#!/bin/sh
### BEGIN INIT INFO
# Provides:          wsgate
# Required-Start:    $network $local_fs
# Required-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: WebSocket gateway for FreeRDP-WebConnect
# Description:       The WebSockets gateway for FreeRDP-WebConnect allws you
#                    to provide browser-based RDP sessions.
### END INIT INFO

# Author: Fritz Elfert <wsgate@fritz-elfert.de>

# PATH should only include /usr/ if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC=wsgate             # Introduce a short description here
NAME=wsgate             # Introduce the short server's name here
DAEMON=/usr/sbin/wsgate # Introduce the server's location here
DAEMON_ARGS=""             # Arguments to run the daemon with
PIDFILE=/var/run/wsgate/$NAME.pid
SCRIPTNAME=/etc/init.d/$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 (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

#
# Function that starts the daemon/service
#
do_start()
{
    # Make shure, that bindhelper has correct permissions
    chown root.wsgate /usr/lib/wsgate/wsgate/bindhelper
    chmod 04754 /usr/lib/wsgate/wsgate/bindhelper
    # Create /var/run/wsgate
    mkdir -p /var/run/wsgate
    chown wsgate.wsgate /var/run/wsgate
    # Generate cert if necessary
    /usr/lib/wsgate/wsgate/keygen.sh

    # 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 --chuid wsgate:wsgate --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
        || return 1
    start-stop-daemon --start --quiet --chuid wsgate:wsgate --pidfile $PIDFILE --exec $DAEMON -- \
        -c /etc/wsgate.ini $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 --name $NAME
    RETVAL="$?"
    [ "$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
    # 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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