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#!/usr/local/bin/php-cgi -f
<?php
/*
* openvpn.tls-verify.php
*
* part of pfSense (https://www.pfsense.org)
* Copyright (c) 2011-2016 Electric Sheep Fencing, LLC
* All rights reserved.
*
* 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 */
if (isset($_GET['certdepth'])) {
$cert_depth = $_GET['certdepth'];
$cert_subject = urldecode($_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("=", $s);
if ($n == "CN") {
$common_name = $v;
}
}
*/
/* 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 {$allowed_depth}.\n");
if (isset($_GET['certdepth'])) {
echo "FAILED";
closelog();
return;
} else {
closelog();
exit(1);
}
}
// Debug
//syslog(LOG_WARNING, "Found certificate {$argv[2]} with depth {$cert_depth}\n");
closelog();
if (isset($_GET['certdepth'])) {
echo "OK";
} else {
exit(0);
}
?>
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