summaryrefslogtreecommitdiffstats
path: root/etc/inc/openvpn.auth-user.php
blob: 9ed16472bf0bdfaa63f723fa588df4bc9979bdf9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
#!/usr/local/bin/php -f
<?php
/* $Id$ */
/*
    openvpn.auth-user.php

    Copyright (C) 2008 Shrew Soft Inc
    Copyright (C) 2010 Ermal Luçi
    Copyright (C) 2013-2014 Electric Sheep Fencing, LP
    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.

    THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS 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
    AUTHOR 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.

*/
/*
	pfSense_BUILDER_BINARIES:	
	pfSense_MODULE:	openvpn
*/
/*
 * OpenVPN 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("radius.inc");
require_once("auth.inc");
require_once("interfaces.inc");

/**
 * Get the NAS-Identifier
 *
 * We will use our local hostname to make up the nas_id
 */
if (!function_exists("getNasID")) {
function getNasID()
{
    global $g;

    $nasId = gethostname();
    if(empty($nasId))
        $nasId = $g['product_name'];
    return $nasId;
}
}

/**
 * Get the NAS-IP-Address based on the current wan address
 *
 * Use functions in interfaces.inc to find this out
 *
 */
if (!function_exists("getNasIP")) {
function getNasIP()
{
    $nasIp = get_interface_ip();
    if(!$nasIp)
        $nasIp = "0.0.0.0";
    return $nasIp;
}
}
/* setup syslog logging */
openlog("openvpn", LOG_ODELAY, LOG_AUTH);

if (isset($_GET)) {
	$authmodes = explode(",", $_GET['authcfg']);
	$username = $_GET['username'];
	$password = urldecode($_GET['password']);
	$common_name = $_GET['cn'];
	$modeid = $_GET['modeid'];
	$strictusercn = $_GET['strictcn'] == "false" ? false : true;
} else {
	/* read data from environment */
	$username = getenv("username");
	$password = getenv("password");
	$common_name = getenv("common_name");
}

if (!$username || !$password) {
	syslog(LOG_ERR, "invalid user authentication environment");
	if (isset($_GET)) {
		echo "FAILED";
		closelog();
		return;
	} else {
		closelog();
		return (-1);
	}
}

/* Replaced by a sed with propper variables used below(ldap parameters). */
//<template>

if (file_exists("{$g['varetc_path']}/openvpn/{$modeid}.ca")) {
	putenv("LDAPTLS_CACERT={$g['varetc_path']}/openvpn/{$modeid}.ca");
	putenv("LDAPTLS_REQCERT=never");
}

$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)) {
		echo "FAILED";
		closelog();
		return;
	} else {
		closelog();
		return (1);
	}
}

if (!is_array($authmodes)) {
	syslog(LOG_WARNING, "No authentication server has been selected to authenticate against. Denying authentication for user {$username}");
	if (isset($_GET)) {
		echo "FAILED";
		closelog();
		return;
	} else {
		closelog();
		return (1);
	}
}

$attributes = array();
foreach ($authmodes as $authmode) {
	$authcfg = auth_get_authserver($authmode);
	if (!$authcfg && $authmode != "local")
		continue;

	$authenticated = authenticate_user($username, $password, $authcfg, $attributes);
	if ($authenticated == true)
		break;
}

if ($authenticated == false) {
	syslog(LOG_WARNING, "user '{$username}' could not authenticate.\n");
	if (isset($_GET)) {
		echo "FAILED";
		closelog();
		return;
	} else {
		closelog();
		return (-1);
	}
}

if (file_exists("/etc/inc/openvpn.attributes.php"))
        include_once("/etc/inc/openvpn.attributes.php");
        
$content = "";
if (is_array($attributes['dns-servers'])) {
        foreach ($attributes['dns-servers'] as $dnssrv) {
                if (is_ipaddr($dnssrv))
                        $content .= "push \"dhcp-option DNS {$dnssrv}\"\n";
        }
}
if (is_array($attributes['routes'])) {
        foreach ($attributes['routes'] as $route)
		$content .= "push \"route {$route} vpn_gateway\"\n";
}

if (isset($attributes['framed_ip'])) {
/* XXX: only use when TAP windows driver >= 8.2.x */
/*      if (isset($attributes['framed_mask'])) {
                $content .= "topology subnet\n";
                $content .= "ifconfig-push {$attributes['framed_ip']} {$attributes['framed_mask']}";
        } else {
*/
                $content .= "topology net30\n";
                $content .= "ifconfig-push {$attributes['framed_ip']} ". long2ip((ip2long($attributes['framed_ip']) + 1));
//      }
}
    
if (!empty($content))
        @file_put_contents("{$g['tmp_path']}/{$username}", $content);

syslog(LOG_NOTICE, "user '{$username}' authenticated\n");
closelog();

if (isset($_GET))
	echo "OK";
else
	return (0);

?>
OpenPOWER on IntegriCloud