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#!/usr/bin/env bash
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# Pi-hole: A black hole for Internet advertisements
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# (c) 2015, 2016 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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# Generates pihole_debug.log to be used for troubleshooting.
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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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set -o pipefail
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######## GLOBAL VARS ########
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VARSFILE="/etc/pihole/setupVars.conf"
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DEBUG_LOG="/var/log/pihole_debug.log"
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DNSMASQFILE="/etc/dnsmasq.conf"
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DNSMASQCONFFILE="/etc/dnsmasq.d/01-pihole.conf"
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LIGHTTPDFILE="/etc/lighttpd/lighttpd.conf"
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LIGHTTPDERRFILE="/var/log/lighttpd/error.log"
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GRAVITYFILE="/etc/pihole/gravity.list"
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WHITELISTFILE="/etc/pihole/whitelist.txt"
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BLACKLISTFILE="/etc/pihole/blacklist.txt"
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ADLISTFILE="/etc/pihole/adlists.list"
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PIHOLELOG="/var/log/pihole.log"
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WHITELISTMATCHES="/tmp/whitelistmatches.list"
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IPV6_READY=false
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TIMEOUT=60
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# Header info and introduction
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cat << EOM
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::: Beginning Pi-hole debug at $(date)!
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:::
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::: This process collects information from your Pi-hole, and optionally uploads
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::: it to a unique and random directory on tricorder.pi-hole.net.
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:::
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::: NOTE: All log files auto-delete after 24 hours and ONLY the Pi-hole developers
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::: can access your data via the given token. We have taken these extra steps to
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::: secure your data and will work to further reduce any personal information gathered.
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:::
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::: Please read and note any issues, and follow any directions advised during this process.
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EOM
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# Ensure the file exists, create if not, clear if exists.
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truncate --size=0 "${DEBUG_LOG}"
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chmod 644 ${DEBUG_LOG}
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chown "$USER":pihole ${DEBUG_LOG}
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source ${VARSFILE}
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### Private functions exist here ###
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log_write() {
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echo "${1}" >> "${DEBUG_LOG}"
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}
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log_echo() {
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case ${1} in
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-n)
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echo -n "::: ${2}"
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log_write "${2}"
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;;
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-r)
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echo "::: ${2}"
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log_write "${2}"
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;;
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-l)
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echo "${2}"
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log_write "${2}"
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;;
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*)
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echo "::: ${1}"
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log_write "${1}"
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esac
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}
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header_write() {
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log_echo ""
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log_echo "${1}"
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log_write ""
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}
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file_parse() {
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while read -r line; do
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if [ ! -z "${line}" ]; then
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[[ "${line}" =~ ^#.*$ || ! "${line}" ]] && continue
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log_write "${line}"
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fi
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done < "${1}"
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log_write ""
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}
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block_parse() {
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log_write "${1}"
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}
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lsof_parse() {
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local user
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local process
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user=$(echo ${1} | cut -f 3 -d ' ' | cut -c 2-)
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process=$(echo ${1} | cut -f 2 -d ' ' | cut -c 2-)
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[[ ${2} -eq ${process} ]] \
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&& echo "::: Correctly configured." \
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|| log_echo "::: Failure: Incorrectly configured daemon."
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log_write "Found user ${user} with process ${process}"
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}
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version_check() {
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header_write "Detecting Installed Package Versions:"
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local error_found
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error_found=0
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local pi_hole_ver="$(cd /etc/.pihole/ && git describe --tags --abbrev=0)" \
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&& log_echo -r "Pi-hole: $pi_hole_ver" || (log_echo "Pi-hole git repository not detected." && error_found=1)
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local admin_ver="$(cd /var/www/html/admin && git describe --tags --abbrev=0)" \
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&& log_echo -r "WebUI: $admin_ver" || (log_echo "Pi-hole Admin Pages git repository not detected." && error_found=1)
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local light_ver="$(lighttpd -v |& head -n1 | cut -d " " -f1)" \
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&& log_echo -r "${light_ver}" || (log_echo "lighttpd not installed." && error_found=1)
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local php_ver="$(php -v |& head -n1)" \
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&& log_echo -r "${php_ver}" || (log_echo "PHP not installed." && error_found=1)
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return "${error_found}"
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}
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files_check() {
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#Check non-zero length existence of ${1}
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header_write "Detecting existence of ${1}:"
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local search_file="${1}"
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if [[ -s ${search_file} ]]; then
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echo "::: File exists"
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file_parse "${search_file}"
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return 0
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else
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log_echo "${1} not found!"
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return 1
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fi
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echo ":::"
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}
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source_file() {
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local file_found=$(files_check "${1}") \
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&& (source "${1}" &> /dev/null && echo "${file_found} and was successfully sourced") \
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|| log_echo -l "${file_found} and could not be sourced"
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}
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distro_check() {
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local soft_fail
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header_write "Detecting installed OS Distribution"
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soft_fail=0
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local distro="$(cat /etc/*release)" && block_parse "${distro}" || (log_echo "Distribution details not found." && soft_fail=1)
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return "${soft_fail}"
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}
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processor_check() {
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header_write "Checking processor variety"
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log_write $(uname -m) && return 0 || return 1
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}
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ipv6_check() {
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# Check if system is IPv6 enabled, for use in other functions
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if [[ $IPv6_address ]]; then
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ls /proc/net/if_inet6 &>/dev/null && IPV6_READY=true
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return 0
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else
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return 1
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fi
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}
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ip_check() {
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header_write "IP Address Information"
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# Get the current interface for Internet traffic
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# Check if IPv6 enabled
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local IPv6_interface
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local IPv4_interface
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ipv6_check && IPv6_interface=${piholeInterface:-$(ip -6 r | grep default | cut -d ' ' -f 5)}
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# If declared in setupVars.conf use it, otherwise defer to default
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# http://stackoverflow.com/questions/2013547/assigning-default-values-to-shell-variables-with-a-single-command-in-bash
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IPv4_interface=${piholeInterface:-$(ip r | grep default | cut -d ' ' -f 5)}
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if [[ IPV6_READY ]]; then
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local IPv6_addr_list="$(ip a | awk -F " " '{ for(i=1;i<=NF;i++) if ($i == "inet6") print $(i+1) }')" \
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&& (log_write "${IPv6_addr_list}" && echo "::: IPv6 addresses located") \
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|| log_echo "No IPv6 addresses found."
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local IPv6_def_gateway=$(ip -6 r | grep default | cut -d ' ' -f 3)
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if [[ $? = 0 ]] && [[ -n ${IPv6_def_gateway} ]]; then
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echo -n "::: Pinging default IPv6 gateway: "
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local IPv6_def_gateway_check="$(ping6 -q -W 3 -c 3 -n "${IPv6_def_gateway}" -I "${IPv6_interface}"| tail -n3)" \
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&& echo "Gateway Responded." \
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|| echo "Gateway did not respond."
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block_parse "${IPv6_def_gateway_check}"
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echo -n "::: Pinging Internet via IPv6: "
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local IPv6_inet_check=$(ping6 -q -W 3 -c 3 -n 2001:4860:4860::8888 -I "${IPv6_interface}"| tail -n3) \
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&& echo "Query responded." \
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|| echo "Query did not respond."
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block_parse "${IPv6_inet_check}"
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else
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log_echo="No IPv6 Gateway Detected"
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fi
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local IPv4_addr_list="$(ip a | awk -F " " '{ for(i=1;i<=NF;i++) if ($i == "inet") print $(i+1) }')" \
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&& (block_parse "${IPv4_addr_list}" && echo "::: IPv4 addresses located")\
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|| log_echo "No IPv4 addresses found."
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local IPv4_def_gateway=$(ip r | grep default | cut -d ' ' -f 3)
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if [[ $? = 0 ]]; then
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echo -n "::: Pinging default IPv4 gateway: "
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local IPv4_def_gateway_check="$(ping -q -w 3 -c 3 -n "${IPv4_def_gateway}" -I "${IPv4_interface}" | tail -n3)" \
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&& echo "Gateway responded." \
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|| echo "Gateway did not respond."
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block_parse "${IPv4_def_gateway_check}"
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echo -n "::: Pinging Internet via IPv4: "
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local IPv4_inet_check="$(ping -q -w 5 -c 3 -n 8.8.8.8 -I "${IPv4_interface}" | tail -n3)" \
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&& echo "Query responded." \
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|| echo "Query did not respond."
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block_parse "${IPv4_inet_check}"
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fi
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fi
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}
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port_check() {
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local lsof_value
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lsof_value=$(lsof -i ${1}:${2} -FcL | tr '\n' ' ') \
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&& lsof_parse "${lsof_value}" "${3}" \
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|| log_echo "Failure: IPv${1} Port not in use"
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}
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daemon_check() {
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# Check for daemon ${1} on port ${2}
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header_write "Daemon Process Information"
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echo "::: Checking ${2} port for ${1} listener."
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if [[ ${IPV6_READY} ]]; then
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port_check 6 "${2}" "${1}"
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fi
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lsof_value=$(lsof -i 4:${2} -FcL | tr '\n' ' ') \
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port_check 4 "${2}" "${1}"
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}
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testResolver() {
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header_write "Resolver Functions Check"
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# Find a blocked url that has not been whitelisted.
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TESTURL="doubleclick.com"
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if [ -s "${WHITELISTMATCHES}" ]; then
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while read -r line; do
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CUTURL=${line#*" "}
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if [ "${CUTURL}" != "Pi-Hole.IsWorking.OK" ]; then
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while read -r line2; do
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CUTURL2=${line2#*" "}
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if [ "${CUTURL}" != "${CUTURL2}" ]; then
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TESTURL="${CUTURL}"
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break 2
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fi
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done < "${WHITELISTMATCHES}"
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fi
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done < "${GRAVITYFILE}"
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fi
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log_write "Resolution of ${TESTURL} from Pi-hole:"
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LOCALDIG=$(dig "${TESTURL}" @127.0.0.1)
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if [[ $? = 0 ]]; then
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log_write "${LOCALDIG}"
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else
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log_write "Failed to resolve ${TESTURL} on Pi-hole"
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fi
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log_write ""
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log_write "Resolution of ${TESTURL} from 8.8.8.8:"
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REMOTEDIG=$(dig "${TESTURL}" @8.8.8.8)
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if [[ $? = 0 ]]; then
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log_write "${REMOTEDIG}"
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else
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log_write "Failed to resolve ${TESTURL} on 8.8.8.8"
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fi
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log_write ""
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log_write "Pi-hole dnsmasq specific records lookups"
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log_write "Cache Size:"
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dig +short chaos txt cachesize.bind >> ${DEBUG_LOG}
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log_write "Upstream Servers:"
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dig +short chaos txt servers.bind >> ${DEBUG_LOG}
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log_write ""
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}
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checkProcesses() {
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header_write "Processes Check"
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echo "::: Logging status of lighttpd and dnsmasq..."
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PROCESSES=( lighttpd dnsmasq )
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for i in "${PROCESSES[@]}"; do
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log_write ""
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log_write "${i}"
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log_write " processes status:"
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systemctl -l status "${i}" >> "${DEBUG_LOG}"
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done
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log_write ""
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}
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debugLighttpd() {
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echo "::: Checking for necessary lighttpd files."
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files_check "${LIGHTTPDFILE}"
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files_check "${LIGHTTPDERRFILE}"
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echo ":::"
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}
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### END FUNCTIONS ###
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# Gather version of required packages / repositories
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version_check || echo "REQUIRED FILES MISSING"
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# Check for newer setupVars storage file
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source_file "/etc/pihole/setupVars.conf"
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# Gather information about the running distribution
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distro_check || echo "Distro Check soft fail"
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# Gather processor type
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processor_check || echo "Processor Check soft fail"
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ip_check
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daemon_check lighttpd http
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daemon_check dnsmasq domain
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checkProcesses
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testResolver
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debugLighttpd
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files_check "${DNSMASQFILE}"
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files_check "${DNSMASQCONFFILE}"
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files_check "${WHITELISTFILE}"
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files_check "${BLACKLISTFILE}"
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files_check "${ADLISTFILE}"
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header_write "Analyzing gravity.list"
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gravity_length=$(wc -l "${GRAVITYFILE}") \
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&& log_write "${GRAVITYFILE} is ${gravity_length} lines long." \
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|| log_echo "Warning: No gravity.list file found!"
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# Continuously append the pihole.log file to the pihole_debug.log file
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dumpPiHoleLog() {
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trap '{ echo -e "\n::: Finishing debug write from interrupt... Quitting!" ; exit 1; }' INT
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echo "::: "
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echo "::: --= User Action Required =--"
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echo -e "::: Try loading a site that you are having trouble with now from a client web browser.. \n:::\t(Press CTRL+C to finish logging.)"
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header_write "pihole.log"
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if [ -e "${PIHOLELOG}" ]; then
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# Dummy process to use for flagging down tail to terminate
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sleep ${TIMEOUT} &
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while true; do
|
|
|
|
tail -n0 -f --pid=$! "${PIHOLELOG}" >> ${DEBUG_LOG}
|
|
|
|
done
|
|
|
|
else
|
|
|
|
log_write "No pihole.log file found!"
|
|
|
|
printf ":::\tNo pihole.log file found!\n"
|
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
|
|
|
# Anything to be done after capturing of pihole.log terminates
|
|
|
|
finalWork() {
|
|
|
|
local tricorder
|
|
|
|
echo "::: Finshed debugging!"
|
|
|
|
echo "::: The debug log can be uploaded to tricorder.pi-hole.net for sharing with developers only."
|
|
|
|
read -r -p "::: Would you like to upload the log? [y/N] " response
|
|
|
|
case ${response} in
|
|
|
|
[yY][eE][sS]|[yY])
|
|
|
|
tricorder=$(cat /var/log/pihole_debug.log | nc tricorder.pi-hole.net 9999)
|
|
|
|
;;
|
|
|
|
*)
|
|
|
|
echo "::: Log will NOT be uploaded to tricorder."
|
|
|
|
;;
|
|
|
|
esac
|
|
|
|
|
|
|
|
# Check if tricorder.pi-hole.net is reachable and provide token.
|
|
|
|
if [ -n "${tricorder}" ]; then
|
|
|
|
echo "::: Your debug token is : ${tricorder}"
|
|
|
|
echo "::: Please contact the Pi-hole team with your token for assistance."
|
|
|
|
echo "::: Thank you."
|
|
|
|
else
|
|
|
|
echo "::: There was an error uploading your debug log."
|
|
|
|
echo "::: Please try again or contact the Pi-hole team for assistance."
|
|
|
|
fi
|
|
|
|
echo "::: A local copy of the Debug log can be found at : /var/log/pihole_debug.log"
|
|
|
|
}
|
|
|
|
|
|
|
|
trap finalWork EXIT
|
|
|
|
|
|
|
|
### Method calls for additional logging ###
|
|
|
|
dumpPiHoleLog
|