|
1
|
<?php
|
|
2
|
/*
|
|
3
|
captiveportal.inc
|
|
4
|
part of m0n0wall (http://m0n0.ch/wall)
|
|
5
|
|
|
6
|
Copyright (C) 2003-2004 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
|
|
|
31
|
/* include all configuration functions */
|
|
32
|
require_once("functions.inc");
|
|
33
|
require_once("radius_accounting.inc") ;
|
|
34
|
|
|
35
|
function captiveportal_configure() {
|
|
36
|
global $config, $g;
|
|
37
|
|
|
38
|
if (isset($config['captiveportal']['enable']) &&
|
|
39
|
(($config['captiveportal']['interface'] == "lan") ||
|
|
40
|
isset($config['interfaces'][$config['captiveportal']['interface']]['enable']))) {
|
|
41
|
|
|
42
|
if ($g['booting'])
|
|
43
|
echo "Starting captive portal... ";
|
|
44
|
|
|
45
|
/* kill any running mini_httpd */
|
|
46
|
killbypid("{$g['varrun_path']}/mini_httpd.cp.pid");
|
|
47
|
killbypid("{$g['varrun_path']}/mini_httpd.cps.pid");
|
|
48
|
|
|
49
|
/* kill any running minicron */
|
|
50
|
killbypid("{$g['varrun_path']}/minicron.pid");
|
|
51
|
|
|
52
|
/* generate ipfw rules */
|
|
53
|
$cprules = captiveportal_rules_generate();
|
|
54
|
|
|
55
|
/* make sure ipfw is loaded */
|
|
56
|
mwexec("/sbin/kldload ipfw");
|
|
57
|
|
|
58
|
/* stop accounting on all clients */
|
|
59
|
captiveportal_radius_stop_all() ;
|
|
60
|
|
|
61
|
/* remove old information */
|
|
62
|
unlink_if_exists("{$g['vardb_path']}/captiveportal.nextrule");
|
|
63
|
unlink_if_exists("{$g['vardb_path']}/captiveportal.db");
|
|
64
|
unlink_if_exists("{$g['vardb_path']}/captiveportal_mac.db");
|
|
65
|
unlink_if_exists("{$g['vardb_path']}/captiveportal_ip.db");
|
|
66
|
unlink_if_exists("{$g['vardb_path']}/captiveportal_radius.db");
|
|
67
|
|
|
68
|
/* write portal page */
|
|
69
|
if ($config['captiveportal']['page']['htmltext'])
|
|
70
|
$htmltext = base64_decode($config['captiveportal']['page']['htmltext']);
|
|
71
|
else {
|
|
72
|
/* example/template page */
|
|
73
|
$htmltext = <<<EOD
|
|
74
|
<html>
|
|
75
|
<title>pfSense's captive portal</title>
|
|
76
|
<head>
|
|
77
|
<STYLE type="text/css">
|
|
78
|
.listhdrr {
|
|
79
|
background-color: #BBBBBB;
|
|
80
|
padding-right: 16px;
|
|
81
|
padding-left: 6px;
|
|
82
|
font-weight: bold;
|
|
83
|
border-right: 1px solid #999999;
|
|
84
|
border-bottom: 1px solid #999999;
|
|
85
|
font-size: 11px;
|
|
86
|
padding-top: 5px;
|
|
87
|
padding-bottom: 5px;
|
|
88
|
}
|
|
89
|
|
|
90
|
</STYLE>
|
|
91
|
</head>
|
|
92
|
<body bgcolor="#990000">
|
|
93
|
<center>
|
|
94
|
<font color="white" face="arial" size="+1">Welcome to pfSense's captive portal!</font>
|
|
95
|
<p>
|
|
96
|
<form method="post" action="$PORTAL_ACTION$">
|
|
97
|
<table border="0" cellpadding="6" cellspacing="0">
|
|
98
|
<tr><td align="right" class="listhdrr"><font color="white">Username:</td><td class="listhdrr"><input name="auth_user" type="text"></td></tr>
|
|
99
|
<tr><td align="right" class="listhdrr"><font color="white">Password:</td><td class="listhdrr"><input name="auth_pass" type="password"></td></tr>
|
|
100
|
<input name="redirurl" type="hidden" value="$PORTAL_REDIRURL$">
|
|
101
|
</table>
|
|
102
|
<p>
|
|
103
|
<center><input name="accept" type="submit" value="Continue">
|
|
104
|
</form>
|
|
105
|
</center>
|
|
106
|
</body>
|
|
107
|
</html>
|
|
108
|
|
|
109
|
EOD;
|
|
110
|
}
|
|
111
|
|
|
112
|
$fd = @fopen("{$g['varetc_path']}/captiveportal.html", "w");
|
|
113
|
if ($fd) {
|
|
114
|
fwrite($fd, $htmltext);
|
|
115
|
fclose($fd);
|
|
116
|
}
|
|
117
|
|
|
118
|
/* write error page */
|
|
119
|
if ($config['captiveportal']['page']['errtext'])
|
|
120
|
$errtext = base64_decode($config['captiveportal']['page']['errtext']);
|
|
121
|
else {
|
|
122
|
/* example page */
|
|
123
|
$errtext = <<<EOD
|
|
124
|
<html>
|
|
125
|
<head>
|
|
126
|
<title>Authentication error</title>
|
|
127
|
</head>
|
|
128
|
<body>
|
|
129
|
<font color="#cc0000"><h2>Authentication error</h2></font>
|
|
130
|
<b>
|
|
131
|
Username and/or password invalid.
|
|
132
|
<br><br>
|
|
133
|
<a href="javascript:history.back()">Go back</a>
|
|
134
|
</b>
|
|
135
|
</body>
|
|
136
|
</html>
|
|
137
|
|
|
138
|
EOD;
|
|
139
|
}
|
|
140
|
|
|
141
|
$fd = @fopen("{$g['varetc_path']}/captiveportal-error.html", "w");
|
|
142
|
if ($fd) {
|
|
143
|
fwrite($fd, $errtext);
|
|
144
|
fclose($fd);
|
|
145
|
}
|
|
146
|
|
|
147
|
/* load rules */
|
|
148
|
mwexec("/sbin/ipfw -f delete set 1");
|
|
149
|
mwexec("/sbin/ipfw -f delete set 2");
|
|
150
|
mwexec("/sbin/ipfw -f delete set 3");
|
|
151
|
|
|
152
|
/* XXX - seems like ipfw cannot accept rules directly on stdin,
|
|
153
|
so we have to write them to a temporary file first */
|
|
154
|
$fd = @fopen("{$g['tmp_path']}/ipfw.cp.rules", "w");
|
|
155
|
if (!$fd) {
|
|
156
|
printf("Cannot open ipfw.cp.rules in captiveportal_configure()\n");
|
|
157
|
return 1;
|
|
158
|
}
|
|
159
|
|
|
160
|
fwrite($fd, $cprules);
|
|
161
|
fclose($fd);
|
|
162
|
|
|
163
|
mwexec("/sbin/ipfw {$g['tmp_path']}/ipfw.cp.rules");
|
|
164
|
|
|
165
|
unlink("{$g['tmp_path']}/ipfw.cp.rules");
|
|
166
|
|
|
167
|
/* filter on layer2 as well so we can check MAC addresses */
|
|
168
|
mwexec("/sbin/sysctl net.link.ether.ipfw=1");
|
|
169
|
|
|
170
|
chdir($g['captiveportal_path']);
|
|
171
|
|
|
172
|
/* start web server */
|
|
173
|
mwexec("/usr/local/sbin/mini_httpd -a -M 0 -u root -maxproc 16" .
|
|
174
|
" -p 8000 -i {$g['varrun_path']}/mini_httpd.cp.pid");
|
|
175
|
|
|
176
|
/* fire up another one for HTTPS if requested */
|
|
177
|
if (isset($config['captiveportal']['httpslogin']) &&
|
|
178
|
$config['captiveportal']['certificate'] && $config['captiveportal']['private-key']) {
|
|
179
|
|
|
180
|
$cert = base64_decode($config['captiveportal']['certificate']);
|
|
181
|
$key = base64_decode($config['captiveportal']['private-key']);
|
|
182
|
|
|
183
|
$fd = fopen("{$g['varetc_path']}/cert-portal.pem", "w");
|
|
184
|
if (!$fd) {
|
|
185
|
printf("Error: cannot open cert-portal.pem in system_webgui_start().\n");
|
|
186
|
return 1;
|
|
187
|
}
|
|
188
|
chmod("{$g['varetc_path']}/cert-portal.pem", 0600);
|
|
189
|
fwrite($fd, $cert);
|
|
190
|
fwrite($fd, "\n");
|
|
191
|
fwrite($fd, $key);
|
|
192
|
fclose($fd);
|
|
193
|
|
|
194
|
mwexec("/usr/local/sbin/mini_httpd -S -a -M 0 -E {$g['varetc_path']}/cert-portal.pem" .
|
|
195
|
" -u root -maxproc 16 -p 8001" .
|
|
196
|
" -i {$g['varrun_path']}/mini_httpd.cps.pid");
|
|
197
|
}
|
|
198
|
|
|
199
|
/* start pruning process (interval = 60 seconds) */
|
|
200
|
mwexec("/usr/local/bin/minicron 60 {$g['varrun_path']}/minicron.pid " .
|
|
201
|
"/etc/rc.prunecaptiveportal");
|
|
202
|
|
|
203
|
/* generate passthru mac database */
|
|
204
|
captiveportal_passthrumac_configure() ;
|
|
205
|
/* create allowed ip database and insert ipfw rules to make it so */
|
|
206
|
captiveportal_allowedip_configure() ;
|
|
207
|
|
|
208
|
/* generate radius server database */
|
|
209
|
if($config['captiveportal']['radiusip']) {
|
|
210
|
$radiusip = $config['captiveportal']['radiusip'] ;
|
|
211
|
|
|
212
|
if($config['captiveportal']['radiusport'])
|
|
213
|
$radiusport = $config['captiveportal']['radiusport'] ;
|
|
214
|
else
|
|
215
|
$radiusport = 1812;
|
|
216
|
|
|
217
|
if($config['captiveportal']['radiusacctport'])
|
|
218
|
$radiusacctport = $config['captiveportal']['radiusacctport'] ;
|
|
219
|
else
|
|
220
|
$radiusacctport = 1813;
|
|
221
|
|
|
222
|
$radiuskey = $config['captiveportal']['radiuskey'];
|
|
223
|
|
|
224
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_radius.db", "w");
|
|
225
|
if (!$fd) {
|
|
226
|
printf("Error: cannot open radius DB file in captiveportal_configure().\n");
|
|
227
|
return 1;
|
|
228
|
} else {
|
|
229
|
fwrite($fd,$radiusip . "," . $radiusport . "," . $radiusacctport . "," . $radiuskey) ;
|
|
230
|
}
|
|
231
|
fclose($fd) ;
|
|
232
|
}
|
|
233
|
|
|
234
|
|
|
235
|
if ($g['booting'])
|
|
236
|
echo "done\n";
|
|
237
|
|
|
238
|
} else {
|
|
239
|
killbypid("{$g['varrun_path']}/mini_httpd.cp.pid");
|
|
240
|
killbypid("{$g['varrun_path']}/minicron.pid");
|
|
241
|
captiveportal_radius_stop_all() ;
|
|
242
|
mwexec("/sbin/sysctl net.link.ether.ipfw=0");
|
|
243
|
if (!isset($config['shaper']['enable'])) {
|
|
244
|
/* unload ipfw */
|
|
245
|
mwexec("/sbin/kldunload ipfw");
|
|
246
|
} else {
|
|
247
|
/* shaper is on - just remove our rules */
|
|
248
|
mwexec("/sbin/ipfw -f delete set 1");
|
|
249
|
mwexec("/sbin/ipfw -f delete set 2");
|
|
250
|
mwexec("/sbin/ipfw -f delete set 3");
|
|
251
|
}
|
|
252
|
}
|
|
253
|
|
|
254
|
return 0;
|
|
255
|
}
|
|
256
|
|
|
257
|
function captiveportal_rules_generate() {
|
|
258
|
global $config, $g;
|
|
259
|
|
|
260
|
$cpifn = $config['captiveportal']['interface'];
|
|
261
|
$cpif = $config['interfaces'][$cpifn]['if'];
|
|
262
|
$cpip = $config['interfaces'][$cpifn]['ipaddr'];
|
|
263
|
|
|
264
|
/* note: the captive portal daemon inserts all pass rules for authenticated
|
|
265
|
clients as skipto 50000 rules to make traffic shaping work */
|
|
266
|
|
|
267
|
$cprules = "";
|
|
268
|
|
|
269
|
/* captive portal on LAN interface? */
|
|
270
|
if ($cpifn == "lan") {
|
|
271
|
/* add anti-lockout rules */
|
|
272
|
$cprules .= <<<EOD
|
|
273
|
add 500 set 1 pass all from $cpip to any out via $cpif
|
|
274
|
add 501 set 1 pass all from any to $cpip in via $cpif
|
|
275
|
|
|
276
|
EOD;
|
|
277
|
}
|
|
278
|
|
|
279
|
$cprules .= <<<EOD
|
|
280
|
# skip to traffic shaper if not on captive portal interface
|
|
281
|
add 1000 set 1 skipto 50000 all from any to any not layer2 not via $cpif
|
|
282
|
# pass all layer2 traffic on other interfaces
|
|
283
|
add 1001 set 1 pass layer2 not via $cpif
|
|
284
|
|
|
285
|
# layer 2: pass ARP
|
|
286
|
add 1100 set 1 pass layer2 mac-type arp
|
|
287
|
# layer 2: block anything else non-IP
|
|
288
|
add 1101 set 1 deny layer2 not mac-type ip
|
|
289
|
# layer 2: check if MAC addresses of authenticated clients are correct
|
|
290
|
add 1102 set 1 skipto 20000 layer2
|
|
291
|
|
|
292
|
# allow access to our DHCP server (which needs to be able to ping clients as well)
|
|
293
|
add 1200 set 1 pass udp from any 68 to 255.255.255.255 67 in
|
|
294
|
add 1201 set 1 pass udp from any 68 to $cpip 67 in
|
|
295
|
add 1202 set 1 pass udp from $cpip 67 to any 68 out
|
|
296
|
add 1203 set 1 pass icmp from $cpip to any out icmptype 8
|
|
297
|
add 1204 set 1 pass icmp from any to $cpip in icmptype 0
|
|
298
|
|
|
299
|
# allow access to our DNS forwarder
|
|
300
|
add 1300 set 1 pass udp from any to $cpip 53 in
|
|
301
|
add 1301 set 1 pass udp from $cpip 53 to any out
|
|
302
|
|
|
303
|
# allow access to our web server
|
|
304
|
add 1302 set 1 pass tcp from any to $cpip 8000 in
|
|
305
|
add 1303 set 1 pass tcp from $cpip 8000 to any out
|
|
306
|
|
|
307
|
EOD;
|
|
308
|
|
|
309
|
if (isset($config['captiveportal']['httpslogin'])) {
|
|
310
|
$cprules .= <<<EOD
|
|
311
|
add 1304 set 1 pass tcp from any to $cpip 8001 in
|
|
312
|
add 1305 set 1 pass tcp from $cpip 8001 to any out
|
|
313
|
|
|
314
|
EOD;
|
|
315
|
}
|
|
316
|
|
|
317
|
$cprules .= <<<EOD
|
|
318
|
|
|
319
|
# ... 10000-19899: rules per authenticated client go here...
|
|
320
|
|
|
321
|
# redirect non-authenticated clients to captive portal
|
|
322
|
add 19900 set 1 fwd 127.0.0.1,8000 tcp from any to any 80 in
|
|
323
|
# let the responses from the captive portal web server back out
|
|
324
|
add 19901 set 1 pass tcp from any 80 to any out
|
|
325
|
# block everything else
|
|
326
|
add 19902 set 1 deny all from any to any
|
|
327
|
|
|
328
|
# ... 20000-29899: layer2 block rules per authenticated client go here...
|
|
329
|
|
|
330
|
# pass everything else on layer2
|
|
331
|
add 29900 set 1 pass all from any to any layer2
|
|
332
|
|
|
333
|
EOD;
|
|
334
|
|
|
335
|
return $cprules;
|
|
336
|
}
|
|
337
|
|
|
338
|
/* remove clients that have been around for longer than the specified amount of time */
|
|
339
|
/* db file structure: timestamp,ipfw_rule_no,clientip,clientmac,username,sessionid */
|
|
340
|
function captiveportal_prune_old() {
|
|
341
|
|
|
342
|
global $g, $config;
|
|
343
|
|
|
344
|
/* check for expired entries */
|
|
345
|
if ($config['captiveportal']['timeout'])
|
|
346
|
$timeout = $config['captiveportal']['timeout'] * 60;
|
|
347
|
else
|
|
348
|
$timeout = 0;
|
|
349
|
|
|
350
|
if ($config['captiveportal']['idletimeout'])
|
|
351
|
$idletimeout = $config['captiveportal']['idletimeout'] * 60;
|
|
352
|
else
|
|
353
|
$idletimeout = 0;
|
|
354
|
|
|
355
|
if (!$timeout && !$idletimeout)
|
|
356
|
return;
|
|
357
|
|
|
358
|
captiveportal_lock();
|
|
359
|
|
|
360
|
/* read database */
|
|
361
|
$cpdb = captiveportal_read_db();
|
|
362
|
|
|
363
|
$radiusservers = captiveportal_get_radius_servers();
|
|
364
|
|
|
365
|
for ($i = 0; $i < count($cpdb); $i++) {
|
|
366
|
|
|
367
|
$timedout = false;
|
|
368
|
|
|
369
|
/* hard timeout? */
|
|
370
|
if ($timeout) {
|
|
371
|
if ((time() - $cpdb[$i][0]) >= $timeout)
|
|
372
|
$timedout = true;
|
|
373
|
}
|
|
374
|
|
|
375
|
/* if an idle timeout is specified, get last activity timestamp from ipfw */
|
|
376
|
if (!$timedout && $idletimeout) {
|
|
377
|
$lastact = captiveportal_get_last_activity($cpdb[$i][1]);
|
|
378
|
if ($lastact && ((time() - $lastact) >= $idletimeout))
|
|
379
|
$timedout = true;
|
|
380
|
}
|
|
381
|
|
|
382
|
if ($timedout) {
|
|
383
|
/* this client needs to be deleted - remove ipfw rules */
|
|
384
|
if (isset($config['captiveportal']['radacct_enable']) && isset($radiusservers[0])) {
|
|
385
|
RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno
|
|
386
|
$cpdb[$i][4], // username
|
|
387
|
$cpdb[$i][5], // sessionid
|
|
388
|
$cpdb[$i][0], // start time
|
|
389
|
$radiusservers[0]['ipaddr'],
|
|
390
|
$radiusservers[0]['acctport'],
|
|
391
|
$radiusservers[0]['key']);
|
|
392
|
}
|
|
393
|
mwexec("/sbin/ipfw delete " . $cpdb[$i][1] . " " . ($cpdb[$i][1]+10000));
|
|
394
|
unset($cpdb[$i]);
|
|
395
|
}
|
|
396
|
}
|
|
397
|
|
|
398
|
/* write database */
|
|
399
|
captiveportal_write_db($cpdb);
|
|
400
|
|
|
401
|
captiveportal_unlock();
|
|
402
|
}
|
|
403
|
|
|
404
|
/* remove a single client by ipfw rule number */
|
|
405
|
function captiveportal_disconnect_client($id) {
|
|
406
|
|
|
407
|
global $g, $config;
|
|
408
|
|
|
409
|
captiveportal_lock();
|
|
410
|
|
|
411
|
/* read database */
|
|
412
|
$cpdb = captiveportal_read_db();
|
|
413
|
$radiusservers = captiveportal_get_radius_servers();
|
|
414
|
|
|
415
|
/* find entry */
|
|
416
|
for ($i = 0; $i < count($cpdb); $i++) {
|
|
417
|
if ($cpdb[$i][1] == $id) {
|
|
418
|
/* this client needs to be deleted - remove ipfw rules */
|
|
419
|
if (isset($config['captiveportal']['radacct_enable']) && isset($radiusservers[0])) {
|
|
420
|
RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno
|
|
421
|
$cpdb[$i][4], // username
|
|
422
|
$cpdb[$i][5], // sessionid
|
|
423
|
$cpdb[$i][0], // start time
|
|
424
|
$radiusservers[0]['ipaddr'],
|
|
425
|
$radiusservers[0]['acctport'],
|
|
426
|
$radiusservers[0]['key']);
|
|
427
|
}
|
|
428
|
mwexec("/sbin/ipfw delete " . $cpdb[$i][1] . " " . ($cpdb[$i][1]+10000));
|
|
429
|
unset($cpdb[$i]);
|
|
430
|
break;
|
|
431
|
}
|
|
432
|
}
|
|
433
|
|
|
434
|
/* write database */
|
|
435
|
captiveportal_write_db($cpdb);
|
|
436
|
|
|
437
|
captiveportal_unlock();
|
|
438
|
}
|
|
439
|
|
|
440
|
/* send RADIUS acct stop for all current clients */
|
|
441
|
function captiveportal_radius_stop_all() {
|
|
442
|
global $g, $config;
|
|
443
|
|
|
444
|
captiveportal_lock() ;
|
|
445
|
$cpdb = captiveportal_read_db() ;
|
|
446
|
|
|
447
|
$radiusservers = captiveportal_get_radius_servers();
|
|
448
|
|
|
449
|
if (isset($radiusservers[0])) {
|
|
450
|
for ($i = 0; $i < count($cpdb); $i++) {
|
|
451
|
RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno
|
|
452
|
$cpdb[$i][4], // username
|
|
453
|
$cpdb[$i][5], // sessionid
|
|
454
|
$cpdb[$i][0], // start time
|
|
455
|
$radiusservers[0]['ipaddr'],
|
|
456
|
$radiusservers[0]['acctport'],
|
|
457
|
$radiusservers[0]['key']);
|
|
458
|
}
|
|
459
|
}
|
|
460
|
captiveportal_unlock() ;
|
|
461
|
}
|
|
462
|
|
|
463
|
function captiveportal_passthrumac_configure() {
|
|
464
|
global $config, $g;
|
|
465
|
|
|
466
|
/* clear out passthru macs, if necessary */
|
|
467
|
if (file_exists("{$g['vardb_path']}/captiveportal_mac.db")) {
|
|
468
|
unlink("{$g['vardb_path']}/captiveportal_mac.db");
|
|
469
|
}
|
|
470
|
|
|
471
|
if (is_array($config['captiveportal']['passthrumac'])) {
|
|
472
|
|
|
473
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_mac.db", "w");
|
|
474
|
if (!$fd) {
|
|
475
|
printf("Error: cannot open passthru mac DB file in captiveportal_passthrumac_configure().\n");
|
|
476
|
return 1;
|
|
477
|
}
|
|
478
|
|
|
479
|
foreach ($config['captiveportal']['passthrumac'] as $macent) {
|
|
480
|
/* record passthru mac so it can be recognized and let thru */
|
|
481
|
fwrite($fd, $macent['mac'] . "\n");
|
|
482
|
}
|
|
483
|
|
|
484
|
fclose($fd);
|
|
485
|
}
|
|
486
|
|
|
487
|
return 0;
|
|
488
|
}
|
|
489
|
|
|
490
|
function captiveportal_allowedip_configure() {
|
|
491
|
global $config, $g;
|
|
492
|
|
|
493
|
captiveportal_lock() ;
|
|
494
|
|
|
495
|
/* clear out existing allowed ips, if necessary */
|
|
496
|
if (file_exists("{$g['vardb_path']}/captiveportal_ip.db")) {
|
|
497
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_ip.db", "r");
|
|
498
|
if ($fd) {
|
|
499
|
while (!feof($fd)) {
|
|
500
|
$line = trim(fgets($fd));
|
|
501
|
if($line) {
|
|
502
|
list($ip,$rule) = explode(",",$line);
|
|
503
|
mwexec("/sbin/ipfw delete $rule") ;
|
|
504
|
}
|
|
505
|
}
|
|
506
|
}
|
|
507
|
fclose($fd) ;
|
|
508
|
unlink("{$g['vardb_path']}/captiveportal_ip.db");
|
|
509
|
}
|
|
510
|
|
|
511
|
/* get next ipfw rule number */
|
|
512
|
if (file_exists("{$g['vardb_path']}/captiveportal.nextrule"))
|
|
513
|
$ruleno = trim(file_get_contents("{$g['vardb_path']}/captiveportal.nextrule"));
|
|
514
|
if (!$ruleno)
|
|
515
|
$ruleno = 10000; /* first rule number */
|
|
516
|
|
|
517
|
if (is_array($config['captiveportal']['allowedip'])) {
|
|
518
|
|
|
519
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_ip.db", "w");
|
|
520
|
if (!$fd) {
|
|
521
|
printf("Error: cannot open allowed ip DB file in captiveportal_allowedip_configure().\n");
|
|
522
|
captiveportal_unlock() ;
|
|
523
|
return 1;
|
|
524
|
}
|
|
525
|
|
|
526
|
foreach ($config['captiveportal']['allowedip'] as $ipent) {
|
|
527
|
/* record allowed ip so it can be recognized and removed later */
|
|
528
|
fwrite($fd, $ipent['ip'] . "," . $ruleno ."\n");
|
|
529
|
/* insert ipfw rule to allow ip thru */
|
|
530
|
if($ipent['dir'] == "from") {
|
|
531
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from ".$ipent['ip']." to any in") ;
|
|
532
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from any to ".$ipent['ip']." out") ;
|
|
533
|
} else {
|
|
534
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from any to ".$ipent['ip']." in") ;
|
|
535
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from ".$ipent['ip']." to any out") ;
|
|
536
|
}
|
|
537
|
$ruleno++ ;
|
|
538
|
if ($ruleno > 19899)
|
|
539
|
$ruleno = 10000;
|
|
540
|
}
|
|
541
|
|
|
542
|
fclose($fd);
|
|
543
|
|
|
544
|
/* write next rule number */
|
|
545
|
$fd = @fopen("{$g['vardb_path']}/captiveportal.nextrule", "w");
|
|
546
|
if ($fd) {
|
|
547
|
fwrite($fd, $ruleno);
|
|
548
|
fclose($fd);
|
|
549
|
}
|
|
550
|
}
|
|
551
|
|
|
552
|
captiveportal_unlock() ;
|
|
553
|
return 0;
|
|
554
|
}
|
|
555
|
|
|
556
|
/* get last activity timestamp given ipfw rule number */
|
|
557
|
function captiveportal_get_last_activity($ruleno) {
|
|
558
|
|
|
559
|
exec("/sbin/ipfw -T list {$ruleno} 2>/dev/null", $ipfwoutput);
|
|
560
|
|
|
561
|
/* in */
|
|
562
|
if ($ipfwoutput[0]) {
|
|
563
|
$ri = explode(" ", $ipfwoutput[0]);
|
|
564
|
if ($ri[1])
|
|
565
|
return $ri[1];
|
|
566
|
}
|
|
567
|
|
|
568
|
return 0;
|
|
569
|
}
|
|
570
|
|
|
571
|
/* read captive portal DB into array */
|
|
572
|
function captiveportal_read_db() {
|
|
573
|
|
|
574
|
global $g;
|
|
575
|
|
|
576
|
$cpdb = array();
|
|
577
|
$fd = @fopen("{$g['vardb_path']}/captiveportal.db", "r");
|
|
578
|
if ($fd) {
|
|
579
|
while (!feof($fd)) {
|
|
580
|
$line = trim(fgets($fd));
|
|
581
|
if ($line) {
|
|
582
|
$cpdb[] = explode(",", $line);
|
|
583
|
}
|
|
584
|
}
|
|
585
|
fclose($fd);
|
|
586
|
}
|
|
587
|
return $cpdb;
|
|
588
|
}
|
|
589
|
|
|
590
|
/* write captive portal DB */
|
|
591
|
function captiveportal_write_db($cpdb) {
|
|
592
|
|
|
593
|
global $g;
|
|
594
|
|
|
595
|
$fd = @fopen("{$g['vardb_path']}/captiveportal.db", "w");
|
|
596
|
if ($fd) {
|
|
597
|
foreach ($cpdb as $cpent) {
|
|
598
|
fwrite($fd, join(",", $cpent) . "\n");
|
|
599
|
}
|
|
600
|
fclose($fd);
|
|
601
|
}
|
|
602
|
}
|
|
603
|
|
|
604
|
/* read RADIUS servers into array */
|
|
605
|
function captiveportal_get_radius_servers() {
|
|
606
|
|
|
607
|
global $g;
|
|
608
|
|
|
609
|
if (file_exists("{$g['vardb_path']}/captiveportal_radius.db")) {
|
|
610
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_radius.db","r");
|
|
611
|
if ($fd) {
|
|
612
|
$radiusservers = array();
|
|
613
|
while (!feof($fd)) {
|
|
614
|
$line = trim(fgets($fd));
|
|
615
|
if ($line) {
|
|
616
|
$radsrv = array();
|
|
617
|
list($radsrv['ipaddr'],$radsrv['port'],$radsrv['acctport'],$radsrv['key']) = explode(",",$line);
|
|
618
|
$radiusservers[] = $radsrv;
|
|
619
|
}
|
|
620
|
}
|
|
621
|
fclose($fd);
|
|
622
|
|
|
623
|
return $radiusservers;
|
|
624
|
}
|
|
625
|
}
|
|
626
|
|
|
627
|
return false;
|
|
628
|
}
|
|
629
|
|
|
630
|
/* lock captive portal information, decide that the lock file is stale after
|
|
631
|
10 seconds */
|
|
632
|
function captiveportal_lock() {
|
|
633
|
|
|
634
|
global $g;
|
|
635
|
|
|
636
|
$lockfile = "{$g['varrun_path']}/captiveportal.lock";
|
|
637
|
|
|
638
|
$n = 0;
|
|
639
|
while ($n < 10) {
|
|
640
|
/* open the lock file in append mode to avoid race condition */
|
|
641
|
if ($fd = @fopen($lockfile, "x")) {
|
|
642
|
/* succeeded */
|
|
643
|
fclose($fd);
|
|
644
|
return;
|
|
645
|
} else {
|
|
646
|
/* file locked, wait and try again */
|
|
647
|
sleep(1);
|
|
648
|
$n++;
|
|
649
|
}
|
|
650
|
}
|
|
651
|
}
|
|
652
|
|
|
653
|
/* unlock configuration file */
|
|
654
|
function captiveportal_unlock() {
|
|
655
|
|
|
656
|
global $g;
|
|
657
|
|
|
658
|
$lockfile = "{$g['varrun_path']}/captiveportal.lock";
|
|
659
|
|
|
660
|
if (file_exists($lockfile))
|
|
661
|
unlink($lockfile);
|
|
662
|
}
|
|
663
|
|
|
664
|
?>
|