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#!/bin/bash
declare CURRENT_PTS=$(tty | sed -e s-/--g -e s/dev//g)
declare CURRENT_UID=$(id -u)
declare CURRENT_UNAME=$(id -un)
declare -a MPIDS
MODE=$1
MPIDS=( $(ls /var/run/vyatta/monitor/*.pid 2> /dev/null ) )
for pidfile in "${MPIDS[@]}"; do
pid=$(<$pidfile)
procname=$(cat /proc/$pid/cmdline 2>/dev/null)
if [[ "$procname" =~ "tail" ]] ; then
# Clean up tail processes that didn't die on logout
pts=${pidfile##*-pts}
pts=${pts%%.pid}
# If the process isn't attaced to the current PTY
if [[ "pts$pts" != "$CURRENT_PTS" ]]; then
# If I owned this process
if cat /proc/$pid/status | grep -q "Uid:.*$CURRENT_UID" ; then
# If I'm no longer on the pty that process started on
if ! who | grep -q "$CURRENT_UNAME.*pts/$pts" ; then
kill $pid
rm -rf $pidfile
fi
fi
elif [[ "$MODE" == "LOGOUT" ]]; then
# on logout kill all monitors
kill $pid
rm -rf $pidfile
fi
else
# Clean up killed tail processes
rm -rf $pidfile
fi
done
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