#!/bin/sh

# Init file for OpenSSH server daemon
#
# chkconfig: 2345 54 26
# description: OpenSSH server daemon
#
# processname: sshd
# config: /etc/openssh/ssh_host_key
# config: /etc/openssh/ssh_host_key.pub
# config: /etc/openssh/sshd_config
# pidfile: /var/run/sshd.pid

# Source function library.
. /etc/init.d/functions

# Source networking configuration.
# Check that networking is up.
SourceIfNotEmpty /etc/sysconfig/network &&
	[ "$NETWORKING" != no ] ||
	exit

# Get config.
SourceIfNotEmpty /etc/sysconfig/sshd

SSHD=/usr/sbin/sshd
KEYGEN=/usr/bin/ssh-keygen
RSA1_KEY=/etc/openssh/ssh_host_key
RSA_KEY=/etc/openssh/ssh_host_rsa_key
DSA_KEY=/etc/openssh/ssh_host_dsa_key
LOCKFILE=/var/lock/subsys/sshd
RETVAL=0

do_rsa1_keygen()
{
	if [ ! -s "$RSA1_KEY" ]; then
		echo -n "Generating SSH1 RSA host key: "
		if $KEYGEN -q -t rsa1 -f $RSA1_KEY -C '' -N '' >&/dev/null; then
			success "RSA1 key generation"
			echo
		else
			failure "RSA1 key generation"
			echo
			exit 1
		fi
	fi
}

do_rsa_keygen()
{
	if [ ! -s "$RSA_KEY" ]; then
		echo -n "Generating SSH2 RSA host key: "
		if $KEYGEN -q -t rsa -f $RSA_KEY -C '' -N '' >&/dev/null; then
			success "RSA key generation"
			echo
		else
			failure "RSA key generation"
			echo
			exit 1
		fi
	fi
}

do_dsa_keygen()
{
	if [ ! -s "$DSA_KEY" ]; then
		echo -n "Generating SSH2 DSA host key: "
		if $KEYGEN -q -t dsa -f $DSA_KEY -C '' -N '' >&/dev/null; then
			success "DSA key generation"
			echo
		else
			failure "DSA key generation"
			echo
			exit 1
		fi
	fi
}

do_config_sanity_check()
{
        action "Checking sshd configuration:" $SSHD -t || exit
}

start()
{
	# Create keys if necessary
	do_rsa1_keygen
	do_rsa_keygen
	do_dsa_keygen

	echo -n "Starting sshd: "
	daemon $SSHD $EXTRAOPTIONS
	RETVAL=$?
	echo
	[ $RETVAL -eq 0 ] && touch "$LOCKFILE"
	return $RETVAL
}

stop()
{
	echo -n "Shutting down sshd: "
	killproc $SSHD
	RETVAL=$?
	echo
	[ $RETVAL -eq 0 ] && rm -f "$LOCKFILE"
	return $RETVAL
}

reload()
{
	do_config_sanity_check
	echo -n "Reloading sshd: "
	killproc $SSHD -HUP
	RETVAL=$?
	echo
	return $RETVAL
}

restart()
{
	do_config_sanity_check
	stop
	start
}

# See how we were called.
case "$1" in
	start)
		start
		;;
	stop)
		stop
		;;
	reload)
		reload
		;;
	restart)
		restart
		;;
	condstop)
		if [ -e "$LOCKFILE" ]; then
			stop
		fi
		;;
	condrestart)
		if [ -e "$LOCKFILE" ]; then
			restart
		fi
		;;
	condreload)
		if [ -e "$LOCKFILE" ]; then
			reload
		fi
		;;
	check)
		do_config_sanity_check
		;;
	status)
		status $SSHD
		RETVAL=$?
		;;
	*)
		echo "Usage: ${0##*/} {start|stop|reload|restart|condstop|condrestart|condreload|check|status}"
		RETVAL=1
esac

exit $RETVAL
