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#!/bin/sh /etc/rc.common
START=97
PIDFILE="/tmp/run/watchcat"
append_string() {
local varname="$1"; local add="$2"; local separator="${3:- }"; local actual
eval "actual=\$$varname"
new="${actual:+$actual$separator}$add"
eval "$varname=\$new"
}
timetoseconds() {
local time=$1
unset seconds
{ [ "$time" -ge 1 ] 2> /dev/null && seconds="$time"; } || \
{ [ "${time%s}" -ge 1 ] 2> /dev/null && seconds="${time%s}"; } || \
{ [ "${time%m}" -ge 1 ] 2> /dev/null && seconds=$((${time%m}*60)); } || \
{ [ "${time%h}" -ge 1 ] 2> /dev/null && seconds=$((${time%h}*3600)); } || \
{ [ "${time%d}" -ge 1 ] 2> /dev/null && seconds=$((${time%d}*86400)); }
}
load_watchcat() {
config_get period $1 period
config_get mode $1 mode "always"
config_get pinghosts $1 pinghosts "8.8.8.8"
config_get pingperiod $1 pingperiod
config_get forcedelay $1 forcedelay "0"
# Fix potential typo in mode (backward compatibility).
[ "$mode" = "allways" ] && mode="always"
error=""
timetoseconds "$period"
period="$seconds"
[ "$period" -ge 1 ] \
|| append_string "error" 'period is not a valid time value (ex: "30"; "4m"; "6h"; "2d")' "; "
[ "$mode" = "always" -o "$mode" = "ping" ] \
|| append_string "error" "mode must be 'always' or 'ping'" "; "
[ -n "$pinghosts" -o "$mode" = "always" ] \
|| append_string "error" "pinghosts must be set when in 'ping' mode" "; "
[ "$mode" = "ping" ] && {
if [ -n "$pingperiod" ]
then
timetoseconds "$pingperiod"
pingperiod="$seconds"
if [ "$pingperiod" -ge 0 ]
then
[ "$pingperiod" -le "$period" ] \
|| append_string "error" "pingperiod must be less than period" "; "
else
append_string "error" 'pingperiod is not a valid time value (ex: "30"; "4m"; "6h"; "2d")' "; "
fi
else
pingperiod="$((period/20))"
fi
}
[ "$pingperiod" -lt "$period" -o "$mode" = "always" ] \
|| append_string "error" "pingperiod is not recognized" "; "
[ "$forcedelay" -ge 0 ] \
|| append_string "error" "forcedelay must be a integer greater or equal than 0, where 0 means disabled" "; "
[ -n "$error" ] && { logger -p user.err -t "watchcat" "reboot program $1 not started - $error"; return; }
if [ "$mode" = "always" ]
then
/usr/bin/watchcat.sh "always" "$period" "$forcedelay" &
logger -p user.info -t "watchcat" "started task (mode=$mode;period=$period;forcedelay=$forcedelay)"
else
/usr/bin/watchcat.sh "period" "$period" "$forcedelay" "$pinghosts" "$pingperiod" &
logger -p user.info -t "watchcat" "started task (mode=$mode;period=$period;pinghosts=$pinghosts;pingperiod=$pingperiod;forcedelay=$forcedelay)"
fi
echo $! >> "${PIDFILE}.pids"
}
stop() {
if [ -f "${PIDFILE}.pids" ]
then
logger -p user.info -t "watchcat" "stopping all tasks"
while read pid
do
kill "$pid"
done < "${PIDFILE}.pids"
rm "${PIDFILE}.pids"
logger -p user.info -t "watchcat" "all tasks stopped"
else
logger -p user.info -t "watchcat" "no tasks running"
fi
}
start() {
[ -f "${PIDFILE}.pids" ] && stop
config_load system
if [ -n "$(uci show system.@watchcat[0])" ] # at least one watchcat section exists
then
logger -p user.info -t "watchcat" "starting all tasks"
config_foreach load_watchcat watchcat
logger -p user.info -t "watchcat" "all tasks started"
else
logger -p user.info -t "watchcat" "no tasks defined"
fi
}