#!/bin/sh -e
#
# network: calculate the network up/down rates
#
# Copyright (C) 2008 Canonical Ltd.
# Copyright (C) 2011-2014 Dustin Kirkland
#
# Authors: Dustin Kirkland <kirkland@byobu.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
__network_detail() {
get_network_interface; local interface="$_RET"
LC_ALL=C /sbin/ip addr show "$interface" | $BYOBU_SED 's/\s*$//'
}
__network() {
get_network_interface; local interface="$_RET"
local x1=0 x2=0 tx1=0 i= t= unit= symbol= cache= rate=
status_freq network
t="$_RET"
# By default, we won't bug the user with the display of network traffic
# below NETWORK_THRESHOLD in kbps; override in $BYOBU_CONFIG_DIR/status
[ -n "$NETWORK_THRESHOLD" ] || NETWORK_THRESHOLD=20
for i in up down; do
unit="kb"
case $i in
up) symbol="$ICON_UP" ;;
down) symbol="$ICON_DN" ;;
esac
cache="$BYOBU_RUN_DIR/cache.$BYOBU_BACKEND/network.$i"
[ -r "$cache" ] && read x1 < "$cache" || tx1=0
local iface rbytes rpackets rerrs rdrop rfifo rframe rcompressed rmulticast tbytes tpackets terrs tdrop tfifo tcolls tcarrier tcompressed
cat /proc/net/dev > "$cache".dev
while read iface rbytes rpackets rerrs rdrop rfifo rframe rcompressed rmulticast tbytes tpackets terrs tdrop tfifo tcolls tcarrier tcompressed; do
case "$iface" in
${interface}:)
[ "$i" = "up" ] && x2=${tbytes} || x2=${rbytes}
break;
;;
${interface}:*)
# Interface and tbytes got munged together
[ "$i" = "up" ] && x2=${rmulticast##*:} || x2=${iface##*:}
break;
;;
esac
done < "$cache".dev
printf "%s" "$x2" > "$cache"
rate=$((8*($x2 - $x1) / $t / 1024)) # in kbps
[ "$rate" -lt 0 ] && rate=0
if [ $rate -gt $NETWORK_THRESHOLD ]; then
case "$NETWORK_UNITS" in
bytes)
rate=$(($rate/8))
if [ "$rate" -gt 1048576 ]; then
fpdiv "$rate" 1048576 1
rate=${_RET}
unit="GB/s"
elif [ "$rate" -gt 1024 ]; then
fpdiv "$rate" 1024 1
rate=${_RET}
unit="MB/s"
else
unit="kB/s"
fi
;;
*)
# Default to bps
# Why 1000 and not 1024? http://en.wikipedia.org/wiki/Data_rate_units
if [ "$rate" -gt 1000000 ]; then
fpdiv "$rate" 1000000 1
rate=${_RET}
unit="Gb"
elif [ "$rate" -gt 1000 ]; then
fpdiv "$rate" 1000 1
rate=${_RET}
unit="Mb"
fi
;;
esac
[ -n "$rate" ] || continue
color b m w; printf "%s%s" "$symbol" "$rate"; color -; color m w; printf "%s" "$unit"; color --
else
rm -f "$BYOBU_RUN_DIR/status.$BYOBU_BACKEND/network"*
fi
done
}
# vi: syntax=sh ts=4 noexpandtab
Mini Shell