#! /bin/sh
### BEGIN INIT INFO
# Provides:          bareos-fd
# Required-Start:    $network $remote_fs $time $syslog
# Required-Stop:     $network $remote_fs $time $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Bareos File Daemon
# Description:       Bareos is a network backup and restore program.
#                    The Bareos File Daemon backup the local system
#                    on behalf of the Bareos Director and
#                    sends the data to the Bareos Storage Daemon.
#                    It also receives data from restores.
### END INIT INFO

DESC="Bareos File Daemon"
NAME=bareos-fd
NETWORK_PORT=9102
DAEMON_USER=root
DAEMON_GROUP=bareos

DAEMON=/usr/sbin/$NAME
if [ "x${DAEMON_USER}" != "x" ]; then
   DAEMON_USERGROUP="--chuid ${DAEMON_USER}"
   if [ "x${DAEMON_GROUP}" != "x" ]; then
      DAEMON_USERGROUP="${DAEMON_USERGROUP}:${DAEMON_GROUP}"
   fi
fi
DAEMON_ARGS=
PIDFILE=/var/lib/bareos/${NAME}.${NETWORK_PORT}.pid
SCRIPTNAME=/etc/init.d/$NAME
PATH=/sbin:/usr/sbin:/bin:/usr/bin

# 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

# workaround, if status_of_proc is not defined (Ubuntu 8.04)
if ! command -v status_of_proc >/dev/null; then
status_of_proc ()
{
    local pidfile daemon name status OPTIND

    pidfile=
    OPTIND=1
    while getopts p: opt ; do
        case "$opt" in
            p)  pidfile="$OPTARG";;
        esac
    done
    shift $(($OPTIND - 1))

    if [ -n "$pidfile" ]; then
        pidfile="-p $pidfile"
    fi
    daemon="$1"
    name="$2"

    status="0"
    pidofproc $pidfile $daemon >/dev/null || status="$?"
    if [ "$status" = 0 ]; then
        log_success_msg "$name is running"
        return 0
    elif [ "$status" = 4 ]; then
        log_failure_msg "could not access PID file for $name"
        return $status
    else
        log_failure_msg "$name is not running"
        return $status
    fi
}
fi

#
# 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 --pidfile $PIDFILE $DAEMON_USERGROUP --exec $DAEMON --test > /dev/null \
        || return 1
    start-stop-daemon --start --quiet --pidfile $PIDFILE $DAEMON_USERGROUP --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.
    TIMEOUT=5
    while [ $TIMEOUT -gt 0 ] && ! do_check; do
        sleep 1
        TIMEOUT=$((TIMEOUT-1))
    done
    do_check
    return $?
}

#
# 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 $DAEMON_USERGROUP --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 $DAEMON_USERGROUP --exec $DAEMON
    [ "$?" = 2 ] && return 2
    # Many daemons don't delete their pidfiles when they exit.
    rm -f $PIDFILE
    return "$RETVAL"
}

#
# Function that checks if daemon is running
#
do_check()
{
    STATUS=2
    # Ubuntu 8.04 does not support "lsof -s "TCP:LISTEN", therefore "grep '(LISTEN)'" is used
    pidofproc -p $PIDFILE $DAEMON >/dev/null && lsof -i "TCP:${NETWORK_PORT}" | grep --quiet '(LISTEN)' && STATUS=0
    return $STATUS
}

#
# 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)
    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|status|restart|reload|force-reload}" >&2
    exit 3
    ;;
esac

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