diff options
Diffstat (limited to 'hypr/.config/hypr/waybar-alt-2/scripts/network_traffic.sh')
| -rwxr-xr-x | hypr/.config/hypr/waybar-alt-2/scripts/network_traffic.sh | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/hypr/.config/hypr/waybar-alt-2/scripts/network_traffic.sh b/hypr/.config/hypr/waybar-alt-2/scripts/network_traffic.sh new file mode 100755 index 0000000..ac63d01 --- /dev/null +++ b/hypr/.config/hypr/waybar-alt-2/scripts/network_traffic.sh @@ -0,0 +1,110 @@ +#!/bin/bash + +# network_traffic.sh [-tPOLLING_INTERVAL] [NETWORK_INTERFACE...] + +getopts t: __ && shift +isecs=${OPTARG:-1} +ifaces=($@) +: ${rate_max:=1000000} # maximum transfer rate for {percent}, can be overridden setting the env var + +# `snore` adapted from https://blog.dhampir.no/content/sleeping-without-a-subprocess-in-bash-and-how-to-sleep-forever +# without MacOS workaround, TODO: with _snore_fd initialized separatedly, also i dont touch IFS so dont bother with it +snore() { + local IFS + [[ -n "${_snore_fd:-}" ]] || { exec {_snore_fd}<> <(:); } 2>/dev/null + read ${1:+-t "$1"} -u $_snore_fd || : +} + +human_readable() { + local hrunits=( B K M G T P ) + local ndigits=${#1} + local idxunit=$(( (2 + ndigits) / 3 - 1)) + local lentrim=$(( ndigits - (idxunit * 3 ) )) + echo ${1::$lentrim}${hrunits[$idxunit]} +} + +exit_err() { + printf '{"text": "⚠ %s", "tooltip": "%s", "class": "error"}\n' "$@" + exit +} + +if test ${#ifaces[@]} -gt 0; then +# sanity check the interface names + for iface in ${ifaces[@]}; do + test -h "/sys/class/net/${iface}" || exit_err "${iface}" "${iface} is not an existing network interface name" + done +else +# default to all interfaces except `lo` + ifaces=(/sys/class/net/*) + ifaces=(${ifaces[@]##*/}) + ifaces=(${ifaces[@]//lo/}) +# TODO: check that filtering out `lo` is enough, else `^(eth|wlan|enp|wlp)` as suggested +fi + +# sanity check polling interval +if test ${isecs} -lt 1; then + exit_err "${isecs}" "${isecs} is not a valid polling interval" +fi +# NOTE: `snore` would take a decimal interval but bash arithmetic does not +#if test $(echo "${isecs} >= 0.2" |bc) -eq 0; then +# exit_err "${isecs}" "${isecs} is not a valid polling interval" +#fi + +# NOTE: `/proc/net/dev` format is: +# interface: +# RX bytes packets errs drop fifo frame compressed multicast +# TX bytes packets errs drop fifo colls carrier compressed + +# NOTE: array items are: +# 0=rx_bytes 1=rx_packets 2=rx_errs 3=rx_drop +# 4=tx_bytes 5=tx_packets 6=tx_errs 7=tx_drop +for iface in ${ifaces[@]} aggregate; do + declare -a traffic_prev_${iface} traffic_curr_${iface} traffic_delt_${iface} + declare -n traffic_prev=traffic_prev_${iface} + declare -n traffic_curr=traffic_curr_${iface} + declare -n traffic_delt=traffic_delt_${iface} + traffic_prev=( 0 0 0 0 0 0 0 0 ) + traffic_curr=( 0 0 0 0 0 0 0 0 ) + traffic_delt=( 0 0 0 0 0 0 0 0 ) +done + +# TODO: rearrange the loop, do not show bogus on first iteration +while snore ${isecs} ;do + tooltip="" + traffic_delt_aggregate=( 0 0 0 0 0 0 0 0 ) + + readarray -s2 proc_net_dev </proc/net/dev + while read -a data; do + iface=${data[0]%:} + test "${ifaces[*]}" = "${ifaces[*]//${iface}/}" && continue + declare -n traffic_prev=traffic_prev_${iface} + declare -n traffic_curr=traffic_curr_${iface} + declare -n traffic_delt=traffic_delt_${iface} + traffic_curr=(${data[@]:1:4} ${data[@]:9:4}) + #FIXME: tooltip is delayed one iteration wrt main display (but why?) + #printf -v tooltip_hr_rx '%4s⇣' $(human_readable ${traffic_delt[0]}) + #printf -v tooltip_hr_tx '%4s⇡' $(human_readable ${traffic_delt[4]}) + #tooltip="${tooltip:+${tooltip}\r}${iface}\t${tooltip_hr_rx}\t${tooltip_hr_tx}" + for i in {0..7}; do + (( traffic_delt[i] = ( traffic_curr[i] - traffic_prev[i] ) / isecs )) + (( traffic_delt_aggregate[i] += traffic_delt[i] )) + done + traffic_prev=(${traffic_curr[@]}) + done <<<"${proc_net_dev[@]}" + + printf '{"text": "%4s⇣ %4s⇡", "tooltip": "%s", "percentage": %d}\n' \ + $(human_readable ${traffic_delt_aggregate[0]}) \ + $(human_readable ${traffic_delt_aggregate[4]}) \ + "${tooltip}" \ + $(( ( traffic_delt_aggregate[0] + traffic_delt_aggregate[4] ) / rate_max )) + #printf '{"text": "%5s⇣ %5s⇡", "alt": "%s", "tooltip": "%s", "class": "%s", "percentage": %d }\n' $(human_readable ${traffic_delt[0]}) $(human_readable ${traffic_delt[4]}) '_alt' '_tooltip' '_class' 0 +done + + +# NOTE: in waybar config (do NOT use "interval"): +# "custom/network_traffic": { +# "exec": "~/.config/waybar/scripts/network_traffic.sh", +# "return-type": "json", +# "format": "Speed: {}", // optional +# }, + |