#!/bin/sh
#
# red5    red5 initscript
#
# Author: Simon Eisenmann <simon@struktur.de>.
#

set -e

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DESC="AMF and RTMP server"
NAME=red5
RED5_HOME=/usr/share/red5-0.9.1
DAEMON=$RED5_HOME/$NAME.sh
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME

# Gracefully exit if the package has been removed.
test -x $DAEMON || exit 0

#Include init-functions
. /lib/lsb/init-functions

# Read config file if it is present.
if [ -r /etc/default/$NAME ]
then
. /etc/default/$NAME
fi

#
# Function that starts the daemon/service.
#
d_start() {
start-stop-daemon --start --pidfile $PIDFILE \
--chdir $RED5_HOME --background --make-pidfile \
--exec $DAEMON
}

#
# Function that stops the daemon/service.
#
d_stop() {
start-stop-daemon --stop --quiet --pidfile $PIDFILE \
--name java
rm -f $PIDFILE
}

reload_server() {
    [ ! -f "$PIDFILE" ] && return 1
    pid=pidofproc $PIDFILE # This is the daemon's pid
    # Send a SIGHUP
    kill -1 $pid
    return $?
}

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
}



running_pid() {
# Check if a given process pid's cmdline matches a given name
    pid=$1
    [ -z "$pid" ] && return 1
    [ ! -d /proc/$pid ] &&  return 1
    cmd=`cat /proc/$pid/cmdline | tr "\000" "\n"|tail -n 1 |cut -d : -f 1`
    exe=`basename $cmd`
    # Is this the expected server
    [ "x$exe" != "xorg.red5.server.Bootstrap" ] && 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 || return 1
    return 0
}

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 d_start ; then
            # NOTE: Some servers might die some time after they start,
            # this code will detect this issue if STARTTIME is set
            # to a reasonable value
            [ -n "$STARTTIME" ] && sleep $STARTTIME # Wait some time 
            if  running ;  then
                # It's ok, the server started and is running
                log_end_msg 0
            else
                # It is not running after we did start
                log_end_msg 1
            fi
        else
            # Either we could not start it
            log_end_msg 1
        fi
;;
stop)
log_daemon_msg "Stopping $DESC" "$NAME"
        if running ; then
            # Only stop the server if we see it running
            errcode=0
           d_stop || errcode=$?
            log_end_msg $errcode
        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"
            errcode=0
            force_stop || errcode=$?
            log_end_msg $errcode
        fi
        ;;
restart|force-reload)
log_daemon_msg "Restarting $DESC" "$NAME"
        errcode=0
        d_stop || errcode=$?
        # Wait some sensible amount, some server need this
        [ -n "$DIETIME" ] && sleep $DIETIME
        d_start || errcode=$?
        [ -n "$STARTTIME" ] && sleep $STARTTIME
        running || errcode=$?
        log_end_msg $errcode
        ;;
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)."
        ;;

*)
echo "Usage: $SCRIPTNAME {start|stop|force-stop|restart|force-reload|status}" >&2
exit 1
;;
esac

exit 0