|
1
|
<?php
|
|
2
|
/*
|
|
3
|
captiveportal.inc
|
|
4
|
part of m0n0wall (http://m0n0.ch/wall)
|
|
5
|
|
|
6
|
Copyright (C) 2003-2005 Manuel Kasper <mk@neon1.net>.
|
|
7
|
All rights reserved.
|
|
8
|
|
|
9
|
Redistribution and use in source and binary forms, with or without
|
|
10
|
modification, are permitted provided that the following conditions are met:
|
|
11
|
|
|
12
|
1. Redistributions of source code must retain the above copyright notice,
|
|
13
|
this list of conditions and the following disclaimer.
|
|
14
|
|
|
15
|
2. Redistributions in binary form must reproduce the above copyright
|
|
16
|
notice, this list of conditions and the following disclaimer in the
|
|
17
|
documentation and/or other materials provided with the distribution.
|
|
18
|
|
|
19
|
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
20
|
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
21
|
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
22
|
AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
|
|
23
|
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
24
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
25
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
26
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
27
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
28
|
POSSIBILITY OF SUCH DAMAGE.
|
|
29
|
|
|
30
|
This version of captiveportal.inc has been modified by Rob Parker
|
|
31
|
<rob.parker@keycom.co.uk> to include changes for per-user bandwidth management
|
|
32
|
via returned RADIUS attributes. This page has been modified to delete any
|
|
33
|
added rules which may have been created by other per-user code (index.php, etc).
|
|
34
|
These changes are (c) 2004 Keycom PLC.
|
|
35
|
*/
|
|
36
|
|
|
37
|
/* include all configuration functions */
|
|
38
|
require_once("functions.inc");
|
|
39
|
require_once("radius_authentication.inc");
|
|
40
|
require_once("radius_accounting.inc") ;
|
|
41
|
|
|
42
|
function captiveportal_configure() {
|
|
43
|
global $config, $g;
|
|
44
|
|
|
45
|
if (isset($config['captiveportal']['enable']) &&
|
|
46
|
(($config['captiveportal']['interface'] == "lan") ||
|
|
47
|
isset($config['interfaces'][$config['captiveportal']['interface']]['enable']))) {
|
|
48
|
|
|
49
|
if ($g['booting'])
|
|
50
|
echo "Starting captive portal... ";
|
|
51
|
|
|
52
|
/* kill any running mini_httpd */
|
|
53
|
killbypid("{$g['varrun_path']}/mini_httpd.cp.pid");
|
|
54
|
killbypid("{$g['varrun_path']}/mini_httpd.cps.pid");
|
|
55
|
|
|
56
|
/* kill any running minicron */
|
|
57
|
killbypid("{$g['varrun_path']}/minicron.pid");
|
|
58
|
|
|
59
|
/* generate ipfw rules */
|
|
60
|
$cprules = captiveportal_rules_generate();
|
|
61
|
|
|
62
|
/* make sure ipfw is loaded */
|
|
63
|
mwexec("/sbin/kldload ipfw");
|
|
64
|
|
|
65
|
/* stop accounting on all clients */
|
|
66
|
captiveportal_radius_stop_all();
|
|
67
|
|
|
68
|
/* remove old information */
|
|
69
|
unlink_if_exists("{$g['vardb_path']}/captiveportal.nextrule");
|
|
70
|
unlink_if_exists("{$g['vardb_path']}/captiveportal.db");
|
|
71
|
unlink_if_exists("{$g['vardb_path']}/captiveportal_mac.db");
|
|
72
|
unlink_if_exists("{$g['vardb_path']}/captiveportal_ip.db");
|
|
73
|
unlink_if_exists("{$g['vardb_path']}/captiveportal_radius.db");
|
|
74
|
|
|
75
|
/* write portal page */
|
|
76
|
if ($config['captiveportal']['page']['htmltext'])
|
|
77
|
$htmltext = base64_decode($config['captiveportal']['page']['htmltext']);
|
|
78
|
else {
|
|
79
|
/* example/template page */
|
|
80
|
$htmltext = <<<EOD
|
|
81
|
<html>
|
|
82
|
<head>
|
|
83
|
<title>pfSense captive portal</title>
|
|
84
|
</head>
|
|
85
|
<body>
|
|
86
|
<h2>pfSense captive portal</h2>
|
|
87
|
Welcome to the pfSense Captive Portal! This is the default page since a custom page has not been defined.
|
|
88
|
<form method="post" action="$PORTAL_ACTION$">
|
|
89
|
<table>
|
|
90
|
<tr><td>Username:</td><td><input name="auth_user" type="text"></td></tr>
|
|
91
|
<tr><td>Password:</td><td><input name="auth_pass" type="password"></td></tr>
|
|
92
|
<tr><td colspan="2">
|
|
93
|
<form method="post" action="\$PORTAL_ACTION\$">
|
|
94
|
<input name="accept" type="submit" value="Continue">
|
|
95
|
<input name="redirurl" type="hidden" value="\$PORTAL_REDIRURL\$">
|
|
96
|
</td></tr>
|
|
97
|
</table>
|
|
98
|
</form>
|
|
99
|
</body>
|
|
100
|
</html>
|
|
101
|
|
|
102
|
EOD;
|
|
103
|
}
|
|
104
|
|
|
105
|
$fd = @fopen("{$g['varetc_path']}/captiveportal.html", "w");
|
|
106
|
if ($fd) {
|
|
107
|
fwrite($fd, $htmltext);
|
|
108
|
fclose($fd);
|
|
109
|
}
|
|
110
|
|
|
111
|
/* write error page */
|
|
112
|
if ($config['captiveportal']['page']['errtext'])
|
|
113
|
$errtext = base64_decode($config['captiveportal']['page']['errtext']);
|
|
114
|
else {
|
|
115
|
/* example page */
|
|
116
|
$errtext = <<<EOD
|
|
117
|
<html>
|
|
118
|
<head>
|
|
119
|
<title>Authentication error</title>
|
|
120
|
</head>
|
|
121
|
<body>
|
|
122
|
<font color="#cc0000"><h2>Authentication error</h2></font>
|
|
123
|
<b>
|
|
124
|
Username and/or password invalid.
|
|
125
|
<br><br>
|
|
126
|
<a href="javascript:history.back()">Go back</a>
|
|
127
|
</b>
|
|
128
|
</body>
|
|
129
|
</html>
|
|
130
|
|
|
131
|
EOD;
|
|
132
|
}
|
|
133
|
|
|
134
|
$fd = @fopen("{$g['varetc_path']}/captiveportal-error.html", "w");
|
|
135
|
if ($fd) {
|
|
136
|
fwrite($fd, $errtext);
|
|
137
|
fclose($fd);
|
|
138
|
}
|
|
139
|
|
|
140
|
/* load rules */
|
|
141
|
mwexec("/sbin/ipfw -f delete set 1");
|
|
142
|
mwexec("/sbin/ipfw -f delete set 2");
|
|
143
|
mwexec("/sbin/ipfw -f delete set 3");
|
|
144
|
|
|
145
|
/* XXX - seems like ipfw cannot accept rules directly on stdin,
|
|
146
|
so we have to write them to a temporary file first */
|
|
147
|
$fd = @fopen("{$g['tmp_path']}/ipfw.cp.rules", "w");
|
|
148
|
if (!$fd) {
|
|
149
|
printf("Cannot open ipfw.cp.rules in captiveportal_configure()\n");
|
|
150
|
return 1;
|
|
151
|
}
|
|
152
|
|
|
153
|
fwrite($fd, $cprules);
|
|
154
|
fclose($fd);
|
|
155
|
|
|
156
|
mwexec("/sbin/ipfw {$g['tmp_path']}/ipfw.cp.rules");
|
|
157
|
|
|
158
|
unlink("{$g['tmp_path']}/ipfw.cp.rules");
|
|
159
|
|
|
160
|
/* filter on layer2 as well so we can check MAC addresses */
|
|
161
|
mwexec("/sbin/sysctl net.link.ether.ipfw=1");
|
|
162
|
|
|
163
|
chdir($g['captiveportal_path']);
|
|
164
|
|
|
165
|
$memory = get_memory();
|
|
166
|
$avail = $memory[0];
|
|
167
|
if($avail > 0 and $avail < 60) {
|
|
168
|
$procs = 16;
|
|
169
|
} else if($avail > 60 and $avail < 120) {
|
|
170
|
$procs = 24;
|
|
171
|
} else if($avail > 120 and $avail < 160) {
|
|
172
|
$procs = 32;
|
|
173
|
} else if($avail > 160 and $avail < 250) {
|
|
174
|
$procs = 48;
|
|
175
|
} else if($avail > 250 and $avail < 380) {
|
|
176
|
$procs = 56;
|
|
177
|
} else if($avail > 380 and $avail < 500) {
|
|
178
|
$procs = 72;
|
|
179
|
} else if($avail > 500 and $avail < 680) {
|
|
180
|
$procs = 80;
|
|
181
|
} else {
|
|
182
|
$procs = 16;
|
|
183
|
}
|
|
184
|
|
|
185
|
/* start web server */
|
|
186
|
mwexec("/usr/local/sbin/mini_httpd -a -M 0 -u root -maxproc {$procs}" .
|
|
187
|
" -p 8000 -i {$g['varrun_path']}/mini_httpd.cp.pid");
|
|
188
|
|
|
189
|
/* fire up another one for HTTPS if requested */
|
|
190
|
if (isset($config['captiveportal']['httpslogin']) &&
|
|
191
|
$config['captiveportal']['certificate'] && $config['captiveportal']['private-key']) {
|
|
192
|
|
|
193
|
$cert = base64_decode($config['captiveportal']['certificate']);
|
|
194
|
$key = base64_decode($config['captiveportal']['private-key']);
|
|
195
|
|
|
196
|
$fd = fopen("{$g['varetc_path']}/cert-portal.pem", "w");
|
|
197
|
if (!$fd) {
|
|
198
|
printf("Error: cannot open cert-portal.pem in system_webgui_start().\n");
|
|
199
|
return 1;
|
|
200
|
}
|
|
201
|
chmod("{$g['varetc_path']}/cert-portal.pem", 0600);
|
|
202
|
fwrite($fd, $cert);
|
|
203
|
fwrite($fd, "\n");
|
|
204
|
fwrite($fd, $key);
|
|
205
|
fclose($fd);
|
|
206
|
|
|
207
|
mwexec("/usr/local/sbin/mini_httpd -S -a -M 0 -E {$g['varetc_path']}/cert-portal.pem" .
|
|
208
|
" -u root -maxproc 16 -p 8001" .
|
|
209
|
" -i {$g['varrun_path']}/mini_httpd.cps.pid");
|
|
210
|
}
|
|
211
|
|
|
212
|
/* start pruning process (interval = 60 seconds) */
|
|
213
|
mwexec("/usr/local/bin/minicron 60 {$g['varrun_path']}/minicron.pid " .
|
|
214
|
"/etc/rc.prunecaptiveportal");
|
|
215
|
|
|
216
|
/* generate passthru mac database */
|
|
217
|
captiveportal_passthrumac_configure();
|
|
218
|
/* create allowed ip database and insert ipfw rules to make it so */
|
|
219
|
captiveportal_allowedip_configure();
|
|
220
|
|
|
221
|
/* generate radius server database */
|
|
222
|
if ($config['captiveportal']['radiusip'] && (!isset($config['captiveportal']['auth_method']) ||
|
|
223
|
($config['captiveportal']['auth_method'] == "radius"))) {
|
|
224
|
$radiusip = $config['captiveportal']['radiusip'];
|
|
225
|
|
|
226
|
if ($config['captiveportal']['radiusport'])
|
|
227
|
$radiusport = $config['captiveportal']['radiusport'];
|
|
228
|
else
|
|
229
|
$radiusport = 1812;
|
|
230
|
|
|
231
|
if ($config['captiveportal']['radiusacctport'])
|
|
232
|
$radiusacctport = $config['captiveportal']['radiusacctport'];
|
|
233
|
else
|
|
234
|
$radiusacctport = 1813;
|
|
235
|
|
|
236
|
$radiuskey = $config['captiveportal']['radiuskey'];
|
|
237
|
|
|
238
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_radius.db", "w");
|
|
239
|
if (!$fd) {
|
|
240
|
printf("Error: cannot open radius DB file in captiveportal_configure().\n");
|
|
241
|
return 1;
|
|
242
|
} else {
|
|
243
|
fwrite($fd,$radiusip . "," . $radiusport . "," . $radiusacctport . "," . $radiuskey);
|
|
244
|
}
|
|
245
|
fclose($fd);
|
|
246
|
}
|
|
247
|
|
|
248
|
if ($g['booting'])
|
|
249
|
echo "done\n";
|
|
250
|
|
|
251
|
} else {
|
|
252
|
killbypid("{$g['varrun_path']}/mini_httpd.cp.pid");
|
|
253
|
killbypid("{$g['varrun_path']}/mini_httpd.cps.pid");
|
|
254
|
killbypid("{$g['varrun_path']}/minicron.pid");
|
|
255
|
|
|
256
|
captiveportal_radius_stop_all();
|
|
257
|
|
|
258
|
mwexec("/sbin/sysctl net.link.ether.ipfw=0");
|
|
259
|
|
|
260
|
if (!isset($config['shaper']['enable'])) {
|
|
261
|
/* unload ipfw */
|
|
262
|
mwexec("/sbin/kldunload ipfw");
|
|
263
|
} else {
|
|
264
|
/* shaper is on - just remove our rules */
|
|
265
|
mwexec("/sbin/ipfw -f delete set 1");
|
|
266
|
mwexec("/sbin/ipfw -f delete set 2");
|
|
267
|
mwexec("/sbin/ipfw -f delete set 3");
|
|
268
|
}
|
|
269
|
}
|
|
270
|
|
|
271
|
return 0;
|
|
272
|
}
|
|
273
|
|
|
274
|
function captiveportal_rules_generate() {
|
|
275
|
global $config, $g;
|
|
276
|
|
|
277
|
$cpifn = $config['captiveportal']['interface'];
|
|
278
|
$cpif = $config['interfaces'][$cpifn]['if'];
|
|
279
|
$cpip = $config['interfaces'][$cpifn]['ipaddr'];
|
|
280
|
|
|
281
|
/* note: the captive portal daemon inserts all pass rules for authenticated
|
|
282
|
clients as skipto 50000 rules to make traffic shaping work */
|
|
283
|
|
|
284
|
$cprules = "";
|
|
285
|
|
|
286
|
/* allow nat redirects to work see
|
|
287
|
http://cvstrac.pfsense.com/tktview?tn=651
|
|
288
|
*/
|
|
289
|
$iflist = array("lan" => "LAN", "wan" => "WAN");
|
|
290
|
$captive_portal_interface = strtoupper($config['captiveportal']['interface']);
|
|
291
|
for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++)
|
|
292
|
$iflist['opt' . $i] = $config['interfaces']['opt' . $i]['descr'];
|
|
293
|
foreach ($iflist as $ifent => $ifname) {
|
|
294
|
//echo "{$ifname} -> {$config['captiveportal']['interface']}\n";
|
|
295
|
if($captive_portal_interface == strtoupper($ifname))
|
|
296
|
continue;
|
|
297
|
$int = convert_friendly_interface_to_real_interface_name($ifname);
|
|
298
|
$cprules .= "add 30 set 1 skipto 50000 all from any to any in via {$int} keep-state\n";
|
|
299
|
}
|
|
300
|
|
|
301
|
/* captive portal on LAN interface? */
|
|
302
|
if ($cpifn == "lan") {
|
|
303
|
/* add anti-lockout rules */
|
|
304
|
$cprules .= <<<EOD
|
|
305
|
add 500 pass all from $cpip to any out via $cpif
|
|
306
|
add 501 set 1 pass all from any to $cpip in via $cpif
|
|
307
|
|
|
308
|
EOD;
|
|
309
|
}
|
|
310
|
|
|
311
|
$cprules .= <<<EOD
|
|
312
|
# skip to traffic shaper if not on captive portal interface
|
|
313
|
add 1000 set 1 skipto 50000 all from any to any not layer2 not via $cpif
|
|
314
|
# pass all layer2 traffic on other interfaces
|
|
315
|
add 1001 set 1 pass layer2 not via $cpif
|
|
316
|
|
|
317
|
# layer 2: pass ARP
|
|
318
|
add 1100 set 1 pass layer2 mac-type arp
|
|
319
|
# layer 2: block anything else non-IP
|
|
320
|
add 1101 set 1 deny layer2 not mac-type ip
|
|
321
|
# layer 2: check if MAC addresses of authenticated clients are correct
|
|
322
|
add 1102 set 1 skipto 20000 layer2
|
|
323
|
|
|
324
|
# allow access to our DHCP server (which needs to be able to ping clients as well)
|
|
325
|
add 1200 set 1 pass udp from any 68 to 255.255.255.255 67 in
|
|
326
|
add 1201 set 1 pass udp from any 68 to $cpip 67 in
|
|
327
|
add 1202 set 1 pass udp from $cpip 67 to any 68 out
|
|
328
|
add 1203 set 1 pass icmp from $cpip to any out icmptype 8
|
|
329
|
add 1204 set 1 pass icmp from any to $cpip in icmptype 0
|
|
330
|
|
|
331
|
# allow access to our DNS forwarder
|
|
332
|
add 1300 set 1 pass udp from any to $cpip 53 in
|
|
333
|
add 1301 set 1 pass udp from $cpip 53 to any out
|
|
334
|
|
|
335
|
# allow access to our web server
|
|
336
|
add 1302 set 1 pass tcp from any to $cpip 8000 in
|
|
337
|
add 1303 set 1 pass tcp from $cpip 8000 to any out
|
|
338
|
|
|
339
|
EOD;
|
|
340
|
|
|
341
|
if (isset($config['captiveportal']['httpslogin'])) {
|
|
342
|
$cprules .= <<<EOD
|
|
343
|
add 1304 set 1 pass tcp from any to $cpip 8001 in
|
|
344
|
add 1305 set 1 pass tcp from $cpip 8001 to any out
|
|
345
|
|
|
346
|
EOD;
|
|
347
|
}
|
|
348
|
|
|
349
|
$cprules .= <<<EOD
|
|
350
|
|
|
351
|
# ... 10000-19899: rules per authenticated client go here...
|
|
352
|
|
|
353
|
# redirect non-authenticated clients to captive portal
|
|
354
|
add 19900 set 1 fwd 127.0.0.1,8000 tcp from any to any 80 in
|
|
355
|
# let the responses from the captive portal web server back out
|
|
356
|
add 19901 set 1 pass tcp from any 80 to any out
|
|
357
|
# block everything else
|
|
358
|
add 19902 set 1 deny all from any to any
|
|
359
|
|
|
360
|
# ... 20000-29899: layer2 block rules per authenticated client go here...
|
|
361
|
|
|
362
|
# pass everything else on layer2
|
|
363
|
add 29900 set 1 pass all from any to any layer2
|
|
364
|
|
|
365
|
EOD;
|
|
366
|
|
|
367
|
return $cprules;
|
|
368
|
}
|
|
369
|
|
|
370
|
/* remove clients that have been around for longer than the specified amount of time */
|
|
371
|
/* db file structure: timestamp,ipfw_rule_no,clientip,clientmac,username,sessionid,password */
|
|
372
|
/* (password is in Base64 and only saved when reauthentication is enabled) */
|
|
373
|
function captiveportal_prune_old() {
|
|
374
|
|
|
375
|
global $g, $config;
|
|
376
|
|
|
377
|
/* check for expired entries */
|
|
378
|
if ($config['captiveportal']['timeout'])
|
|
379
|
$timeout = $config['captiveportal']['timeout'] * 60;
|
|
380
|
else
|
|
381
|
$timeout = 0;
|
|
382
|
|
|
383
|
if ($config['captiveportal']['idletimeout'])
|
|
384
|
$idletimeout = $config['captiveportal']['idletimeout'] * 60;
|
|
385
|
else
|
|
386
|
$idletimeout = 0;
|
|
387
|
|
|
388
|
if (!$timeout && !$idletimeout && !isset($config['captiveportal']['reauthenticate']))
|
|
389
|
return;
|
|
390
|
|
|
391
|
captiveportal_lock();
|
|
392
|
|
|
393
|
/* read database */
|
|
394
|
$cpdb = captiveportal_read_db();
|
|
395
|
|
|
396
|
$radiusservers = captiveportal_get_radius_servers();
|
|
397
|
|
|
398
|
for ($i = 0; $i < count($cpdb); $i++) {
|
|
399
|
|
|
400
|
$timedout = false;
|
|
401
|
|
|
402
|
/* hard timeout? */
|
|
403
|
if ($timeout) {
|
|
404
|
if ((time() - $cpdb[$i][0]) >= $timeout)
|
|
405
|
$timedout = true;
|
|
406
|
}
|
|
407
|
|
|
408
|
/* if an idle timeout is specified, get last activity timestamp from ipfw */
|
|
409
|
if (!$timedout && $idletimeout) {
|
|
410
|
$lastact = captiveportal_get_last_activity($cpdb[$i][1]);
|
|
411
|
if ($lastact && ((time() - $lastact) >= $idletimeout))
|
|
412
|
$timedout = true;
|
|
413
|
}
|
|
414
|
|
|
415
|
if ($timedout) {
|
|
416
|
captiveportal_disconnect($cpdb[$i], $radiusservers);
|
|
417
|
captiveportal_logportalauth($cpdb[$i][4], $cpdb[$i][3], $cpdb[$i][2], "TIMEOUT");
|
|
418
|
unset($cpdb[$i]);
|
|
419
|
}
|
|
420
|
|
|
421
|
/* do periodic RADIUS reauthentication? */
|
|
422
|
if (!$timedout && isset($config['captiveportal']['reauthenticate']) &&
|
|
423
|
($radiusservers !== false)) {
|
|
424
|
|
|
425
|
if (isset($config['captiveportal']['radacct_enable'])) {
|
|
426
|
if ($config['captiveportal']['reauthenticateacct'] == "stopstart") {
|
|
427
|
/* stop and restart accounting */
|
|
428
|
RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno
|
|
429
|
$cpdb[$i][4], // username
|
|
430
|
$cpdb[$i][5], // sessionid
|
|
431
|
$cpdb[$i][0], // start time
|
|
432
|
$radiusservers[0]['ipaddr'],
|
|
433
|
$radiusservers[0]['acctport'],
|
|
434
|
$radiusservers[0]['key'],
|
|
435
|
$cpdb[$i][2]); //clientip
|
|
436
|
exec("/sbin/ipfw zero {$cpdb[$i][1]}");
|
|
437
|
RADIUS_ACCOUNTING_START($cpdb[$i][4],
|
|
438
|
$cpdb[$i][5],
|
|
439
|
$radiusservers[0]['ipaddr'],
|
|
440
|
$radiusservers[0]['acctport'],
|
|
441
|
$radiusservers[0]['key'],
|
|
442
|
$cpdb[$i][2]);
|
|
443
|
} else if ($config['captiveportal']['reauthenticateacct'] == "interimupdate") {
|
|
444
|
RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno
|
|
445
|
$cpdb[$i][4], // username
|
|
446
|
$cpdb[$i][5], // sessionid
|
|
447
|
$cpdb[$i][0], // start time
|
|
448
|
$radiusservers[0]['ipaddr'],
|
|
449
|
$radiusservers[0]['acctport'],
|
|
450
|
$radiusservers[0]['key'],
|
|
451
|
$cpdb[$i][2], //clientip
|
|
452
|
true);
|
|
453
|
}
|
|
454
|
}
|
|
455
|
|
|
456
|
/* check this user against RADIUS again */
|
|
457
|
$auth_val = RADIUS_AUTHENTICATION($cpdb[$i][4],
|
|
458
|
base64_decode($cpdb[$i][6]),
|
|
459
|
$radiusservers[0]['ipaddr'],
|
|
460
|
$radiusservers[0]['port'],
|
|
461
|
$radiusservers[0]['key']);
|
|
462
|
|
|
463
|
if ($auth_val == 3) {
|
|
464
|
captiveportal_disconnect($cpdb[$i], $radiusservers);
|
|
465
|
captiveportal_logportalauth($cpdb[$i][4], $cpdb[$i][3], $cpdb[$i][2], "RADIUS_DISCONNECT");
|
|
466
|
unset($cpdb[$i]);
|
|
467
|
}
|
|
468
|
}
|
|
469
|
}
|
|
470
|
|
|
471
|
/* write database */
|
|
472
|
captiveportal_write_db($cpdb);
|
|
473
|
|
|
474
|
captiveportal_unlock();
|
|
475
|
}
|
|
476
|
|
|
477
|
/* remove a single client according to the DB entry */
|
|
478
|
function captiveportal_disconnect($dbent, $radiusservers) {
|
|
479
|
|
|
480
|
global $g, $config;
|
|
481
|
|
|
482
|
/* this client needs to be deleted - remove ipfw rules */
|
|
483
|
if (isset($config['captiveportal']['radacct_enable']) && isset($radiusservers[0])) {
|
|
484
|
RADIUS_ACCOUNTING_STOP($dbent[1], // ruleno
|
|
485
|
$dbent[4], // username
|
|
486
|
$dbent[5], // sessionid
|
|
487
|
$dbent[0], // start time
|
|
488
|
$radiusservers[0]['ipaddr'],
|
|
489
|
$radiusservers[0]['acctport'],
|
|
490
|
$radiusservers[0]['key'],
|
|
491
|
$dbent[2]); //clientip
|
|
492
|
}
|
|
493
|
|
|
494
|
mwexec("/sbin/ipfw delete " . $dbent[1] . " " . ($dbent[1]+10000));
|
|
495
|
|
|
496
|
//KEYCOM: we need to delete +40500 and +45500 as well...
|
|
497
|
//these are the rule numbers we use to control traffic shaping for each logged in user via captive portal
|
|
498
|
//we only need to remove our rules if peruserbw is turned on.
|
|
499
|
if (isset($config['captiveportal']['peruserbw'])) {
|
|
500
|
mwexec("/sbin/ipfw delete " . ($dbent[1]+40500));
|
|
501
|
mwexec("/sbin/ipfw delete " . ($dbent[1]+45500));
|
|
502
|
}
|
|
503
|
}
|
|
504
|
|
|
505
|
/* remove a single client by ipfw rule number */
|
|
506
|
function captiveportal_disconnect_client($id) {
|
|
507
|
|
|
508
|
global $g, $config;
|
|
509
|
|
|
510
|
captiveportal_lock();
|
|
511
|
|
|
512
|
/* read database */
|
|
513
|
$cpdb = captiveportal_read_db();
|
|
514
|
$radiusservers = captiveportal_get_radius_servers();
|
|
515
|
|
|
516
|
/* find entry */
|
|
517
|
for ($i = 0; $i < count($cpdb); $i++) {
|
|
518
|
if ($cpdb[$i][1] == $id) {
|
|
519
|
captiveportal_disconnect($cpdb[$i], $radiusservers);
|
|
520
|
captiveportal_logportalauth($cpdb[$i][4], $cpdb[$i][3], $cpdb[$i][2], "DISCONNECT");
|
|
521
|
unset($cpdb[$i]);
|
|
522
|
break;
|
|
523
|
}
|
|
524
|
}
|
|
525
|
|
|
526
|
/* write database */
|
|
527
|
captiveportal_write_db($cpdb);
|
|
528
|
|
|
529
|
captiveportal_unlock();
|
|
530
|
}
|
|
531
|
|
|
532
|
/* send RADIUS acct stop for all current clients */
|
|
533
|
function captiveportal_radius_stop_all() {
|
|
534
|
global $g, $config;
|
|
535
|
|
|
536
|
captiveportal_lock();
|
|
537
|
$cpdb = captiveportal_read_db();
|
|
538
|
|
|
539
|
$radiusservers = captiveportal_get_radius_servers();
|
|
540
|
|
|
541
|
if (isset($radiusservers[0])) {
|
|
542
|
for ($i = 0; $i < count($cpdb); $i++) {
|
|
543
|
RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno
|
|
544
|
$cpdb[$i][4], // username
|
|
545
|
$cpdb[$i][5], // sessionid
|
|
546
|
$cpdb[$i][0], // start time
|
|
547
|
$radiusservers[0]['ipaddr'],
|
|
548
|
$radiusservers[0]['acctport'],
|
|
549
|
$radiusservers[0]['key'],
|
|
550
|
$cpdb[$i][2]); //clientip
|
|
551
|
}
|
|
552
|
}
|
|
553
|
captiveportal_unlock();
|
|
554
|
}
|
|
555
|
|
|
556
|
function captiveportal_passthrumac_configure() {
|
|
557
|
global $config, $g;
|
|
558
|
|
|
559
|
captiveportal_lock();
|
|
560
|
|
|
561
|
/* clear out passthru macs, if necessary */
|
|
562
|
unlink_if_exists("{$g['vardb_path']}/captiveportal_mac.db");
|
|
563
|
|
|
564
|
if (is_array($config['captiveportal']['passthrumac'])) {
|
|
565
|
|
|
566
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_mac.db", "w");
|
|
567
|
if (!$fd) {
|
|
568
|
printf("Error: cannot open passthru mac DB file in captiveportal_passthrumac_configure().\n");
|
|
569
|
captiveportal_unlock();
|
|
570
|
return 1;
|
|
571
|
}
|
|
572
|
|
|
573
|
foreach ($config['captiveportal']['passthrumac'] as $macent) {
|
|
574
|
/* record passthru mac so it can be recognized and let thru */
|
|
575
|
fwrite($fd, $macent['mac'] . "\n");
|
|
576
|
}
|
|
577
|
|
|
578
|
fclose($fd);
|
|
579
|
}
|
|
580
|
|
|
581
|
/* pass through mac entries should always exist. the reason
|
|
582
|
* for this is because we do not have native mac address filtering
|
|
583
|
* mechanisms. this allows us to filter by mac address easily
|
|
584
|
* and get around this limitation. I consider this a bug in
|
|
585
|
* m0n0wall and pfSense as m0n0wall does not have native mac
|
|
586
|
* filtering mechanisms as well. -Scott Ullrich
|
|
587
|
*/
|
|
588
|
if (is_array($config['captiveportal']['passthrumac'])) {
|
|
589
|
mwexec("/sbin/ipfw delete 50");
|
|
590
|
foreach($config['captiveportal']['passthrumac'] as $ptm) {
|
|
591
|
/* create the pass through mac entry */
|
|
592
|
//system("echo /sbin/ipfw add 50 skipto 65535 ip from any to any MAC {$ptm['mac']} any > /tmp/cp");
|
|
593
|
mwexec("/sbin/ipfw add 50 skipto 29900 ip from any to any MAC {$ptm['mac']} any keep-state");
|
|
594
|
mwexec("/sbin/ipfw add 50 skipto 29900 ip from any to any MAC any {$ptm['mac']} keep-state");
|
|
595
|
}
|
|
596
|
}
|
|
597
|
|
|
598
|
captiveportal_unlock();
|
|
599
|
|
|
600
|
return 0;
|
|
601
|
}
|
|
602
|
|
|
603
|
function captiveportal_allowedip_configure() {
|
|
604
|
global $config, $g;
|
|
605
|
|
|
606
|
captiveportal_lock();
|
|
607
|
|
|
608
|
/* clear out existing allowed ips, if necessary */
|
|
609
|
if (file_exists("{$g['vardb_path']}/captiveportal_ip.db")) {
|
|
610
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_ip.db", "r");
|
|
611
|
if ($fd) {
|
|
612
|
while (!feof($fd)) {
|
|
613
|
$line = trim(fgets($fd));
|
|
614
|
if ($line) {
|
|
615
|
list($ip,$rule) = explode(",",$line);
|
|
616
|
mwexec("/sbin/ipfw delete $rule");
|
|
617
|
}
|
|
618
|
}
|
|
619
|
}
|
|
620
|
fclose($fd);
|
|
621
|
unlink("{$g['vardb_path']}/captiveportal_ip.db");
|
|
622
|
}
|
|
623
|
|
|
624
|
/* get next ipfw rule number */
|
|
625
|
if (file_exists("{$g['vardb_path']}/captiveportal.nextrule"))
|
|
626
|
$ruleno = trim(file_get_contents("{$g['vardb_path']}/captiveportal.nextrule"));
|
|
627
|
if (!$ruleno)
|
|
628
|
$ruleno = 10000; /* first rule number */
|
|
629
|
|
|
630
|
if (is_array($config['captiveportal']['allowedip'])) {
|
|
631
|
|
|
632
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_ip.db", "w");
|
|
633
|
if (!$fd) {
|
|
634
|
printf("Error: cannot open allowed ip DB file in captiveportal_allowedip_configure().\n");
|
|
635
|
captiveportal_unlock();
|
|
636
|
return 1;
|
|
637
|
}
|
|
638
|
|
|
639
|
foreach ($config['captiveportal']['allowedip'] as $ipent) {
|
|
640
|
|
|
641
|
/* record allowed ip so it can be recognized and removed later */
|
|
642
|
fwrite($fd, $ipent['ip'] . "," . $ruleno ."\n");
|
|
643
|
|
|
644
|
/* insert ipfw rule to allow ip thru */
|
|
645
|
if ($ipent['dir'] == "from") {
|
|
646
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from " . $ipent['ip'] . " to any in");
|
|
647
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from any to " . $ipent['ip'] . " out");
|
|
648
|
} else {
|
|
649
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from any to " . $ipent['ip'] . " in");
|
|
650
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from " . $ipent['ip'] . " to any out");
|
|
651
|
}
|
|
652
|
|
|
653
|
$ruleno++;
|
|
654
|
if ($ruleno > 19899)
|
|
655
|
$ruleno = 10000;
|
|
656
|
}
|
|
657
|
|
|
658
|
fclose($fd);
|
|
659
|
|
|
660
|
/* write next rule number */
|
|
661
|
$fd = @fopen("{$g['vardb_path']}/captiveportal.nextrule", "w");
|
|
662
|
if ($fd) {
|
|
663
|
fwrite($fd, $ruleno);
|
|
664
|
fclose($fd);
|
|
665
|
}
|
|
666
|
}
|
|
667
|
|
|
668
|
captiveportal_unlock();
|
|
669
|
return 0;
|
|
670
|
}
|
|
671
|
|
|
672
|
/* get last activity timestamp given ipfw rule number */
|
|
673
|
function captiveportal_get_last_activity($ruleno) {
|
|
674
|
|
|
675
|
exec("/sbin/ipfw -T list {$ruleno} 2>/dev/null", $ipfwoutput);
|
|
676
|
|
|
677
|
/* in */
|
|
678
|
if ($ipfwoutput[0]) {
|
|
679
|
$ri = explode(" ", $ipfwoutput[0]);
|
|
680
|
if ($ri[1])
|
|
681
|
return $ri[1];
|
|
682
|
}
|
|
683
|
|
|
684
|
return 0;
|
|
685
|
}
|
|
686
|
|
|
687
|
/* read captive portal DB into array */
|
|
688
|
function captiveportal_read_db() {
|
|
689
|
|
|
690
|
global $g;
|
|
691
|
|
|
692
|
$cpdb = array();
|
|
693
|
$fd = @fopen("{$g['vardb_path']}/captiveportal.db", "r");
|
|
694
|
if ($fd) {
|
|
695
|
while (!feof($fd)) {
|
|
696
|
$line = trim(fgets($fd));
|
|
697
|
if ($line) {
|
|
698
|
$cpdb[] = explode(",", $line);
|
|
699
|
}
|
|
700
|
}
|
|
701
|
fclose($fd);
|
|
702
|
}
|
|
703
|
return $cpdb;
|
|
704
|
}
|
|
705
|
|
|
706
|
/* write captive portal DB */
|
|
707
|
function captiveportal_write_db($cpdb) {
|
|
708
|
|
|
709
|
global $g;
|
|
710
|
|
|
711
|
$fd = @fopen("{$g['vardb_path']}/captiveportal.db", "w");
|
|
712
|
if ($fd) {
|
|
713
|
foreach ($cpdb as $cpent) {
|
|
714
|
fwrite($fd, join(",", $cpent) . "\n");
|
|
715
|
}
|
|
716
|
fclose($fd);
|
|
717
|
}
|
|
718
|
}
|
|
719
|
|
|
720
|
/* read RADIUS servers into array */
|
|
721
|
function captiveportal_get_radius_servers() {
|
|
722
|
|
|
723
|
global $g;
|
|
724
|
|
|
725
|
if (file_exists("{$g['vardb_path']}/captiveportal_radius.db")) {
|
|
726
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_radius.db","r");
|
|
727
|
if ($fd) {
|
|
728
|
$radiusservers = array();
|
|
729
|
while (!feof($fd)) {
|
|
730
|
$line = trim(fgets($fd));
|
|
731
|
if ($line) {
|
|
732
|
$radsrv = array();
|
|
733
|
list($radsrv['ipaddr'],$radsrv['port'],$radsrv['acctport'],$radsrv['key']) = explode(",",$line);
|
|
734
|
$radiusservers[] = $radsrv;
|
|
735
|
}
|
|
736
|
}
|
|
737
|
fclose($fd);
|
|
738
|
|
|
739
|
return $radiusservers;
|
|
740
|
}
|
|
741
|
}
|
|
742
|
|
|
743
|
return false;
|
|
744
|
}
|
|
745
|
|
|
746
|
/* lock captive portal information, decide that the lock file is stale after
|
|
747
|
10 seconds */
|
|
748
|
function captiveportal_lock() {
|
|
749
|
|
|
750
|
global $g;
|
|
751
|
|
|
752
|
$lockfile = "{$g['varrun_path']}/captiveportal.lock";
|
|
753
|
|
|
754
|
$n = 0;
|
|
755
|
while ($n < 10) {
|
|
756
|
/* open the lock file in append mode to avoid race condition */
|
|
757
|
if ($fd = @fopen($lockfile, "x")) {
|
|
758
|
/* succeeded */
|
|
759
|
fclose($fd);
|
|
760
|
return;
|
|
761
|
} else {
|
|
762
|
/* file locked, wait and try again */
|
|
763
|
sleep(1);
|
|
764
|
$n++;
|
|
765
|
}
|
|
766
|
}
|
|
767
|
}
|
|
768
|
|
|
769
|
/* unlock configuration file */
|
|
770
|
function captiveportal_unlock() {
|
|
771
|
|
|
772
|
global $g;
|
|
773
|
|
|
774
|
$lockfile = "{$g['varrun_path']}/captiveportal.lock";
|
|
775
|
|
|
776
|
if (file_exists($lockfile))
|
|
777
|
unlink($lockfile);
|
|
778
|
}
|
|
779
|
|
|
780
|
/* log successful captive portal authentication to syslog */
|
|
781
|
/* part of this code from php.net */
|
|
782
|
function captiveportal_logportalauth($user,$mac,$ip,$status) {
|
|
783
|
define_syslog_variables();
|
|
784
|
openlog("logportalauth", LOG_PID, LOG_LOCAL4);
|
|
785
|
// Log it
|
|
786
|
syslog(LOG_INFO, "$status: $user, $mac, $ip");
|
|
787
|
closelog();
|
|
788
|
}
|
|
789
|
|
|
790
|
?>
|