#!/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 # Generates pihole_debug.log in /var/log/ to be used for troubleshooting. # # 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. # Nate Brandeburg # nate@ubiquisoft.com # 3/24/2016 ######## GLOBAL VARS ######## DEBUG_LOG="/var/log/pihole_debug.log" DNSMASQFILE="/etc/dnsmasq.conf" PIHOLECONFFILE="/etc/dnsmasq.d/01-pihole.conf" LIGHTTPDFILE="/etc/lighttpd/lighttpd.conf" GRAVITYFILE="/etc/pihole/gravity.list" HOSTSFILE="/etc/hosts" WHITELISTFILE="/etc/pihole/whitelist.txt" BLACKLISTFILE="/etc/pihole/blacklist.txt" ADLISTSFILE="/etc/pihole/adlists.list" PIHOLELOG="/var/log/pihole.log" WHITELISTMATCHES="/tmp/whitelistmatches.list" ######## FIRST CHECK ######## # Must be root to debug if [[ $EUID -eq 0 ]]; then echo "You are root... Beginning debug!" else echo "sudo will be used for debugging." # Check if sudo is actually installed if [[ $(dpkg-query -s sudo) ]]; then export SUDO="sudo" else echo "Please install sudo or run this as root." exit 1 fi fi # Ensure the file exists, create if not, clear if exists. if [ ! -f "$DEBUG_LOG" ]; then $SUDO touch $DEBUG_LOG $SUDO chmod 644 $DEBUG_LOG $SUDO chown "$USER":root $DEBUG_LOG else truncate -s 0 $DEBUG_LOG fi ### Private functions exist here ### function compareWhitelist { if [ ! -f "$WHITELISTMATCHES" ]; then $SUDO touch $WHITELISTMATCHES $SUDO chmod 644 $WHITELISTMATCHES $SUDO chown "$USER":root $WHITELISTMATCHES else truncate -s 0 $WHITELISTMATCHES fi echo "#######################################" >> $DEBUG_LOG echo "######## Whitelist Comparison #########" >> $DEBUG_LOG echo "#######################################" >> $DEBUG_LOG while read -r line; do TMP=$(grep -w ".* $line$" "$GRAVITYFILE") if [ ! -z "$TMP" ]; then echo "$TMP" >> $DEBUG_LOG echo "$TMP" >> $WHITELISTMATCHES fi done < "$WHITELISTFILE" echo >> $DEBUG_LOG } function compareBlacklist { echo "#######################################" >> $DEBUG_LOG echo "######## Blacklist Comparison #########" >> $DEBUG_LOG echo "#######################################" >> $DEBUG_LOG while read -r line; do if [ ! -z "$line" ]; then grep -w ".* $line$" "$GRAVITYFILE" >> $DEBUG_LOG fi done < "$BLACKLISTFILE" echo >> $DEBUG_LOG } function testNslookup { TESTURL="doubleclick.com" echo "#######################################" >> $DEBUG_LOG echo "############ NSLookup Test ############" >> $DEBUG_LOG echo "#######################################" >> $DEBUG_LOG # Find a blocked url that has not been whitelisted. if [ -s "$WHITELISTMATCHES" ]; then while read -r line; do CUTURL=${line#*" "} if [ "$CUTURL" != "Pi-Hole.IsWorking.OK" ]; then while read -r line2; do CUTURL2=${line2#*" "} if [ "$CUTURL" != "$CUTURL2" ]; then TESTURL="$CUTURL" break 2 fi done < "$WHITELISTMATCHES" fi done < "$GRAVITYFILE" fi echo "NSLOOKUP of $TESTURL from PiHole:" >> $DEBUG_LOG nslookup "$TESTURL" >> $DEBUG_LOG echo >> $DEBUG_LOG echo "NSLOOKUP of $TESTURL from 8.8.8.8:" >> $DEBUG_LOG nslookup "$TESTURL" 8.8.8.8 >> $DEBUG_LOG echo >> $DEBUG_LOG } ### Check Pi internet connections ### # Log the IP addresses of this Pi IPADDR=$(ifconfig | perl -nle 's/dr:(\S+)/print $1/e') echo "Writing local IPs to debug log" echo "IP Addresses of this Pi:" >> $DEBUG_LOG echo "$IPADDR" >> $DEBUG_LOG echo >> $DEBUG_LOG # Check if we can connect to the local gateway GATEWAY_CHECK=$(ping -q -w 1 -c 1 "$(ip r | grep default | cut -d ' ' -f 3)" > /dev/null && echo ok || echo error) echo "Gateway check:" >> $DEBUG_LOG echo "$GATEWAY_CHECK" >> $DEBUG_LOG echo >> $DEBUG_LOG # Test the nslookup here compareWhitelist compareBlacklist testNslookup echo "Writing dnsmasq.conf to debug log..." echo "#######################################" >> $DEBUG_LOG echo "############### Dnsmasq ###############" >> $DEBUG_LOG echo "#######################################" >> $DEBUG_LOG if [ -e "$DNSMASQFILE" ] then #cat $DNSMASQFILE >> $DEBUG_LOG while read -r line; do if [ ! -z "$line" ]; then [[ "$line" =~ ^#.*$ ]] && continue echo "$line" >> $DEBUG_LOG fi done < "$DNSMASQFILE" echo >> $DEBUG_LOG else echo "No dnsmasq.conf file found!" >> $DEBUG_LOG echo "No dnsmasq.conf file found!" fi echo "Writing 01-pihole.conf to debug log..." echo "#######################################" >> $DEBUG_LOG echo "########### 01-pihole.conf ############" >> $DEBUG_LOG echo "#######################################" >> $DEBUG_LOG if [ -e "$PIHOLECONFFILE" ] then #cat "$PIHOLECONFFILE" >> $DEBUG_LOG while read -r line; do if [ ! -z "$line" ]; then [[ "$line" =~ ^#.*$ ]] && continue echo "$line" >> $DEBUG_LOG fi done < "$PIHOLECONFFILE" echo >> $DEBUG_LOG else echo "No 01-pihole.conf file found!" >> $DEBUG_LOG echo "No 01-pihole.conf file found" fi echo "Writing lighttpd.conf to debug log..." echo "#######################################" >> $DEBUG_LOG echo "############ lighttpd.conf ############" >> $DEBUG_LOG echo "#######################################" >> $DEBUG_LOG if [ -e "$LIGHTTPDFILE" ] then #cat "$PIHOLECONFFILE" >> $DEBUG_LOG while read -r line; do if [ ! -z "$line" ]; then [[ "$line" =~ ^#.*$ ]] && continue echo "$line" >> $DEBUG_LOG fi done < "$LIGHTTPDFILE" echo >> $DEBUG_LOG else echo "No lighttpd.conf file found!" >> $DEBUG_LOG echo "No lighttpd.conf file found" fi echo "Writing size of gravity.list to debug log..." echo "#######################################" >> $DEBUG_LOG echo "############ gravity.list #############" >> $DEBUG_LOG echo "#######################################" >> $DEBUG_LOG if [ -e "$GRAVITYFILE" ] then wc -l "$GRAVITYFILE" >> $DEBUG_LOG echo >> $DEBUG_LOG else echo "No gravity.list file found!" >> $DEBUG_LOG echo "No gravity.list file found" fi # Write the hostname output to compare against entries in /etc/hosts, which is logged next echo "Hostname of this pihole is: " >> $DEBUG_LOG hostname >> $DEBUG_LOG echo "Writing hosts file to debug log..." echo "#######################################" >> $DEBUG_LOG echo "################ Hosts ################" >> $DEBUG_LOG echo "#######################################" >> $DEBUG_LOG if [ -e "$HOSTSFILE" ] then cat "$HOSTSFILE" >> $DEBUG_LOG echo >> $DEBUG_LOG else echo "No hosts file found!" >> $DEBUG_LOG echo "No hosts file found!" fi ### PiHole application specific logging ### echo "Writing whitelist to debug log..." echo "#######################################" >> $DEBUG_LOG echo "############## Whitelist ##############" >> $DEBUG_LOG echo "#######################################" >> $DEBUG_LOG if [ -e "$WHITELISTFILE" ] then cat "$WHITELISTFILE" >> $DEBUG_LOG echo >> $DEBUG_LOG else echo "No whitelist.txt file found!" >> $DEBUG_LOG echo "No whitelist.txt file found!" fi echo "Writing blacklist to debug log..." echo "#######################################" >> $DEBUG_LOG echo "############## Blacklist ##############" >> $DEBUG_LOG echo "#######################################" >> $DEBUG_LOG if [ -e "$BLACKLISTFILE" ] then cat "$BLACKLISTFILE" >> $DEBUG_LOG echo >> $DEBUG_LOG else echo "No blacklist.txt file found!" >> $DEBUG_LOG echo "No blacklist.txt file found!" fi echo "Writing adlists.list to debug log..." echo "#######################################" >> $DEBUG_LOG echo "############ adlists.list #############" >> $DEBUG_LOG echo "#######################################" >> $DEBUG_LOG if [ -e "$ADLISTSFILE" ] then cat "$ADLISTSFILE" >> $DEBUG_LOG echo >> $DEBUG_LOG else echo "No adlists.list file found!" >> $DEBUG_LOG echo "No adlists.list file found!" fi # Continuously append the pihole.log file to the pihole_debug.log file function dumpPiHoleLog { trap '{ echo -e "\nFinishing debug write from interrupt... Quitting!" ; exit 1; }' INT echo -e "Writing current pihole traffic to debug log...\nTry loading any/all sites that you are having trouble with now... (Press ctrl+C to finish)" echo "#######################################" >> $DEBUG_LOG echo "############# pihole.log ##############" >> $DEBUG_LOG echo "#######################################" >> $DEBUG_LOG if [ -e "$PIHOLELOG" ] then while true; do tail -f "$PIHOLELOG" >> $DEBUG_LOG echo >> $DEBUG_LOG done else echo "No pihole.log file found!" >> $DEBUG_LOG echo "No pihole.log file found!" fi } # Anything to be done after capturing of pihole.log terminates function finalWork { echo "Finshed debugging!" } trap finalWork EXIT ### Method calls for additional logging ### dumpPiHoleLog