#! /bin/sh

### BEGIN INIT INFO
# Provides:          ngircd
# Required-Start:    $network $local_fs $remote_fs
# Required-Stop:     $network $local_fs $remote_fs
# Should-Start:      $named $syslog
# Should-Stop:       $named $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Next generation IRC daemon
# Description:       Simple IRC daemon written from scratch
### END INIT INFO

# Author: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>

# Do NOT "set -e"

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC='Next generation IRC daemon'
NAME='ngircd'
DAEMON="/usr/sbin/$NAME"
DAEMON_ARGS=""
PIDDIR='/var/run/ngircd'
PIDFILE="$PIDDIR/$NAME.pid"
SCRIPTNAME="/etc/init.d/$NAME"
DAEMONUSER='irc'	# also group

# 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

# Assert PIDDIR
[ -d "$PIDDIR" ] || mkdir -p "$PIDDIR"
chown "$DAEMONUSER:$DAEMONUSER" "$PIDDIR"

# Assert DAEMONUSER's home
DAEMONHOME=$(getent passwd "$DAEMONUSER" | cut -d: -f6)
[ -d "$DAEMONHOME" ] || mkdir -p "$DAEMONHOME"
chown "$DAEMONUSER:$DAEMONUSER" "$DAEMONHOME"

#
# 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 "$PIDFILE" --exec "$DAEMON" \
	--test > /dev/null || return 1
    start-stop-daemon --start --quiet \
	--chuid "$DAEMONUSER:$DAEMONUSER" \
	--pidfile "$PIDFILE" --exec "$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.
}

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

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
    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) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
    esac
    ;;
status)
   status_of_proc -p "$PIDFILE" "$DAEMON" "$NAME" && exit 0 || exit $?
   ;;
reload|force-reload)
    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|restart|reload|force-reload|status}" >&2
    exit 3
    ;;
esac

exit 0