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### BEGIN INIT INFO
# Provides: tund
# Required-Start: $remote_fs $syslog
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: SSH reverse tunnel daemon
# Description: Provides reverse SSH tunnels to this host.
### END INIT INFO

# Author: Kyle Kingsbury <aphyr@aphyr.com>

# Do NOT "set -e"

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/bin
DESC="Tund"
NAME=tund
DAEMON=/usr/local/bin/tund
DAEMON_ARGS=""
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
# and status_of_proc is working.
. /lib/lsb/init-functions

#
# Function that starts the daemon/service
#
do_start()
{
  # Return
  # 0 if daemon has been started
  # 1 if daemon was already running
  # 2 if daemon could not be started
  start-stop-daemon --start --quiet --make-pidfile --background --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
    || return 1
  start-stop-daemon --start --quiet --make-pidfile --background --pidfile $PIDFILE --exec $DAEMON -- \
    $DAEMON_ARGS \
    || return 2
  # Add code here, if necessary, that waits for the process to be ready
  # to handle requests from services started subsequently which depend
  # on this one. As a last resort, sleep for some time.
}

#
# Function that stops the daemon/service
#
do_stop()
{
  # Return
  # 0 if daemon has been stopped
  # 1 if daemon was already stopped
  # 2 if daemon could not be stopped
  # other if a failure occurred
  start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE
  RETVAL="$?"
  [ "$RETVAL" = 2 ] && return 2
  # Wait for children to finish too if this is a daemon that forks
  # and if the daemon is only ever run from this initscript.
  # If the above conditions are not satisfied then add some other code
  # that waits for the process to drop all resources that could be
  # needed by services started subsequently. A last resort is to
  # sleep for some time.
  start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
  [ "$?" = 2 ] && return 2
  [ "$?" = 2 ] && return 2
  # Many daemons don't delete their pidfiles when they exit.
  rm -f $PIDFILE
  return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
  #
  # If the daemon can reload its configuration without
  # restarting (for example, when it is sent a SIGHUP),
  # then implement that here.
  #
  start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
  return 0
}

case "$1" in
  start)
  [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
  do_start
  case "$?" in
    0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
    2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
  esac
  ;;
  stop)
  [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
  do_stop
  case "$?" in
    0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
    2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
  esac
  ;;
  status)
       status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
       ;;
  #reload|force-reload)
  #
  # If do_reload() is not implemented then leave this commented out
  # and leave 'force-reload' as an alias for 'restart'.
  #
  #log_daemon_msg "Reloading $DESC" "$NAME"
  #do_reload
  #log_end_msg $?
  #;;
  restart|force-reload)
  #
  # If the "reload" option is implemented then remove the
  # 'force-reload' alias
  #
  log_daemon_msg "Restarting $DESC" "$NAME"
  do_stop
  case "$?" in
    0|1)
    do_start
    case "$?" in
      0) log_end_msg 0 ;;
      1) log_end_msg 1 ;; # Old process is still running
      *) log_end_msg 1 ;; # Failed to start
    esac
    ;;
    *)
      # Failed to stop
    log_end_msg 1
    ;;
  esac
  ;;
  *)
  #echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
  echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
  exit 3
  ;;
esac

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