|
1
|
#!/usr/local/bin/php-cgi -f
|
|
2
|
<?php
|
|
3
|
/* $Id$ */
|
|
4
|
/*
|
|
5
|
openvpn.auth-user.php
|
|
6
|
|
|
7
|
Copyright (C) 2008 Shrew Soft Inc
|
|
8
|
Copyright (C) 2010 Ermal Luçi
|
|
9
|
Copyright (C) 2013-2015 Electric Sheep Fencing, LP
|
|
10
|
All rights reserved.
|
|
11
|
|
|
12
|
Redistribution and use in source and binary forms, with or without
|
|
13
|
modification, are permitted provided that the following conditions are met:
|
|
14
|
|
|
15
|
1. Redistributions of source code must retain the above copyright notice,
|
|
16
|
this list of conditions and the following disclaimer.
|
|
17
|
|
|
18
|
2. Redistributions in binary form must reproduce the above copyright
|
|
19
|
notice, this list of conditions and the following disclaimer in the
|
|
20
|
documentation and/or other materials provided with the distribution.
|
|
21
|
|
|
22
|
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
23
|
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
24
|
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
25
|
AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
|
|
26
|
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
27
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
28
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
29
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
30
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
31
|
POSSIBILITY OF SUCH DAMAGE.
|
|
32
|
|
|
33
|
*/
|
|
34
|
/*
|
|
35
|
pfSense_BUILDER_BINARIES:
|
|
36
|
pfSense_MODULE: openvpn
|
|
37
|
*/
|
|
38
|
/*
|
|
39
|
* OpenVPN calls this script to authenticate a user
|
|
40
|
* based on a username and password. We lookup these
|
|
41
|
* in our config.xml file and check the credentials.
|
|
42
|
*/
|
|
43
|
|
|
44
|
require_once("globals.inc");
|
|
45
|
require_once("config.inc");
|
|
46
|
require_once("radius.inc");
|
|
47
|
require_once("auth.inc");
|
|
48
|
require_once("interfaces.inc");
|
|
49
|
|
|
50
|
/**
|
|
51
|
* Get the NAS-Identifier
|
|
52
|
*
|
|
53
|
* We will use our local hostname to make up the nas_id
|
|
54
|
*/
|
|
55
|
if (!function_exists("getNasID")) {
|
|
56
|
function getNasID() {
|
|
57
|
global $g;
|
|
58
|
|
|
59
|
$nasId = gethostname();
|
|
60
|
if (empty($nasId)) {
|
|
61
|
$nasId = $g['product_name'];
|
|
62
|
}
|
|
63
|
return $nasId;
|
|
64
|
}
|
|
65
|
}
|
|
66
|
|
|
67
|
/**
|
|
68
|
* Get the NAS-IP-Address based on the current wan address
|
|
69
|
*
|
|
70
|
* Use functions in interfaces.inc to find this out
|
|
71
|
*
|
|
72
|
*/
|
|
73
|
if (!function_exists("getNasIP")) {
|
|
74
|
function getNasIP() {
|
|
75
|
$nasIp = get_interface_ip();
|
|
76
|
if (!$nasIp) {
|
|
77
|
$nasIp = "0.0.0.0";
|
|
78
|
}
|
|
79
|
return $nasIp;
|
|
80
|
}
|
|
81
|
}
|
|
82
|
/* setup syslog logging */
|
|
83
|
openlog("openvpn", LOG_ODELAY, LOG_AUTH);
|
|
84
|
|
|
85
|
if (isset($_GET['username'])) {
|
|
86
|
$authmodes = explode(",", $_GET['authcfg']);
|
|
87
|
$username = base64_decode(str_replace('%3D', '=', $_GET['username']));
|
|
88
|
$password = base64_decode(str_replace('%3D', '=', $_GET['password']));
|
|
89
|
$common_name = $_GET['cn'];
|
|
90
|
$modeid = $_GET['modeid'];
|
|
91
|
$strictusercn = $_GET['strictcn'] == "false" ? false : true;
|
|
92
|
} else {
|
|
93
|
/* read data from environment */
|
|
94
|
$username = getenv("username");
|
|
95
|
$password = getenv("password");
|
|
96
|
$common_name = getenv("common_name");
|
|
97
|
}
|
|
98
|
|
|
99
|
if (!$username || !$password) {
|
|
100
|
syslog(LOG_ERR, "invalid user authentication environment");
|
|
101
|
if (isset($_GET['username'])) {
|
|
102
|
echo "FAILED";
|
|
103
|
closelog();
|
|
104
|
return;
|
|
105
|
} else {
|
|
106
|
closelog();
|
|
107
|
return (-1);
|
|
108
|
}
|
|
109
|
}
|
|
110
|
|
|
111
|
/* Replaced by a sed with proper variables used below(ldap parameters). */
|
|
112
|
//<template>
|
|
113
|
|
|
114
|
if (file_exists("{$g['varetc_path']}/openvpn/{$modeid}.ca")) {
|
|
115
|
putenv("LDAPTLS_CACERT={$g['varetc_path']}/openvpn/{$modeid}.ca");
|
|
116
|
putenv("LDAPTLS_REQCERT=never");
|
|
117
|
}
|
|
118
|
|
|
119
|
$authenticated = false;
|
|
120
|
|
|
121
|
if (($strictusercn === true) && ($common_name != $username)) {
|
|
122
|
syslog(LOG_WARNING, "Username does not match certificate common name ({$username} != {$common_name}), access denied.\n");
|
|
123
|
if (isset($_GET['username'])) {
|
|
124
|
echo "FAILED";
|
|
125
|
closelog();
|
|
126
|
return;
|
|
127
|
} else {
|
|
128
|
closelog();
|
|
129
|
return (1);
|
|
130
|
}
|
|
131
|
}
|
|
132
|
|
|
133
|
if (!is_array($authmodes)) {
|
|
134
|
syslog(LOG_WARNING, "No authentication server has been selected to authenticate against. Denying authentication for user {$username}");
|
|
135
|
if (isset($_GET['username'])) {
|
|
136
|
echo "FAILED";
|
|
137
|
closelog();
|
|
138
|
return;
|
|
139
|
} else {
|
|
140
|
closelog();
|
|
141
|
return (1);
|
|
142
|
}
|
|
143
|
}
|
|
144
|
|
|
145
|
$attributes = array();
|
|
146
|
foreach ($authmodes as $authmode) {
|
|
147
|
$authcfg = auth_get_authserver($authmode);
|
|
148
|
if (!$authcfg && $authmode != "local") {
|
|
149
|
continue;
|
|
150
|
}
|
|
151
|
|
|
152
|
$authenticated = authenticate_user($username, $password, $authcfg, $attributes);
|
|
153
|
if ($authenticated == true) {
|
|
154
|
break;
|
|
155
|
}
|
|
156
|
}
|
|
157
|
|
|
158
|
if ($authenticated == false) {
|
|
159
|
syslog(LOG_WARNING, "user '{$username}' could not authenticate.\n");
|
|
160
|
if (isset($_GET['username'])) {
|
|
161
|
echo "FAILED";
|
|
162
|
closelog();
|
|
163
|
return;
|
|
164
|
} else {
|
|
165
|
closelog();
|
|
166
|
return (-1);
|
|
167
|
}
|
|
168
|
}
|
|
169
|
|
|
170
|
if (file_exists("/etc/inc/openvpn.attributes.php")) {
|
|
171
|
include_once("/etc/inc/openvpn.attributes.php");
|
|
172
|
}
|
|
173
|
|
|
174
|
$content = "";
|
|
175
|
if (is_array($attributes['dns-servers'])) {
|
|
176
|
foreach ($attributes['dns-servers'] as $dnssrv) {
|
|
177
|
if (is_ipaddr($dnssrv)) {
|
|
178
|
$content .= "push \"dhcp-option DNS {$dnssrv}\"\n";
|
|
179
|
}
|
|
180
|
}
|
|
181
|
}
|
|
182
|
if (is_array($attributes['routes'])) {
|
|
183
|
foreach ($attributes['routes'] as $route) {
|
|
184
|
$content .= "push \"route {$route} vpn_gateway\"\n";
|
|
185
|
}
|
|
186
|
}
|
|
187
|
|
|
188
|
if (isset($attributes['framed_ip'])) {
|
|
189
|
/* XXX: only use when TAP windows driver >= 8.2.x */
|
|
190
|
/* if (isset($attributes['framed_mask'])) {
|
|
191
|
$content .= "topology subnet\n";
|
|
192
|
$content .= "ifconfig-push {$attributes['framed_ip']} {$attributes['framed_mask']}";
|
|
193
|
} else {
|
|
194
|
*/
|
|
195
|
$content .= "topology net30\n";
|
|
196
|
$content .= "ifconfig-push {$attributes['framed_ip']} ". long2ip((ip2long($attributes['framed_ip']) + 1));
|
|
197
|
// }
|
|
198
|
}
|
|
199
|
|
|
200
|
if (!empty($content)) {
|
|
201
|
@file_put_contents("{$g['tmp_path']}/{$username}", $content);
|
|
202
|
}
|
|
203
|
|
|
204
|
syslog(LOG_NOTICE, "user '{$username}' authenticated\n");
|
|
205
|
closelog();
|
|
206
|
|
|
207
|
if (isset($_GET['username'])) {
|
|
208
|
echo "OK";
|
|
209
|
} else {
|
|
210
|
return (0);
|
|
211
|
}
|
|
212
|
|
|
213
|
?>
|