mirror of
https://github.com/pi-hole/pi-hole
synced 2024-12-22 06:48:07 +00:00
1464 lines
61 KiB
Bash
Executable File
1464 lines
61 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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# shellcheck source=/dev/null
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# -e option instructs bash to immediately exit if any command [1] has a non-zero exit status
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# -u a reference to any variable you haven't previously defined
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# with the exceptions of $* and $@ - is an error, and causes the program to immediately exit
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# -o pipefail prevents errors in a pipeline from being masked. If any command in a pipeline fails,
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# that return code will be used as the return code of the whole pipeline. By default, the
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# pipeline's return code is that of the last command - even if it succeeds
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set -o pipefail
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#IFS=$'\n\t'
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######## GLOBAL VARS ########
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# These variables would normally be next to the other files
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# but we need them to be first in order to get the colors needed for the script output
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PIHOLE_SCRIPTS_DIRECTORY="/opt/pihole"
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PIHOLE_COLTABLE_FILE="${PIHOLE_SCRIPTS_DIRECTORY}/COL_TABLE"
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# These provide the colors we need for making the log more readable
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if [[ -f ${PIHOLE_COLTABLE_FILE} ]]; then
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source ${PIHOLE_COLTABLE_FILE}
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else
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COL_NC='\e[0m' # No Color
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COL_RED='\e[1;91m'
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COL_GREEN='\e[1;32m'
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COL_YELLOW='\e[1;33m'
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COL_PURPLE='\e[1;35m'
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COL_CYAN='\e[0;36m'
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TICK="[${COL_GREEN}✓${COL_NC}]"
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CROSS="[${COL_RED}✗${COL_NC}]"
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INFO="[i]"
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#OVER="\r\033[K"
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fi
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OBFUSCATED_PLACEHOLDER="<DOMAIN OBFUSCATED>"
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# FAQ URLs for use in showing the debug log
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FAQ_UPDATE_PI_HOLE="${COL_CYAN}https://discourse.pi-hole.net/t/how-do-i-update-pi-hole/249${COL_NC}"
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FAQ_CHECKOUT_COMMAND="${COL_CYAN}https://discourse.pi-hole.net/t/the-pihole-command-with-examples/738#checkout${COL_NC}"
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FAQ_HARDWARE_REQUIREMENTS="${COL_CYAN}https://docs.pi-hole.net/main/prerequisites/${COL_NC}"
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FAQ_HARDWARE_REQUIREMENTS_PORTS="${COL_CYAN}https://docs.pi-hole.net/main/prerequisites/#ports${COL_NC}"
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FAQ_HARDWARE_REQUIREMENTS_FIREWALLD="${COL_CYAN}https://docs.pi-hole.net/main/prerequisites/#firewalld${COL_NC}"
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FAQ_GATEWAY="${COL_CYAN}https://discourse.pi-hole.net/t/why-is-a-default-gateway-important-for-pi-hole/3546${COL_NC}"
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FAQ_ULA="${COL_CYAN}https://discourse.pi-hole.net/t/use-ipv6-ula-addresses-for-pi-hole/2127${COL_NC}"
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FAQ_FTL_COMPATIBILITY="${COL_CYAN}https://github.com/pi-hole/FTL#compatibility-list${COL_NC}"
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FAQ_BAD_ADDRESS="${COL_CYAN}https://discourse.pi-hole.net/t/why-do-i-see-bad-address-at-in-pihole-log/3972${COL_NC}"
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# Other URLs we may use
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FORUMS_URL="${COL_CYAN}https://discourse.pi-hole.net${COL_NC}"
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# Directories required by Pi-hole
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# https://discourse.pi-hole.net/t/what-files-does-pi-hole-use/1684
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CORE_GIT_DIRECTORY="/etc/.pihole"
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CRON_D_DIRECTORY="/etc/cron.d"
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DNSMASQ_D_DIRECTORY="/etc/dnsmasq.d"
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PIHOLE_DIRECTORY="/etc/pihole"
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PIHOLE_SCRIPTS_DIRECTORY="/opt/pihole"
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BIN_DIRECTORY="/usr/local/bin"
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RUN_DIRECTORY="/run"
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LOG_DIRECTORY="/var/log"
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WEB_SERVER_LOG_DIRECTORY="${LOG_DIRECTORY}/lighttpd"
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WEB_SERVER_CONFIG_DIRECTORY="/etc/lighttpd"
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HTML_DIRECTORY="/var/www/html"
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WEB_GIT_DIRECTORY="${HTML_DIRECTORY}/admin"
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#BLOCK_PAGE_DIRECTORY="${HTML_DIRECTORY}/pihole"
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SHM_DIRECTORY="/dev/shm"
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ETC="/etc"
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# Files required by Pi-hole
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# https://discourse.pi-hole.net/t/what-files-does-pi-hole-use/1684
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PIHOLE_CRON_FILE="${CRON_D_DIRECTORY}/pihole"
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WEB_SERVER_CONFIG_FILE="${WEB_SERVER_CONFIG_DIRECTORY}/lighttpd.conf"
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WEB_SERVER_CUSTOM_CONFIG_FILE="${WEB_SERVER_CONFIG_DIRECTORY}/external.conf"
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PIHOLE_INSTALL_LOG_FILE="${PIHOLE_DIRECTORY}/install.log"
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PIHOLE_RAW_BLOCKLIST_FILES="${PIHOLE_DIRECTORY}/list.*"
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PIHOLE_LOCAL_HOSTS_FILE="${PIHOLE_DIRECTORY}/local.list"
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PIHOLE_LOGROTATE_FILE="${PIHOLE_DIRECTORY}/logrotate"
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PIHOLE_SETUP_VARS_FILE="${PIHOLE_DIRECTORY}/setupVars.conf"
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PIHOLE_FTL_CONF_FILE="${PIHOLE_DIRECTORY}/pihole-FTL.conf"
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# Read the value of an FTL config key. The value is printed to stdout.
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#
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# Args:
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# 1. The key to read
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# 2. The default if the setting or config does not exist
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get_ftl_conf_value() {
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local key=$1
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local default=$2
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local value
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# Obtain key=... setting from pihole-FTL.conf
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if [[ -e "$PIHOLE_FTL_CONF_FILE" ]]; then
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# Constructed to return nothing when
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# a) the setting is not present in the config file, or
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# b) the setting is commented out (e.g. "#DBFILE=...")
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value="$(sed -n -e "s/^\\s*$key=\\s*//p" ${PIHOLE_FTL_CONF_FILE})"
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fi
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# Test for missing value. Use default value in this case.
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if [[ -z "$value" ]]; then
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value="$default"
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fi
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echo "$value"
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}
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PIHOLE_GRAVITY_DB_FILE="$(get_ftl_conf_value "GRAVITYDB" "${PIHOLE_DIRECTORY}/gravity.db")"
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PIHOLE_FTL_DB_FILE="$(get_ftl_conf_value "DBFILE" "${PIHOLE_DIRECTORY}/pihole-FTL.db")"
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PIHOLE_COMMAND="${BIN_DIRECTORY}/pihole"
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PIHOLE_COLTABLE_FILE="${BIN_DIRECTORY}/COL_TABLE"
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FTL_PID="${RUN_DIRECTORY}/pihole-FTL.pid"
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FTL_PORT="${RUN_DIRECTORY}/pihole-FTL.port"
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PIHOLE_LOG="${LOG_DIRECTORY}/pihole.log"
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PIHOLE_LOG_GZIPS="${LOG_DIRECTORY}/pihole.log.[0-9].*"
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PIHOLE_DEBUG_LOG="${LOG_DIRECTORY}/pihole_debug.log"
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PIHOLE_FTL_LOG="$(get_ftl_conf_value "LOGFILE" "${LOG_DIRECTORY}/pihole-FTL.log")"
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PIHOLE_WEB_SERVER_ACCESS_LOG_FILE="${WEB_SERVER_LOG_DIRECTORY}/access.log"
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PIHOLE_WEB_SERVER_ERROR_LOG_FILE="${WEB_SERVER_LOG_DIRECTORY}/error.log"
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RESOLVCONF="${ETC}/resolv.conf"
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DNSMASQ_CONF="${ETC}/dnsmasq.conf"
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# An array of operating system "pretty names" that we officially support
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# We can loop through the array at any time to see if it matches a value
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#SUPPORTED_OS=("Raspbian" "Ubuntu" "Fedora" "Debian" "CentOS")
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# Store Pi-hole's processes in an array for easy use and parsing
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PIHOLE_PROCESSES=( "lighttpd" "pihole-FTL" )
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# Store the required directories in an array so it can be parsed through
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#REQUIRED_DIRECTORIES=("${CORE_GIT_DIRECTORY}"
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#"${CRON_D_DIRECTORY}"
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#"${DNSMASQ_D_DIRECTORY}"
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#"${PIHOLE_DIRECTORY}"
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#"${PIHOLE_SCRIPTS_DIRECTORY}"
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#"${BIN_DIRECTORY}"
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#"${RUN_DIRECTORY}"
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#"${LOG_DIRECTORY}"
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#"${WEB_SERVER_LOG_DIRECTORY}"
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#"${WEB_SERVER_CONFIG_DIRECTORY}"
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#"${HTML_DIRECTORY}"
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#"${WEB_GIT_DIRECTORY}"
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#"${BLOCK_PAGE_DIRECTORY}")
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# Store the required directories in an array so it can be parsed through
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REQUIRED_FILES=("${PIHOLE_CRON_FILE}"
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"${WEB_SERVER_CONFIG_FILE}"
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"${WEB_SERVER_CUSTOM_CONFIG_FILE}"
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"${PIHOLE_INSTALL_LOG_FILE}"
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"${PIHOLE_RAW_BLOCKLIST_FILES}"
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"${PIHOLE_LOCAL_HOSTS_FILE}"
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"${PIHOLE_LOGROTATE_FILE}"
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"${PIHOLE_SETUP_VARS_FILE}"
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"${PIHOLE_FTL_CONF_FILE}"
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"${PIHOLE_COMMAND}"
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"${PIHOLE_COLTABLE_FILE}"
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"${FTL_PID}"
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"${FTL_PORT}"
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"${PIHOLE_LOG}"
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"${PIHOLE_LOG_GZIPS}"
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"${PIHOLE_DEBUG_LOG}"
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"${PIHOLE_FTL_LOG}"
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"${PIHOLE_WEB_SERVER_ACCESS_LOG_FILE}"
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"${PIHOLE_WEB_SERVER_ERROR_LOG_FILE}"
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"${RESOLVCONF}"
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"${DNSMASQ_CONF}")
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DISCLAIMER="This process collects information from your Pi-hole, and optionally uploads it to a unique and random directory on tricorder.pi-hole.net.
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The intent of this script is to allow users to self-diagnose their installations. This is accomplished by running tests against our software and providing the user with links to FAQ articles when a problem is detected. Since we are a small team and Pi-hole has been growing steadily, it is our hope that this will help us spend more time on development.
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NOTE: All log files auto-delete after 48 hours and ONLY the Pi-hole developers can access your data via the given token. We have taken these extra steps to secure your data and will work to further reduce any personal information gathered.
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"
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show_disclaimer(){
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log_write "${DISCLAIMER}"
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}
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source_setup_variables() {
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# Display the current test that is running
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log_write "\\n${COL_PURPLE}*** [ INITIALIZING ]${COL_NC} Sourcing setup variables"
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# If the variable file exists,
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if ls "${PIHOLE_SETUP_VARS_FILE}" 1> /dev/null 2>&1; then
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log_write "${INFO} Sourcing ${PIHOLE_SETUP_VARS_FILE}...";
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# source it
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source ${PIHOLE_SETUP_VARS_FILE}
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else
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# If it can't, show an error
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log_write "${PIHOLE_SETUP_VARS_FILE} ${COL_RED}does not exist or cannot be read.${COL_NC}"
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fi
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}
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make_temporary_log() {
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# Create a random temporary file for the log
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TEMPLOG=$(mktemp /tmp/pihole_temp.XXXXXX)
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# Open handle 3 for templog
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# https://stackoverflow.com/questions/18460186/writing-outputs-to-log-file-and-console
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exec 3>"$TEMPLOG"
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# Delete templog, but allow for addressing via file handle
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# This lets us write to the log without having a temporary file on the drive, which
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# is meant to be a security measure so there is not a lingering file on the drive during the debug process
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rm "$TEMPLOG"
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}
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log_write() {
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# echo arguments to both the log and the console
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echo -e "${@}" | tee -a /proc/$$/fd/3
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}
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copy_to_debug_log() {
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# Copy the contents of file descriptor 3 into the debug log
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cat /proc/$$/fd/3 > "${PIHOLE_DEBUG_LOG}"
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}
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initialize_debug() {
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local system_uptime
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# Clear the screen so the debug log is readable
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clear
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show_disclaimer
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# Display that the debug process is beginning
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log_write "${COL_PURPLE}*** [ INITIALIZING ]${COL_NC}"
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# Timestamp the start of the log
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log_write "${INFO} $(date "+%Y-%m-%d:%H:%M:%S") debug log has been initialized."
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# Uptime of the system
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# credits to https://stackoverflow.com/questions/28353409/bash-format-uptime-to-show-days-hours-minutes
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system_uptime=$(uptime | awk -F'( |,|:)+' '{if ($7=="min") m=$6; else {if ($7~/^day/){if ($9=="min") {d=$6;m=$8} else {d=$6;h=$8;m=$9}} else {h=$6;m=$7}}} {print d+0,"days,",h+0,"hours,",m+0,"minutes"}')
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log_write "${INFO} System has been running for ${system_uptime}"
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}
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# This is a function for visually displaying the current test that is being run.
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# Accepts one variable: the name of what is being diagnosed
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# Colors do not show in the dasboard, but the icons do: [i], [✓], and [✗]
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echo_current_diagnostic() {
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# Colors are used for visually distinguishing each test in the output
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# These colors do not show in the GUI, but the formatting will
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log_write "\\n${COL_PURPLE}*** [ DIAGNOSING ]:${COL_NC} ${1}"
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}
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compare_local_version_to_git_version() {
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# The git directory to check
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local git_dir="${1}"
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# The named component of the project (Core or Web)
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local pihole_component="${2}"
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# If we are checking the Core versions,
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if [[ "${pihole_component}" == "Core" ]]; then
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# We need to search for "Pi-hole" when using pihole -v
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local search_term="Pi-hole"
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elif [[ "${pihole_component}" == "Web" ]]; then
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# We need to search for "AdminLTE" so store it in a variable as well
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#shellcheck disable=2034
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local search_term="AdminLTE"
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fi
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# Display what we are checking
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echo_current_diagnostic "${pihole_component} version"
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# Store the error message in a variable in case we want to change and/or reuse it
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local error_msg="git status failed"
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# If the pihole git directory exists,
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if [[ -d "${git_dir}" ]]; then
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# move into it
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cd "${git_dir}" || \
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# If not, show an error
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log_write "${COL_RED}Could not cd into ${git_dir}$COL_NC"
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if git status &> /dev/null; then
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# The current version the user is on
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local remote_version
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remote_version=$(git describe --tags --abbrev=0);
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# What branch they are on
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local remote_branch
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remote_branch=$(git rev-parse --abbrev-ref HEAD);
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# The commit they are on
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local remote_commit
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remote_commit=$(git describe --long --dirty --tags --always)
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# Status of the repo
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local local_status
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local_status=$(git status -s)
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# echo this information out to the user in a nice format
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# If the current version matches what pihole -v produces, the user is up-to-date
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if [[ "${remote_version}" == "$(pihole -v | awk '/${search_term}/ {print $6}' | cut -d ')' -f1)" ]]; then
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log_write "${TICK} ${pihole_component}: ${COL_GREEN}${remote_version}${COL_NC}"
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# If not,
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else
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# echo the current version in yellow, signifying it's something to take a look at, but not a critical error
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# Also add a URL to an FAQ
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log_write "${INFO} ${pihole_component}: ${COL_YELLOW}${remote_version:-Untagged}${COL_NC} (${FAQ_UPDATE_PI_HOLE})"
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fi
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# Print the repo upstreams
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remotes=$(git remote -v)
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log_write "${INFO} Remotes: ${remotes//$'\n'/'\n '}"
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# If the repo is on the master branch, they are on the stable codebase
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if [[ "${remote_branch}" == "master" ]]; then
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# so the color of the text is green
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log_write "${INFO} Branch: ${COL_GREEN}${remote_branch}${COL_NC}"
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# If it is any other branch, they are in a development branch
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else
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# So show that in yellow, signifying it's something to take a look at, but not a critical error
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log_write "${INFO} Branch: ${COL_YELLOW}${remote_branch:-Detached}${COL_NC} (${FAQ_CHECKOUT_COMMAND})"
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fi
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# echo the current commit
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log_write "${INFO} Commit: ${remote_commit}"
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# if `local_status` is non-null, then the repo is not clean, display details here
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if [[ ${local_status} ]]; then
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# Replace new lines in the status with 12 spaces to make the output cleaner
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log_write "${INFO} Status: ${local_status//$'\n'/'\n '}"
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local local_diff
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local_diff=$(git diff)
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if [[ ${local_diff} ]]; then
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log_write "${INFO} Diff: ${local_diff//$'\n'/'\n '}"
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fi
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fi
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# If git status failed,
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else
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# Return an error message
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log_write "${error_msg}"
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# and exit with a non zero code
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return 1
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fi
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else
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# There is no git directory so check if the web interface was disabled
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local setup_vars_web_interface
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setup_vars_web_interface=$(< ${PIHOLE_SETUP_VARS_FILE} grep ^INSTALL_WEB_INTERFACE | cut -d '=' -f2)
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if [[ "${pihole_component}" == "Web" ]] && [[ "${setup_vars_web_interface}" == "false" ]]; then
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log_write "${INFO} ${pihole_component}: Disabled in setupVars.conf via INSTALL_WEB_INTERFACE=false"
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else
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# Return an error message
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log_write "${COL_RED}Directory ${git_dir} doesn't exist${COL_NC}"
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# and exit with a non zero code
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return 1
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fi
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fi
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}
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check_ftl_version() {
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local ftl_name="FTL"
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echo_current_diagnostic "${ftl_name} version"
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# Use the built in command to check FTL's version
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FTL_VERSION=$(pihole-FTL version)
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# Compare the current FTL version to the remote version
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if [[ "${FTL_VERSION}" == "$(pihole -v | awk '/FTL/ {print $6}' | cut -d ')' -f1)" ]]; then
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# If they are the same, FTL is up-to-date
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log_write "${TICK} ${ftl_name}: ${COL_GREEN}${FTL_VERSION}${COL_NC}"
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else
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# If not, show it in yellow, signifying there is an update
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log_write "${TICK} ${ftl_name}: ${COL_YELLOW}${FTL_VERSION}${COL_NC} (${FAQ_UPDATE_PI_HOLE})"
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fi
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}
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# Checks the core version of the Pi-hole codebase
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check_component_versions() {
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# Check the Web version, branch, and commit
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compare_local_version_to_git_version "${CORE_GIT_DIRECTORY}" "Core"
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# Check the Web version, branch, and commit
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compare_local_version_to_git_version "${WEB_GIT_DIRECTORY}" "Web"
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# Check the FTL version
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check_ftl_version
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}
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get_program_version() {
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local program_name="${1}"
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# Create a local variable so this function can be safely reused
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local program_version
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echo_current_diagnostic "${program_name} version"
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# Evaluate the program we are checking, if it is any of the ones below, show the version
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case "${program_name}" in
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"lighttpd") program_version="$(${program_name} -v 2> /dev/null | head -n1 | cut -d '/' -f2 | cut -d ' ' -f1)"
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;;
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"php") program_version="$(${program_name} -v 2> /dev/null | head -n1 | cut -d '-' -f1 | cut -d ' ' -f2)"
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;;
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# If a match is not found, show an error
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*) echo "Unrecognized program";
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esac
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# If the program does not have a version (the variable is empty)
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if [[ -z "${program_version}" ]]; then
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# Display and error
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log_write "${CROSS} ${COL_RED}${program_name} version could not be detected.${COL_NC}"
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else
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# Otherwise, display the version
|
|
log_write "${INFO} ${program_version}"
|
|
fi
|
|
}
|
|
|
|
# These are the most critical dependencies of Pi-hole, so we check for them
|
|
# and their versions, using the functions above.
|
|
check_critical_program_versions() {
|
|
# Use the function created earlier and bundle them into one function that checks all the version numbers
|
|
get_program_version "lighttpd"
|
|
get_program_version "php"
|
|
}
|
|
|
|
os_check() {
|
|
# This function gets a list of supported OS versions from a TXT record at versions.pi-hole.net
|
|
# and determines whether or not the script is running on one of those systems
|
|
local remote_os_domain valid_os valid_version detected_os detected_version cmdResult digReturnCode response
|
|
remote_os_domain=${OS_CHECK_DOMAIN_NAME:-"versions.pi-hole.net"}
|
|
|
|
detected_os=$(grep "\bID\b" /etc/os-release | cut -d '=' -f2 | tr -d '"')
|
|
detected_version=$(grep VERSION_ID /etc/os-release | cut -d '=' -f2 | tr -d '"')
|
|
|
|
cmdResult="$(dig +short -t txt "${remote_os_domain}" @ns1.pi-hole.net 2>&1; echo $?)"
|
|
#Get the return code of the previous command (last line)
|
|
digReturnCode="${cmdResult##*$'\n'}"
|
|
|
|
# Extract dig response
|
|
response="${cmdResult%%$'\n'*}"
|
|
|
|
IFS=" " read -r -a supportedOS < <(echo "${response}" | tr -d '"')
|
|
for distro_and_versions in "${supportedOS[@]}"
|
|
do
|
|
distro_part="${distro_and_versions%%=*}"
|
|
versions_part="${distro_and_versions##*=}"
|
|
|
|
if [[ "${detected_os^^}" =~ ${distro_part^^} ]]; then
|
|
valid_os=true
|
|
IFS="," read -r -a supportedVer <<<"${versions_part}"
|
|
for version in "${supportedVer[@]}"
|
|
do
|
|
if [[ "${detected_version}" =~ $version ]]; then
|
|
valid_version=true
|
|
break
|
|
fi
|
|
done
|
|
break
|
|
fi
|
|
done
|
|
|
|
log_write "${INFO} dig return code: ${digReturnCode}"
|
|
log_write "${INFO} dig response: ${response}"
|
|
|
|
if [ "$valid_os" = true ]; then
|
|
log_write "${TICK} Distro: ${COL_GREEN}${detected_os^}${COL_NC}"
|
|
|
|
if [ "$valid_version" = true ]; then
|
|
log_write "${TICK} Version: ${COL_GREEN}${detected_version}${COL_NC}"
|
|
else
|
|
log_write "${CROSS} Version: ${COL_RED}${detected_version}${COL_NC}"
|
|
log_write "${CROSS} Error: ${COL_RED}${detected_os^} is supported but version ${detected_version} is currently unsupported (${FAQ_HARDWARE_REQUIREMENTS})${COL_NC}"
|
|
fi
|
|
else
|
|
log_write "${CROSS} Distro: ${COL_RED}${detected_os^}${COL_NC}"
|
|
log_write "${CROSS} Error: ${COL_RED}${detected_os^} is not a supported distro (${FAQ_HARDWARE_REQUIREMENTS})${COL_NC}"
|
|
fi
|
|
}
|
|
|
|
diagnose_operating_system() {
|
|
# error message in a variable so we can easily modify it later (or re-use it)
|
|
local error_msg="Distribution unknown -- most likely you are on an unsupported platform and may run into issues."
|
|
# Display the current test that is running
|
|
echo_current_diagnostic "Operating system"
|
|
|
|
# If there is a /etc/*release file, it's probably a supported operating system, so we can
|
|
if ls /etc/*release 1> /dev/null 2>&1; then
|
|
# display the attributes to the user from the function made earlier
|
|
os_check
|
|
else
|
|
# If it doesn't exist, it's not a system we currently support and link to FAQ
|
|
log_write "${CROSS} ${COL_RED}${error_msg}${COL_NC} (${FAQ_HARDWARE_REQUIREMENTS})"
|
|
fi
|
|
}
|
|
|
|
check_selinux() {
|
|
# SELinux is not supported by the Pi-hole
|
|
echo_current_diagnostic "SELinux"
|
|
# Check if a SELinux configuration file exists
|
|
if [[ -f /etc/selinux/config ]]; then
|
|
# If a SELinux configuration file was found, check the default SELinux mode.
|
|
DEFAULT_SELINUX=$(awk -F= '/^SELINUX=/ {print $2}' /etc/selinux/config)
|
|
case "${DEFAULT_SELINUX,,}" in
|
|
enforcing)
|
|
log_write "${CROSS} ${COL_RED}Default SELinux: $DEFAULT_SELINUX${COL_NC}"
|
|
;;
|
|
*) # 'permissive' and 'disabled'
|
|
log_write "${TICK} ${COL_GREEN}Default SELinux: $DEFAULT_SELINUX${COL_NC}";
|
|
;;
|
|
esac
|
|
# Check the current state of SELinux
|
|
CURRENT_SELINUX=$(getenforce)
|
|
case "${CURRENT_SELINUX,,}" in
|
|
enforcing)
|
|
log_write "${CROSS} ${COL_RED}Current SELinux: $CURRENT_SELINUX${COL_NC}"
|
|
;;
|
|
*) # 'permissive' and 'disabled'
|
|
log_write "${TICK} ${COL_GREEN}Current SELinux: $CURRENT_SELINUX${COL_NC}";
|
|
;;
|
|
esac
|
|
else
|
|
log_write "${INFO} ${COL_GREEN}SELinux not detected${COL_NC}";
|
|
fi
|
|
}
|
|
|
|
check_firewalld() {
|
|
# FirewallD ships by default on Fedora/CentOS/RHEL and enabled upon clean install
|
|
# FirewallD is not configured by the installer and is the responsibility of the user
|
|
echo_current_diagnostic "FirewallD"
|
|
# Check if FirewallD service is enabled
|
|
if command -v systemctl &> /dev/null; then
|
|
# get its status via systemctl
|
|
local firewalld_status
|
|
firewalld_status=$(systemctl is-active firewalld)
|
|
log_write "${INFO} ${COL_GREEN}Firewalld service ${firewalld_status}${COL_NC}";
|
|
if [ "${firewalld_status}" == "active" ]; then
|
|
# test common required service ports
|
|
local firewalld_enabled_services
|
|
firewalld_enabled_services=$(firewall-cmd --list-services)
|
|
local firewalld_expected_services=("http" "dns" "dhcp" "dhcpv6")
|
|
for i in "${firewalld_expected_services[@]}"; do
|
|
if [[ "${firewalld_enabled_services}" =~ ${i} ]]; then
|
|
log_write "${TICK} ${COL_GREEN} Allow Service: ${i}${COL_NC}";
|
|
else
|
|
log_write "${CROSS} ${COL_RED} Allow Service: ${i}${COL_NC} (${FAQ_HARDWARE_REQUIREMENTS_FIREWALLD})"
|
|
fi
|
|
done
|
|
# check for custom FTL FirewallD zone
|
|
local firewalld_zones
|
|
firewalld_zones=$(firewall-cmd --get-zones)
|
|
if [[ "${firewalld_zones}" =~ "ftl" ]]; then
|
|
log_write "${TICK} ${COL_GREEN}FTL Custom Zone Detected${COL_NC}";
|
|
# check FTL custom zone interface: lo
|
|
local firewalld_ftl_zone_interfaces
|
|
firewalld_ftl_zone_interfaces=$(firewall-cmd --zone=ftl --list-interfaces)
|
|
if [[ "${firewalld_ftl_zone_interfaces}" =~ "lo" ]]; then
|
|
log_write "${TICK} ${COL_GREEN} Local Interface Detected${COL_NC}";
|
|
else
|
|
log_write "${CROSS} ${COL_RED} Local Interface Not Detected${COL_NC} (${FAQ_HARDWARE_REQUIREMENTS_FIREWALLD})"
|
|
fi
|
|
# check FTL custom zone port: 4711
|
|
local firewalld_ftl_zone_ports
|
|
firewalld_ftl_zone_ports=$(firewall-cmd --zone=ftl --list-ports)
|
|
if [[ "${firewalld_ftl_zone_ports}" =~ "4711/tcp" ]]; then
|
|
log_write "${TICK} ${COL_GREEN} FTL Port 4711/tcp Detected${COL_NC}";
|
|
else
|
|
log_write "${CROSS} ${COL_RED} FTL Port 4711/tcp Not Detected${COL_NC} (${FAQ_HARDWARE_REQUIREMENTS_FIREWALLD})"
|
|
fi
|
|
else
|
|
log_write "${CROSS} ${COL_RED}FTL Custom Zone Not Detected${COL_NC} (${FAQ_HARDWARE_REQUIREMENTS_FIREWALLD})"
|
|
fi
|
|
fi
|
|
else
|
|
log_write "${TICK} ${COL_GREEN}Firewalld service not detected${COL_NC}";
|
|
fi
|
|
}
|
|
|
|
processor_check() {
|
|
echo_current_diagnostic "Processor"
|
|
# Store the processor type in a variable
|
|
PROCESSOR=$(uname -m)
|
|
# If it does not contain a value,
|
|
if [[ -z "${PROCESSOR}" ]]; then
|
|
# we couldn't detect it, so show an error
|
|
PROCESSOR=$(lscpu | awk '/Architecture/ {print $2}')
|
|
log_write "${CROSS} ${COL_RED}${PROCESSOR}${COL_NC} has not been tested with FTL, but may still work: (${FAQ_FTL_COMPATIBILITY})"
|
|
else
|
|
# Check if the architecture is currently supported for FTL
|
|
case "${PROCESSOR}" in
|
|
"amd64" | "x86_64") log_write "${TICK} ${COL_GREEN}${PROCESSOR}${COL_NC}"
|
|
;;
|
|
"armv6l") log_write "${TICK} ${COL_GREEN}${PROCESSOR}${COL_NC}"
|
|
;;
|
|
"armv6") log_write "${TICK} ${COL_GREEN}${PROCESSOR}${COL_NC}"
|
|
;;
|
|
"armv7l") log_write "${TICK} ${COL_GREEN}${PROCESSOR}${COL_NC}"
|
|
;;
|
|
"aarch64") log_write "${TICK} ${COL_GREEN}${PROCESSOR}${COL_NC}"
|
|
;;
|
|
# Otherwise, show the processor type
|
|
*) log_write "${INFO} ${PROCESSOR}";
|
|
esac
|
|
fi
|
|
}
|
|
|
|
disk_usage() {
|
|
local file_system
|
|
local hide
|
|
|
|
echo_current_diagnostic "Disk usage"
|
|
mapfile -t file_system < <(df -h)
|
|
|
|
# Some lines of df might contain sensitive information like usernames and passwords.
|
|
# E.g. curlftpfs filesystems (https://www.looklinux.com/mount-ftp-share-on-linux-using-curlftps/)
|
|
# We are not interested in those lines so we collect keyword, to remove them from the output
|
|
# Additinal keywords can be added, separated by "|"
|
|
hide="curlftpfs"
|
|
|
|
# only show those lines not containg a sensitive phrase
|
|
for line in "${file_system[@]}"; do
|
|
if [[ ! $line =~ $hide ]]; then
|
|
log_write " ${line}"
|
|
fi
|
|
done
|
|
}
|
|
|
|
parse_setup_vars() {
|
|
echo_current_diagnostic "Setup variables"
|
|
# If the file exists,
|
|
if [[ -r "${PIHOLE_SETUP_VARS_FILE}" ]]; then
|
|
# parse it
|
|
parse_file "${PIHOLE_SETUP_VARS_FILE}"
|
|
else
|
|
# If not, show an error
|
|
log_write "${CROSS} ${COL_RED}Could not read ${PIHOLE_SETUP_VARS_FILE}.${COL_NC}"
|
|
fi
|
|
}
|
|
|
|
parse_locale() {
|
|
local pihole_locale
|
|
echo_current_diagnostic "Locale"
|
|
pihole_locale="$(locale)"
|
|
parse_file "${pihole_locale}"
|
|
}
|
|
|
|
detect_ip_addresses() {
|
|
# First argument should be a 4 or a 6
|
|
local protocol=${1}
|
|
# Use ip to show the addresses for the chosen protocol
|
|
# Store the values in an array so they can be looped through
|
|
# Get the lines that are in the file(s) and store them in an array for parsing later
|
|
mapfile -t ip_addr_list < <(ip -"${protocol}" addr show dev "${PIHOLE_INTERFACE}" | awk -F ' ' '{ for(i=1;i<=NF;i++) if ($i ~ '/^inet/') print $(i+1) }')
|
|
|
|
# If there is something in the IP address list,
|
|
if [[ -n ${ip_addr_list[*]} ]]; then
|
|
# Local iterator
|
|
local i
|
|
# Display the protocol and interface
|
|
log_write "${TICK} IPv${protocol} address(es) bound to the ${PIHOLE_INTERFACE} interface:"
|
|
# Since there may be more than one IP address, store them in an array
|
|
for i in "${!ip_addr_list[@]}"; do
|
|
log_write " ${ip_addr_list[$i]}"
|
|
done
|
|
# Print a blank line just for formatting
|
|
log_write ""
|
|
else
|
|
# If there are no IPs detected, explain that the protocol is not configured
|
|
log_write "${CROSS} ${COL_RED}No IPv${protocol} address(es) found on the ${PIHOLE_INTERFACE}${COL_NC} interface.\\n"
|
|
return 1
|
|
fi
|
|
}
|
|
|
|
ping_ipv4_or_ipv6() {
|
|
# Give the first argument a readable name (a 4 or a six should be the argument)
|
|
local protocol="${1}"
|
|
# If the protocol is 6,
|
|
if [[ ${protocol} == "6" ]]; then
|
|
# use ping6
|
|
cmd="ping6"
|
|
# and Google's public IPv6 address
|
|
public_address="2001:4860:4860::8888"
|
|
else
|
|
# Otherwise, just use ping
|
|
cmd="ping"
|
|
# and Google's public IPv4 address
|
|
public_address="8.8.8.8"
|
|
fi
|
|
}
|
|
|
|
ping_gateway() {
|
|
local protocol="${1}"
|
|
ping_ipv4_or_ipv6 "${protocol}"
|
|
# Check if we are using IPv4 or IPv6
|
|
# Find the default gateway using IPv4 or IPv6
|
|
local gateway
|
|
gateway="$(ip -"${protocol}" route | grep default | grep "${PIHOLE_INTERFACE}" | cut -d ' ' -f 3)"
|
|
|
|
# If the gateway variable has a value (meaning a gateway was found),
|
|
if [[ -n "${gateway}" ]]; then
|
|
log_write "${INFO} Default IPv${protocol} gateway: ${gateway}"
|
|
# Let the user know we will ping the gateway for a response
|
|
log_write " * Pinging ${gateway}..."
|
|
# Try to quietly ping the gateway 3 times, with a timeout of 3 seconds, using numeric output only,
|
|
# on the pihole interface, and tail the last three lines of the output
|
|
# If pinging the gateway is not successful,
|
|
if ! ${cmd} -c 1 -W 2 -n "${gateway}" -I "${PIHOLE_INTERFACE}" >/dev/null; then
|
|
# let the user know
|
|
log_write "${CROSS} ${COL_RED}Gateway did not respond.${COL_NC} ($FAQ_GATEWAY)\\n"
|
|
# and return an error code
|
|
return 1
|
|
# Otherwise,
|
|
else
|
|
# show a success
|
|
log_write "${TICK} ${COL_GREEN}Gateway responded.${COL_NC}"
|
|
# and return a success code
|
|
return 0
|
|
fi
|
|
fi
|
|
}
|
|
|
|
ping_internet() {
|
|
local protocol="${1}"
|
|
# Ping a public address using the protocol passed as an argument
|
|
ping_ipv4_or_ipv6 "${protocol}"
|
|
log_write "* Checking Internet connectivity via IPv${protocol}..."
|
|
# Try to ping the address 3 times
|
|
if ! ${cmd} -c 1 -W 2 -n ${public_address} -I "${PIHOLE_INTERFACE}" >/dev/null; then
|
|
# if it's unsuccessful, show an error
|
|
log_write "${CROSS} ${COL_RED}Cannot reach the Internet.${COL_NC}\\n"
|
|
return 1
|
|
else
|
|
# Otherwise, show success
|
|
log_write "${TICK} ${COL_GREEN}Query responded.${COL_NC}\\n"
|
|
return 0
|
|
fi
|
|
}
|
|
|
|
compare_port_to_service_assigned() {
|
|
local service_name
|
|
local expected_service
|
|
local port
|
|
|
|
service_name="${2}"
|
|
expected_service="${1}"
|
|
port="${3}"
|
|
|
|
# If the service is a Pi-hole service, highlight it in green
|
|
if [[ "${service_name}" == "${expected_service}" ]]; then
|
|
log_write "[${COL_GREEN}${port}${COL_NC}] is in use by ${COL_GREEN}${service_name}${COL_NC}"
|
|
# Otherwise,
|
|
else
|
|
# Show the service name in red since it's non-standard
|
|
log_write "[${COL_RED}${port}${COL_NC}] is in use by ${COL_RED}${service_name}${COL_NC} (${FAQ_HARDWARE_REQUIREMENTS_PORTS})"
|
|
fi
|
|
}
|
|
|
|
check_required_ports() {
|
|
echo_current_diagnostic "Ports in use"
|
|
# Since Pi-hole needs 53, 80, and 4711, check what they are being used by
|
|
# so we can detect any issues
|
|
local resolver="pihole-FTL"
|
|
local web_server="lighttpd"
|
|
local ftl="pihole-FTL"
|
|
# Create an array for these ports in use
|
|
ports_in_use=()
|
|
# Sort the addresses and remove duplicates
|
|
while IFS= read -r line; do
|
|
ports_in_use+=( "$line" )
|
|
done < <( lsof -iTCP -sTCP:LISTEN -P -n +c 10 )
|
|
|
|
# Now that we have the values stored,
|
|
for i in "${!ports_in_use[@]}"; do
|
|
# loop through them and assign some local variables
|
|
local service_name
|
|
service_name=$(echo "${ports_in_use[$i]}" | awk '{print $1}')
|
|
local protocol_type
|
|
protocol_type=$(echo "${ports_in_use[$i]}" | awk '{print $5}')
|
|
local port_number
|
|
port_number="$(echo "${ports_in_use[$i]}" | awk '{print $9}')"
|
|
|
|
# Skip the line if it's the titles of the columns the lsof command produces
|
|
if [[ "${service_name}" == COMMAND ]]; then
|
|
continue
|
|
fi
|
|
# Use a case statement to determine if the right services are using the right ports
|
|
case "$(echo "$port_number" | rev | cut -d: -f1 | rev)" in
|
|
53) compare_port_to_service_assigned "${resolver}" "${service_name}" 53
|
|
;;
|
|
80) compare_port_to_service_assigned "${web_server}" "${service_name}" 80
|
|
;;
|
|
4711) compare_port_to_service_assigned "${ftl}" "${service_name}" 4711
|
|
;;
|
|
# If it's not a default port that Pi-hole needs, just print it out for the user to see
|
|
*) log_write "${port_number} ${service_name} (${protocol_type})";
|
|
esac
|
|
done
|
|
}
|
|
|
|
check_networking() {
|
|
# Runs through several of the functions made earlier; we just clump them
|
|
# together since they are all related to the networking aspect of things
|
|
echo_current_diagnostic "Networking"
|
|
detect_ip_addresses "4"
|
|
detect_ip_addresses "6"
|
|
ping_gateway "4"
|
|
ping_gateway "6"
|
|
check_required_ports
|
|
}
|
|
|
|
check_x_headers() {
|
|
# The X-Headers allow us to determine from the command line if the Web
|
|
# lighttpd.conf has a directive to show "X-Pi-hole: A black hole for Internet advertisements."
|
|
# in the header of any Pi-holed domain
|
|
# Similarly, it will show "X-Pi-hole: The Pi-hole Web interface is working!" if you view the header returned
|
|
# when accessing the dashboard (i.e curl -I pi.hole/admin/)
|
|
# server is operating correctly
|
|
echo_current_diagnostic "Dashboard and block page"
|
|
# Use curl -I to get the header and parse out just the X-Pi-hole one
|
|
local block_page
|
|
block_page=$(curl -Is localhost | awk '/X-Pi-hole/' | tr -d '\r')
|
|
# Do it for the dashboard as well, as the header is different than above
|
|
local dashboard
|
|
dashboard=$(curl -Is localhost/admin/ | awk '/X-Pi-hole/' | tr -d '\r')
|
|
# Store what the X-Header should be in variables for comparison later
|
|
local block_page_working
|
|
block_page_working="X-Pi-hole: A black hole for Internet advertisements."
|
|
local dashboard_working
|
|
dashboard_working="X-Pi-hole: The Pi-hole Web interface is working!"
|
|
local full_curl_output_block_page
|
|
full_curl_output_block_page="$(curl -Is localhost)"
|
|
local full_curl_output_dashboard
|
|
full_curl_output_dashboard="$(curl -Is localhost/admin/)"
|
|
# If the X-header found by curl matches what is should be,
|
|
if [[ $block_page == "$block_page_working" ]]; then
|
|
# display a success message
|
|
log_write "$TICK Block page X-Header: ${COL_GREEN}${block_page}${COL_NC}"
|
|
else
|
|
# Otherwise, show an error
|
|
log_write "$CROSS Block page X-Header: ${COL_RED}X-Header does not match or could not be retrieved.${COL_NC}"
|
|
log_write "${COL_RED}${full_curl_output_block_page}${COL_NC}"
|
|
fi
|
|
|
|
# Same logic applies to the dashboard as above, if the X-Header matches what a working system should have,
|
|
if [[ $dashboard == "$dashboard_working" ]]; then
|
|
# then we can show a success
|
|
log_write "$TICK Web interface X-Header: ${COL_GREEN}${dashboard}${COL_NC}"
|
|
else
|
|
# Otherwise, it's a failure since the X-Headers either don't exist or have been modified in some way
|
|
log_write "$CROSS Web interface X-Header: ${COL_RED}X-Header does not match or could not be retrieved.${COL_NC}"
|
|
log_write "${COL_RED}${full_curl_output_dashboard}${COL_NC}"
|
|
fi
|
|
}
|
|
|
|
dig_at() {
|
|
# We need to test if Pi-hole can properly resolve domain names
|
|
# as it is an essential piece of the software
|
|
|
|
# Store the arguments as variables with names
|
|
local protocol="${1}"
|
|
echo_current_diagnostic "Name resolution (IPv${protocol}) using a random blocked domain and a known ad-serving domain"
|
|
# Set more local variables
|
|
# We need to test name resolution locally, via Pi-hole, and via a public resolver
|
|
local local_dig
|
|
local remote_dig
|
|
local interfaces
|
|
local addresses
|
|
# Use a static domain that we know has IPv4 and IPv6 to avoid false positives
|
|
# Sometimes the randomly chosen domains don't use IPv6, or something else is wrong with them
|
|
local remote_url="doubleclick.com"
|
|
|
|
# If the protocol (4 or 6) is 6,
|
|
if [[ ${protocol} == "6" ]]; then
|
|
# Set the IPv6 variables and record type
|
|
local local_address="::1"
|
|
local remote_address="2001:4860:4860::8888"
|
|
local sed_selector="inet6"
|
|
local record_type="AAAA"
|
|
# Otherwise, it should be 4
|
|
else
|
|
# so use the IPv4 values
|
|
local local_address="127.0.0.1"
|
|
local remote_address="8.8.8.8"
|
|
local sed_selector="inet"
|
|
local record_type="A"
|
|
fi
|
|
|
|
# Find a random blocked url that has not been whitelisted.
|
|
# This helps emulate queries to different domains that a user might query
|
|
# It will also give extra assurance that Pi-hole is correctly resolving and blocking domains
|
|
local random_url
|
|
random_url=$(sqlite3 "${PIHOLE_GRAVITY_DB_FILE}" "SELECT domain FROM vw_gravity ORDER BY RANDOM() LIMIT 1")
|
|
|
|
# Next we need to check if Pi-hole can resolve a domain when the query is sent to it's IP address
|
|
# This better emulates how clients will interact with Pi-hole as opposed to above where Pi-hole is
|
|
# just asing itself locally
|
|
# The default timeouts and tries are reduced in case the DNS server isn't working, so the user isn't
|
|
# waiting for too long
|
|
#
|
|
# Turn off history expansion such that the "!" in the sed command cannot do silly things
|
|
set +H
|
|
# Get interfaces
|
|
# sed logic breakdown:
|
|
# / master /d;
|
|
# Removes all interfaces that are slaves of others (e.g. virtual docker interfaces)
|
|
# /UP/!d;
|
|
# Removes all interfaces which are not UP
|
|
# s/^[0-9]*: //g;
|
|
# Removes interface index
|
|
# s/: <.*//g;
|
|
# Removes everything after the interface name
|
|
interfaces="$(ip link show | sed "/ master /d;/UP/!d;s/^[0-9]*: //g;s/: <.*//g;")"
|
|
|
|
while IFS= read -r iface ; do
|
|
# Get addresses of current interface
|
|
# sed logic breakdown:
|
|
# /inet(|6) /!d;
|
|
# Removes all lines from ip a that do not contain either "inet " or "inet6 "
|
|
# s/^.*inet(|6) //g;
|
|
# Removes all leading whitespace as well as the "inet " or "inet6 " string
|
|
# s/\/.*$//g;
|
|
# Removes CIDR and everything thereafter (e.g., scope properties)
|
|
addresses="$(ip address show dev "${iface}" | sed "/${sed_selector} /!d;s/^.*${sed_selector} //g;s/\/.*$//g;")"
|
|
if [ -n "${addresses}" ]; then
|
|
while IFS= read -r local_address ; do
|
|
# Check if Pi-hole can use itself to block a domain
|
|
if local_dig=$(dig +tries=1 +time=2 -"${protocol}" "${random_url}" @"${local_address}" +short "${record_type}"); then
|
|
# If it can, show success
|
|
log_write "${TICK} ${random_url} ${COL_GREEN}is ${local_dig}${COL_NC} on ${COL_CYAN}${iface}${COL_NC} (${COL_CYAN}${local_address}${COL_NC})"
|
|
else
|
|
# Otherwise, show a failure
|
|
log_write "${CROSS} ${COL_RED}Failed to resolve${COL_NC} ${random_url} on ${COL_RED}${iface}${COL_NC} (${COL_RED}${local_address}${COL_NC})"
|
|
fi
|
|
done <<< "${addresses}"
|
|
else
|
|
log_write "${TICK} No IPv${protocol} address available on ${COL_CYAN}${iface}${COL_NC}"
|
|
fi
|
|
done <<< "${interfaces}"
|
|
|
|
# Finally, we need to make sure legitimate queries can out to the Internet using an external, public DNS server
|
|
# We are using the static remote_url here instead of a random one because we know it works with IPv4 and IPv6
|
|
if remote_dig=$(dig +tries=1 +time=2 -"${protocol}" "${remote_url}" @"${remote_address}" +short "${record_type}" | head -n1); then
|
|
# If successful, the real IP of the domain will be returned instead of Pi-hole's IP
|
|
log_write "${TICK} ${remote_url} ${COL_GREEN}is ${remote_dig}${COL_NC} via ${COL_CYAN}a remote, public DNS server${COL_NC} (${remote_address})"
|
|
else
|
|
# Otherwise, show an error
|
|
log_write "${CROSS} ${COL_RED}Failed to resolve${COL_NC} ${remote_url} via ${COL_RED}a remote, public DNS server${COL_NC} (${remote_address})"
|
|
fi
|
|
}
|
|
|
|
process_status(){
|
|
# Check to make sure Pi-hole's services are running and active
|
|
echo_current_diagnostic "Pi-hole processes"
|
|
# Local iterator
|
|
local i
|
|
# For each process,
|
|
for i in "${PIHOLE_PROCESSES[@]}"; do
|
|
# If systemd
|
|
if command -v systemctl &> /dev/null; then
|
|
# get its status via systemctl
|
|
local status_of_process
|
|
status_of_process=$(systemctl is-active "${i}")
|
|
else
|
|
# Otherwise, use the service command and mock the output of `systemctl is-active`
|
|
local status_of_process
|
|
if service "${i}" status | grep -E 'is\srunning' &> /dev/null; then
|
|
status_of_process="active"
|
|
else
|
|
status_of_process="inactive"
|
|
fi
|
|
fi
|
|
# and print it out to the user
|
|
if [[ "${status_of_process}" == "active" ]]; then
|
|
# If it's active, show it in green
|
|
log_write "${TICK} ${COL_GREEN}${i}${COL_NC} daemon is ${COL_GREEN}${status_of_process}${COL_NC}"
|
|
else
|
|
# If it's not, show it in red
|
|
log_write "${CROSS} ${COL_RED}${i}${COL_NC} daemon is ${COL_RED}${status_of_process}${COL_NC}"
|
|
fi
|
|
done
|
|
}
|
|
|
|
ftl_full_status(){
|
|
# if using systemd print the full status of pihole-FTL
|
|
echo_current_diagnostic "Pi-hole-FTL full status"
|
|
local FTL_status
|
|
if command -v systemctl &> /dev/null; then
|
|
FTL_status=$(systemctl status --full --no-pager pihole-FTL.service)
|
|
log_write " ${FTL_status}"
|
|
else
|
|
log_write "${INFO} systemctl: command not found"
|
|
fi
|
|
}
|
|
|
|
make_array_from_file() {
|
|
local filename="${1}"
|
|
# The second argument can put a limit on how many line should be read from the file
|
|
# Since some of the files are so large, this is helpful to limit the output
|
|
local limit=${2}
|
|
# A local iterator for testing if we are at the limit above
|
|
local i=0
|
|
# Set the array to be empty so we can start fresh when the function is used
|
|
local file_content=()
|
|
# If the file is a directory
|
|
if [[ -d "${filename}" ]]; then
|
|
# do nothing since it cannot be parsed
|
|
:
|
|
else
|
|
# Otherwise, read the file line by line
|
|
while IFS= read -r line;do
|
|
# Othwerise, strip out comments and blank lines
|
|
new_line=$(echo "${line}" | sed -e 's/^\s*#.*$//' -e '/^$/d')
|
|
# If the line still has content (a non-zero value)
|
|
if [[ -n "${new_line}" ]]; then
|
|
# Put it into the array
|
|
file_content+=("${new_line}")
|
|
else
|
|
# Otherwise, it's a blank line or comment, so do nothing
|
|
:
|
|
fi
|
|
# Increment the iterator +1
|
|
i=$((i+1))
|
|
# but if the limit of lines we want to see is exceeded
|
|
if [[ -z ${limit} ]]; then
|
|
# do nothing
|
|
:
|
|
elif [[ $i -eq ${limit} ]]; then
|
|
break
|
|
fi
|
|
done < "${filename}"
|
|
# Now the we have made an array of the file's content
|
|
for each_line in "${file_content[@]}"; do
|
|
# Print each line
|
|
# At some point, we may want to check the file line-by-line, so that's the reason for an array
|
|
log_write " ${each_line}"
|
|
done
|
|
fi
|
|
}
|
|
|
|
parse_file() {
|
|
# Set the first argument passed to this function as a named variable for better readability
|
|
local filename="${1}"
|
|
# Put the current Internal Field Separator into another variable so it can be restored later
|
|
OLD_IFS="$IFS"
|
|
# Get the lines that are in the file(s) and store them in an array for parsing later
|
|
local file_info
|
|
if [[ -f "$filename" ]]; then
|
|
#shellcheck disable=SC2016
|
|
IFS=$'\r\n' command eval 'file_info=( $(cat "${filename}") )'
|
|
else
|
|
read -r -a file_info <<< "$filename"
|
|
fi
|
|
# Set a named variable for better readability
|
|
local file_lines
|
|
# For each line in the file,
|
|
for file_lines in "${file_info[@]}"; do
|
|
if [[ -n "${file_lines}" ]]; then
|
|
# don't include the Web password hash
|
|
[[ "${file_lines}" =~ ^\#.*$ || ! "${file_lines}" || "${file_lines}" == "WEBPASSWORD="* ]] && continue
|
|
# otherwise, display the lines of the file
|
|
log_write " ${file_lines}"
|
|
fi
|
|
done
|
|
# Set the IFS back to what it was
|
|
IFS="$OLD_IFS"
|
|
}
|
|
|
|
check_name_resolution() {
|
|
# Check name resolution from localhost, Pi-hole's IP, and Google's name severs
|
|
# using the function we created earlier
|
|
dig_at 4
|
|
dig_at 6
|
|
}
|
|
|
|
# This function can check a directory exists
|
|
# Pi-hole has files in several places, so we will reuse this function
|
|
dir_check() {
|
|
# Set the first argument passed to this function as a named variable for better readability
|
|
local directory="${1}"
|
|
# Display the current test that is running
|
|
echo_current_diagnostic "contents of ${COL_CYAN}${directory}${COL_NC}"
|
|
# For each file in the directory,
|
|
for filename in ${directory}; do
|
|
# check if exists first; if it does,
|
|
if ls "${filename}" 1> /dev/null 2>&1; then
|
|
# do nothing
|
|
:
|
|
else
|
|
# Otherwise, show an error
|
|
log_write "${COL_RED}${directory} does not exist.${COL_NC}"
|
|
fi
|
|
done
|
|
}
|
|
|
|
list_files_in_dir() {
|
|
# Set the first argument passed to this function as a named variable for better readability
|
|
local dir_to_parse="${1}"
|
|
# Store the files found in an array
|
|
mapfile -t files_found < <(ls "${dir_to_parse}")
|
|
# For each file in the array,
|
|
for each_file in "${files_found[@]}"; do
|
|
if [[ -d "${dir_to_parse}/${each_file}" ]]; then
|
|
# If it's a directory, do nothing
|
|
:
|
|
elif [[ "${dir_to_parse}/${each_file}" == "${PIHOLE_DEBUG_LOG}" ]] || \
|
|
[[ "${dir_to_parse}/${each_file}" == "${PIHOLE_RAW_BLOCKLIST_FILES}" ]] || \
|
|
[[ "${dir_to_parse}/${each_file}" == "${PIHOLE_INSTALL_LOG_FILE}" ]] || \
|
|
[[ "${dir_to_parse}/${each_file}" == "${PIHOLE_SETUP_VARS_FILE}" ]] || \
|
|
[[ "${dir_to_parse}/${each_file}" == "${PIHOLE_LOG}" ]] || \
|
|
[[ "${dir_to_parse}/${each_file}" == "${PIHOLE_WEB_SERVER_ACCESS_LOG_FILE}" ]] || \
|
|
[[ "${dir_to_parse}/${each_file}" == "${PIHOLE_LOG_GZIPS}" ]]; then
|
|
:
|
|
elif [[ "${dir_to_parse}" == "${SHM_DIRECTORY}" ]]; then
|
|
# SHM file - we do not want to see the content, but we want to see the files and their sizes
|
|
log_write "$(ls -lhd "${dir_to_parse}"/"${each_file}")"
|
|
elif [[ "${dir_to_parse}" == "${DNSMASQ_D_DIRECTORY}" ]]; then
|
|
# in case of the dnsmasq directory inlcuede all files in the debug output
|
|
log_write "\\n${COL_GREEN}$(ls -lhd "${dir_to_parse}"/"${each_file}")${COL_NC}"
|
|
make_array_from_file "${dir_to_parse}/${each_file}"
|
|
else
|
|
# Then, parse the file's content into an array so each line can be analyzed if need be
|
|
for i in "${!REQUIRED_FILES[@]}"; do
|
|
if [[ "${dir_to_parse}/${each_file}" == "${REQUIRED_FILES[$i]}" ]]; then
|
|
# display the filename
|
|
log_write "\\n${COL_GREEN}$(ls -lhd "${dir_to_parse}"/"${each_file}")${COL_NC}"
|
|
# Check if the file we want to view has a limit (because sometimes we just need a little bit of info from the file, not the entire thing)
|
|
case "${dir_to_parse}/${each_file}" in
|
|
# If it's Web server error log, give the first and last 25 lines
|
|
"${PIHOLE_WEB_SERVER_ERROR_LOG_FILE}") head_tail_log "${dir_to_parse}/${each_file}" 25
|
|
;;
|
|
# Same for the FTL log
|
|
"${PIHOLE_FTL_LOG}") head_tail_log "${dir_to_parse}/${each_file}" 35
|
|
;;
|
|
# parse the file into an array in case we ever need to analyze it line-by-line
|
|
*) make_array_from_file "${dir_to_parse}/${each_file}";
|
|
esac
|
|
else
|
|
# Otherwise, do nothing since it's not a file needed for Pi-hole so we don't care about it
|
|
:
|
|
fi
|
|
done
|
|
fi
|
|
done
|
|
}
|
|
|
|
show_content_of_files_in_dir() {
|
|
# Set a local variable for better readability
|
|
local directory="${1}"
|
|
# Check if the directory exists
|
|
dir_check "${directory}"
|
|
# if it does, list the files in it
|
|
list_files_in_dir "${directory}"
|
|
}
|
|
|
|
show_content_of_pihole_files() {
|
|
# Show the content of the files in each of Pi-hole's folders
|
|
show_content_of_files_in_dir "${PIHOLE_DIRECTORY}"
|
|
show_content_of_files_in_dir "${DNSMASQ_D_DIRECTORY}"
|
|
show_content_of_files_in_dir "${WEB_SERVER_CONFIG_DIRECTORY}"
|
|
show_content_of_files_in_dir "${CRON_D_DIRECTORY}"
|
|
show_content_of_files_in_dir "${WEB_SERVER_LOG_DIRECTORY}"
|
|
show_content_of_files_in_dir "${LOG_DIRECTORY}"
|
|
show_content_of_files_in_dir "${SHM_DIRECTORY}"
|
|
show_content_of_files_in_dir "${ETC}"
|
|
}
|
|
|
|
head_tail_log() {
|
|
# The file being processed
|
|
local filename="${1}"
|
|
# The number of lines to use for head and tail
|
|
local qty="${2}"
|
|
local head_line
|
|
local tail_line
|
|
# Put the current Internal Field Separator into another variable so it can be restored later
|
|
OLD_IFS="$IFS"
|
|
# Get the lines that are in the file(s) and store them in an array for parsing later
|
|
IFS=$'\r\n'
|
|
local log_head=()
|
|
mapfile -t log_head < <(head -n "${qty}" "${filename}")
|
|
log_write " ${COL_CYAN}-----head of $(basename "${filename}")------${COL_NC}"
|
|
for head_line in "${log_head[@]}"; do
|
|
log_write " ${head_line}"
|
|
done
|
|
log_write ""
|
|
local log_tail=()
|
|
mapfile -t log_tail < <(tail -n "${qty}" "${filename}")
|
|
log_write " ${COL_CYAN}-----tail of $(basename "${filename}")------${COL_NC}"
|
|
for tail_line in "${log_tail[@]}"; do
|
|
log_write " ${tail_line}"
|
|
done
|
|
# Set the IFS back to what it was
|
|
IFS="$OLD_IFS"
|
|
}
|
|
|
|
show_db_entries() {
|
|
local title="${1}"
|
|
local query="${2}"
|
|
local widths="${3}"
|
|
|
|
echo_current_diagnostic "${title}"
|
|
|
|
OLD_IFS="$IFS"
|
|
IFS=$'\r\n'
|
|
local entries=()
|
|
mapfile -t entries < <(\
|
|
sqlite3 "${PIHOLE_GRAVITY_DB_FILE}" \
|
|
-cmd ".headers on" \
|
|
-cmd ".mode column" \
|
|
-cmd ".width ${widths}" \
|
|
"${query}"\
|
|
)
|
|
|
|
for line in "${entries[@]}"; do
|
|
log_write " ${line}"
|
|
done
|
|
|
|
IFS="$OLD_IFS"
|
|
}
|
|
|
|
show_FTL_db_entries() {
|
|
local title="${1}"
|
|
local query="${2}"
|
|
local widths="${3}"
|
|
|
|
echo_current_diagnostic "${title}"
|
|
|
|
OLD_IFS="$IFS"
|
|
IFS=$'\r\n'
|
|
local entries=()
|
|
mapfile -t entries < <(\
|
|
sqlite3 "${PIHOLE_FTL_DB_FILE}" \
|
|
-cmd ".headers on" \
|
|
-cmd ".mode column" \
|
|
-cmd ".width ${widths}" \
|
|
"${query}"\
|
|
)
|
|
|
|
for line in "${entries[@]}"; do
|
|
log_write " ${line}"
|
|
done
|
|
|
|
IFS="$OLD_IFS"
|
|
}
|
|
|
|
check_dhcp_servers() {
|
|
echo_current_diagnostic "Discovering active DHCP servers (takes 10 seconds)"
|
|
|
|
OLD_IFS="$IFS"
|
|
IFS=$'\n'
|
|
local entries=()
|
|
mapfile -t entries < <(pihole-FTL dhcp-discover)
|
|
|
|
for line in "${entries[@]}"; do
|
|
log_write " ${line}"
|
|
done
|
|
|
|
IFS="$OLD_IFS"
|
|
}
|
|
|
|
show_groups() {
|
|
show_db_entries "Groups" "SELECT id,CASE enabled WHEN '0' THEN ' 0' WHEN '1' THEN ' 1' ELSE enabled END enabled,name,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,description FROM \"group\"" "4 7 50 19 19 50"
|
|
}
|
|
|
|
show_adlists() {
|
|
show_db_entries "Adlists" "SELECT id,CASE enabled WHEN '0' THEN ' 0' WHEN '1' THEN ' 1' ELSE enabled END enabled,GROUP_CONCAT(adlist_by_group.group_id) group_ids,address,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,comment FROM adlist LEFT JOIN adlist_by_group ON adlist.id = adlist_by_group.adlist_id GROUP BY id;" "5 7 12 100 19 19 50"
|
|
}
|
|
|
|
show_domainlist() {
|
|
show_db_entries "Domainlist (0/1 = exact white-/blacklist, 2/3 = regex white-/blacklist)" "SELECT id,CASE type WHEN '0' THEN '0 ' WHEN '1' THEN ' 1 ' WHEN '2' THEN ' 2 ' WHEN '3' THEN ' 3' ELSE type END type,CASE enabled WHEN '0' THEN ' 0' WHEN '1' THEN ' 1' ELSE enabled END enabled,GROUP_CONCAT(domainlist_by_group.group_id) group_ids,domain,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,comment FROM domainlist LEFT JOIN domainlist_by_group ON domainlist.id = domainlist_by_group.domainlist_id GROUP BY id;" "5 4 7 12 100 19 19 50"
|
|
}
|
|
|
|
show_clients() {
|
|
show_db_entries "Clients" "SELECT id,GROUP_CONCAT(client_by_group.group_id) group_ids,ip,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,comment FROM client LEFT JOIN client_by_group ON client.id = client_by_group.client_id GROUP BY id;" "4 12 100 19 19 50"
|
|
}
|
|
|
|
show_messages() {
|
|
show_FTL_db_entries "Pi-hole diagnosis messages" "SELECT id,datetime(timestamp,'unixepoch','localtime') timestamp,type,message,blob1,blob2,blob3,blob4,blob5 FROM message;" "4 19 20 60 20 20 20 20 20"
|
|
}
|
|
|
|
analyze_gravity_list() {
|
|
echo_current_diagnostic "Gravity Database"
|
|
|
|
local gravity_permissions
|
|
gravity_permissions=$(ls -lhd "${PIHOLE_GRAVITY_DB_FILE}")
|
|
log_write "${COL_GREEN}${gravity_permissions}${COL_NC}"
|
|
|
|
show_db_entries "Info table" "SELECT property,value FROM info" "20 40"
|
|
gravity_updated_raw="$(sqlite3 "${PIHOLE_GRAVITY_DB_FILE}" "SELECT value FROM info where property = 'updated'")"
|
|
gravity_updated="$(date -d @"${gravity_updated_raw}")"
|
|
log_write " Last gravity run finished at: ${COL_CYAN}${gravity_updated}${COL_NC}"
|
|
log_write ""
|
|
|
|
OLD_IFS="$IFS"
|
|
IFS=$'\r\n'
|
|
local gravity_sample=()
|
|
mapfile -t gravity_sample < <(sqlite3 "${PIHOLE_GRAVITY_DB_FILE}" "SELECT domain FROM vw_gravity LIMIT 10")
|
|
log_write " ${COL_CYAN}----- First 10 Gravity Domains -----${COL_NC}"
|
|
|
|
for line in "${gravity_sample[@]}"; do
|
|
log_write " ${line}"
|
|
done
|
|
|
|
log_write ""
|
|
IFS="$OLD_IFS"
|
|
}
|
|
|
|
obfuscated_pihole_log() {
|
|
local pihole_log=("$@")
|
|
local line
|
|
local error_to_check_for
|
|
local line_to_obfuscate
|
|
local obfuscated_line
|
|
for line in "${pihole_log[@]}"; do
|
|
# A common error in the pihole.log is when there is a non-hosts formatted file
|
|
# that the DNS server is attempting to read. Since it's not formatted
|
|
# correctly, there will be an entry for "bad address at line n"
|
|
# So we can check for that here and highlight it in red so the user can see it easily
|
|
error_to_check_for=$(echo "${line}" | grep 'bad address at')
|
|
# Some users may not want to have the domains they visit sent to us
|
|
# To that end, we check for lines in the log that would contain a domain name
|
|
line_to_obfuscate=$(echo "${line}" | grep ': query\|: forwarded\|: reply')
|
|
# If the variable contains a value, it found an error in the log
|
|
if [[ -n ${error_to_check_for} ]]; then
|
|
# So we can print it in red to make it visible to the user
|
|
log_write " ${CROSS} ${COL_RED}${line}${COL_NC} (${FAQ_BAD_ADDRESS})"
|
|
else
|
|
# If the variable does not a value (the current default behavior), so do not obfuscate anything
|
|
if [[ -z ${OBFUSCATE} ]]; then
|
|
log_write " ${line}"
|
|
# Othwerise, a flag was passed to this command to obfuscate domains in the log
|
|
else
|
|
# So first check if there are domains in the log that should be obfuscated
|
|
if [[ -n ${line_to_obfuscate} ]]; then
|
|
# If there are, we need to use awk to replace only the domain name (the 6th field in the log)
|
|
# so we substitute the domain for the placeholder value
|
|
obfuscated_line=$(echo "${line_to_obfuscate}" | awk -v placeholder="${OBFUSCATED_PLACEHOLDER}" '{sub($6,placeholder); print $0}')
|
|
log_write " ${obfuscated_line}"
|
|
else
|
|
log_write " ${line}"
|
|
fi
|
|
fi
|
|
fi
|
|
done
|
|
}
|
|
|
|
analyze_pihole_log() {
|
|
echo_current_diagnostic "Pi-hole log"
|
|
local pihole_log_head=()
|
|
local pihole_log_tail=()
|
|
local pihole_log_permissions
|
|
local logging_enabled
|
|
|
|
logging_enabled=$(grep -c "^log-queries" /etc/dnsmasq.d/01-pihole.conf)
|
|
if [[ "${logging_enabled}" == "0" ]]; then
|
|
# Inform user that logging has been disabled and pihole.log does not contain queries
|
|
log_write "${INFO} Query logging is disabled"
|
|
log_write ""
|
|
fi
|
|
# Put the current Internal Field Separator into another variable so it can be restored later
|
|
OLD_IFS="$IFS"
|
|
# Get the lines that are in the file(s) and store them in an array for parsing later
|
|
IFS=$'\r\n'
|
|
pihole_log_permissions=$(ls -lhd "${PIHOLE_LOG}")
|
|
log_write "${COL_GREEN}${pihole_log_permissions}${COL_NC}"
|
|
mapfile -t pihole_log_head < <(head -n 20 ${PIHOLE_LOG})
|
|
log_write " ${COL_CYAN}-----head of $(basename ${PIHOLE_LOG})------${COL_NC}"
|
|
obfuscated_pihole_log "${pihole_log_head[@]}"
|
|
log_write ""
|
|
mapfile -t pihole_log_tail < <(tail -n 20 ${PIHOLE_LOG})
|
|
log_write " ${COL_CYAN}-----tail of $(basename ${PIHOLE_LOG})------${COL_NC}"
|
|
obfuscated_pihole_log "${pihole_log_tail[@]}"
|
|
log_write ""
|
|
# Set the IFS back to what it was
|
|
IFS="$OLD_IFS"
|
|
}
|
|
|
|
curl_to_tricorder() {
|
|
# Users can submit their debug logs using curl (encrypted)
|
|
log_write " * Using ${COL_GREEN}curl${COL_NC} for transmission."
|
|
# transmit the log via TLS and store the token returned in a variable
|
|
tricorder_token=$(curl --silent --fail --show-error --upload-file ${PIHOLE_DEBUG_LOG} https://tricorder.pi-hole.net 2>&1)
|
|
if [[ "${tricorder_token}" != "https://tricorder.pi-hole.net/"* ]]; then
|
|
log_write " * ${COL_GREEN}curl${COL_NC} failed, contact Pi-hole support for assistance."
|
|
# Log curl error (if available)
|
|
if [ -n "${tricorder_token}" ]; then
|
|
log_write " * Error message: ${COL_RED}${tricorder_token}${COL_NC}\\n"
|
|
tricorder_token=""
|
|
fi
|
|
fi
|
|
}
|
|
|
|
|
|
upload_to_tricorder() {
|
|
local username="pihole"
|
|
# Set the permissions and owner
|
|
chmod 644 ${PIHOLE_DEBUG_LOG}
|
|
chown "$USER":"${username}" ${PIHOLE_DEBUG_LOG}
|
|
|
|
# Let the user know debugging is complete with something strikingly visual
|
|
log_write ""
|
|
log_write "${COL_PURPLE}********************************************${COL_NC}"
|
|
log_write "${COL_PURPLE}********************************************${COL_NC}"
|
|
log_write "${TICK} ${COL_GREEN}** FINISHED DEBUGGING! **${COL_NC}\\n"
|
|
|
|
# Provide information on what they should do with their token
|
|
log_write " * The debug log can be uploaded to tricorder.pi-hole.net for sharing with developers only."
|
|
|
|
# If pihole -d is running automatically (usually through the dashboard)
|
|
if [[ "${AUTOMATED}" ]]; then
|
|
# let the user know
|
|
log_write "${INFO} Debug script running in automated mode"
|
|
# and then decide again which tool to use to submit it
|
|
curl_to_tricorder
|
|
# If we're not running in automated mode,
|
|
else
|
|
echo ""
|
|
# give the user a choice of uploading it or not
|
|
# Users can review the log file locally (or the output of the script since they are the same) and try to self-diagnose their problem
|
|
read -r -p "[?] Would you like to upload the log? [y/N] " response
|
|
case ${response} in
|
|
# If they say yes, run our function for uploading the log
|
|
[yY][eE][sS]|[yY]) curl_to_tricorder;;
|
|
# If they choose no, just exit out of the script
|
|
*) log_write " * Log will ${COL_GREEN}NOT${COL_NC} be uploaded to tricorder.\\n * A local copy of the debug log can be found at: ${COL_CYAN}${PIHOLE_DEBUG_LOG}${COL_NC}\\n";exit;
|
|
esac
|
|
fi
|
|
# Check if tricorder.pi-hole.net is reachable and provide token
|
|
# along with some additional useful information
|
|
if [[ -n "${tricorder_token}" ]]; then
|
|
# Again, try to make this visually striking so the user realizes they need to do something with this information
|
|
# Namely, provide the Pi-hole devs with the token
|
|
log_write ""
|
|
log_write "${COL_PURPLE}*****************************************************************${COL_NC}"
|
|
log_write "${COL_PURPLE}*****************************************************************${COL_NC}\\n"
|
|
log_write "${TICK} Your debug token is: ${COL_GREEN}${tricorder_token}${COL_NC}"
|
|
log_write "${INFO}${COL_RED} Logs are deleted 48 hours after upload.${COL_NC}\\n"
|
|
log_write "${COL_PURPLE}*****************************************************************${COL_NC}"
|
|
log_write "${COL_PURPLE}*****************************************************************${COL_NC}"
|
|
log_write ""
|
|
log_write " * Provide the token above to the Pi-hole team for assistance at ${FORUMS_URL}"
|
|
|
|
# If no token was generated
|
|
else
|
|
# Show an error and some help instructions
|
|
log_write "${CROSS} ${COL_RED}There was an error uploading your debug log.${COL_NC}"
|
|
log_write " * Please try again or contact the Pi-hole team for assistance."
|
|
fi
|
|
# Finally, show where the log file is no matter the outcome of the function so users can look at it
|
|
log_write " * A local copy of the debug log can be found at: ${COL_CYAN}${PIHOLE_DEBUG_LOG}${COL_NC}\\n"
|
|
}
|
|
|
|
# Run through all the functions we made
|
|
make_temporary_log
|
|
initialize_debug
|
|
# setupVars.conf needs to be sourced before the networking so the values are
|
|
# available to the other functions
|
|
source_setup_variables
|
|
check_component_versions
|
|
check_critical_program_versions
|
|
diagnose_operating_system
|
|
check_selinux
|
|
check_firewalld
|
|
processor_check
|
|
disk_usage
|
|
check_networking
|
|
check_name_resolution
|
|
check_dhcp_servers
|
|
process_status
|
|
ftl_full_status
|
|
parse_setup_vars
|
|
check_x_headers
|
|
analyze_gravity_list
|
|
show_groups
|
|
show_domainlist
|
|
show_clients
|
|
show_adlists
|
|
show_content_of_pihole_files
|
|
show_messages
|
|
parse_locale
|
|
analyze_pihole_log
|
|
copy_to_debug_log
|
|
upload_to_tricorder
|