#!/bin/sh
#
# /etc/rc.d/sshd -- run control script for sshd
#
# Copyright (c) 2019 David Demelier <markand@malikania.fr>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#

if [ -f /etc/rc.conf ]; then
	. /etc/rc.conf
fi

: ${SSHD_CMD:=/bin/sshd}
: ${SSHD_ARGS:=}
: ${SSHD_PID:=/var/run/sshd.pid}

sshd_start()
{
	if [ ! -f /etc/ssh/ssh_host_rsa_key ]; then
		/bin/ssh-keygen -q -t rsa -b 2048 -N "" -f /etc/ssh/ssh_host_rsa_key
	fi
	if [ ! -f /etc/ssh/ssh_host_dsa_key ]; then
		/bin/ssh-keygen -q -t dsa -N "" -f /etc/ssh/ssh_host_dsa_key
	fi
	if [ ! -f /etc/ssh/ssh_host_ecdsa_key ]; then
		/bin/ssh-keygen -q -t ecdsa -b 521 -N "" -f /etc/ssh/ssh_host_ecdsa_key
	fi
	if [ ! -f /etc/ssh/ssh_host_ed25519_key ]; then
		/bin/ssh-keygen -q -t ed25519 -N "" -f /etc/ssh/ssh_host_ed25519_key
	fi

	echo "Starting sshd: $SSHD_CMD $SSHD_ARGS"
	$SSHD_CMD $SSHD_ARGS -p $SSHD_PID
}

sshd_status()
{
	if [ -s $SSHD_PID ]; then
		echo "sshd is running with pid: `cat $SSHD_PID`"
	else
		echo "sshd is not running"
	fi
}

sshd_stop()
{
	if [ -s $SSHD_PID ]; then
		echo "Stopping sshd."
		kill -QUIT $SSHD_PID
	fi
}

sshd_restart()
{
	sshd_stop
	sleep 3
	sshd_start
}

case $1 in
start)
	sshd_start
	;;
status)
	sshd_status
	;;
stop)
	sshd_stop
	;;
restart)
	sshd_restart
	;;
*)
	echo "usage: $(basename $0) restart|start|status|stop"
	;;
esac