#!/bin/sh
#-
# Copyright (c) 2012 iXsystems, Inc.
# All rights reserved.
#
# Written by: Xin Li <delphij@FreeBSD.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD: head/security/sshguard/files/sshguard.in 414462 2016-05-02 16:49:08Z feld $
#

# PROVIDE: sshguard
# REQUIRE: LOGIN cleanvar
# KEYWORD: shutdown

#
# Add the following lines to /etc/rc.conf to enable sshguard:
# sshguard_enable (bool):	Set to "NO" by default.
#				Set it to "YES" to enable sshguard
# sshguard_pidfile (str):	Path to PID file.
#				Set to "/var/run/sshguard.pid" by default
# sshguard_watch_logs (str):	Colon splitted list of logs to watch.
#				Set to "/var/log/auth.log:/var/log/maillog"
#				by default.
# The following options directly maps to their command line options,
# please read manual page sshguard(8) for detailed information:
# sshguard_blacklist (str):	[thr:]/path/to/blacklist.
#				Set to "30:/var/db/sshguard/blacklist.db"
#				by default.
# sshguard_danger_thresh (int):	Danger threshold.  Set to "30" by default.
# sshguard_release_interval (int):
#				Minimum interval an address remains
#				blocked.  Set to "120" by default.
# sshguard_reset_interval (int):
#				Interval before a suspected attack is
#				forgotten and danger is reset to 0.
#				Set to "1800" by default.
# sshguard_whitelistfile (str):	Path to the whitelist.
#				Set to "%%PREFIX%%/etc/sshguard.whitelist"
#				by default.
# sshguard_flags (str):		Set additional command line arguments.
#


. /etc/rc.subr

name=sshguard
rcvar=sshguard_enable

load_rc_config sshguard

: ${sshguard_enable:=NO}
: ${sshguard_blacklist=30:/var/db/sshguard/blacklist.db}
: ${sshguard_danger_thresh=30}
: ${sshguard_release_interval=120}
: ${sshguard_reset_interval=1800}
: ${sshguard_whitelistfile="%%PREFIX%%/etc/sshguard.whitelist"}
: ${sshguard_watch_logs=/var/log/auth.log:/var/log/maillog}

pidfile=${sshguard_pidfile:="/var/run/sshguard.pid"}

command=/usr/sbin/daemon
actual_command="%%PREFIX%%/sbin/sshguard"
procname="${actual_command}"
start_precmd=sshguard_prestart
command_args="-c ${actual_command} \${sshguard_flags} \${sshguard_blacklist_params} \${sshguard_watch_params} -a ${sshguard_danger_thresh} -p ${sshguard_release_interval} -s ${sshguard_reset_interval} -w ${sshguard_whitelistfile} -i ${pidfile}"

sshguard_prestart()
{
	# Clear rc_flags so sshguard_flags can be passed to sshguard
	# instaed of daemon(8)
	rc_flags=""

	if [ ! -z ${sshguard_blacklist} ]; then
	    mkdir -p $(dirname ${sshguard_blacklist##*:})
	    sshguard_blacklist_params="-b ${sshguard_blacklist}"
	fi

	[ -e ${sshguard_whitelistfile} ] || touch ${sshguard_whitelistfile}

	sshguard_watch_params=$(echo ${sshguard_watch_logs} | tr : \\\n | sed -e s/^/-l\ /g | tr \\\n \ )
}

run_rc_command "$1"