# $Id$
# exchanges the public server and client ssh keys

gen_keys()
{
	if [ ! -e /etc/dropbear/dropbear_dss_host_key ]
	then
		echo -e ${COLOREDSTAR}"Generating DSS-Hostkey ..."
		/usr/bin/dropbearkey -t dss -f /etc/dropbear/dropbear_dss_host_key
	fi

	if [ ! -e /etc/dropbear/dropbear_rsa_host_key ]
	then
		echo -e ${COLOREDSTAR}"Generating RSA-Hostkey ..."
		/usr/bin/dropbearkey -t rsa -f /etc/dropbear/dropbear_rsa_host_key
	fi

	if [ ! -e /etc/dropbear/dropbear_rsa_host_key.pub ]
	then
		echo -e ${COLOREDSTAR}"Generating Public RSA-Hostkey ..."
		# note: the key is stored in the second line of the output
		/usr/bin/dropbearkey -y -f /etc/dropbear/dropbear_rsa_host_key | sed -n '2p' \
			> /etc/dropbear/dropbear_rsa_host_key.pub
	fi
}

config_ssh_auth()
{
	local PUB_KEY_SERVER
	local ID

	# generate evtually missing keys
	gen_keys

	# write the public key of the server to the host system
	PUB_KEY_SERVER="$(mysqldo "select public_key from ssh_auth_server where id=1;")"

	if [[ -n ${PUB_KEY_SERVER} ]]
	then
		HOME=/root
		# only if not empty
		[ ! -d $HOME/.ssh ] && install -d $HOME/.ssh
		echo "${PUB_KEY_SERVER}" > $HOME/.ssh/authorized_keys
	fi

	# put the public key of the host into the db
	ID=$(mysqldo "select serial from ssh_auth_clients where serial=${ALX_SERIAL};")

	if [[ -n ${ID} ]]
	then
		# run an update
		mysqldo "update ssh_auth_clients set public_key='$(< /etc/dropbear/dropbear_rsa_host_key.pub)' where serial=${ALX_SERIAL};"
	else
		# run an insert
		mysqldo "insert into ssh_auth_clients(serial,public_key) values('${ALX_SERIAL}','$(< /etc/dropbear/dropbear_rsa_host_key.pub)')"
	fi
}