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#!/usr/bin/env bash

export TMPDIR="$SELFTEST_TMPDIR"

SERVERNAME="$ENVNAME"
[ -z "$SERVERNAME" ] && SERVERNAME="base"
basedir=$TMPDIR

[ -r $basedir/$SERVERNAME.pid ] && {
    for i in {2..100}; do
	if [ ! -r "$basedir/${SERVERNAME}-$i.pid" ]; then
	    SERVERNAME="${SERVERNAME}-$i"
	    break
	fi
    done
}

rm -f $basedir/$SERVERNAME.{launch,log,parent.pid,pid,status}

# set most of the environment vars we have in the screen session too
_ENV=""
printenv |
  egrep -v '^TERMCAP|^WINDOW|^SHELL|^STY|^SHLVL|^SAMBA_VALGRIND|\$' |
  egrep '^[A-Z]' |
  sed "s/\(^[^=]*=\)\(.*\)/export \1'\2'/g" > $basedir/$SERVERNAME.vars

cat <<EOF > $basedir/$SERVERNAME.launch
cd $PWD
 echo \$\$ > $basedir/$SERVERNAME.pid
 . $basedir/$SERVERNAME.vars
 echo "\$(date) starting $SERVERNAME" >> $basedir/$SERVERNAME.log
 $@
 echo \$? > $basedir/$SERVERNAME.status
 read parent < $basedir/$SERVERNAME.parent.pid
 kill \$parent
EOF
pid=$$

cleanup() {
    trap "exit 1" SIGINT SIGTERM SIGPIPE
    [ -r $basedir/$SERVERNAME.status ] && {
	read status < $basedir/$SERVERNAME.status
	echo "$(date) samba exited with status $status" >> $basedir/$SERVERNAME.log
	exit $status
    }

    case $ENVNAME in
	*.nmbd|*.smbd|*.winbindd|*.samba)
	    kill $(cat $basedir/../"${ENVNAME%\.*}"/pid/"${ENVNAME##*\.}".pid)
	    ;;
    esac

    read pid < $basedir/$SERVERNAME.pid
    echo "$(date) Killing samba pid $pid from $$" >> $basedir/$SERVERNAME.log
    if [ "$pid" = "$$" ]; then
	exit 1
    fi
    kill -9 $pid 2>&1
    exit 1
}

echo $$ > $basedir/$SERVERNAME.parent.pid
trap cleanup SIGINT SIGTERM SIGPIPE

if [[ "$TMUX" ]]; then
    TMUX_CMD=tmux
    if [[ $TMUX = *tmate* ]]; then
        TMUX_CMD=tmate
    fi

    $TMUX_CMD new-window -n test:$SERVERNAME "bash $basedir/$SERVERNAME.launch"

    # tmux seems to lag a bit for new sessions. Don't create them too
    # quickly one after another
    sleep .1
else
    screen -r -X screen -t test:$SERVERNAME bash $basedir/$SERVERNAME.launch
fi
echo "$(date) waiting in $$" >> $basedir/$SERVERNAME.log
read stdin_var
echo "$(date) EOF on stdin" >> $basedir/$SERVERNAME.log

case $ENVNAME in
    *.nmbd|*.smbd|*.winbindd|*.samba)
	kill $(cat $basedir/../"${ENVNAME%\.*}"/pid/"${ENVNAME##*\.}".pid)
	;;
esac

read pid < $basedir/$SERVERNAME.pid
echo "$(date) killing $pid" >> $basedir/$SERVERNAME.log
kill $pid 2> /dev/null
echo "$(date) exiting" >> $basedir/$SERVERNAME.log
exit 0