[Freeswitch-users] FreeSWITCH TLS with StartSSL Certificate

4 Jun 2012

      Hello 

To day I tried to add a Free StartSSL Class 1 Certificate to a FreeSWITCH
installation. Here I will share the script on how to generate the
Certificate Request: 

#!/bin/sh

CONFDIR=/usr/local/freeswitch/conf/ssl
DAYS=2190
KEY_SIZE=2048

TMPFILE="/tmp/fs-ca-$$-$(date +%Y%m%d%H%M%S)"

COMMON_NAME="FrwwSWICH VOIP"
ALT_NAME="DNS:sip.freeswitch.org"
ORG_NAME="FreeSWICHT"
OUTFILE="agent.pem"

umask 037

generate_request() {
    local val=""

    echo "Generating new request..."

    echo
    echo "--------------------------------------------------------"
    echo "CN: \"${COMMON_NAME}\""
    echo "ORG_NAME: \"${ORG_NAME}\""
    echo "ALT_NAME: \"${ALT_NAME}\""
    echo
    echo "Certificate filename \"${OUTFILE}\""
    echo
    echo "[Is this OK? (y/N)]"
    read val
    if [ "${val}" != "y" ] && [ "${val}" != "Y" ]; then
        echo "Aborted"
        return 2
    fi

    sed \
        -e "s|%CN%|$COMMON_NAME|" \
        -e "s|%ALTNAME%|$ALT_NAME|" \
        -e "s|%ORG%|$ORG_NAME|" \
        "${CONFDIR}/CA/config.tpl" \
        > "${TMPFILE}.cfg" || exit 1

    echo ${KEY_SIZE}
        openssl req -new -out "${TMPFILE}.req" \
            -newkey rsa:${KEY_SIZE} -keyout "${TMPFILE}.key" \
            -config "${TMPFILE}.cfg" -nodes -sha1 >/dev/null || exit 1

    echo
    cat ${TMPFILE}.req
    echo
    echo "go to http://www.startssl.com/ and generate a certificate"
    echo "past certificate:"
    while read LINE
        do
        echo $LINE >> ${TMPFILE}.crt
        if [ "$LINE" = "^A" ];then
            break
        fi
    done
    echo "other processing continues "

# openssl x509 -req -CAkey "${CONFDIR}/CA/cakey.pem" -CA
"${CONFDIR}/CA/cacert.pem" -CAcreateserial \
# -in "${TMPFILE}.req" -out "${TMPFILE}.crt" -extfile "${TMPFILE}.cfg" \
# -extensions "${EXTENSIONS}" -days ${DAYS} -sha1 >/dev/null || exit 1
    cat "${TMPFILE}.crt" "${TMPFILE}.key" > "${CONFDIR}/${OUTFILE}"

    wget http://www.startssl.com/certs/sub.class1.server.ca.pem
    wget http://www.startssl.com/certs/ca.pem
    cat sub.class1.server.ca.pem ca.pem >> ${CONFDIR}/cafile.pem
    rm -f sub.class1.server.ca.pem ca.pem
    rm "${TMPFILE}.cfg" "${TMPFILE}.crt" "${TMPFILE}.key" "${TMPFILE}.req"

    echo "DONE"
}

remove_startssl() {
	echo "Removing StartSSL"

	if [ -d "${CONFDIR}/agent.pem" ]; then
		rm "${CONFDIR}/agent.pem"
	fi

	echo "DONE"
}
OUTFILESET="0"
command="$1"
shift

while [ $# -gt 0 ]; do
	case $1 in
		-cn)
			shift
			COMMON_NAME="$1"
			;;
		-alt)
			shift
			ALT_NAME="$1"
			;;
		-org)
			shift
			ORG_NAME="$1"
			;;
		-out)
			shift
			OUTFILE="$1"
			OUTFILESET="1"
			;;
		-days)
			shift
			DAYS="$1"
			;;
	esac
	shift
done

case ${command} in
    create_request)
        EXTENSIONS="request"
        generate_request
        ;;

	remove)
		echo "Are you sure you want to delete the StartSSL Certificate? [YES to
delete]"
		read val
		if [ "${val}" = "YES" ]; then
			remove_startssl
		else
			echo "Not deleting CA"
		fi
		;;

	*)
		cat <<-EOF
		$0 <create_request|remove> [options]

		  * commands:

		    remove - Remove StartSSL

            create_request - Create a new certificate request for startSSL

		  * options:

		   -cn       Set common name
		   -alt      Set alternative name (use prefix 'DNS:' or 'URI:')
		   -org      Set organization name
		   -out      Filename for new certificate (create only)
		   -days     Certificate expires in X days (default: 365)

		EOF
		exit 1
		;;
esac

Everything seams to work, expect the validation of a SNOM phone. Does any
one know how to tell FreeSWITCH to publish the correct ca bundel and
certificate track. Because the CA Certificate of Start SSL is included in
the SNOM:

regards

Patrick 

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[Freeswitch-users] FreeSWITCH TLS with StartSSL Certificate

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