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#!/usr/local/bin/php-cgi -f
<?php
/*
* ipsec.auth-user.php
*
* part of pfSense (https://www.pfsense.org)
* Copyright (c) 2008 Shrew Soft Inc
* Copyright (c) 2008-2018 Rubicon Communications, LLC (Netgate)
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* ipsec calls this script to authenticate a user
* based on a username and password. We lookup these
* in our config.xml file and check the credentials.
*/
require_once("globals.inc");
require_once("config.inc");
require_once("auth.inc");
require_once("interfaces.inc");
/* setup syslog logging */
openlog("charon", LOG_ODELAY, LOG_AUTH);
if (isset($_GET['username'])) {
$authmodes = explode(",", $_GET['authcfg']);
$username = $_GET['username'];
$password = $_GET['password'];
$common_name = $_GET['cn'];
} else {
/* read data from environment */
$username = getenv("username");
$password = getenv("password");
$common_name = getenv("common_name");
$authmodes = explode(",", getenv("authcfg"));
}
if (!$username || !$password) {
syslog(LOG_ERR, "invalid user authentication environment");
if (isset($_GET['username'])) {
echo "FAILED";
closelog();
return;
} else {
closelog();
exit (-1);
}
}
$authenticated = false;
if (($strictusercn === true) && ($common_name != $username)) {
syslog(LOG_WARNING, "Username does not match certificate common name ({$username} != {$common_name}), access denied.\n");
if (isset($_GET['username'])) {
echo "FAILED";
closelog();
return;
} else {
closelog();
exit (1);
}
}
$attributes = array("nas_identifier" => "xauthIPsec");
foreach ($authmodes as $authmode) {
$authcfg = auth_get_authserver($authmode);
if (!$authcfg && $authmode != "Local Database") {
continue;
}
$authenticated = authenticate_user($username, $password, $authcfg, $attributes);
if ($authenticated == true) {
if ($authmode == "Local Database") {
$user = getUserEntry($username);
if (!is_array($user) || !userHasPrivilege($user, "user-ipsec-xauth-dialin")) {
$authenticated = false;
syslog(LOG_WARNING, "user '{$username}' cannot authenticate through IPsec since the required privileges are missing.\n");
continue;
}
}
break;
}
}
if ($authenticated == false) {
syslog(LOG_WARNING, "user '{$username}' could not authenticate.\n");
if (isset($_GET['username'])) {
echo "FAILED";
closelog();
return;
} else {
closelog();
exit (-1);
}
}
if (file_exists("/etc/inc/ipsec.attributes.php")) {
include_once("/etc/inc/ipsec.attributes.php");
}
syslog(LOG_NOTICE, "user '{$username}' authenticated\n");
closelog();
if (isset($_GET['username'])) {
echo "OK";
} else {
exit (0);
}
?>
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