pi-hole/advanced/Scripts/chronometer.sh

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#!/usr/bin/env bash
# shellcheck disable=SC1090,SC1091
# Pi-hole: A black hole for Internet advertisements
# (c) 2017 Pi-hole, LLC (https://pi-hole.net)
# Network-wide ad blocking via your own hardware.
#
# Calculates stats and displays to an LCD
#
# This file is copyright under the latest version of the EUPL.
# Please see LICENSE file for your rights under this license.
LC_ALL=C
LC_NUMERIC=C
# Retrieve stats from FTL engine
pihole-FTL() {
local ftl_port LINE
# shellcheck disable=SC1091
. /opt/pihole/utils.sh
ftl_port=$(getFTLAPIPort)
if [[ -n "$ftl_port" ]]; then
# Open connection to FTL
exec 3<>"/dev/tcp/127.0.0.1/$ftl_port"
# Test if connection is open
if { "true" >&3; } 2> /dev/null; then
# Send command to FTL and ask to quit when finished
echo -e ">$1 >quit" >&3
# Read input until we received an empty string and the connection is
# closed
read -r -t 1 LINE <&3
until [[ -z "${LINE}" ]] && [[ ! -t 3 ]]; do
echo "$LINE" >&1
read -r -t 1 LINE <&3
done
# Close connection
exec 3>&-
exec 3<&-
fi
else
echo "0"
fi
}
# Print spaces to align right-side additional text
printFunc() {
local text_last
title="$1"
title_len="${#title}"
text_main="$2"
text_main_nocol="$text_main"
if [[ "${text_main:0:1}" == "" ]]; then
text_main_nocol=$(sed 's/\[[0-9;]\{1,5\}m//g' <<< "$text_main")
fi
text_main_len="${#text_main_nocol}"
text_addn="$3"
if [[ "$text_addn" == "last" ]]; then
text_addn=""
text_last="true"
fi
# If there is additional text, define max length of text_main
if [[ -n "$text_addn" ]]; then
case "$scr_cols" in
[0-9]|1[0-9]|2[0-9]|3[0-9]|4[0-4]) text_main_max_len="9";;
4[5-9]) text_main_max_len="14";;
*) text_main_max_len="19";;
esac
fi
[[ -z "$text_addn" ]] && text_main_max_len="$(( scr_cols - title_len ))"
# Remove excess characters from main text
if [[ "$text_main_len" -gt "$text_main_max_len" ]]; then
# Trim text without colors
text_main_trim="${text_main_nocol:0:$text_main_max_len}"
# Replace with trimmed text
text_main="${text_main/$text_main_nocol/$text_main_trim}"
fi
# Determine amount of spaces for each line
if [[ -n "$text_last" ]]; then
# Move cursor to end of screen
spc_num=$(( scr_cols - ( title_len + text_main_len ) ))
else
spc_num=$(( text_main_max_len - text_main_len ))
fi
[[ "$spc_num" -le 0 ]] && spc_num="0"
spc=$(printf "%${spc_num}s")
#spc="${spc// /.}" # Debug: Visualize spaces
printf "%s%s$spc" "$title" "$text_main"
if [[ -n "$text_addn" ]]; then
printf "%s(%s)%s\\n" "$COL_NC$COL_DARK_GRAY" "$text_addn" "$COL_NC"
else
# Do not print trailing newline on final line
[[ -z "$text_last" ]] && printf "%s\\n" "$COL_NC"
fi
}
# Perform on first Chrono run (not for JSON formatted string)
get_init_stats() {
calcFunc(){ awk "BEGIN {print $*}" 2> /dev/null; }
# Convert bytes to human-readable format
hrBytes() {
awk '{
num=$1;
if(num==0) {
print "0 B"
} else {
xxx=(num<0?-num:num)
sss=(num<0?-1:1)
split("B KB MB GB TB PB",type)
for(i=5;yyy < 1;i--) {
yyy=xxx / (2^(10*i))
}
printf "%.0f " type[i+2], yyy*sss
}
}' <<< "$1";
}
# Convert seconds to human-readable format
hrSecs() {
day=$(( $1/60/60/24 )); hrs=$(( $1/3600%24 ))
mins=$(( ($1%3600)/60 )); secs=$(( $1%60 ))
[[ "$day" -ge "2" ]] && plu="s"
[[ "$day" -ge "1" ]] && days="$day day${plu}, " || days=""
printf "%s%02d:%02d:%02d\\n" "$days" "$hrs" "$mins" "$secs"
}
# Set Color Codes
coltable="/opt/pihole/COL_TABLE"
if [[ -f "${coltable}" ]]; then
source ${coltable}
else
COL_NC=""
COL_DARK_GRAY=""
COL_LIGHT_GREEN=""
COL_LIGHT_BLUE=""
COL_LIGHT_RED=""
COL_YELLOW=""
COL_LIGHT_RED=""
COL_URG_RED=""
fi
# Get RPi throttle state (RPi 3B only) & model number, or OS distro info
if command -v vcgencmd &> /dev/null; then
local sys_throttle_raw
local sys_rev_raw
sys_throttle_raw=$(vgt=$(sudo vcgencmd get_throttled); echo "${vgt##*x}")
# Active Throttle Notice: https://bit.ly/2gnunOo
if [[ "$sys_throttle_raw" != "0" ]]; then
case "$sys_throttle_raw" in
*0001) thr_type="${COL_YELLOW}Under Voltage";;
*0002) thr_type="${COL_LIGHT_BLUE}Arm Freq Cap";;
*0003) thr_type="${COL_YELLOW}UV${COL_DARK_GRAY},${COL_NC} ${COL_LIGHT_BLUE}AFC";;
*0004) thr_type="${COL_LIGHT_RED}Throttled";;
*0005) thr_type="${COL_YELLOW}UV${COL_DARK_GRAY},${COL_NC} ${COL_LIGHT_RED}TT";;
*0006) thr_type="${COL_LIGHT_BLUE}AFC${COL_DARK_GRAY},${COL_NC} ${COL_LIGHT_RED}TT";;
*0007) thr_type="${COL_YELLOW}UV${COL_DARK_GRAY},${COL_NC} ${COL_LIGHT_BLUE}AFC${COL_DARK_GRAY},${COL_NC} ${COL_LIGHT_RED}TT";;
esac
[[ -n "$thr_type" ]] && sys_throttle="$thr_type${COL_DARK_GRAY}"
fi
sys_rev_raw=$(awk '/Revision/ {print $3}' < /proc/cpuinfo)
case "$sys_rev_raw" in
000[2-6]) sys_model=" 1, Model B";; # 256MB
000[7-9]) sys_model=" 1, Model A";; # 256MB
000d|000e|000f) sys_model=" 1, Model B";; # 512MB
0010|0013) sys_model=" 1, Model B+";; # 512MB
0012|0015) sys_model=" 1, Model A+";; # 256MB
a0104[0-1]|a21041|a22042) sys_model=" 2, Model B";; # 1GB
900021) sys_model=" 1, Model A+";; # 512MB
900032) sys_model=" 1, Model B+";; # 512MB
90009[2-3]|920093) sys_model=" Zero";; # 512MB
9000c1) sys_model=" Zero W";; # 512MB
a02082|a[2-3]2082) sys_model=" 3, Model B";; # 1GB
a020d3) sys_model=" 3, Model B+";; # 1GB
*) sys_model="";;
esac
sys_type="Raspberry Pi$sys_model"
else
source "/etc/os-release"
CODENAME=$(sed 's/[()]//g' <<< "${VERSION/* /}")
sys_type="${NAME/ */} ${CODENAME^} $VERSION_ID"
fi
# Get core count
sys_cores=$(grep -c "^processor" /proc/cpuinfo)
# Test existence of clock speed file for ARM CPU
if [[ -f "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq" ]]; then
scaling_freq_file="/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq"
fi
# Test existence of temperature file
if [[ -f "/sys/class/thermal/thermal_zone0/temp" ]]; then
temp_file="/sys/class/thermal/thermal_zone0/temp"
elif [[ -f "/sys/class/hwmon/hwmon0/temp1_input" ]]; then
temp_file="/sys/class/hwmon/hwmon0/temp1_input"
else
temp_file=""
fi
# Test existence of setupVars config
if [[ -f "/etc/pihole/setupVars.conf" ]]; then
setupVars="/etc/pihole/setupVars.conf"
fi
}
get_sys_stats() {
local ph_ver_raw
local cpu_raw
local ram_raw
local disk_raw
# Update every 12 refreshes (Def: every 60s)
count=$((count+1))
if [[ "$count" == "1" ]] || (( "$count" % 12 == 0 )); then
# Do not source setupVars if file does not exist
[[ -n "$setupVars" ]] && source "$setupVars"
mapfile -t ph_ver_raw < <(pihole -v -c 2> /dev/null | sed -n 's/^.* v/v/p')
if [[ -n "${ph_ver_raw[0]}" ]]; then
ph_core_ver="${ph_ver_raw[0]}"
if [[ ${#ph_ver_raw[@]} -eq 2 ]]; then
# AdminLTE not installed
ph_lte_ver="(not installed)"
ph_ftl_ver="${ph_ver_raw[1]}"
else
ph_lte_ver="${ph_ver_raw[1]}"
ph_ftl_ver="${ph_ver_raw[2]}"
fi
else
ph_core_ver="-1"
fi
sys_name=$(hostname)
[[ -n "$TEMPERATUREUNIT" ]] && temp_unit="${TEMPERATUREUNIT^^}" || temp_unit="C"
# Get storage stats for partition mounted on /
read -r -a disk_raw <<< "$(df -B1 / 2> /dev/null | awk 'END{ print $3,$2,$5 }')"
disk_used="${disk_raw[0]}"
disk_total="${disk_raw[1]}"
disk_perc="${disk_raw[2]}"
net_gateway=$(ip route | grep default | cut -d ' ' -f 3 | head -n 1)
# Get DHCP stats, if feature is enabled
if [[ "$DHCP_ACTIVE" == "true" ]]; then
ph_dhcp_max=$(( ${DHCP_END##*.} - ${DHCP_START##*.} + 1 ))
fi
# Get DNS server count
dns_count="0"
[[ -n "${PIHOLE_DNS_1}" ]] && dns_count=$((dns_count+1))
[[ -n "${PIHOLE_DNS_2}" ]] && dns_count=$((dns_count+1))
[[ -n "${PIHOLE_DNS_3}" ]] && dns_count=$((dns_count+1))
[[ -n "${PIHOLE_DNS_4}" ]] && dns_count=$((dns_count+1))
[[ -n "${PIHOLE_DNS_5}" ]] && dns_count=$((dns_count+1))
[[ -n "${PIHOLE_DNS_6}" ]] && dns_count=$((dns_count+1))
[[ -n "${PIHOLE_DNS_7}" ]] && dns_count=$((dns_count+1))
[[ -n "${PIHOLE_DNS_8}" ]] && dns_count=$((dns_count+1))
[[ -n "${PIHOLE_DNS_9}" ]] && dns_count="$dns_count+"
fi
# Get screen size
read -r -a scr_size <<< "$(stty size 2>/dev/null || echo 24 80)"
scr_lines="${scr_size[0]}"
scr_cols="${scr_size[1]}"
# Determine Chronometer size behavior
if [[ "$scr_cols" -ge 58 ]]; then
chrono_width="large"
elif [[ "$scr_cols" -gt 40 ]]; then
chrono_width="medium"
else
chrono_width="small"
fi
# Determine max length of divider string
scr_line_len=$(( scr_cols - 2 ))
[[ "$scr_line_len" -ge 58 ]] && scr_line_len="58"
scr_line_str=$(printf "%${scr_line_len}s")
scr_line_str="${scr_line_str// /—}"
sys_uptime=$(hrSecs "$(cut -d. -f1 /proc/uptime)")
sys_loadavg=$(cut -d " " -f1,2,3 /proc/loadavg)
# Get CPU usage, only counting processes over 1% as active
# shellcheck disable=SC2009
cpu_raw=$(ps -eo pcpu,rss --no-headers | grep -E -v " 0")
cpu_tasks=$(wc -l <<< "$cpu_raw")
cpu_taskact=$(sed -r "/(^ 0.)/d" <<< "$cpu_raw" | wc -l)
cpu_perc=$(awk '{sum+=$1} END {printf "%.0f\n", sum/'"$sys_cores"'}' <<< "$cpu_raw")
# Get CPU clock speed
if [[ -n "$scaling_freq_file" ]]; then
cpu_mhz=$(( $(< /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq) / 1000 ))
else
cpu_mhz=$(lscpu | awk -F ":" '/MHz/ {print $2;exit}')
cpu_mhz=$(printf "%.0f" "${cpu_mhz//[[:space:]]/}")
fi
# Determine whether to display CPU clock speed as MHz or GHz
if [[ -n "$cpu_mhz" ]]; then
[[ "$cpu_mhz" -le "999" ]] && cpu_freq="$cpu_mhz MHz" || cpu_freq="$(printf "%.1f" $(calcFunc "$cpu_mhz"/1000)) GHz"
[[ "${cpu_freq}" == *".0"* ]] && cpu_freq="${cpu_freq/.0/}"
fi
# Determine color for temperature
if [[ -n "$temp_file" ]]; then
if [[ "$temp_unit" == "C" ]]; then
cpu_temp=$(printf "%.0fc\\n" "$(calcFunc "$(< $temp_file) / 1000")")
case "${cpu_temp::-1}" in
-*|[0-9]|[1-3][0-9]) cpu_col="$COL_LIGHT_BLUE";;
4[0-9]) cpu_col="";;
5[0-9]) cpu_col="$COL_YELLOW";;
6[0-9]) cpu_col="$COL_LIGHT_RED";;
*) cpu_col="$COL_URG_RED";;
esac
# $COL_NC$COL_DARK_GRAY is needed for $COL_URG_RED
cpu_temp_str=" @ $cpu_col$cpu_temp$COL_NC$COL_DARK_GRAY"
elif [[ "$temp_unit" == "F" ]]; then
cpu_temp=$(printf "%.0ff\\n" "$(calcFunc "($(< $temp_file) / 1000) * 9 / 5 + 32")")
case "${cpu_temp::-1}" in
-*|[0-9]|[0-9][0-9]) cpu_col="$COL_LIGHT_BLUE";;
1[0-1][0-9]) cpu_col="";;
1[2-3][0-9]) cpu_col="$COL_YELLOW";;
1[4-5][0-9]) cpu_col="$COL_LIGHT_RED";;
*) cpu_col="$COL_URG_RED";;
esac
cpu_temp_str=" @ $cpu_col$cpu_temp$COL_NC$COL_DARK_GRAY"
else
cpu_temp_str=$(printf " @ %.0fk\\n" "$(calcFunc "($(< $temp_file) / 1000) + 273.15")")
fi
else
cpu_temp_str=""
fi
read -r -a ram_raw <<< "$(awk '/MemTotal:/{total=$2} /MemFree:/{free=$2} /Buffers:/{buffers=$2} /^Cached:/{cached=$2} END {printf "%.0f %.0f %.0f", (total-free-buffers-cached)*100/total, (total-free-buffers-cached)*1024, total*1024}' /proc/meminfo)"
ram_perc="${ram_raw[0]}"
ram_used="${ram_raw[1]}"
ram_total="${ram_raw[2]}"
if [[ "$(pihole status web 2> /dev/null)" -ge "1" ]]; then
ph_status="${COL_LIGHT_GREEN}Active"
else
ph_status="${COL_LIGHT_RED}Offline"
fi
if [[ "$DHCP_ACTIVE" == "true" ]]; then
local ph_dhcp_range
ph_dhcp_range=$(seq -s "|" -f "${DHCP_START%.*}.%g" "${DHCP_START##*.}" "${DHCP_END##*.}")
# Count dynamic leases from available range, and not static leases
ph_dhcp_num=$(grep -cE "$ph_dhcp_range" "/etc/pihole/dhcp.leases")
ph_dhcp_percent=$(( ph_dhcp_num * 100 / ph_dhcp_max ))
fi
}
get_ftl_stats() {
local stats_raw
mapfile -t stats_raw < <(pihole-FTL "stats")
domains_being_blocked_raw="${stats_raw[0]#* }"
dns_queries_today_raw="${stats_raw[1]#* }"
ads_blocked_today_raw="${stats_raw[2]#* }"
ads_percentage_today_raw="${stats_raw[3]#* }"
queries_forwarded_raw="${stats_raw[5]#* }"
queries_cached_raw="${stats_raw[6]#* }"
# Only retrieve these stats when not called from jsonFunc
if [[ -z "$1" ]]; then
local top_ad_raw
local top_domain_raw
local top_client_raw
domains_being_blocked=$(printf "%.0f\\n" "${domains_being_blocked_raw}" 2> /dev/null)
dns_queries_today=$(printf "%.0f\\n" "${dns_queries_today_raw}")
ads_blocked_today=$(printf "%.0f\\n" "${ads_blocked_today_raw}")
ads_percentage_today=$(printf "%'.0f\\n" "${ads_percentage_today_raw}")
queries_cached_percentage=$(printf "%.0f\\n" "$(calcFunc "$queries_cached_raw * 100 / ( $queries_forwarded_raw + $queries_cached_raw )")")
recent_blocked=$(pihole-FTL recentBlocked)
read -r -a top_ad_raw <<< "$(pihole-FTL "top-ads (1)")"
read -r -a top_domain_raw <<< "$(pihole-FTL "top-domains (1)")"
read -r -a top_client_raw <<< "$(pihole-FTL "top-clients (1)")"
top_ad="${top_ad_raw[2]}"
top_domain="${top_domain_raw[2]}"
if [[ "${top_client_raw[3]}" ]]; then
top_client="${top_client_raw[3]}"
else
top_client="${top_client_raw[2]}"
fi
fi
}
get_strings() {
# Expand or contract strings depending on screen size
if [[ "$chrono_width" == "large" ]]; then
phc_str=" ${COL_DARK_GRAY}Core"
lte_str=" ${COL_DARK_GRAY}Web"
ftl_str=" ${COL_DARK_GRAY}FTL"
api_str="${COL_LIGHT_RED}API Offline"
host_info="$sys_type"
sys_info="$sys_throttle"
sys_info2="Active: $cpu_taskact of $cpu_tasks tasks"
used_str="Used: "
leased_str="Leased: "
domains_being_blocked=$(printf "%'.0f" "$domains_being_blocked")
ads_blocked_today=$(printf "%'.0f" "$ads_blocked_today")
dns_queries_today=$(printf "%'.0f" "$dns_queries_today")
ph_info="Blocking: $domains_being_blocked sites"
total_str="Total: "
else
phc_str=" ${COL_DARK_GRAY}Core"
lte_str=" ${COL_DARK_GRAY}Web"
ftl_str=" ${COL_DARK_GRAY}FTL"
api_str="${COL_LIGHT_RED}API Down"
ph_info="$domains_being_blocked blocked"
fi
[[ "$sys_cores" -ne 1 ]] && sys_cores_txt="${sys_cores}x "
cpu_info="$sys_cores_txt$cpu_freq$cpu_temp_str"
ram_info="$used_str$(hrBytes "$ram_used") of $(hrBytes "$ram_total")"
disk_info="$used_str$(hrBytes "$disk_used") of $(hrBytes "$disk_total")"
lan_info="Gateway: $net_gateway"
dhcp_info="$leased_str$ph_dhcp_num of $ph_dhcp_max"
ads_info="$total_str$ads_blocked_today of $dns_queries_today"
dns_info="$dns_count DNS servers"
[[ "$recent_blocked" == "0" ]] && recent_blocked="${COL_LIGHT_RED}FTL offline${COL_NC}"
}
chronoFunc() {
local extra_arg="$1"
local extra_value="$2"
get_init_stats
for (( ; ; )); do
get_sys_stats
get_ftl_stats
get_strings
# Strip excess development version numbers
if [[ "$ph_core_ver" != "-1" ]]; then
phc_ver_str="$phc_str: ${ph_core_ver%-*}${COL_NC}"
lte_ver_str="$lte_str: ${ph_lte_ver%-*}${COL_NC}"
ftl_ver_str="$ftl_str: ${ph_ftl_ver%-*}${COL_NC}"
else
phc_ver_str="$phc_str: $api_str${COL_NC}"
fi
# Get refresh number
if [[ "${extra_arg}" = "refresh" ]]; then
num="${extra_value}"
num_str="Refresh set for every $num seconds"
else
num_str=""
fi
clear
# Remove exit message heading on third refresh
if [[ "$count" -le 2 ]] && [[ "${extra_arg}" != "exit" ]]; then
echo -e " ${COL_LIGHT_GREEN}Pi-hole Chronometer${COL_NC}
$num_str
${COL_LIGHT_RED}Press Ctrl-C to exit${COL_NC}
${COL_DARK_GRAY}$scr_line_str${COL_NC}"
else
echo -e "|¯¯¯(¯)_|¯|_ ___|¯|___$phc_ver_str\\n| ¯_/¯|_| ' \\/ _ \\ / -_)$lte_ver_str\\n|_| |_| |_||_\\___/_\\___|$ftl_ver_str\\n ${COL_DARK_GRAY}$scr_line_str${COL_NC}"
fi
printFunc " Hostname: " "$sys_name" "$host_info"
printFunc " Uptime: " "$sys_uptime" "$sys_info"
printFunc " Task Load: " "$sys_loadavg" "$sys_info2"
printFunc " CPU usage: " "$cpu_perc%" "$cpu_info"
printFunc " RAM usage: " "$ram_perc%" "$ram_info"
printFunc " HDD usage: " "$disk_perc" "$disk_info"
if [[ "$DHCP_ACTIVE" == "true" ]]; then
printFunc "DHCP usage: " "$ph_dhcp_percent%" "$dhcp_info"
fi
printFunc " Pi-hole: " "$ph_status" "$ph_info"
printFunc " Blocked: " "$ads_percentage_today%" "$ads_info"
printFunc "Local Qrys: " "$queries_cached_percentage%" "$dns_info"
printFunc "Last Block: " "$recent_blocked"
printFunc " Top Block: " "$top_ad"
# Provide more stats on screens with more lines
if [[ "$scr_lines" -eq 17 ]]; then
if [[ "$DHCP_ACTIVE" == "true" ]]; then
printFunc "Top Domain: " "$top_domain" "last"
else
print_client="true"
fi
else
print_client="true"
fi
if [[ -n "$print_client" ]]; then
printFunc "Top Domain: " "$top_domain"
printFunc "Top Client: " "$top_client" "last"
fi
# Handle exit/refresh options
if [[ "${extra_arg}" == "exit" ]]; then
exit 0
else
if [[ "${extra_arg}" == "refresh" ]]; then
sleep "$num"
else
sleep 5
fi
fi
done
}
jsonFunc() {
get_ftl_stats "json"
echo "{\"domains_being_blocked\":${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 without refreshing
-h, --help Display this help text"
fi
exit 0
}
if [[ $# = 0 ]]; then
chronoFunc
fi
case "$1" in
"-j" | "--json" ) jsonFunc;;
"-h" | "--help" ) helpFunc;;
"-r" | "--refresh" ) chronoFunc refresh "$2";;
"-e" | "--exit" ) chronoFunc exit;;
* ) helpFunc "?";;
esac