File fb-server of Package frozen-bubble

#! /bin/sh
#
# Author: Dirk Stoecker <frozenbubble@dstoecker.de>
#
# /etc/init.d/fb-server
#
#   and its symbolic link
#
# /sbin/rcfb-server
#
# System startup script for the Frozen Bubble server
#
### BEGIN INIT INFO
# Provides: fb-server frozen-bubble-server
# Required-Start: $network $syslog $remote_fs
# Required-Stop: $network $syslog $remote_fs
# Default-Start: 3 5
# Default-Stop: 0 1 2 4 6
# Short-Description: Frozen Bubble server
# Description: Frozen Bubble multiple server autohandler.
#	Just create one or more /etc/fb-server*.conf file(s) and handle
#	them with this init script.
### END INIT INFO

FB_SERVER_BIN=/usr/bin/fb-server
FB_USER=nobody

test -x $FB_SERVER_BIN || { echo "$FB_SERVER_BIN not installed";
	if [ x"$1" = x"stop" ]; then exit 0; 
	else exit 5; fi; }

# Shell functions sourced from /etc/rc.status:
#      rc_check         check and set local and overall rc status
#      rc_status        check and set local and overall rc status
#      rc_status -v     ditto but be verbose in local rc status
#      rc_status -v -r  ditto and clear the local rc status
#      rc_failed        set local and overall rc status to failed
#      rc_reset         clear local rc status (overall remains)
#      rc_exit          exit appropriate to overall rc status
. /etc/rc.status

# First reset status of this service
rc_reset

# Return values acc. to LSB for all commands but status:
# 0 - success
# 1 - misc error
# 2 - invalid or excess args
# 3 - unimplemented feature (e.g. reload)
# 4 - insufficient privilege
# 5 - program not installed
# 6 - program not configured
# 7 - program is not running
#
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signalling is not supported) are
# considered a success.

CONFFILES=/etc/fb-server*.conf
PIDDIR="/run/fb-server/"
mkdir -p $PIDDIR

case "$1" in
    start)
        for file in $CONFFILES; do
            CMD=`ps -A -o %a --no-headers | grep -e "$FB_SERVER_BIN -c $file" | grep -v grep`
            if [ -z "$CMD" ]; then
              	echo -n "Starting Frozen bubble server ($file)"
                su -l $FB_USER -s /bin/sh -c "$FB_SERVER_BIN -c $file >/dev/null" && echo $( ps -A -o "%p %a" --no-headers | grep -e "$FB_SERVER_BIN -c $file" | grep -v grep | awk '" " { print $1 }') > $PIDDIR/`basename $file .conf`.pid
              	rc_status -v
            fi
        done
        ;;
    stop)
        for file in $CONFFILES; do
            CMD=`ps -A -o %p%a --no-headers | grep -e "$FB_SERVER_BIN -c $file" | grep -v grep`
            PID=`echo $CMD | perl -pe 's/^ *(\d+) .*$/$1/'`
            if [ "$PID" ]; then
              echo "Shutting down Frozen bubble server ($file) "
              test -f $PIDDIR/`basename $file .conf`.pid && rm $PIDDIR/`basename $file .conf`.pid
              kill -TERM $PID
              rc_status -v
            fi
        done
        ;;
    reload) # no reloading possible, do a restart
        ## Stop the service and regardless of whether it was
        ## running or not, start it again.
        $0 stop
        sleep 2
        $0 start
        # Remember status and be quiet
        rc_status
        ;;
	try-restart|condrestart)
	    ## Do a restart only if the service was active before.
	    ## Note: try-restart is now part of LSB (as of 1.9).
	    ## RH has a similar command named condrestart.
	    if test "$1" = "condrestart"; then
	        echo "${attn} Use try-restart ${done}(LSB)${attn} rather than condrestart ${warn}(RH)${norm}"
		fi
		$0 status
		if test $? = 0; then
		    $0 restart
	    else
            rc_reset    # Not running is not a failure.
	    fi
       # Remember status and be quiet
       rc_status
       ;;
    restart)
        ## Stop the service and regardless of whether it was
        ## running or not, start it again.
        $0 stop
        sleep 2
        $0 start
        # Remember status and be quiet
        rc_status
        ;;
	status)
		echo "Checking for Frozen Bubble servers: "
		RUNNING=""
		for file in $CONFFILES; do
			CMD=`ps -A -o %p%a --no-headers | grep -e "$FB_SERVER_BIN -c $file" | grep -v grep`
			PID=`echo $CMD | perl -pe 's/^ *(\d+) .*$/$1/'`
				if [ "$PID" ]; then
                                   echo "+ Frozen bubble server ($file) running "
				   RUNNING="1"
                                else 
                                   echo "+ Frozen bubble server ($file) unused "
				fi
		done
                if [ ! $RUNNING ]; then
                    rc_failed 3
                else
                    rc_failed 0
                fi
		rc_status -v
	;;
	probe)
		for file in $CONFFILES; do
			test $file -nt $PIDDIR/`basename $file .conf`.pid && echo "$file reload"
		done
	;;
    *)
        echo "Usage: $0 {start|stop|status|try-restart|restart|reload|probe}"
        exit 1
        ;;
esac
rc_exit