#!/bin/sh -e
### BEGIN INIT INFO
# Provides:          minidlna
# Required-Start:    $network $local_fs $remote_fs
# Required-Stop::    $network $local_fs $remote_fs
# Should-Start:      $all
# Should-Stop:       $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start minidlna at boot time
# Description:       Manage the minidlna daemon, a DLNA/UPnP-AV media server.
### END INIT INFO

unset USER

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="DLNA/UPnP-AV media server"
NAME=minidlna
DAEMON=/usr/bin/minidlna
PIDDIR=/run/$NAME
PIDFILE=$PIDDIR/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
DEFAULT=/etc/default/$NAME

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

# Read configuration variable file if it is present
[ -r $DEFAULT ] && . $DEFAULT

# 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

# Do not start the daemon if NO_START is enabled in DEFAULT
if [ "$START_DAEMON" != "yes" ] && [ "$1" != "stop" ]; then
    log_warning_msg "$NAME: Not starting $DESC."
    log_warning_msg "$NAME: Disabled in $DEFAULT."
    exit 0
fi

# Set the default configuration file
if [ -z $CONFIGFILE ]; then
    CONFIGFILE=/etc/minidlna.conf
fi

# Set the default log file
if [ -z $LOGFILE ]; then
    LOGFILE=/var/log/minidlna.log
fi

# Run as `minidlna' if USER is not specified or is `root'
if [ -z $USER ]; then
    USER=minidlna
fi

# If no group is specified, use USER
if [ -z $GROUP ]; then
    GROUP=$USER
fi

DAEMON_ARGS="-f $CONFIGFILE -P $PIDFILE $DAEMON_OPTS"

#
# 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
    touch $LOGFILE && chown $USER:$GROUP $LOGFILE || return 2
    if [ ! -d $PIDDIR ]; then
        mkdir $PIDDIR || return 2
    fi
    chown $USER:$GROUP $PIDDIR || return 2

    start-stop-daemon --start --quiet --pidfile $PIDFILE \
        --chuid $USER:$GROUP --exec $DAEMON --test > /dev/null \
        || return 1
    start-stop-daemon --start --quiet --pidfile $PIDFILE \
        --chuid $USER:$GROUP --exec $DAEMON -- \
        $DAEMON_ARGS \
        || return 2
}

#
# 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.
    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 -rf $PIDDIR
    return "$RETVAL"
}

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) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
    esac
    ;;
  status)
       status_of_proc -p "$PIDFILE" "$DAEMON" "$NAME" && exit 0 || exit $?
       ;;
  restart|force-reload)
    log_daemon_msg "Restarting $DESC" "$NAME"
    do_stop
    case "$?" in
      0|1)
        if [ "$1" = "force-reload" ]; then
            # Rescan the collection
            DAEMON_ARGS="$DAEMON_ARGS -R"
        fi
        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|force-reload}" >&2
    exit 3
    ;;
esac

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