#!/bin/sh
#
# Copyright © 2011 Christian Wittmer
#
# Authors: Christian Wittmer <chris@computersalat.de>
#
# /etc/init.d/ipblock
#   and its symbolic link
# /(usr/)sbin/rcipblock
#
### BEGIN INIT INFO
# Provides:          ipblock
# Required-Start:    $local_fs $remote_fs $syslog $network
# Should-Start:      rp-pppoe
# Required-Stop:     $local_fs $remote_fs $syslog $network
# Should-Stop:       rp-pppoe
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: ipblock - front-end for iplist
# Description:       Start IP blocker daemon - a front-end
#                    for iplist
### END INIT INFO

# Note on runlevels:
# 0 - halt/poweroff                     6 - reboot
# 1 - single user                       2 - multiuser without network exported
# 3 - multiuser w/ network (text mode)  5 - multiuser w/ network and X11 (xdm)
# 
# Note on script names:
# http://www.linuxbase.org/spec/refspecs/LSB_1.3.0/gLSB/gLSB/scrptnames.html
# A registry has been set up to manage the init script namespace.
# http://www.lanana.org/
# Please use the names already registered or register one or use a
# vendor prefix.


# Check for missing binaries (stale symlinks should not happen)
# Note: Special treatment of stop for LSB conformance
IPB_BIN=/usr/sbin/ipblock
test -x $IPB_BIN || { echo "$IPB_BIN not installed";
	if [ "$1" = "stop" ]; then exit 0;
	else exit 5; fi; }

# Check for existence of needed config file and read it
IPB_CONFIG=/etc/iplist/ipblock.conf
test -r $IPB_CONFIG || { echo "$IPB_CONFIG not existing";
	if [ "$1" = "stop" ]; then exit 0;
	else exit 6; fi; }

# Read config
. $IPB_CONFIG

# # check if level1.gz
# IPB_LISTFILE="${IPLIST_LISTDIR}/level1.gz"
# test -s $IPB_LISTFILE || { if [ "$1" != "update" ]; then
# 	echo "$IPB_LISTFILE not existing";
# 	echo "please run update first ($(basename $0) update)";
# 	exit 5; fi;
# 	if [ "$1" = "stop" ]; then exit 0; fi; }	

IPBLOCK="IP blocker daemon (iplist):"

# Source LSB init functions
# providing start_daemon, killproc, pidofproc, 
# log_success_msg, log_failure_msg and log_warning_msg.
# This is currently not used by UnitedLinux based distributions and
# not needed for init scripts for UnitedLinux only. If it is used,
# the functions from rc.status should not be sourced or used.
#. /lib/lsb/init-functions

# 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     be verbose in local rc status and clear it afterwards
#      rc_status -v -r  ditto and clear both the local and overall rc status
#      rc_status -s     display "skipped" and exit with status 3
#      rc_status -u     display "unused" and exit with status 3
#      rc_failed        set local and overall rc status to failed
#      rc_failed <num>  set local and overall rc status to <num>
#      rc_reset         clear both the local and overall rc status
#      rc_exit          exit appropriate to overall rc status
#      rc_active        checks whether a service is activated by symlinks
. /etc/rc.status

# Reset status of this service
rc_reset

# Return values acc. to LSB for all commands but status:
# 0       - success
# 1       - generic or unspecified error
# 2       - invalid or excess argument(s)
# 3       - unimplemented feature (e.g. "reload")
# 4       - user had insufficient privileges
# 5       - program is not installed
# 6       - program is not configured
# 7       - program is not running
# 8--199  - reserved (8--99 LSB, 100--149 distrib, 150--199 appl)
# 
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signaling is not supported) are
# considered a success.

case "$1" in
    start)
	echo -n "Starting $IPBLOCK "
	$IPB_BIN -s

	# Remember status and be verbose
	rc_status -v

	#touch /var/lock/subsys/ipblock
	;;
    stop)
	echo -n "Shutting down $IPBLOCK "
	$IPB_BIN -d

	# Remember status and be verbose
	rc_status -v
	;;
    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 3s
	$0 start

	# Remember status and be quiet
	rc_status
	;;
    reload|force-reload)
	echo -n "Reload service $IPBLOCK "
	rc_failed 3

	# Remember status and be verbose
	rc_status -v
	;;
    status)
	echo -n "Checking for service $IPBLOCK "
	$IPB_BIN -l

	# Remember status and be verbose
	rc_status -v
	;;
    update)
	echo -n "Updating lists for $IPBLOCK "
	$IPB_BIN -u

	# Remember status and be verbose
	rc_status -v
	;;
    *)
	echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload|status|update|try-restart}"
	exit 1
	;;
esac
rc_exit
