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|
#!/usr/bin/env bash
# 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.
# Retrieve stats from FTL engine
pihole-FTL() {
ftl_port=$(cat /var/run/pihole-FTL.port 2> /dev/null)
if [[ -n "$ftl_port" ]]; then
# Open connection to FTL
exec 3<>"/dev/tcp/localhost/$ftl_port"
# Test if connection is open
if { "true" >&3; } 2> /dev/null; then
# Send command to FTL
echo -e ">$1" >&3
# Read input
read -r -t 1 LINE <&3
until [[ ! $? ]] || [[ "$LINE" == *"EOM"* ]]; do
echo "$LINE" >&1
read -r -t 1 LINE <&3
done
# Close connection
exec 3>&-
exec 3<&-
fi
else
echo -e "${COL_LIGHT_RED}FTL offline${COL_NC}"
fi
}
# Print spaces to align right-side content
printFunc() {
txt_len="${#2}"
# Reduce string length when using colour code
[ "${2:0:1}" == "" ] && txt_len=$((txt_len-7))
if [[ "$3" == "last" ]]; then
# Prevent final line from printing trailing newline
scr_size=( $(stty size 2>/dev/null || echo 24 80) )
scr_width="${scr_size[1]}"
title_len="${#1}"
spc_num=$(( (scr_width - title_len) - txt_len ))
[[ "$spc_num" -lt 0 ]] && spc_num="0"
spc=$(printf "%${spc_num}s")
printf "%s%s$spc" "$1" "$2"
else
# Determine number of spaces for padding
spc_num=$(( 20 - txt_len ))
[[ "$spc_num" -lt 0 ]] && spc_num="0"
spc=$(printf "%${spc_num}s")
# Print string (Max 20 characters, prevents overflow)
printf "%s%s$spc" "$1" "${2:0:20}"
fi
}
# Perform on first Chrono run (not for JSON formatted string)
get_init_stats() {
LC_NUMERIC=C
calcFunc(){ awk "BEGIN {print $*}"; }
# 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" "$secs"
}
# Set Colour Codes
coltable="/opt/pihole/COL_TABLE"
if [[ -f "${coltable}" ]]; then
source ${coltable}
else
COL_NC='[0m'
COL_DARK_GRAY='[1;30m'
COL_LIGHT_GREEN='[1;32m'
COL_LIGHT_BLUE='[1;34m'
COL_LIGHT_RED='[1;31m'
COL_YELLOW='[1;33m'
COL_LIGHT_RED='[1;31m'
COL_URG_RED='[39;41m'
fi
# Get RPi model number, or OS distro info
if command -v vcgencmd &> /dev/null; then
sys_rev=$(awk '/Revision/ {print $3}' < /proc/cpuinfo)
case "$sys_rev" 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
*) 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)
[[ "$sys_cores" -ne 1 ]] && sys_cores_plu="cores" || sys_cores_plu="core"
# Test existence of clock speed file for ARM CPU
if [[ -f "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq" ]]; then
scaling_freq_file="/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq"
fi
# Test existence of temperature file
if [[ -f "/sys/class/thermal/thermal_zone0/temp" ]]; then
temp_file="/sys/class/thermal/thermal_zone0/temp"
elif [[ -f "/sys/class/hwmon/hwmon0/temp1_input" ]]; then
temp_file="/sys/class/hwmon/hwmon0/temp1_input"
else
temp_file=""
fi
# Test existence of setupVars config
if [[ -f "/etc/pihole/setupVars.conf" ]]; then
setupVars="/etc/pihole/setupVars.conf"
fi
}
get_sys_stats() {
local ph_ver_raw
local cpu_raw
local ram_raw
local disk_raw
# Update every 12 refreshes (Def: every 60s)
count=$((count+1))
if [[ "$count" == "1" ]] || (( "$count" % 12 == 0 )); then
[[ -n "$setupVars" ]] && source "$setupVars"
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="${ph_ver_raw[0]}"
ph_lte_ver="${ph_ver_raw[1]}"
ph_ftl_ver="${ph_ver_raw[2]}"
else
ph_core_ver="${COL_LIGHT_RED}API unavailable${COL_NC}"
fi
sys_name=$(hostname)
[[ -n "$TEMPERATUREUNIT" ]] && temp_unit="$TEMPERATUREUNIT" || temp_unit="c"
# Get storage stats for partition mounted on /
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=$(route -n | awk '$4 == "UG" {print $2;exit}')
# Get DHCP stats, if feature is enabled
if [[ "$DHCP_ACTIVE" == "true" ]]; then
ph_dhcp_eip="${DHCP_END##*.}"
ph_dhcp_max=$(( ${DHCP_END##*.} - ${DHCP_START##*.} + 1 ))
fi
# Get alt DNS server, or print total count of alt DNS servers
if [[ -z "${PIHOLE_DNS_3}" ]]; then
ph_alts="${PIHOLE_DNS_2}"
else
dns_count="0"
[[ -n "${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="$dns_count+"
ph_alts="${dns_count} others"
fi
fi
sys_uptime=$(hrSecs "$(cut -d. -f1 /proc/uptime)")
sys_loadavg=$(cut -d " " -f1,2,3 /proc/loadavg)
# Get CPU usage, only counting processes over 1% CPU as active
cpu_raw=$(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 $4;exit}')
fi
# Determine correct string format for CPU clock speed
if [[ -n "$cpu_mhz" ]]; then
[[ "$cpu_mhz" -le "999" ]] && cpu_freq="$cpu_mhz MHz" || cpu_freq="$(calcFunc "$cpu_mhz"/1000) Ghz"
[[ -n "$cpu_freq" ]] && cpu_freq_str=" @ $cpu_freq" || cpu_freq_str=""
fi
# Determine colour for temperature
if [[ -n "$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 "($(< $temp_file) / 1000) + 273.15")")
fi
else
cpu_temp_str=""
fi
ram_raw=($(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 [[ "$(pihole status web 2> /dev/null)" == "1" ]]; then
ph_status="${COL_LIGHT_GREEN}Active"
else
ph_status="${COL_LIGHT_RED}Inactive"
fi
if [[ "$DHCP_ACTIVE" == "true" ]]; then
ph_dhcp_num=$(wc -l 2> /dev/null < "/etc/pihole/dhcp.leases")
fi
}
get_ftl_stats() {
local stats_raw
stats_raw=($(pihole-FTL "stats"))
domains_being_blocked_raw="${stats_raw[1]}"
dns_queries_today_raw="${stats_raw[3]}"
ads_blocked_today_raw="${stats_raw[5]}"
ads_percentage_today_raw="${stats_raw[7]}"
# Only retrieve these stats when not called from jsonFunc
if [[ -z "$1" ]]; then
local recent_blocked_raw
local top_ad_raw
local top_domain_raw
local top_client_raw
domains_being_blocked=$(printf "%'.0f\n" "${domains_being_blocked_raw}")
dns_queries_today=$(printf "%'.0f\n" "${dns_queries_today_raw}")
ads_blocked_today=$(printf "%'.0f\n" "${ads_blocked_today_raw}")
ads_percentage_today=$(printf "%'.0f\n" "${ads_percentage_today_raw}")
recent_blocked_raw=$(pihole-FTL recentBlocked)
top_ad_raw=($(pihole-FTL "top-ads (1)"))
top_domain_raw=($(pihole-FTL "top-domains (1)"))
top_client_raw=($(pihole-FTL "top-clients (1)"))
# Limit strings to 40 characters to prevent overflow
recent_blocked="${recent_blocked_raw:0:40}"
top_ad="${top_ad_raw[2]:0:40}"
top_domain="${top_domain_raw[2]:0:40}"
[[ "${top_client_raw[3]}" ]] && top_client="${top_client_raw[3]:0:40}" || top_client="${top_client_raw[2]:0:40}"
fi
}
chronoFunc() {
get_init_stats
for (( ; ; )); do
get_sys_stats
get_ftl_stats
# Do not print LTE/FTL strings if API is unavailable
ph_core_str=" ${COL_DARK_GRAY}Pi-hole: $ph_core_ver${COL_NC}"
if [[ -n "$ph_lte_ver" ]]; then
ph_lte_str=" ${COL_DARK_GRAY}AdminLTE: $ph_lte_ver${COL_NC}"
ph_ftl_str=" ${COL_DARK_GRAY}FTL: $ph_ftl_ver${COL_NC}"
fi
clear
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$ph_core_str
[0;1;33;93m| ¯[0;1;32;92m_[0;1;36;96m/¯[0;1;34;94m|_[0;1;35;95m_[0;1;31;91m| [0;1;33;93m' [0;1;32;92m\/ [0;1;36;96m_ [0;1;34;94m\ [0;1;35;95m/ [0;1;31;91m-[0;1;33;93m_)[0m$ph_lte_str
[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
${COL_DARK_GRAY}——————————————————————————————————————————————————————————${COL_NC}"
printFunc " Hostname: " "$sys_name"
[ -n "$sys_type" ] && printf "%s(%s)%s\n" "$COL_DARK_GRAY" "$sys_type" "$COL_NC" || printf "\n"
printf "%s\n" " Uptime: $sys_uptime"
printFunc " Task Load: " "$sys_loadavg"
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
|