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|
#!/bin/ash
if ! touch "/run"; then
echo "Only root can call this" >&2
exit 1
fi
DETACH=
if [ "$1" = "--detach" ]; then
DETACH=yes
shift
fi
if [ $# -lt 1 ]; then
echo "$0 [--detach] <reboot|poweroff> [delay_minutes]" >&2
exit 2
fi
DELAY=
TS=
MODE=$1
shift
while [ $# -gt 0 ]; do
if [ "$1" == "--time" ]; then
TS=$2
shift
elif [ "$1" == "--delay" ]; then
DELAY=$2
shift
else
break
fi
shift
done
[ -n "$1" ] && DELAY=$1
if [ -n "$TS" ]; then
# Sanity check for trigger by cron
# Sleep first so the clock has time to get adjusted
sleep 10
NOW=$(date +%s)
SHOULD=$(date -d "today $TS" +%s)
DIFF=$(( NOW - SHOULD ))
DIFF=${DIFF#-} # DIFF = Abs($DIFF)
if [ "$DIFF" -gt 90 ]; then
echo "Timestamp mismatch, ignoring request." >&2
exit 4
fi
fi
if [ "$MODE" != "reboot" ] && [ "$MODE" != "poweroff" ]; then
slxlog --echo "idleaction-failed-call" "Invalid call to idleaction-scheduled_action. Mode '$MODE' unknown." >&2
exit 3
fi
NUM=$(who | wc -l)
if [ -z "$DELAY" ] && [ "$NUM" = "0" ]; then
# Easy way out - machine is idle and no delay
(
# Detach, close all in/out fds - needed for some ssh clients to rpevent them from hanging
exec < /dev/null &> /dev/null
sleep 1
$MODE
) &
disown
exit 0
fi
runaction () {
# Someone logged in or delay requested
[ -n "$DETACH" ] && sleep 1
if [ -n "$DELAY" ] && [ "$DELAY" -gt 0 ]; then
echo "Doing $MODE in $DELAY minutes!"
sleep $(( DELAY * 60 ))
fi
for MINUTES in 5 X X X X X X X 3 X X X 2 X X X 1 X X X; do
NUM=$(who | wc -l)
[ "$NUM" = "0" ] && break
if [ "$MINUTES" != "X" ]; then
USERS=0
if [ "$MODE" = "reboot" ]; then
MESSAGE="Das System wird in $MINUTES Minute(n) neugestartet, bitte beenden Sie Ihre Sitzung.
The system will reboot in $MINUTES minute(s). Please save your work and end the session."
else
MESSAGE="Dieser Rechner wird in $MINUTES Minute(n) abgeschaltet, bitte beenden Sie Ihre Sitzung.
The system will power off in $MINUTES minute(s). Please save your work and end the session."
fi
for d in $(who | awk '{print $2 " " $NF}' | sort -u); do
if [ "${d:0:1}" = ":" ]; then
# X11
export DISPLAY=$d
export XAUTHORITY=$(ps a | grep " $DISPLAY " | grep -o -- '-auth.*$' | grep -m1 -v grep | awk '{print $2}')
# TODO: Don't look... We need to pick a proper util for this
/opt/openslx/cups/printergui --error "$MESSAGE" &
unset DISPLAY XAUTHORITY
USERS=$(( $USERS + 1 ))
elif [ "${d:0:3}" = "tty" ]; then
# Regular tty
cat > "/dev/$d" <<-EOF
*
***************************
$MESSAGE
***************************
*
EOF
USERS=$(( $USERS + 1 ))
elif [ "${d:0:3}" = "pts" ]; then
# pts - xterm or ssh session
cat > "/dev/pts/${d:3}" <<-EOF
*
***************************
$MESSAGE
***************************
*
EOF
USERS=$(( $USERS + 1 ))
fi
done
FILE=$(mktemp)
who > "$FILE"
slxlog "idleaction-busy" "Postponed $MODE ($MINUTES minutes max.) - $USERS user(s) still active"
sleep 1
rm -- "$FILE"
fi
sleep 15
done
$MODE
}
if [ -n "$DETACH" ]; then
(
# Detach, see above
exec < /dev/null &> /dev/null
runaction
) &
disown
exit 0
fi
runaction
exit 0
|
