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#!/bin/sh

#

# lsh-utils     Start/stop secure shell server.

#               Written by Timshel Knoll <timshel@debian.org>

#               Updated by Stefan Pfetzing <dreamind@dreamind.de>

#

### BEGIN INIT INFO

# Provides:          sshd

# Required-Start:    $local_fs $remote_fs $syslog $named $network

# Required-Stop:     $local_fs $remote_fs $syslog $named $network

# Default-Start:     2 3 4 5

# Default-Stop:      0 1 6

# Short-Description: lsh secure shell server

### END INIT INFO

PATH=/sbin:/bin:/usr/sbin:/usr/bin

DAEMON=/usr/sbin/lshd

NAME=lshd

DESC="secure shell v2 server"

CONFIG=/etc/default/lsh-server

RANDOM_SEED="/var/spool/lsh/yarrow-seed-file"

HOST_KEY="/etc/lsh_host_key"

test -f $DAEMON || exit 0

set -e

if [ -r "$CONFIG" ]; then

   . "$CONFIG"

fi

if [ x"$LSHD_PORT" = x ]; then

   LSHD_PORT="22"

fi

case "$ENABLE_SFTP" in

  true|y*|Y*)

    SFTP_FLAG="--subsystems sftp=/usr/lib/lsh-server/sftp-server"

    ;;

  *)

    SFTP_FLAG=""

    ;;

esac

if [ "$1" != "stop" -a "$1" != "graceful-stop" ]; then

   if [ ! -f "$RANDOM_SEED" ]; then

      echo -n "Creating lsh random seed file (this only needs to be done once): $RANDOM_SEED"

      DIR=$(dirname "$RANDOM_SEED")

      mkdir -p "$DIR"

      chmod 700 "$DIR"

      dd if=/dev/random "of=$RANDOM_SEED" bs=1 count=32 2>/dev/null

      chmod 600 "$RANDOM_SEED"

      echo "."

   fi

   if [ ! -f "$HOST_KEY" ]; then

      echo -n "Creating lsh host key (this only needs to be done once): $HOST_KEY"

      lsh-keygen --server | \

         lsh-writekey --server --output-file "$HOST_KEY"

      if [ ! -f "$HOST_KEY" ]; then

         echo " failed! not starting lshd"

         exit 0

      fi

      echo "."

   fi

fi

case "$1" in

  start)

        echo -n "Starting $DESC: $NAME"

        start-stop-daemon --start --quiet --pidfile /var/run/$NAME.pid \

                --background --make-pidfile --exec $DAEMON -- \

                --port "$LSHD_PORT" $SFTP_FLAG

        echo "."

        ;;

  stop|graceful-stop)

        echo -n "Gracefully stopping $DESC: $NAME"

        # Signal 1 causes the "old" lsh to close up shop on its port, but

        # keeps running until all active connections have been closed

        start-stop-daemon --stop --signal 1 --quiet --pidfile \

                 /var/run/$NAME.pid --oknodo --exec $DAEMON

        # Remove the old pid file, the server will exit when ready

        rm -f /var/run/$NAME.pid

        echo "."

        ;;

  #reload)

        # Signal 1 causes the "old" lsh to close up shop on its port, but

        # keeps running until all active connections have been closed

        #echo -n "Reloading $DESC configuration files."

        #start-stop-daemon --stop --signal 1 --quiet --pidfile \

        #       /var/run/$NAME.pid --exec $DAEMON

        #;;

  restart|force-reload)

        #

        #       If the "reload" option is implemented, move the "force-reload"

        #       option to the "reload" entry above. If not, "force-reload" is

        #       just the same as "restart".

        #

        echo -n "Restarting $DESC: $NAME"

        start-stop-daemon --stop --signal 1 --quiet --pidfile \

                /var/run/$NAME.pid --oknodo --exec $DAEMON

        # Remove the old pid file, the old server will exit when ready

        rm -f /var/run/$NAME.pid

        sleep 1

        start-stop-daemon --start --quiet --pidfile /var/run/$NAME.pid \

                --background --make-pidfile --exec $DAEMON -- \

                --port "$LSHD_PORT" $SFTP_FLAG

        echo "."

        ;;

  *)

        echo "Usage: /etc/init.d/lsh-utils {start|stop|restart|force-reload}" >&2

        exit 1

        ;;

esac

exit 0