pfSense

#!/usr/local/bin/php-cgi -f

/*

 *

 * part of pfSense (https://www.pfsense.org)

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 *    this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgment:

 *    "This product includes software developed by the pfSense Project

 *    for use in the pfSense® software distribution. (http://www.pfsense.org/).

 *

 * 4. The names "pfSense" and "pfSense Project" must not be used to

 *    endorse or promote products derived from this software without

 *    prior written permission. For written permission, please contact

 *    coreteam@pfsense.org.

 *

 * 5. Products derived from this software may not be called "pfSense"

 *    nor may "pfSense" appear in their names without prior written

 *    permission of the Electric Sheep Fencing, LLC.

 *

 * 6. Redistributions of any form whatsoever must retain the following

 *    acknowledgment:

 *

 * "This product includes software developed by the pfSense Project

 * for use in the pfSense software distribution (http://www.pfsense.org/).

 *

 * THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY

 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE pfSense PROJECT OR

 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

 * OF THE POSSIBILITY OF SUCH DAMAGE.

 */

 * OpenVPN calls this script to validate a certificate

 *  This script is called ONCE per DEPTH of the certificate chain

 *  Normal operation would have two runs - one for the server certificate

 *  and one for the client certificate. Beyond that, you're dealing with

 *  intermediates.

 */

require_once("globals.inc");

require_once("config.inc");

require_once("interfaces.inc");

openlog("openvpn", LOG_ODELAY, LOG_AUTH);

/* read data from command line */

	$cert_subject = urldecode($_GET['certsubject']);

	$allowed_depth = $_GET['depth'];

	$server_cn = $_GET['servercn'];

} else {

	$cert_depth = intval($argv[1]);

	$cert_subject = $argv[2];

}

/* Reserved for future use in case we decide to verify CNs and such as well

$subj = explode("/", $cert_subject);

foreach ($subj at $s) {

	list($n, $v) = explode("=", $s);

*/

/* Replaced by sed with proper variables used below ( $server_cn and $allowed_depth ). */

//<template>

if (isset($allowed_depth) && ($cert_depth > $allowed_depth)) {

	syslog(LOG_WARNING, "Certificate depth {$cert_depth} exceeded max allowed depth of {$allowed_depth}.\n");

		closelog();

		return;

	} else {

		closelog();

		exit(1);

	}

// Debug

?>