mirror of
https://github.com/pi-hole/pi-hole.git
synced 2024-11-15 10:43:55 +00:00
528 lines
14 KiB
Bash
Executable file
528 lines
14 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) 2017 Pi-hole, LLC (https://pi-hole.net)
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# Network-wide ad blocking via your own hardware.
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#
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# Generates pihole_debug.log to be used for troubleshooting.
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#
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# This file is copyright under the latest version of the EUPL.
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# Please see LICENSE file for your rights under this license.
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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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DNSMASQCONFDIR="/etc/dnsmasq.d/*"
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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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PIHOLEGITDIR="/etc/.pihole/"
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ADMINGITDIR="/var/www/html/admin/"
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WHITELISTMATCHES="/tmp/whitelistmatches.list"
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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 48 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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source ${VARSFILE}
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### Private functions exist here ###
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log_write() {
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echo "${@}" >&3
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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 ${process}"
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}
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version_check() {
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header_write "Detecting Installed Package Versions:"
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local error_found
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local pi_hole_ver
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local pi_hole_branch
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local pi_hole_commit
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local admin_ver
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local admin_branch
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local admin_commit
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local light_ver
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local php_ver
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local status
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error_found=0
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cd "${PIHOLEGITDIR}" &> /dev/null || \
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{ status="Pi-hole git directory not found."; error_found=1; }
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if git status &> /dev/null; then
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pi_hole_ver=$(git describe --tags --abbrev=0)
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pi_hole_branch=$(git rev-parse --abbrev-ref HEAD)
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pi_hole_commit=$(git describe --long --dirty --tags --always)
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log_echo -r "Pi-hole: ${pi_hole_ver:-Untagged} (${pi_hole_branch:-Detached}:${pi_hole_commit})"
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else
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status=${status:-"Pi-hole repository damaged."}
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error_found=1
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fi
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if [[ "${status}" ]]; then
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log_echo "${status}"
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unset status
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fi
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cd "${ADMINGITDIR}" || \
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{ status="Pi-hole Dashboard git directory not found."; error_found=1; }
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if git status &> /dev/null; then
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admin_ver=$(git describe --tags --abbrev=0)
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admin_branch=$(git rev-parse --abbrev-ref HEAD)
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admin_commit=$(git describe --long --dirty --tags --always)
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log_echo -r "Pi-hole Dashboard: ${admin_ver:-Untagged} (${admin_branch:-Detached}:${admin_commit})"
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else
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status=${status:-"Pi-hole Dashboard repository damaged."}
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error_found=1
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fi
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if [[ "${status}" ]]; then
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log_echo "${status}"
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unset status
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fi
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if light_ver=$(lighttpd -v |& head -n1 | cut -d " " -f1); then
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log_echo -r "${light_ver}"
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else
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log_echo "lighttpd not installed."
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error_found=1
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fi
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if php_ver=$(php -v |& head -n1); then
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log_echo -r "${php_ver}"
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else
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log_echo "PHP not installed."
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error_found=1
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fi
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return "${error_found}"
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}
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dir_check() {
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header_write "Detecting contents of ${1}:"
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for file in $1*; do
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header_write "File ${file} found"
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echo -n "::: Parsing..."
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file_parse "${file}"
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echo "done"
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done
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echo ":::"
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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 ${search_file} ]]; then
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echo -n "::: File exists, parsing..."
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file_parse "${search_file}"
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echo "done"
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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 [[ $IPV6_ADDRESS ]]; then
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ls /proc/net/if_inet6 &>/dev/null
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return 0
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else
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return 1
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fi
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}
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ip_check() {
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local protocol=${1}
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local gravity=${2}
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local ip_addr_list="$(ip -${protocol} addr show dev ${PIHOLE_INTERFACE} | awk -F ' ' '{ for(i=1;i<=NF;i++) if ($i ~ '/^inet/') print $(i+1) }')"
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if [[ -n ${ip_addr_list} ]]; then
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log_write "IPv${protocol} on ${PIHOLE_INTERFACE}"
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log_write "Gravity configured for: ${2:-NOT CONFIGURED}"
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log_write "----"
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log_write "${ip_addr_list}"
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echo "::: IPv${protocol} addresses located on ${PIHOLE_INTERFACE}"
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ip_ping_check ${protocol}
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return $(( 0 + $? ))
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else
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log_echo "No IPv${protocol} found on ${PIHOLE_INTERFACE}"
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return 1
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fi
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}
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ip_ping_check() {
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local protocol=${1}
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local cmd
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if [[ ${protocol} == "6" ]]; then
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cmd="ping6"
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g_addr="2001:4860:4860::8888"
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else
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cmd="ping"
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g_addr="8.8.8.8"
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fi
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local ip_def_gateway=$(ip -${protocol} route | grep default | cut -d ' ' -f 3)
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if [[ -n ${ip_def_gateway} ]]; then
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echo -n "::: Pinging default IPv${protocol} gateway: "
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if ! ping_gateway="$(${cmd} -q -W 3 -c 3 -n ${ip_def_gateway} -I ${PIHOLE_INTERFACE} | tail -n 3)"; then
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echo "Gateway did not respond."
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return 1
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else
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echo "Gateway responded."
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log_write "${ping_gateway}"
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fi
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echo -n "::: Pinging Internet via IPv${protocol}: "
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if ! ping_inet="$(${cmd} -q -W 3 -c 3 -n ${g_addr} -I ${PIHOLE_INTERFACE} | tail -n 3)"; then
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echo "Query did not respond."
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return 1
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else
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echo "Query responded."
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log_write "${ping_inet}"
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fi
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else
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log_echo " No gateway detected."
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fi
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return 0
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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}" "${1}"
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}
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testResolver() {
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local protocol="${1}"
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header_write "Resolver Functions Check (IPv${protocol})"
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local IP="${2}"
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local g_addr
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local l_addr
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local url
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local testurl
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local localdig
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local piholedig
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local remotedig
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if [[ ${protocol} == "6" ]]; then
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g_addr="2001:4860:4860::8888"
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l_addr="::1"
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r_type="AAAA"
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else
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g_addr="8.8.8.8"
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l_addr="127.0.0.1"
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r_type="A"
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fi
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# Find a blocked url that has not been whitelisted.
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url=$(shuf -n 1 "${GRAVITYFILE}" | awk -F ' ' '{ print $2 }')
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testurl="${url:-doubleclick.com}"
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log_write "Resolution of ${testurl} from Pi-hole (${l_addr}):"
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if localdig=$(dig -"${protocol}" "${testurl}" @${l_addr} +short "${r_type}"); then
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log_write "${localdig}"
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else
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log_write "Failed to resolve ${testurl} on Pi-hole (${l_addr})"
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fi
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log_write ""
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log_write "Resolution of ${testurl} from Pi-hole (${IP}):"
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if piholedig=$(dig -"${protocol}" "${testurl}" @"${IP}" +short "${r_type}"); then
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log_write "${piholedig}"
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else
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log_write "Failed to resolve ${testurl} on Pi-hole (${IP})"
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fi
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log_write ""
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log_write "Resolution of ${testurl} from ${g_addr}:"
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if remotedig=$(dig -"${protocol}" "${testurl}" @${g_addr} +short "${r_type}"); then
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log_write "${remotedig:-NXDOMAIN}"
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else
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log_write "Failed to resolve ${testurl} on upstream server ${g_addr}"
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fi
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log_write ""
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}
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testChaos(){
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# Check Pi-hole specific records
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log_write "Pi-hole dnsmasq specific records lookups"
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log_write "Cache Size:"
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log_write $(dig +short chaos txt cachesize.bind)
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log_write "Upstream Servers:"
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log_write $(dig +short chaos txt servers.bind)
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log_write ""
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}
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checkProcesses() {
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header_write "Processes Check"
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echo "::: Logging status of lighttpd, dnsmasq and pihole-FTL..."
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PROCESSES=( lighttpd dnsmasq pihole-FTL )
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for i in "${PROCESSES[@]}"; do
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log_write "Status for ${i} daemon:"
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log_write $(systemctl is-active "${i}")
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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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countdown() {
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local tuvix
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tuvix=${TIMEOUT}
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printf "::: Logging will automatically teminate in %s seconds\n" "${TIMEOUT}"
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while [ $tuvix -ge 1 ]
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do
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printf ":::\t%s seconds left. " "${tuvix}"
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if [[ -z "${WEBCALL}" ]]; then
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printf "\r"
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else
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printf "\n"
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fi
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sleep 5
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tuvix=$(( tuvix - 5 ))
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done
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}
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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 "${PIHOLELOG}" ]; then
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# Dummy process to use for flagging down tail to terminate
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countdown &
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tail -n0 -f --pid=$! "${PIHOLELOG}" >&4
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else
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log_write "No pihole.log file found!"
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printf ":::\tNo pihole.log file found!\n"
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fi
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}
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# Anything to be done after capturing of pihole.log terminates
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finalWork() {
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local tricorder
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echo "::: Finshed debugging!"
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# Ensure the file exists, create if not, clear if exists.
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truncate --size=0 "${DEBUG_LOG}"
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chmod 644 ${DEBUG_LOG}
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chown "$USER":pihole ${DEBUG_LOG}
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# copy working temp file to final log location
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cat /proc/$$/fd/3 >> "${DEBUG_LOG}"
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# Straight dump of tailing the logs, can sanitize later if needed.
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cat /proc/$$/fd/4 >> "${DEBUG_LOG}"
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echo "::: The debug log can be uploaded to tricorder.pi-hole.net for sharing with developers only."
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if [[ "${AUTOMATED}" ]]; then
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echo "::: Debug script running in automated mode, uploading log to tricorder..."
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tricorder=$(cat /var/log/pihole_debug.log | nc tricorder.pi-hole.net 9999)
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else
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read -r -p "::: Would you like to upload the log? [y/N] " response
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case ${response} in
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[yY][eE][sS]|[yY])
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tricorder=$(cat /var/log/pihole_debug.log | nc tricorder.pi-hole.net 9999)
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;;
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*)
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echo "::: Log will NOT be uploaded to tricorder."
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;;
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esac
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fi
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# Check if tricorder.pi-hole.net is reachable and provide token.
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if [ -n "${tricorder}" ]; then
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echo "::: ---=== Your debug token is : ${tricorder} Please make a note of it. ===---"
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echo "::: Contact the Pi-hole team with your token for assistance."
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echo "::: Thank you."
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else
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echo "::: There was an error uploading your debug log."
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echo "::: Please try again or contact the Pi-hole team for assistance."
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fi
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echo "::: A local copy of the Debug log can be found at : /var/log/pihole_debug.log"
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}
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### END FUNCTIONS ###
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# Create temporary file for log
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TEMPLOG=$(mktemp /tmp/pihole_temp.XXXXXX)
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# Open handle 3 for templog
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exec 3>"$TEMPLOG"
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# Delete templog, but allow for addressing via file handle.
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rm "$TEMPLOG"
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# Create temporary file for logdump using file handle 4
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DUMPLOG=$(mktemp /tmp/pihole_temp.XXXXXX)
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exec 4>"$DUMPLOG"
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rm "$DUMPLOG"
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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 6 ${IPV6_ADDRESS}
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ip_check 4 ${IPV4_ADDRESS}
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daemon_check lighttpd http
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daemon_check dnsmasq domain
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daemon_check pihole-FTL 4711
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checkProcesses
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# Check local/IP/Google for IPv4 Resolution
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testResolver 4 "${IPV4_ADDRESS%/*}"
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# If IPv6 enabled, check resolution
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if [[ "${IPV6_ADDRESS}" ]]; then
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testResolver 6 "${IPV6_ADDRESS%/*}"
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fi
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# Poll dnsmasq Pi-hole specific queries
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testChaos
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debugLighttpd
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files_check "${DNSMASQFILE}"
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dir_check "${DNSMASQCONFDIR}"
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files_check "${WHITELISTFILE}"
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files_check "${BLACKLISTFILE}"
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files_check "${ADLISTFILE}"
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header_write "Analyzing gravity.list"
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gravity_length=$(grep -c ^ "${GRAVITYFILE}") \
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&& log_write "${GRAVITYFILE} is ${gravity_length} lines long." \
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|| log_echo "Warning: No gravity.list file found!"
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header_write "Analyzing pihole.log"
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|
|
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pihole_length=$(grep -c ^ "${PIHOLELOG}") \
|
|
&& log_write "${PIHOLELOG} is ${pihole_length} lines long." \
|
|
|| log_echo "Warning: No pihole.log file found!"
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|
|
|
pihole_size=$(du -h "${PIHOLELOG}" | awk '{ print $1 }') \
|
|
&& log_write "${PIHOLELOG} is ${pihole_size}." \
|
|
|| log_echo "Warning: No pihole.log file found!"
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|
|
|
trap finalWork EXIT
|
|
|
|
### Method calls for additional logging ###
|
|
dumpPiHoleLog
|