#!/bin/bash

# Create the host keys for the OpenSSH server.
#

# 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

do_rsa1_keygen() {
	if [ ! -s $RSA1_KEY ]; then
		rm -f $RSA1_KEY
		if test ! -f $RSA1_KEY && $KEYGEN -q -t rsa1 -f $RSA1_KEY -C '' -N '' >&/dev/null; then
			chgrp ssh_keys $RSA1_KEY
			chmod 600 $RSA1_KEY
			chmod 644 $RSA1_KEY.pub
			if [ -x /sbin/restorecon ]; then
			    /sbin/restorecon $RSA1_KEY.pub
			fi
		else
			exit 1
		fi
	fi
}

do_rsa_keygen() {
	if [ ! -s $RSA_KEY ]; then
		rm -f $RSA_KEY
		if test ! -f $RSA_KEY && $KEYGEN -q -t rsa -f $RSA_KEY -C '' -N '' >&/dev/null; then
			chgrp ssh_keys $RSA_KEY
			chmod 600 $RSA_KEY
			chmod 644 $RSA_KEY.pub
			if [ -x /sbin/restorecon ]; then
			    /sbin/restorecon $RSA_KEY.pub
			fi
		else
			exit 1
		fi
	fi
}

do_dsa_keygen() {
	if [ ! -s $DSA_KEY ]; then
		rm -f $DSA_KEY
		if test ! -f $DSA_KEY && $KEYGEN -q -t dsa -f $DSA_KEY -C '' -N '' >&/dev/null; then
			chgrp ssh_keys $DSA_KEY
			chmod 600 $DSA_KEY
			chmod 644 $DSA_KEY.pub
			if [ -x /sbin/restorecon ]; then
			    /sbin/restorecon $DSA_KEY.pub
			fi
		else
			exit 1
		fi
	fi
}

# Create keys
do_rsa_keygen
do_rsa1_keygen
do_dsa_keygen