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#!/bin/sh # # shutil: some shared utilities used by all status scripts # # Copyright (C) 2011-2014 Dustin Kirkland # # Authors: Dustin Kirkland <kirkland@byobu.org> # Scott Moser <smoser@ubuntu.com> # # 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/>. # Define colors color_screen() { ESC="\005" case "$1" in "") return 0 ;; -) printf "$ESC{-}" ;; --) printf "$ESC{-} " ;; esc) printf "$ESC" ;; bold1) printf "$ESC{=b }" || printf "$ESC{= }" ;; bold2) printf "$ESC{+b }" || printf "$ESC{= }" ;; none) printf "$ESC{= }" ;; invert) printf "$ESC{=r }" ;; *) local attr fg bg case $# in 2) attr= ; fg=$1 ; bg=$2 ;; 3) attr=$1 ; fg=$2 ; bg=$3 ;; esac if [ "$MONOCHROME" = "1" ]; then fg= bg= fi printf "$ESC{=$attr $fg$bg}" ;; esac } color_map() { case "$1" in "k") _RET="black" ;; "r") _RET="red" ;; "g") _RET="green" ;; "y") _RET="yellow" ;; "b") _RET="blue" ;; "m") _RET="magenta" ;; "c") _RET="cyan" ;; "w") _RET="white" ;; "d") _RET="black" ;; "K") _RET="brightblack" ;; "R") _RET="brightred" ;; "G") _RET="brightgreen" ;; "Y") _RET="brightyellow" ;; "B") _RET="brightblue" ;; "M") _RET="brightmagenta" ;; "C") _RET="brightcyan" ;; "W") _RET="brightwhite" ;; *) _RET="$1" ;; esac } attr_map() { case "$1" in "d") _RET=,dim ;; "u") _RET=,underscore ;; "b") _RET=,bold ;; "r") _RET=,reverse ;; "s") _RET=,standout ;; "B") _RET=,blinking ;; "h") _RET=,hidden ;; "i") _RET=,italics ;; *) _RET= ;; esac } color_tmux() { local back fore attr case "$1" in "") return 0 ;; -) printf "#[default]#[fg=$BYOBU_LIGHT,bg=$BYOBU_DARK]" ;; --) printf "#[default]#[fg=$BYOBU_LIGHT]#[bg=$BYOBU_DARK] " ;; esc) printf "" ;; bold*) printf "#[default]#[fg=bold]" ;; none) printf "#[default]#[fg=$BYOBU_LIGHT,bg=$BYOBU_DARK]" ;; invert) printf "#[default]#[reverse]" ;; *) if [ "$#" = "2" ]; then color_map "$1"; back="$_RET" color_map "$2"; fore="$_RET" else attr_map "$1"; attr="$_RET" color_map "$2"; back="$_RET" color_map "$3"; fore="$_RET" fi [ "$MONOCHROME" = "1" ] && printf "#[default]" || printf "#[default]#[fg=$fore$attr,bg=$back]" ;; esac } color() { case "$BYOBU_BACKEND" in tmux) color_tmux "$@" ;; screen) color_screen "$@" ;; esac } # uncommented_lines(char=#) # does the standard input have lines that do not start with 'char'? uncommented_lines() { local line chr="${1:-#}" while read line; do [ "${line#${chr}}" = "${line}" ] && return 0; done return 1 } # newest(file,file,file..) # return the newest file in the list newest() { local c="$1" i for i in "$@"; do [ "$i" -nt "$c" ] && c="$i"; done [ -e "$c" ] && _RET="$c" } error() { printf "%s\n" "ERROR: " "$@" 1>&2 } fail() { [ $# -eq 0 ] || error "$@"; exit 1; } find_script() { # Allow for local status scripts if [ -x "$BYOBU_CONFIG_DIR/bin/$1" ]; then _RET="$BYOBU_CONFIG_DIR/bin/$1" elif [ -x "$BYOBU_PREFIX/lib/$PKG/$1" ]; then _RET="$BYOBU_PREFIX/lib/$PKG/$1" elif [ -x "$BYOBU_PREFIX/libexec/$PKG/$1" ]; then _RET="$BYOBU_PREFIX/libexec/$PKG/$1" else _RET="/dev/null" fi } # divide 2 integers and return a floating point number # third argument indicates how many digits after the decimal fpdiv() { local a=$1 b=$2 pres=${3:-3} local i=0 mp="10" whole="" part="" chunk="" n=0 while i=$(($i+1)) && [ $i -le $pres ]; do mp="${mp}0" chunk="${chunk}?" done n=$(((${mp}*${a})/${b})) # round up if necessary [ $((($n-5)/10)) = $(($n/10)) ] && n=$(($n+5)) # drop the last digit, which was only there for rounding n=${n%?} whole=${n%${chunk}} part=${n#${whole}} _RET=${whole:-0}${part:+.${part}} return } # rtrim(string,chars) rtrim() { local tab=' ' cr=" " local cur="${1}" set="[${2:- ${tab}${cr}}]" n="" while n=${cur%${set}} && [ "$n" != "$cur" ]; do cur=${n}; done _RET=${cur} } readfile() { local c="" r="" cr=" " OIFS="$IFS"; IFS=""; while read c; do r="$r${cr}$c" done IFS=$OIFS _RET=${r} return 0 } metadata_available() { # This is really ugly. We need a reliable, fast way of determining # if a metadata service is available, that does NOT slow down non-ec2 # machines. local x=0 cache="$BYOBU_CONFIG_DIR/.metadata_available" # First, check the cache if [ -s "$cache" ]; then # Metadata is non-empty, so we have metadata available x=1 else # Must seed the cache if [ -e /etc/ec2_version ] || [ -e /usr/sbin/update-grub-legacy-ec2 ]; then # This *looks* like a machine with metadata, so background a potentially slow check timeout 1 wget -q -O- --tries=1 http://169.254.169.254 </dev/null >"$cache" 2>/dev/null & sleep 0.02 [ -s "$cache" ] && x=1 fi fi [ "$x" = "1" ] } status_freq() { # Define status frequencies # Use prime number intervals, to decrease collisions, which # yields some less expensive status updates. # ~86000 ~1 day # ~600 ~10 minutes # ~180 ~3 minutes # ~60 ~1 minute case "$1" in apport) _RET=67 ;; arch) _RET=9999991 ;; battery) _RET=61 ;; color) _RET=9999991 ;; cpu_count) _RET=5 ;; cpu_freq) _RET=2 ;; cpu_temp) _RET=19 ;; custom) _RET=5 ;; date) _RET=9999991 ;; disk) _RET=13 ;; disk_io) _RET=3 ;; distro) _RET=9999991 ;; entropy) _RET=5 ;; fan_speed) _RET=23 ;; hostname) _RET=607 ;; ip_address) _RET=127 ;; load_average) _RET=2 ;; logo) _RET=9999991 ;; mail) _RET=5 ;; memory) _RET=13 ;; menu) _RET=9999991 ;; network) _RET=3 ;; notify_osd) _RET=9999991 ;; processes) _RET=7 ;; raid) _RET=59 ;; reboot_required) _RET=5 ;; release) _RET=599 ;; services) _RET=53 ;; session) _RET=9999991 ;; swap) _RET=19 ;; time) _RET=9999991 ;; time_binary) _RET=23 ;; time_utc) _RET=11 ;; trash) _RET=9999991 ;; updates_available) _RET=7 ;; uptime) _RET=29 ;; users) _RET=11 ;; whoami) _RET=86029 ;; wifi_quality) _RET=17 ;; *) _RET=9999991 ;; esac } get_now() { if [ -r /proc/uptime ]; then # return the integer part of the first item in /proc/uptime local s c read s c < /proc/uptime _RET=${s%.*} else _RET=$(date +%s); fi } get_network_interface() { if [ -n "$MONITORED_NETWORK" ]; then # Manual override _RET="$MONITORED_NETWORK" elif [ -e /proc/net/route ]; then # Linux systems, read route and interface from procfs local Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT while read Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT; do [ "$Mask" = "00000000" ] && break done < /proc/net/route _RET="$Iface" elif eval $BYOBU_TEST route >/dev/null 2>&1; then # Route command on path _RET=$(route get default|grep interface:|awk '{print $2}') elif [ -x "/sbin/route" ]; then # Mac OSX, shell out to the route command _RET=$(/sbin/route get default|grep interface:|awk '{print $2}') fi } get_distro() { local distro="${DISTRO}" if [ -n "$DISTRO" ]; then # user defined true elif [ -r "/etc/os-release" ]; then distro=$(. /etc/os-release && echo "$NAME") case "$distro" in Debian*) [ -r /etc/lsb-release ] && distro=$(. /etc/lsb-release && [ -n "$GOOGLE_ID" ] && echo "gLinux" || echo "Debian") ;; esac elif [ -r "/etc/issue" ]; then # lsb_release is *really* slow; try to use /etc/issue first local issue IFS="" read issue < /etc/issue case "$issue" in Ubuntu*) distro="Ubuntu"; ;; Debian*) distro="Debian" ;; Red\ Hat\ Enterprise*) distro="RHEL" ;; *) # assume first field is what we want distro="${issue%% *}"; ;; esac elif eval $BYOBU_TEST lsb_release >/dev/null 2>&1; then # If lsb_release is available, use it local r=$(lsb_release -s -d) case "$r" in Ubuntu*) # Use the -d if an Ubuntu LTS distro="Ubuntu" ;; *) # But for other distros the description # is too long, so build from -i and -r distro=$(lsb_release -s -i) ;; esac elif eval $BYOBU_TEST sw_vers >/dev/null 2>&1; then distro="$(sw_vers -productName)" elif eval $BYOBU_TEST uname >/dev/null 2>&1; then distro="$(uname -s)" else distro="Byobu" fi _RET="$distro" } # vi: syntax=sh ts=4 noexpandtab