File: init

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darkice 1.3-0.1
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#!/bin/sh 
#
# Copyright (c) 2007 Javier Fernandez-Sanguino <jfs@debian.org>
# Copyright (c) 2009 Jochen Friedrich <jochen@scram.de>
#
# This is free software; you may redistribute it and/or modify
# it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2,
# or (at your option) any later version.
#
# This is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License with
# the Debian operating system, in /usr/share/common-licenses/GPL;  if
# not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
#
### BEGIN INIT INFO
# Provides:          darkice
# Required-Start:    $network $local_fs $remote_fs
# Required-Stop:     $network $local_fs $remote_fs
# Should-Start:      
# Should-Stop:       
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Live audio streamer
# Description:       DarkIce is an IceCast, IceCast2 and ShoutCast
#                    live audio streamer.
### END INIT INFO

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

NAME=darkice
DAEMON=/usr/bin/$NAME
DESC="Live audio streamer"
LOGDIR=/var/log
USER=nobody
GROUP=nogroup

PIDFILE=/var/run/$NAME.pid 

test -x $DAEMON || exit 0

. /lib/lsb/init-functions

# Default options, these can be overriden by the information
# at /etc/default/$NAME
DAEMON_OPTS=""          # Additional options given to the server 

DIETIME=2               # Time to wait for the server to die, in seconds
                        # If this value is set too low you might not
                        # let some servers to die gracefully and
                        # 'restart' will not work

# Include defaults if available
if [ -f /etc/default/$NAME ] ; then
	. /etc/default/$NAME
fi

# Use this if you want the user to explicitly set 'RUN' in 
# /etc/default/
if [ "x$RUN" != "xyes" ] ; then
    exit 0
fi

set -e

running_pid() {
# Check if a given process pid's cmdline matches a given name
    pid=$1
    name=$2
    [ -z "$pid" ] && return 1 
    [ ! -d /proc/$pid ] &&  return 1
    cmd=`cat /proc/$pid/cmdline | tr "\000" "\n"|head -n 1 |cut -d : -f 1`
    # Is this the expected server
    [ "$cmd" != "$name" ] &&  return 1
    return 0
}

running() {
# Check if the process is running looking at /proc
# (works for all users)

    # No pidfile, probably no daemon present
    [ ! -f "$PIDFILE" ] && return 1
    pid=`cat $PIDFILE`
    running_pid $pid $DAEMON || return 1
    return 0
}

start_server() {
# Start the process using the wrapper
        start-stop-daemon --start --quiet --pidfile $PIDFILE \
            --background --chuid $USER:$GROUP --exec $DAEMON -- $DAEMON_OPTS
        errcode=$?
	return $errcode
}

stop_server() {
# Stop the process using the wrapper
        start-stop-daemon --stop --quiet --pidfile $PIDFILE \
            --exec $DAEMON
        errcode=$?
	return $errcode
}

force_stop() {
# Force the process to die killing it manually
	[ ! -e "$PIDFILE" ] && return
	if running ; then
		kill -15 $pid
	# Is it really dead?
		sleep "$DIETIME"s
		if running ; then
			kill -9 $pid
			sleep "$DIETIME"s
			if running ; then
				echo "Cannot kill $NAME (pid=$pid)!"
				exit 1
			fi
		fi
	fi
	rm -f $PIDFILE
}


case "$1" in
  start)
	log_daemon_msg "Starting $DESC " "$NAME"
        # Check if it's running first
        if running ;  then
            log_progress_msg "apparently already running"
            log_end_msg 0
            exit 0
        fi
        if start_server && running ;  then
            # It's ok, the server started and is running
            log_end_msg 0
        else
            # Either we could not start it or it is not running
            # after we did
            # NOTE: Some servers might die some time after they start,
            # this code does not try to detect this and might give
            # a false positive (use 'status' for that)
            log_end_msg 1
        fi
	;;
  stop)
        log_daemon_msg "Stopping $DESC" "$NAME"
        if running ; then
            # Only stop the server if we see it running
            stop_server
            log_end_msg $?
        else
            # If it's not running don't do anything
            log_progress_msg "apparently not running"
            log_end_msg 0
            exit 0
        fi
        ;;
  force-stop)
        # First try to stop gracefully the program
        $0 stop
        if running; then
            # If it's still running try to kill it more forcefully
            log_daemon_msg "Stopping (force) $DESC" "$NAME"
            force_stop
            log_end_msg $?
        fi
	;;
  restart|force-reload)
        log_daemon_msg "Restarting $DESC" "$NAME"
        stop_server
        # Wait some sensible amount, some server need this
        [ -n "$DIETIME" ] && sleep $DIETIME
        start_server
        running
        log_end_msg $?
	;;
  status)

        log_daemon_msg "Checking status of $DESC" "$NAME"
        if running ;  then
            log_progress_msg "running"
            log_end_msg 0
        else
            log_progress_msg "apparently not running"
            log_end_msg 1
            exit 1
        fi
        ;;
  reload)
        log_warning_msg "Reloading $NAME daemon: not implemented, as the daemon"
        log_warning_msg "cannot re-read the config file (use restart)."
        ;;

  *)
	N=/etc/init.d/$NAME
	echo "Usage: $N {start|stop|force-stop|restart|force-reload|status}" >&2
	exit 1
	;;
esac

exit 0