=("${domList[@]}" $validDomain) fi } function PopWhitelistFile(){ #check whitelist file exists, and if not, create it if [[ ! -f $whitelist ]];then touch $whitelist fi for dom in "${domList[@]}" do if $addmode; then AddDomain "$dom" else RemoveDomain "$dom" fi done } function AddDomain(){ #| sed 's/\./\\./g' bool=false grep -Ex -q "$1" $whitelist || bool=true if $bool; then #domain not found in the whitelist file, add it! if $verbose; then echo -n "::: Adding $1 to $whitelist..." fi echo "$1" >> $whitelist modifyHost=true if $verbose; then echo " done!" fi else if $verbose; then echo "::: $1 already exists in $whitelist, no need to add!" fi fi } function RemoveDomain(){ bool=false grep -Ex -q "$1" $whitelist || bool=true if $bool; then #Domain is not in the whitelist file, no need to Remove if $verbose; then echo "::: $1 is NOT whitelisted! No need to remove" fi else #Domain is in the whitelist file, add to a temporary array and remove from whitelist file #if $verbose; then #echo "::: Un-whitelisting $dom..." #fi domToRemoveList=("${domToRemoveList[@]}" $1) modifyHost=true fi } function ModifyHostFile(){ if $addmode; then #remove domains in from hosts file if [[ -r $whitelist ]];then # Remove whitelist entries numberOf=$(cat $whitelist | sed '/^\s*$/d' | wc -l) plural=; [[ "$numberOf" != "1" ]] && plural=s echo ":::" echo -n "::: Modifying HOSTS file to whitelist $numberOf domain${plural}..." awk -F':' '{print $1}' $whitelist | while read -r line; do echo "$piholeIP $line"; done > /etc/pihole/whitelist.tmp awk -F':' '{print $1}' $whitelist | while read -r line; do echo "$piholeIPv6 $line"; done >> /etc/pihole/whitelist.tmp echo "l" >> /etc/pihole/whitelist.tmp grep -F -x -v -f $piholeDir/whitelist.tmp $adList > $piholeDir/gravity.tmp rm $adList mv $piholeDir/gravity.tmp $adList rm $piholeDir/whitelist.tmp echo " done!" fi else #we need to add the removed domains to the hosts file echo ":::" echo "::: Modifying HOSTS file to un-whitelist domains..." for rdom in "${domToRemoveList[@]}" do if [[ -n $piholeIPv6 ]];then echo -n "::: Un-whitelisting $rdom on IPv4 and IPv6..." echo "$rdom" | awk -v ipv4addr="$piholeIP" -v ipv6addr="$piholeIPv6" '{sub(/\r$/,""); print ipv4addr" "$0"\n"ipv6addr" "$0}' >> $adList echo " done!" else echo -n "::: Un-whitelisting $rdom on IPv4" echo "$rdom" | awk -v ipv4addr="$piholeIP" '{sub(/\r$/,""); print ipv4addr" "$0}' >>$adList echo " done!" fi echo -n "::: Removing $rdom from $whitelist..." echo "$rdom" | sed 's/\./\\./g' | xargs -I {} perl -i -ne'print unless /'{}'(?!.)/;' $whitelist echo " done!" done fi } function Reload() { # Reload hosts file echo ":::" echo -n "::: Refresh lists in dnsmasq..." dnsmasqPid=$(pidof dnsmasq) if [[ $dnsmasqPid ]]; then # service already running - reload config sudo kill -HUP "$dnsmasqPid" else # service not running, start it up sudo service dnsmasq start fi echo " done!" } function DisplayWlist() { verbose=false echo -e " Displaying Gravity Resistant Domains \n" count=1 while IFS= read -r RD do echo "${count}: $RD" count=$((count+1)) done < "$whitelist" } ################################################### for var in "$@" do case "$var" in "-nr"| "--noreload" ) reload=false;; "-d" | "--delmode" ) addmode=false;; "-f" | "--force" ) force=true;; "-q" | "--quiet" ) verbose=false;; "-h" | "--help" ) helpFunc;; "-l" | "--list" ) DisplayWlist;; * ) HandleOther "$var";; esac done PopWhitelistFile if $modifyHost || $force; then ModifyHostFile else if $verbose; then echo ":::" echo "::: No changes need to be made" fi exit 1 fi if $reload; then Reload fi