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#!/usr/bin/env bash
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# Pi-hole: A black hole for Internet advertisements
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# (c) 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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# Calculates stats and displays to an LCD
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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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# Retrieve stats from FTL engine
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pihole-FTL() {
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ftl_port=$(cat /var/run/pihole-FTL.port 2> /dev/null)
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if [[ -n "$ftl_port" ]]; then
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# Open connection to FTL
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exec 3<>"/dev/tcp/localhost/$ftl_port"
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# Test if connection is open
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if { "true" >&3; } 2> /dev/null; then
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# Send command to FTL
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echo -e ">$1" >&3
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# Read input
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read -r -t 1 LINE <&3
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until [[ ! $? ]] || [[ "$LINE" == *"EOM"* ]]; do
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echo "$LINE" >&1
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read -r -t 1 LINE <&3
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done
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# Close connection
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exec 3>&-
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exec 3<&-
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fi
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else
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echo -e "${COL_LIGHT_RED}FTL offline${COL_NC}"
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fi
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}
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# Print spaces to align right-side content
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printFunc() {
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txt_len="${#2}"
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# Reduce string length when using colour code
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[ "${2:0:1}" == "" ] && txt_len=$((txt_len-7))
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if [[ "$3" == "last" ]]; then
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# Prevent final line from printing trailing newline
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scr_size=( $(stty size 2>/dev/null || echo 24 80) )
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scr_width="${scr_size[1]}"
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title_len="${#1}"
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spc_num=$(( (scr_width - title_len) - txt_len ))
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[[ "$spc_num" -lt 0 ]] && spc_num="0"
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spc=$(printf "%${spc_num}s")
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printf "%s%s$spc" "$1" "$2"
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else
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# Determine number of spaces for padding
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spc_num=$(( 20 - txt_len ))
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[[ "$spc_num" -lt 0 ]] && spc_num="0"
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spc=$(printf "%${spc_num}s")
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# Print string (Max 20 characters, prevents overflow)
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printf "%s%s$spc" "$1" "${2:0:20}"
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fi
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}
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# Perform on first Chrono run (not for JSON formatted string)
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get_init_stats() {
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LC_NUMERIC=C
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calcFunc(){ awk "BEGIN {print $*}"; }
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# Convert bytes to human-readable format
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hrBytes() {
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awk '{
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num=$1;
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if(num==0) {
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print "0 B"
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} else {
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xxx=(num<0?-num:num)
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sss=(num<0?-1:1)
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split("B KB MB GB TB PB",type)
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for(i=5;yyy < 1;i--) {
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yyy=xxx / (2^(10*i))
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}
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printf "%.0f " type[i+2], yyy*sss
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}
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}' <<< "$1";
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}
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# Convert seconds to human-readable format
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hrSecs() {
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day=$(( $1/60/60/24 )); hrs=$(( $1/3600%24 )); mins=$(( ($1%3600)/60 )); secs=$(( $1%60 ))
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[[ "$day" -ge "2" ]] && plu="s"
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[[ "$day" -ge "1" ]] && days="$day day${plu}, " || days=""
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printf "%s%02d:%02d:%02d\n" "$days" "$hrs" "$mins" "$secs"
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}
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# Set Colour Codes
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coltable="/opt/pihole/COL_TABLE"
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if [[ -f "${coltable}" ]]; then
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source ${coltable}
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else
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COL_NC='[0m'
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COL_DARK_GRAY='[1;30m'
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COL_LIGHT_GREEN='[1;32m'
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COL_LIGHT_BLUE='[1;34m'
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COL_LIGHT_RED='[1;31m'
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COL_YELLOW='[1;33m'
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COL_LIGHT_RED='[1;31m'
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COL_URG_RED='[39;41m'
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fi
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# Get RPi model number, or OS distro info
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if command -v vcgencmd &> /dev/null; then
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sys_rev=$(awk '/Revision/ {print $3}' < /proc/cpuinfo)
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case "$sys_rev" in
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000[2-6]) sys_model=" 1, Model B";; # 256MB
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000[7-9]) sys_model=" 1, Model A" ;; # 256MB
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000d|000e|000f) sys_model=" 1, Model B";; # 512MB
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0010|0013) sys_model=" 1, Model B+";; # 512MB
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0012|0015) sys_model=" 1, Model A+";; # 256MB
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a0104[0-1]|a21041|a22042) sys_model=" 2, Model B";; # 1GB
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900021) sys_model=" 1, Model A+";; # 512MB
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900032) sys_model=" 1, Model B+";; # 512MB
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90009[2-3]|920093) sys_model=" Zero";; # 512MB
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9000c1) sys_model=" Zero W";; # 512MB
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a02082|a[2-3]2082) sys_model=" 3, Model B";; # 1GB
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*) sys_model="" ;;
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esac
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sys_type="Raspberry Pi$sys_model"
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else
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source "/etc/os-release"
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CODENAME=$(sed 's/[()]//g' <<< "${VERSION/* /}")
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sys_type="${NAME/ */} ${CODENAME^} $VERSION_ID"
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fi
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# Get core count
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sys_cores=$(grep -c "^processor" /proc/cpuinfo)
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[[ "$sys_cores" -ne 1 ]] && sys_cores_plu="cores" || sys_cores_plu="core"
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# Test existence of clock speed file for ARM CPU
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if [[ -f "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq" ]]; then
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scaling_freq_file="/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq"
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fi
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# Test existence of temperature file
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if [[ -f "/sys/class/thermal/thermal_zone0/temp" ]]; then
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temp_file="/sys/class/thermal/thermal_zone0/temp"
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elif [[ -f "/sys/class/hwmon/hwmon0/temp1_input" ]]; then
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temp_file="/sys/class/hwmon/hwmon0/temp1_input"
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else
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temp_file=""
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fi
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# Test existence of setupVars config
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if [[ -f "/etc/pihole/setupVars.conf" ]]; then
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setupVars="/etc/pihole/setupVars.conf"
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fi
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}
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get_sys_stats() {
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local ph_ver_raw
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local cpu_raw
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local ram_raw
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local disk_raw
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# Update every 12 refreshes (Def: every 60s)
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count=$((count+1))
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if [[ "$count" == "1" ]] || (( "$count" % 12 == 0 )); then
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[[ -n "$setupVars" ]] && source "$setupVars"
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ph_ver_raw=($(pihole -v -c 2> /dev/null | sed -n 's/^.* v/v/p'))
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if [[ -n "${ph_ver_raw[0]}" ]]; then
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ph_core_ver="${ph_ver_raw[0]}"
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ph_lte_ver="${ph_ver_raw[1]}"
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ph_ftl_ver="${ph_ver_raw[2]}"
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else
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ph_core_ver="${COL_LIGHT_RED}API unavailable${COL_NC}"
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fi
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sys_name=$(hostname)
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[[ -n "$TEMPERATUREUNIT" ]] && temp_unit="$TEMPERATUREUNIT" || temp_unit="c"
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# Get storage stats for partition mounted on /
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disk_raw=($(df -B1 / 2> /dev/null | awk 'END{ print $3,$2,$5 }'))
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disk_used="${disk_raw[0]}"
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disk_total="${disk_raw[1]}"
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disk_perc="${disk_raw[2]}"
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net_gateway=$(route -n | awk '$4 == "UG" {print $2;exit}')
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# Get DHCP stats, if feature is enabled
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if [[ "$DHCP_ACTIVE" == "true" ]]; then
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ph_dhcp_eip="${DHCP_END##*.}"
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ph_dhcp_max=$(( ${DHCP_END##*.} - ${DHCP_START##*.} + 1 ))
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fi
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# Get alt DNS server, or print total count of alt DNS servers
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if [[ -z "${PIHOLE_DNS_3}" ]]; then
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ph_alts="${PIHOLE_DNS_2}"
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else
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dns_count="0"
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[[ -n "${PIHOLE_DNS_2}" ]] && dns_count=$((dns_count+1))
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[[ -n "${PIHOLE_DNS_3}" ]] && dns_count=$((dns_count+1))
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[[ -n "${PIHOLE_DNS_4}" ]] && dns_count=$((dns_count+1))
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[[ -n "${PIHOLE_DNS_5}" ]] && dns_count=$((dns_count+1))
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[[ -n "${PIHOLE_DNS_6}" ]] && dns_count=$((dns_count+1))
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[[ -n "${PIHOLE_DNS_7}" ]] && dns_count=$((dns_count+1))
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[[ -n "${PIHOLE_DNS_8}" ]] && dns_count=$((dns_count+1))
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[[ -n "${PIHOLE_DNS_9}" ]] && dns_count="$dns_count+"
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ph_alts="${dns_count} others"
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fi
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fi
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sys_uptime=$(hrSecs "$(cut -d. -f1 /proc/uptime)")
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sys_loadavg=$(cut -d " " -f1,2,3 /proc/loadavg)
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# Get CPU usage, only counting processes over 1% CPU as active
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cpu_raw=$(ps -eo pcpu,rss --no-headers | grep -E -v " 0")
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cpu_tasks=$(wc -l <<< "$cpu_raw")
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cpu_taskact=$(sed -r "/(^ 0.)/d" <<< "$cpu_raw" | wc -l)
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cpu_perc=$(awk '{sum+=$1} END {printf "%.0f\n", sum/'"$sys_cores"'}' <<< "$cpu_raw")
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# Get CPU clock speed
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if [[ -n "$scaling_freq_file" ]]; then
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cpu_mhz=$(( $(< /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq) / 1000 ))
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else
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cpu_mhz=$(lscpu | awk -F "[ .]+" '/MHz/ {print $4;exit}')
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fi
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# Determine correct string format for CPU clock speed
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if [[ -n "$cpu_mhz" ]]; then
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[[ "$cpu_mhz" -le "999" ]] && cpu_freq="$cpu_mhz MHz" || cpu_freq="$(calcFunc "$cpu_mhz"/1000) Ghz"
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[[ -n "$cpu_freq" ]] && cpu_freq_str=" @ $cpu_freq" || cpu_freq_str=""
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fi
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# Determine colour for temperature
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if [[ -n "$temp_file" ]]; then
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if [[ "$temp_unit" == "C" ]]; then
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cpu_temp=$(printf "%'.0fc\n" "$(calcFunc "$(< $temp_file) / 1000")")
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case "${cpu_temp::-1}" in
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-*|[0-9]|[1-3][0-9]) cpu_col="$COL_LIGHT_BLUE";;
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4[0-9]) cpu_col="";;
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5[0-9]) cpu_col="$COL_YELLOW";;
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6[0-9]) cpu_col="$COL_LIGHT_RED";;
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*) cpu_col="$COL_URG_RED";;
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esac
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# $COL_NC$COL_DARK_GRAY is needed for $COL_URG_RED
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cpu_temp_str=", $cpu_col$cpu_temp$COL_NC$COL_DARK_GRAY"
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elif [[ "$temp_unit" == "F" ]]; then
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cpu_temp=$(printf "%'.0ff\n" "$(calcFunc "($(< $temp_file) / 1000) * 9 / 5 + 32")")
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case "${cpu_temp::-1}" in
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-*|[0-9]|[0-9][0-9]) cpu_col="$COL_LIGHT_BLUE";;
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1[0-1][0-9]) cpu_col="";;
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1[2-3][0-9]) cpu_col="$COL_YELLOW";;
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1[4-5][0-9]) cpu_col="$COL_LIGHT_RED";;
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*) cpu_col="$COL_URG_RED";;
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esac
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cpu_temp_str=", $cpu_col$cpu_temp$COL_NC$COL_DARK_GRAY"
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else
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cpu_temp_str=$(printf ", %'.0fk\n" "$(calcFunc "($(< $temp_file) / 1000) + 273.15")")
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fi
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else
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cpu_temp_str=""
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fi
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ram_raw=($(awk '/MemTotal:/{total=$2} /MemFree:/{free=$2} /Buffers:/{buffers=$2} /^Cached:/{cached=$2} END {printf "%.0f %.0f %.0f", (total-free-buffers-cached)*100/total, (total-free-buffers-cached)*1024, total*1024}' /proc/meminfo))
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ram_perc="${ram_raw[0]}"
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ram_used="${ram_raw[1]}"
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ram_total="${ram_raw[2]}"
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if [[ "$(pihole status web 2> /dev/null)" == "1" ]]; then
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ph_status="${COL_LIGHT_GREEN}Active"
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else
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ph_status="${COL_LIGHT_RED}Inactive"
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fi
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if [[ "$DHCP_ACTIVE" == "true" ]]; then
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ph_dhcp_num=$(wc -l 2> /dev/null < "/etc/pihole/dhcp.leases")
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fi
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}
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get_ftl_stats() {
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local stats_raw
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stats_raw=($(pihole-FTL "stats"))
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domains_being_blocked_raw="${stats_raw[1]}"
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dns_queries_today_raw="${stats_raw[3]}"
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ads_blocked_today_raw="${stats_raw[5]}"
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ads_percentage_today_raw="${stats_raw[7]}"
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# Only retrieve these stats when not called from jsonFunc
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if [[ -z "$1" ]]; then
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local recent_blocked_raw
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local top_ad_raw
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local top_domain_raw
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local top_client_raw
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domains_being_blocked=$(printf "%'.0f\n" "${domains_being_blocked_raw}")
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dns_queries_today=$(printf "%'.0f\n" "${dns_queries_today_raw}")
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ads_blocked_today=$(printf "%'.0f\n" "${ads_blocked_today_raw}")
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ads_percentage_today=$(printf "%'.0f\n" "${ads_percentage_today_raw}")
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recent_blocked_raw=$(pihole-FTL recentBlocked)
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top_ad_raw=($(pihole-FTL "top-ads (1)"))
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top_domain_raw=($(pihole-FTL "top-domains (1)"))
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top_client_raw=($(pihole-FTL "top-clients (1)"))
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# Limit strings to 40 characters to prevent overflow
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recent_blocked="${recent_blocked_raw:0:40}"
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top_ad="${top_ad_raw[2]:0:40}"
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top_domain="${top_domain_raw[2]:0:40}"
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[[ "${top_client_raw[3]}" ]] && top_client="${top_client_raw[3]:0:40}" || top_client="${top_client_raw[2]:0:40}"
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fi
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}
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chronoFunc() {
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get_init_stats
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for (( ; ; )); do
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get_sys_stats
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get_ftl_stats
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# Do not print LTE/FTL strings if API is unavailable
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ph_core_str=" ${COL_DARK_GRAY}Pi-hole: $ph_core_ver${COL_NC}"
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if [[ -n "$ph_lte_ver" ]]; then
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ph_lte_str=" ${COL_DARK_GRAY}AdminLTE: $ph_lte_ver${COL_NC}"
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ph_ftl_str=" ${COL_DARK_GRAY}FTL: $ph_ftl_ver${COL_NC}"
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fi
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clear
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echo -e "[0;1;31;91m|¯[0;1;33;93m¯[0;1;32;92m¯[0;1;32;92m(¯[0;1;36;96m)_[0;1;34;94m_[0;1;35;95m|[0;1;33;93m¯[0;1;31;91m|_ [0;1;32;92m__[0;1;36;96m_|[0;1;31;91m¯[0;1;34;94m|[0;1;35;95m__[0;1;31;91m_[0m$ph_core_str
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[0;1;33;93m| ¯[0;1;32;92m_[0;1;36;96m/¯[0;1;34;94m|_[0;1;35;95m_[0;1;31;91m| [0;1;33;93m' [0;1;32;92m\/ [0;1;36;96m_ [0;1;34;94m\ [0;1;35;95m/ [0;1;31;91m-[0;1;33;93m_)[0m$ph_lte_str
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[0;1;32;92m|_[0;1;36;96m| [0;1;34;94m|_[0;1;35;95m| [0;1;33;93m|_[0;1;32;92m||[0;1;36;96m_\[0;1;34;94m__[0;1;35;95m_/[0;1;31;91m_\[0;1;33;93m__[0;1;32;92m_|[0m$ph_ftl_str
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${COL_DARK_GRAY}——————————————————————————————————————————————————————————${COL_NC}"
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printFunc " Hostname: " "$sys_name"
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[ -n "$sys_type" ] && printf "%s(%s)%s\n" "$COL_DARK_GRAY" "$sys_type" "$COL_NC" || printf "\n"
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printf "%s\n" " Uptime: $sys_uptime"
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printFunc " Task Load: " "$sys_loadavg"
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|
printf "%s(%s)%s\n" "$COL_DARK_GRAY" "Active: $cpu_taskact of $cpu_tasks tasks" "$COL_NC"
|
|
|
|
|
|
printFunc " CPU usage: " "$cpu_perc%"
|
|
|
printf "%s(%s)%s\n" "$COL_DARK_GRAY" "$sys_cores $sys_cores_plu$cpu_freq_str$cpu_temp_str" "$COL_NC"
|
|
|
|
|
|
printFunc " RAM usage: " "$ram_perc%"
|
|
|
printf "%s(%s)%s\n" "$COL_DARK_GRAY" "Used: $(hrBytes "$ram_used") of $(hrBytes "$ram_total")" "$COL_NC"
|
|
|
|
|
|
printFunc " HDD usage: " "$disk_perc"
|
|
|
printf "%s(%s)%s\n" "$COL_DARK_GRAY" "Used: $(hrBytes "$disk_used") of $(hrBytes "$disk_total")" "$COL_NC"
|
|
|
|
|
|
printFunc " LAN addr: " "${IPV4_ADDRESS/\/*/}"
|
|
|
printf "%s(%s)%s\n" "$COL_DARK_GRAY" "Gateway: $net_gateway" "$COL_NC"
|
|
|
|
|
|
if [[ "$DHCP_ACTIVE" == "true" ]]; then
|
|
|
printFunc " DHCP: " "$DHCP_START to $ph_dhcp_eip"
|
|
|
printf "%s(%s)%s\n" "$COL_DARK_GRAY" "Leased: $ph_dhcp_num of $ph_dhcp_max" "$COL_NC"
|
|
|
fi
|
|
|
|
|
|
printFunc " Pi-hole: " "$ph_status"
|
|
|
printf "%s(%s)%s\n" "$COL_DARK_GRAY" "Blocking: $domains_being_blocked sites" "$COL_NC"
|
|
|
|
|
|
printFunc " Ads Today: " "$ads_percentage_today%"
|
|
|
printf "%s(%s)%s\n" "$COL_DARK_GRAY" "$ads_blocked_today of $dns_queries_today queries" "$COL_NC"
|
|
|
|
|
|
printFunc " Fwd DNS: " "$PIHOLE_DNS_1"
|
|
|
printf "%s(%s)%s\n" "$COL_DARK_GRAY" "Alt DNS: $ph_alts" "$COL_NC"
|
|
|
|
|
|
echo -e " ${COL_DARK_GRAY}——————————————————————————————————————————————————————————${COL_NC}"
|
|
|
echo " Recently blocked: $recent_blocked"
|
|
|
echo " Top Advertiser: $top_ad"
|
|
|
echo " Top Domain: $top_domain"
|
|
|
printFunc " Top Client: " "$top_client" "last"
|
|
|
|
|
|
if [[ "$1" == "exit" ]]; then
|
|
|
exit 0
|
|
|
else
|
|
|
if [[ -n "$1" ]]; then
|
|
|
sleep "${1}"
|
|
|
else
|
|
|
sleep 5
|
|
|
fi
|
|
|
fi
|
|
|
|
|
|
done
|
|
|
}
|
|
|
|
|
|
jsonFunc() {
|
|
|
get_ftl_stats "json"
|
|
|
echo "{\"domains_being_blocked\":${domains_being_blocked_raw},\"dns_queries_today\":${dns_queries_today_raw},\"ads_blocked_today\":${ads_blocked_today_raw},\"ads_percentage_today\":${ads_percentage_today_raw}}"
|
|
|
}
|
|
|
|
|
|
helpFunc() {
|
|
|
if [[ "$1" == "?" ]]; then
|
|
|
echo "Unknown option. Please view 'pihole -c --help' for more information"
|
|
|
else
|
|
|
echo "Usage: pihole -c [options]
|
|
|
Example: 'pihole -c -j'
|
|
|
Calculates stats and displays to an LCD
|
|
|
|
|
|
Options:
|
|
|
-j, --json Output stats as JSON formatted string
|
|
|
-r, --refresh Set update frequency (in seconds)
|
|
|
-e, --exit Output stats and exit witout refreshing
|
|
|
-h, --help Display this help text"
|
|
|
fi
|
|
|
|
|
|
exit 0
|
|
|
}
|
|
|
|
|
|
if [[ $# = 0 ]]; then
|
|
|
chronoFunc
|
|
|
fi
|
|
|
|
|
|
for var in "$@"; do
|
|
|
case "$var" in
|
|
|
"-j" | "--json" ) jsonFunc;;
|
|
|
"-h" | "--help" ) helpFunc;;
|
|
|
"-r" | "--refresh" ) chronoFunc "$2";;
|
|
|
"-e" | "--exit" ) chronoFunc "exit";;
|
|
|
* ) helpFunc "?";;
|
|
|
esac
|
|
|
done
|
