#!/bin/bash

# Init file for OpenSSH server daemon
#
# chkconfig: 2345 55 25
# description: OpenSSH server daemon
#
# processname: sshd
# config: /etc/ssh/ssh_host_key
# config: /etc/ssh/ssh_host_key.pub
# config: /etc/ssh/ssh_random_seed
# config: /etc/ssh/sshd_config
# pidfile: /var/run/sshd.pid

# source function library
. /etc/rc.d/init.d/functions

RETVAL=0

# Some functions to make the below more readable
KEYGEN=/usr/bin/ssh-keygen
RSA1_KEY=/etc/ssh/ssh_host_key
RSA_KEY=/etc/ssh/ssh_host_rsa_key
DSA_KEY=/etc/ssh/ssh_host_dsa_key
PID_FILE=/var/run/sshd.pid
do_rsa1_keygen() {
	if ! test -f $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 ! test -f $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 ! test -f $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
}

case "$1" in
	start)
		# Create keys if necessary
		do_rsa1_keygen;
		do_rsa_keygen;
		do_dsa_keygen;
		
		echo -n "Starting sshd: "
		if [ ! -f $PID_FILE ] ; then
			sshd
			RETVAL=$?
			if [ "$RETVAL" = "0" ] ; then
				success "sshd startup"
				touch /var/lock/subsys/sshd
			else
				failure "sshd startup"
			fi
		fi
		echo
		;;
	stop)
		echo -n "Shutting down sshd: "
		if [ -f $PID_FILE ] ; then
			killproc sshd
			RETVAL=$?
			[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/sshd
		fi
		echo
		;;
	restart)
		$0 stop
		$0 start
		RETVAL=$?
		;;
	condrestart)
		if [ -f /var/lock/subsys/sshd ] ; then
			$0 stop
			$0 start
			RETVAL=$?
		fi
		;;
	status)
		status sshd
		RETVAL=$?
		;;
	*)
		echo "Usage: sshd {start|stop|restart|status|condrestart}"
		exit 1
		;;
esac

exit $RETVAL