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
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
|
<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb;
/**
* Session class
*/
class session
{
var $cookie_data = array();
var $page = array();
var $data = array();
var $browser = '';
var $forwarded_for = '';
var $host = '';
var $session_id = '';
var $ip = '';
var $load = 0;
var $time_now = 0;
var $update_session_page = true;
/**
* Extract current session page
*
* @param string $root_path current root path (phpbb_root_path)
* @return array
*/
static function extract_current_page($root_path)
{
global $request, $symfony_request, $phpbb_filesystem;
$page_array = array();
// First of all, get the request uri...
$script_name = $request->escape($symfony_request->getScriptName(), true);
$args = $request->escape(explode('&', $symfony_request->getQueryString()), true);
// If we are unable to get the script name we use REQUEST_URI as a failover and note it within the page array for easier support...
if (!$script_name)
{
$script_name = htmlspecialchars_decode($request->server('REQUEST_URI'));
$script_name = (($pos = strpos($script_name, '?')) !== false) ? substr($script_name, 0, $pos) : $script_name;
$page_array['failover'] = 1;
}
// Replace backslashes and doubled slashes (could happen on some proxy setups)
$script_name = str_replace(array('\\', '//'), '/', $script_name);
// Now, remove the sid and let us get a clean query string...
$use_args = array();
// Since some browser do not encode correctly we need to do this with some "special" characters...
// " -> %22, ' => %27, < -> %3C, > -> %3E
$find = array('"', "'", '<', '>', '"', '<', '>');
$replace = array('%22', '%27', '%3C', '%3E', '%22', '%3C', '%3E');
foreach ($args as $key => $argument)
{
if (strpos($argument, 'sid=') === 0)
{
continue;
}
$use_args[] = str_replace($find, $replace, $argument);
}
unset($args);
// The following examples given are for an request uri of {path to the phpbb directory}/adm/index.php?i=10&b=2
// The current query string
$query_string = trim(implode('&', $use_args));
// basenamed page name (for example: index.php)
$page_name = (substr($script_name, -1, 1) == '/') ? '' : basename($script_name);
$page_name = urlencode(htmlspecialchars($page_name));
$symfony_request_path = $phpbb_filesystem->clean_path($symfony_request->getPathInfo());
if ($symfony_request_path !== '/')
{
$page_name .= str_replace('%2F', '/', urlencode($symfony_request_path));
}
// current directory within the phpBB root (for example: adm)
$root_dirs = explode('/', str_replace('\\', '/', phpbb_realpath($root_path)));
$page_dirs = explode('/', str_replace('\\', '/', phpbb_realpath('./')));
$intersection = array_intersect_assoc($root_dirs, $page_dirs);
$root_dirs = array_diff_assoc($root_dirs, $intersection);
$page_dirs = array_diff_assoc($page_dirs, $intersection);
$page_dir = str_repeat('../', sizeof($root_dirs)) . implode('/', $page_dirs);
if ($page_dir && substr($page_dir, -1, 1) == '/')
{
$page_dir = substr($page_dir, 0, -1);
}
// Current page from phpBB root (for example: adm/index.php?i=10&b=2)
$page = (($page_dir) ? $page_dir . '/' : '') . $page_name;
if ($query_string)
{
$page .= '?' . $query_string;
}
// The script path from the webroot to the current directory (for example: /phpBB3/adm/) : always prefixed with / and ends in /
$script_path = $symfony_request->getBasePath();
// The script path from the webroot to the phpBB root (for example: /phpBB3/)
$script_dirs = explode('/', $script_path);
array_splice($script_dirs, -sizeof($page_dirs));
$root_script_path = implode('/', $script_dirs) . (sizeof($root_dirs) ? '/' . implode('/', $root_dirs) : '');
// We are on the base level (phpBB root == webroot), lets adjust the variables a bit...
if (!$root_script_path)
{
$root_script_path = ($page_dir) ? str_replace($page_dir, '', $script_path) : $script_path;
}
$script_path .= (substr($script_path, -1, 1) == '/') ? '' : '/';
$root_script_path .= (substr($root_script_path, -1, 1) == '/') ? '' : '/';
$forum_id = $request->variable('f', 0);
// maximum forum id value is maximum value of mediumint unsigned column
$forum_id = ($forum_id > 0 && $forum_id < 16777215) ? $forum_id : 0;
$page_array += array(
'page_name' => $page_name,
'page_dir' => $page_dir,
'query_string' => $query_string,
'script_path' => str_replace(' ', '%20', htmlspecialchars($script_path)),
'root_script_path' => str_replace(' ', '%20', htmlspecialchars($root_script_path)),
'page' => $page,
'forum' => $forum_id,
);
return $page_array;
}
/**
* Get valid hostname/port. HTTP_HOST is used, SERVER_NAME if HTTP_HOST not present.
*/
function extract_current_hostname()
{
global $config, $request;
// Get hostname
$host = htmlspecialchars_decode($request->header('Host', $request->server('SERVER_NAME')));
// Should be a string and lowered
$host = (string) strtolower($host);
// If host is equal the cookie domain or the server name (if config is set), then we assume it is valid
if ((isset($config['cookie_domain']) && $host === $config['cookie_domain']) || (isset($config['server_name']) && $host === $config['server_name']))
{
return $host;
}
// Is the host actually a IP? If so, we use the IP... (IPv4)
if (long2ip(ip2long($host)) === $host)
{
return $host;
}
// Now return the hostname (this also removes any port definition). The http:// is prepended to construct a valid URL, hosts never have a scheme assigned
$host = @parse_url('http://' . $host);
$host = (!empty($host['host'])) ? $host['host'] : '';
// Remove any portions not removed by parse_url (#)
$host = str_replace('#', '', $host);
// If, by any means, the host is now empty, we will use a "best approach" way to guess one
if (empty($host))
{
if (!empty($config['server_name']))
{
$host = $config['server_name'];
}
else if (!empty($config['cookie_domain']))
{
$host = (strpos($config['cookie_domain'], '.') === 0) ? substr($config['cookie_domain'], 1) : $config['cookie_domain'];
}
else
{
// Set to OS hostname or localhost
$host = (function_exists('php_uname')) ? php_uname('n') : 'localhost';
}
}
// It may be still no valid host, but for sure only a hostname (we may further expand on the cookie domain... if set)
return $host;
}
/**
* Start session management
*
* This is where all session activity begins. We gather various pieces of
* information from the client and server. We test to see if a session already
* exists. If it does, fine and dandy. If it doesn't we'll go on to create a
* new one ... pretty logical heh? We also examine the system load (if we're
* running on a system which makes such information readily available) and
* halt if it's above an admin definable limit.
*
* @param bool $update_session_page if true the session page gets updated.
* This can be set to circumvent certain scripts to update the users last visited page.
*/
function session_begin($update_session_page = true)
{
global $phpEx, $SID, $_SID, $_EXTRA_URL, $db, $config, $phpbb_root_path;
global $request, $phpbb_container, $user, $phpbb_log;
// Give us some basic information
$this->time_now = time();
$this->cookie_data = array('u' => 0, 'k' => '');
$this->update_session_page = $update_session_page;
$this->browser = $request->header('User-Agent');
$this->referer = $request->header('Referer');
$this->forwarded_for = $request->header('X-Forwarded-For');
$this->host = $this->extract_current_hostname();
$this->page = $this->extract_current_page($phpbb_root_path);
// if the forwarded for header shall be checked we have to validate its contents
if ($config['forwarded_for_check'])
{
$this->forwarded_for = preg_replace('# {2,}#', ' ', str_replace(',', ' ', $this->forwarded_for));
// split the list of IPs
$ips = explode(' ', $this->forwarded_for);
foreach ($ips as $ip)
{
// check IPv4 first, the IPv6 is hopefully only going to be used very seldomly
if (!empty($ip) && !preg_match(get_preg_expression('ipv4'), $ip) && !preg_match(get_preg_expression('ipv6'), $ip))
{
// contains invalid data, don't use the forwarded for header
$this->forwarded_for = '';
break;
}
}
}
else
{
$this->forwarded_for = '';
}
if ($request->is_set($config['cookie_name'] . '_sid', \phpbb\request\request_interface::COOKIE) || $request->is_set($config['cookie_name'] . '_u', \phpbb\request\request_interface::COOKIE))
{
$this->cookie_data['u'] = $request->variable($config['cookie_name'] . '_u', 0, false, \phpbb\request\request_interface::COOKIE);
$this->cookie_data['k'] = $request->variable($config['cookie_name'] . '_k', '', false, \phpbb\request\request_interface::COOKIE);
$this->session_id = $request->variable($config['cookie_name'] . '_sid', '', false, \phpbb\request\request_interface::COOKIE);
$SID = (defined('NEED_SID')) ? '?sid=' . $this->session_id : '?sid=';
$_SID = (defined('NEED_SID')) ? $this->session_id : '';
if (empty($this->session_id))
{
$this->session_id = $_SID = $request->variable('sid', '');
$SID = '?sid=' . $this->session_id;
$this->cookie_data = array('u' => 0, 'k' => '');
}
}
else
{
$this->session_id = $_SID = $request->variable('sid', '');
$SID = '?sid=' . $this->session_id;
}
$_EXTRA_URL = array();
// Why no forwarded_for et al? Well, too easily spoofed. With the results of my recent requests
// it's pretty clear that in the majority of cases you'll at least be left with a proxy/cache ip.
$this->ip = htmlspecialchars_decode($request->server('REMOTE_ADDR'));
$this->ip = preg_replace('# {2,}#', ' ', str_replace(',', ' ', $this->ip));
// split the list of IPs
$ips = explode(' ', trim($this->ip));
// Default IP if REMOTE_ADDR is invalid
$this->ip = '127.0.0.1';
foreach ($ips as $ip)
{
if (function_exists('phpbb_ip_normalise'))
{
// Normalise IP address
$ip = phpbb_ip_normalise($ip);
if (empty($ip))
{
// IP address is invalid.
break;
}
// IP address is valid.
$this->ip = $ip;
// Skip legacy code.
continue;
}
if (preg_match(get_preg_expression('ipv4'), $ip))
{
$this->ip = $ip;
}
else if (preg_match(get_preg_expression('ipv6'), $ip))
{
// Quick check for IPv4-mapped address in IPv6
if (stripos($ip, '::ffff:') === 0)
{
$ipv4 = substr($ip, 7);
if (preg_match(get_preg_expression('ipv4'), $ipv4))
{
$ip = $ipv4;
}
}
$this->ip = $ip;
}
else
{
// We want to use the last valid address in the chain
// Leave foreach loop when address is invalid
break;
}
}
$this->load = false;
// Load limit check (if applicable)
if ($config['limit_load'] || $config['limit_search_load'])
{
if ((function_exists('sys_getloadavg') && $load = sys_getloadavg()) || ($load = explode(' ', @file_get_contents('/proc/loadavg'))))
{
$this->load = array_slice($load, 0, 1);
$this->load = floatval($this->load[0]);
}
else
{
$config->set('limit_load', '0');
$config->set('limit_search_load', '0');
}
}
// if no session id is set, redirect to index.php
$session_id = $request->variable('sid', '');
if (defined('NEED_SID') && (empty($session_id) || $this->session_id !== $session_id))
{
send_status_line(401, 'Unauthorized');
redirect(append_sid("{$phpbb_root_path}index.$phpEx"));
}
// if session id is set
if (!empty($this->session_id))
{
$sql = 'SELECT u.*, s.*
FROM ' . SESSIONS_TABLE . ' s, ' . USERS_TABLE . " u
WHERE s.session_id = '" . $db->sql_escape($this->session_id) . "'
AND u.user_id = s.session_user_id";
$result = $db->sql_query($sql);
$this->data = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
// Did the session exist in the DB?
if (isset($this->data['user_id']))
{
// Validate IP length according to admin ... enforces an IP
// check on bots if admin requires this
// $quadcheck = ($config['ip_check_bot'] && $this->data['user_type'] & USER_BOT) ? 4 : $config['ip_check'];
if (strpos($this->ip, ':') !== false && strpos($this->data['session_ip'], ':') !== false)
{
$s_ip = short_ipv6($this->data['session_ip'], $config['ip_check']);
$u_ip = short_ipv6($this->ip, $config['ip_check']);
}
else
{
$s_ip = implode('.', array_slice(explode('.', $this->data['session_ip']), 0, $config['ip_check']));
$u_ip = implode('.', array_slice(explode('.', $this->ip), 0, $config['ip_check']));
}
$s_browser = ($config['browser_check']) ? trim(strtolower(substr($this->data['session_browser'], 0, 149))) : '';
$u_browser = ($config['browser_check']) ? trim(strtolower(substr($this->browser, 0, 149))) : '';
$s_forwarded_for = ($config['forwarded_for_check']) ? substr($this->data['session_forwarded_for'], 0, 254) : '';
$u_forwarded_for = ($config['forwarded_for_check']) ? substr($this->forwarded_for, 0, 254) : '';
// referer checks
// The @ before $config['referer_validation'] suppresses notices present while running the updater
$check_referer_path = (@$config['referer_validation'] == REFERER_VALIDATE_PATH);
$referer_valid = true;
// we assume HEAD and TRACE to be foul play and thus only whitelist GET
if (@$config['referer_validation'] && strtolower($request->server('REQUEST_METHOD')) !== 'get')
{
$referer_valid = $this->validate_referer($check_referer_path);
}
if ($u_ip === $s_ip && $s_browser === $u_browser && $s_forwarded_for === $u_forwarded_for && $referer_valid)
{
$session_expired = false;
// Check whether the session is still valid if we have one
/* @var $provider_collection \phpbb\auth\provider_collection */
$provider_collection = $phpbb_container->get('auth.provider_collection');
$provider = $provider_collection->get_provider();
if (!($provider instanceof \phpbb\auth\provider\provider_interface))
{
throw new \RuntimeException($provider . ' must implement \phpbb\auth\provider\provider_interface');
}
$ret = $provider->validate_session($this->data);
if ($ret !== null && !$ret)
{
$session_expired = true;
}
if (!$session_expired)
{
// Check the session length timeframe if autologin is not enabled.
// Else check the autologin length... and also removing those having autologin enabled but no longer allowed board-wide.
if (!$this->data['session_autologin'])
{
if ($this->data['session_time'] < $this->time_now - ($config['session_length'] + 60))
{
$session_expired = true;
}
}
else if (!$config['allow_autologin'] || ($config['max_autologin_time'] && $this->data['session_time'] < $this->time_now - (86400 * (int) $config['max_autologin_time']) + 60))
{
$session_expired = true;
}
}
if (!$session_expired)
{
// Only update session DB a minute or so after last update or if page changes
if ($this->time_now - $this->data['session_time'] > 60 || ($this->update_session_page && $this->data['session_page'] != $this->page['page']))
{
$sql_ary = array('session_time' => $this->time_now);
// Do not update the session page for ajax requests, so the view online still works as intended
if ($this->update_session_page && !$request->is_ajax())
{
$sql_ary['session_page'] = substr($this->page['page'], 0, 199);
$sql_ary['session_forum_id'] = $this->page['forum'];
}
$db->sql_return_on_error(true);
$this->update_session($sql_ary);
$db->sql_return_on_error(false);
// If the database is not yet updated, there will be an error due to the session_forum_id
// @todo REMOVE for 3.0.2
if ($result === false)
{
unset($sql_ary['session_forum_id']);
$this->update_session($sql_ary);
}
if ($this->data['user_id'] != ANONYMOUS && !empty($config['new_member_post_limit']) && $this->data['user_new'] && $config['new_member_post_limit'] <= $this->data['user_posts'])
{
$this->leave_newly_registered();
}
}
$this->data['is_registered'] = ($this->data['user_id'] != ANONYMOUS && ($this->data['user_type'] == USER_NORMAL || $this->data['user_type'] == USER_FOUNDER)) ? true : false;
$this->data['is_bot'] = (!$this->data['is_registered'] && $this->data['user_id'] != ANONYMOUS) ? true : false;
$this->data['user_lang'] = basename($this->data['user_lang']);
return true;
}
}
else
{
// Added logging temporarly to help debug bugs...
if (defined('DEBUG') && $this->data['user_id'] != ANONYMOUS)
{
if ($referer_valid)
{
$phpbb_log->add('critical', $user->data['user_id'], $user->ip, 'LOG_IP_BROWSER_FORWARDED_CHECK', false, array(
$u_ip,
$s_ip,
$u_browser,
$s_browser,
htmlspecialchars($u_forwarded_for),
htmlspecialchars($s_forwarded_for)
));
}
else
{
$phpbb_log->add('critical', $user->data['user_id'], $user->ip, 'LOG_REFERER_INVALID', false, array($this->referer));
}
}
}
}
}
// If we reach here then no (valid) session exists. So we'll create a new one
return $this->session_create();
}
/**
* Create a new session
*
* If upon trying to start a session we discover there is nothing existing we
* jump here. Additionally this method is called directly during login to regenerate
* the session for the specific user. In this method we carry out a number of tasks;
* garbage collection, (search)bot checking, banned user comparison. Basically
* though this method will result in a new session for a specific user.
*/
function session_create($user_id = false, $set_admin = false, $persist_login = false, $viewonline = true)
{
global $SID, $_SID, $db, $config, $cache, $phpbb_root_path, $phpEx, $phpbb_container;
$this->data = array();
/* Garbage collection ... remove old sessions updating user information
// if necessary. It means (potentially) 11 queries but only infrequently
if ($this->time_now > $config['session_last_gc'] + $config['session_gc'])
{
$this->session_gc();
}*/
// Do we allow autologin on this board? No? Then override anything
// that may be requested here
if (!$config['allow_autologin'])
{
$this->cookie_data['k'] = $persist_login = false;
}
/**
* Here we do a bot check, oh er saucy! No, not that kind of bot
* check. We loop through the list of bots defined by the admin and
* see if we have any useragent and/or IP matches. If we do, this is a
* bot, act accordingly
*/
$bot = false;
$active_bots = $cache->obtain_bots();
foreach ($active_bots as $row)
{
if ($row['bot_agent'] && preg_match('#' . str_replace('\*', '.*?', preg_quote($row['bot_agent'], '#')) . '#i', $this->browser))
{
$bot = $row['user_id'];
}
// If ip is supplied, we will make sure the ip is matching too...
if ($row['bot_ip'] && ($bot || !$row['bot_agent']))
{
// Set bot to false, then we only have to set it to true if it is matching
$bot = false;
foreach (explode(',', $row['bot_ip']) as $bot_ip)
{
$bot_ip = trim($bot_ip);
if (!$bot_ip)
{
continue;
}
if (strpos($this->ip, $bot_ip) === 0)
{
$bot = (int) $row['user_id'];
break;
}
}
}
if ($bot)
{
break;
}
}
/* @var $provider_collection \phpbb\auth\provider_collection */
$provider_collection = $phpbb_container->get('auth.provider_collection');
$provider = $provider_collection->get_provider();
$this->data = $provider->autologin();
if ($user_id !== false && sizeof($this->data) && $this->data['user_id'] != $user_id)
{
$this->data = array();
}
if (sizeof($this->data))
{
$this->cookie_data['k'] = '';
$this->cookie_data['u'] = $this->data['user_id'];
}
// If we're presented with an autologin key we'll join against it.
// Else if we've been passed a user_id we'll grab data based on that
if (isset($this->cookie_data['k']) && $this->cookie_data['k'] && $this->cookie_data['u'] && !sizeof($this->data))
{
$sql = 'SELECT u.*
FROM ' . USERS_TABLE . ' u, ' . SESSIONS_KEYS_TABLE . ' k
WHERE u.user_id = ' . (int) $this->cookie_data['u'] . '
AND u.user_type IN (' . USER_NORMAL . ', ' . USER_FOUNDER . ")
AND k.user_id = u.user_id
AND k.key_id = '" . $db->sql_escape(md5($this->cookie_data['k'])) . "'";
$result = $db->sql_query($sql);
$user_data = $db->sql_fetchrow($result);
if ($user_id === false || (isset($user_data['user_id']) && $user_id == $user_data['user_id']))
{
$this->data = $user_data;
$bot = false;
}
$db->sql_freeresult($result);
}
if ($user_id !== false && !sizeof($this->data))
{
$this->cookie_data['k'] = '';
$this->cookie_data['u'] = $user_id;
$sql = 'SELECT *
FROM ' . USERS_TABLE . '
WHERE user_id = ' . (int) $this->cookie_data['u'] . '
AND user_type IN (' . USER_NORMAL . ', ' . USER_FOUNDER . ')';
$result = $db->sql_query($sql);
$this->data = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
$bot = false;
}
// Bot user, if they have a SID in the Request URI we need to get rid of it
// otherwise they'll index this page with the SID, duplicate content oh my!
if ($bot && isset($_GET['sid']))
{
send_status_line(301, 'Moved Permanently');
redirect(build_url(array('sid')));
}
// If no data was returned one or more of the following occurred:
// Key didn't match one in the DB
// User does not exist
// User is inactive
// User is bot
if (!sizeof($this->data) || !is_array($this->data))
{
$this->cookie_data['k'] = '';
$this->cookie_data['u'] = ($bot) ? $bot : ANONYMOUS;
if (!$bot)
{
$sql = 'SELECT *
FROM ' . USERS_TABLE . '
WHERE user_id = ' . (int) $this->cookie_data['u'];
}
else
{
// We give bots always the same session if it is not yet expired.
$sql = 'SELECT u.*, s.*
FROM ' . USERS_TABLE . ' u
LEFT JOIN ' . SESSIONS_TABLE . ' s ON (s.session_user_id = u.user_id)
WHERE u.user_id = ' . (int) $bot;
}
$result = $db->sql_query($sql);
$this->data = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
}
if ($this->data['user_id'] != ANONYMOUS && !$bot)
{
$this->data['session_last_visit'] = (isset($this->data['session_time']) && $this->data['session_time']) ? $this->data['session_time'] : (($this->data['user_lastvisit']) ? $this->data['user_lastvisit'] : time());
}
else
{
$this->data['session_last_visit'] = $this->time_now;
}
// Force user id to be integer...
$this->data['user_id'] = (int) $this->data['user_id'];
// At this stage we should have a filled data array, defined cookie u and k data.
// data array should contain recent session info if we're a real user and a recent
// session exists in which case session_id will also be set
// Is user banned? Are they excluded? Won't return on ban, exists within method
if ($this->data['user_type'] != USER_FOUNDER)
{
if (!$config['forwarded_for_check'])
{
$this->check_ban($this->data['user_id'], $this->ip);
}
else
{
$ips = explode(' ', $this->forwarded_for);
$ips[] = $this->ip;
$this->check_ban($this->data['user_id'], $ips);
}
}
$this->data['is_registered'] = (!$bot && $this->data['user_id'] != ANONYMOUS && ($this->data['user_type'] == USER_NORMAL || $this->data['user_type'] == USER_FOUNDER)) ? true : false;
$this->data['is_bot'] = ($bot) ? true : false;
// If our friend is a bot, we re-assign a previously assigned session
if ($this->data['is_bot'] && $bot == $this->data['user_id'] && $this->data['session_id'])
{
// Only assign the current session if the ip, browser and forwarded_for match...
if (strpos($this->ip, ':') !== false && strpos($this->data['session_ip'], ':') !== false)
{
$s_ip = short_ipv6($this->data['session_ip'], $config['ip_check']);
$u_ip = short_ipv6($this->ip, $config['ip_check']);
}
else
{
$s_ip = implode('.', array_slice(explode('.', $this->data['session_ip']), 0, $config['ip_check']));
$u_ip = implode('.', array_slice(explode('.', $this->ip), 0, $config['ip_check']));
}
$s_browser = ($config['browser_check']) ? trim(strtolower(substr($this->data['session_browser'], 0, 149))) : '';
$u_browser = ($config['browser_check']) ? trim(strtolower(substr($this->browser, 0, 149))) : '';
$s_forwarded_for = ($config['forwarded_for_check']) ? substr($this->data['session_forwarded_for'], 0, 254) : '';
$u_forwarded_for = ($config['forwarded_for_check']) ? substr($this->forwarded_for, 0, 254) : '';
if ($u_ip === $s_ip && $s_browser === $u_browser && $s_forwarded_for === $u_forwarded_for)
{
$this->session_id = $this->data['session_id'];
// Only update session DB a minute or so after last update or if page changes
if ($this->time_now - $this->data['session_time'] > 60 || ($this->update_session_page && $this->data['session_page'] != $this->page['page']))
{
$this->data['session_time'] = $this->data['session_last_visit'] = $this->time_now;
$sql_ary = array('session_time' => $this->time_now, 'session_last_visit' => $this->time_now, 'session_admin' => 0);
if ($this->update_session_page)
{
$sql_ary['session_page'] = substr($this->page['page'], 0, 199);
$sql_ary['session_forum_id'] = $this->page['forum'];
}
$this->update_session($sql_ary);
// Update the last visit time
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_lastvisit = ' . (int) $this->data['session_time'] . '
WHERE user_id = ' . (int) $this->data['user_id'];
$db->sql_query($sql);
}
$SID = '?sid=';
$_SID = '';
return true;
}
else
{
// If the ip and browser does not match make sure we only have one bot assigned to one session
$db->sql_query('DELETE FROM ' . SESSIONS_TABLE . ' WHERE session_user_id = ' . $this->data['user_id']);
}
}
$session_autologin = (($this->cookie_data['k'] || $persist_login) && $this->data['is_registered']) ? true : false;
$set_admin = ($set_admin && $this->data['is_registered']) ? true : false;
// Create or update the session
$sql_ary = array(
'session_user_id' => (int) $this->data['user_id'],
'session_start' => (int) $this->time_now,
'session_last_visit' => (int) $this->data['session_last_visit'],
'session_time' => (int) $this->time_now,
'session_browser' => (string) trim(substr($this->browser, 0, 149)),
'session_forwarded_for' => (string) $this->forwarded_for,
'session_ip' => (string) $this->ip,
'session_autologin' => ($session_autologin) ? 1 : 0,
'session_admin' => ($set_admin) ? 1 : 0,
'session_viewonline' => ($viewonline) ? 1 : 0,
);
if ($this->update_session_page)
{
$sql_ary['session_page'] = (string) substr($this->page['page'], 0, 199);
$sql_ary['session_forum_id'] = $this->page['forum'];
}
$db->sql_return_on_error(true);
$sql = 'DELETE
FROM ' . SESSIONS_TABLE . '
WHERE session_id = \'' . $db->sql_escape($this->session_id) . '\'
AND session_user_id = ' . ANONYMOUS;
if (!defined('IN_ERROR_HANDLER') && (!$this->session_id || !$db->sql_query($sql) || !$db->sql_affectedrows()))
{
// Limit new sessions in 1 minute period (if required)
if (empty($this->data['session_time']) && $config['active_sessions'])
{
// $db->sql_return_on_error(false);
$sql = 'SELECT COUNT(session_id) AS sessions
FROM ' . SESSIONS_TABLE . '
WHERE session_time >= ' . ($this->time_now - 60);
$result = $db->sql_query($sql);
$row = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
if ((int) $row['sessions'] > (int) $config['active_sessions'])
{
send_status_line(503, 'Service Unavailable');
trigger_error('BOARD_UNAVAILABLE');
}
}
}
// Since we re-create the session id here, the inserted row must be unique. Therefore, we display potential errors.
// Commented out because it will not allow forums to update correctly
// $db->sql_return_on_error(false);
// Something quite important: session_page always holds the *last* page visited, except for the *first* visit.
// We are not able to simply have an empty session_page btw, therefore we need to tell phpBB how to detect this special case.
// If the session id is empty, we have a completely new one and will set an "identifier" here. This identifier is able to be checked later.
if (empty($this->data['session_id']))
{
// This is a temporary variable, only set for the very first visit
$this->data['session_created'] = true;
}
$this->session_id = $this->data['session_id'] = md5(unique_id());
$sql_ary['session_id'] = (string) $this->session_id;
$sql_ary['session_page'] = (string) substr($this->page['page'], 0, 199);
$sql_ary['session_forum_id'] = $this->page['forum'];
$sql = 'INSERT INTO ' . SESSIONS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary);
$db->sql_query($sql);
$db->sql_return_on_error(false);
// Regenerate autologin/persistent login key
if ($session_autologin)
{
$this->set_login_key();
}
// refresh data
$SID = '?sid=' . $this->session_id;
$_SID = $this->session_id;
$this->data = array_merge($this->data, $sql_ary);
if (!$bot)
{
$cookie_expire = $this->time_now + (($config['max_autologin_time']) ? 86400 * (int) $config['max_autologin_time'] : 31536000);
$this->set_cookie('u', $this->cookie_data['u'], $cookie_expire);
$this->set_cookie('k', $this->cookie_data['k'], $cookie_expire);
$this->set_cookie('sid', $this->session_id, $cookie_expire);
unset($cookie_expire);
$sql = 'SELECT COUNT(session_id) AS sessions
FROM ' . SESSIONS_TABLE . '
WHERE session_user_id = ' . (int) $this->data['user_id'] . '
AND session_time >= ' . (int) ($this->time_now - (max($config['session_length'], $config['form_token_lifetime'])));
$result = $db->sql_query($sql);
$row = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
if ((int) $row['sessions'] <= 1 || empty($this->data['user_form_salt']))
{
$this->data['user_form_salt'] = unique_id();
// Update the form key
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_form_salt = \'' . $db->sql_escape($this->data['user_form_salt']) . '\'
WHERE user_id = ' . (int) $this->data['user_id'];
$db->sql_query($sql);
}
}
else
{
$this->data['session_time'] = $this->data['session_last_visit'] = $this->time_now;
// Update the last visit time
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_lastvisit = ' . (int) $this->data['session_time'] . '
WHERE user_id = ' . (int) $this->data['user_id'];
$db->sql_query($sql);
$SID = '?sid=';
$_SID = '';
}
return true;
}
/**
* Kills a session
*
* This method does what it says on the tin. It will delete a pre-existing session.
* It resets cookie information (destroying any autologin key within that cookie data)
* and update the users information from the relevant session data. It will then
* grab guest user information.
*/
function session_kill($new_session = true)
{
global $SID, $_SID, $db, $config, $phpbb_root_path, $phpEx, $phpbb_container;
$sql = 'DELETE FROM ' . SESSIONS_TABLE . "
WHERE session_id = '" . $db->sql_escape($this->session_id) . "'
AND session_user_id = " . (int) $this->data['user_id'];
$db->sql_query($sql);
// Allow connecting logout with external auth method logout
/* @var $provider_collection \phpbb\auth\provider_collection */
$provider_collection = $phpbb_container->get('auth.provider_collection');
$provider = $provider_collection->get_provider();
$provider->logout($this->data, $new_session);
if ($this->data['user_id'] != ANONYMOUS)
{
// Delete existing session, update last visit info first!
if (!isset($this->data['session_time']))
{
$this->data['session_time'] = time();
}
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_lastvisit = ' . (int) $this->data['session_time'] . '
WHERE user_id = ' . (int) $this->data['user_id'];
$db->sql_query($sql);
if ($this->cookie_data['k'])
{
$sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . '
WHERE user_id = ' . (int) $this->data['user_id'] . "
AND key_id = '" . $db->sql_escape(md5($this->cookie_data['k'])) . "'";
$db->sql_query($sql);
}
// Reset the data array
$this->data = array();
$sql = 'SELECT *
FROM ' . USERS_TABLE . '
WHERE user_id = ' . ANONYMOUS;
$result = $db->sql_query($sql);
$this->data = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
}
$cookie_expire = $this->time_now - 31536000;
$this->set_cookie('u', '', $cookie_expire);
$this->set_cookie('k', '', $cookie_expire);
$this->set_cookie('sid', '', $cookie_expire);
unset($cookie_expire);
$SID = '?sid=';
$this->session_id = $_SID = '';
// To make sure a valid session is created we create one for the anonymous user
if ($new_session)
{
$this->session_create(ANONYMOUS);
}
return true;
}
/**
* Session garbage collection
*
* This looks a lot more complex than it really is. Effectively we are
* deleting any sessions older than an admin definable limit. Due to the
* way in which we maintain session data we have to ensure we update user
* data before those sessions are destroyed. In addition this method
* removes autologin key information that is older than an admin defined
* limit.
*/
function session_gc()
{
global $db, $config, $phpbb_root_path, $phpEx, $phpbb_container;
$batch_size = 10;
if (!$this->time_now)
{
$this->time_now = time();
}
// Firstly, delete guest sessions
$sql = 'DELETE FROM ' . SESSIONS_TABLE . '
WHERE session_user_id = ' . ANONYMOUS . '
AND session_time < ' . (int) ($this->time_now - $config['session_length']);
$db->sql_query($sql);
// Get expired sessions, only most recent for each user
$sql = 'SELECT session_user_id, session_page, MAX(session_time) AS recent_time
FROM ' . SESSIONS_TABLE . '
WHERE session_time < ' . ($this->time_now - $config['session_length']) . '
GROUP BY session_user_id, session_page';
$result = $db->sql_query_limit($sql, $batch_size);
$del_user_id = array();
$del_sessions = 0;
while ($row = $db->sql_fetchrow($result))
{
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_lastvisit = ' . (int) $row['recent_time'] . ", user_lastpage = '" . $db->sql_escape($row['session_page']) . "'
WHERE user_id = " . (int) $row['session_user_id'];
$db->sql_query($sql);
$del_user_id[] = (int) $row['session_user_id'];
$del_sessions++;
}
$db->sql_freeresult($result);
if (sizeof($del_user_id))
{
// Delete expired sessions
$sql = 'DELETE FROM ' . SESSIONS_TABLE . '
WHERE ' . $db->sql_in_set('session_user_id', $del_user_id) . '
AND session_time < ' . ($this->time_now - $config['session_length']);
$db->sql_query($sql);
}
if ($del_sessions < $batch_size)
{
// Less than 10 users, update gc timer ... else we want gc
// called again to delete other sessions
$config->set('session_last_gc', $this->time_now, false);
if ($config['max_autologin_time'])
{
$sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . '
WHERE last_login < ' . (time() - (86400 * (int) $config['max_autologin_time']));
$db->sql_query($sql);
}
// only called from CRON; should be a safe workaround until the infrastructure gets going
/* @var $captcha_factory \phpbb\captcha\factory */
$captcha_factory = $phpbb_container->get('captcha.factory');
$captcha_factory->garbage_collect($config['captcha_plugin']);
$sql = 'DELETE FROM ' . LOGIN_ATTEMPT_TABLE . '
WHERE attempt_time < ' . (time() - (int) $config['ip_login_limit_time']);
$db->sql_query($sql);
}
return;
}
/**
* Sets a cookie
*
* Sets a cookie of the given name with the specified data for the given length of time. If no time is specified, a session cookie will be set.
*
* @param string $name Name of the cookie, will be automatically prefixed with the phpBB cookie name. track becomes [cookie_name]_track then.
* @param string $cookiedata The data to hold within the cookie
* @param int $cookietime The expiration time as UNIX timestamp. If 0 is provided, a session cookie is set.
* @param bool $httponly Use HttpOnly. Defaults to true. Use false to make cookie accessible by client-side scripts.
*/
function set_cookie($name, $cookiedata, $cookietime, $httponly = true)
{
global $config;
$name_data = rawurlencode($config['cookie_name'] . '_' . $name) . '=' . rawurlencode($cookiedata);
$expire = gmdate('D, d-M-Y H:i:s \\G\\M\\T', $cookietime);
$domain = (!$config['cookie_domain'] || $config['cookie_domain'] == '127.0.0.1' || strpos($config['cookie_domain'], '.') === false) ? '' : '; domain=' . $config['cookie_domain'];
header('Set-Cookie: ' . $name_data . (($cookietime) ? '; expires=' . $expire : '') . '; path=' . $config['cookie_path'] . $domain . ((!$config['cookie_secure']) ? '' : '; secure') . ';' . (($httponly) ? ' HttpOnly' : ''), false);
}
/**
* Check for banned user
*
* Checks whether the supplied user is banned by id, ip or email. If no parameters
* are passed to the method pre-existing session data is used.
*
* @param int|false $user_id The user id
* @param mixed $user_ips Can contain a string with one IP or an array of multiple IPs
* @param string|false $user_email The user email
* @param bool $return If $return is false this routine does not return on finding a banned user,
* it outputs a relevant message and stops execution.
*/
function check_ban($user_id = false, $user_ips = false, $user_email = false, $return = false)
{
global $config, $db, $phpbb_dispatcher;
if (defined('IN_CHECK_BAN') || defined('SKIP_CHECK_BAN'))
{
return;
}
$banned = false;
$cache_ttl = 3600;
$where_sql = array();
$sql = 'SELECT ban_ip, ban_userid, ban_email, ban_exclude, ban_give_reason, ban_end
FROM ' . BANLIST_TABLE . '
WHERE ';
// Determine which entries to check, only return those
if ($user_email === false)
{
$where_sql[] = "ban_email = ''";
}
if ($user_ips === false)
{
$where_sql[] = "(ban_ip = '' OR ban_exclude = 1)";
}
if ($user_id === false)
{
$where_sql[] = '(ban_userid = 0 OR ban_exclude = 1)';
}
else
{
$cache_ttl = ($user_id == ANONYMOUS) ? 3600 : 0;
$_sql = '(ban_userid = ' . $user_id;
if ($user_email !== false)
{
$_sql .= " OR ban_email <> ''";
}
if ($user_ips !== false)
{
$_sql .= " OR ban_ip <> ''";
}
$_sql .= ')';
$where_sql[] = $_sql;
}
$sql .= (sizeof($where_sql)) ? implode(' AND ', $where_sql) : '';
$result = $db->sql_query($sql, $cache_ttl);
$ban_triggered_by = 'user';
while ($row = $db->sql_fetchrow($result))
{
if ($row['ban_end'] && $row['ban_end'] < time())
{
continue;
}
$ip_banned = false;
if (!empty($row['ban_ip']))
{
if (!is_array($user_ips))
{
$ip_banned = preg_match('#^' . str_replace('\*', '.*?', preg_quote($row['ban_ip'], '#')) . '$#i', $user_ips);
}
else
{
foreach ($user_ips as $user_ip)
{
if (preg_match('#^' . str_replace('\*', '.*?', preg_quote($row['ban_ip'], '#')) . '$#i', $user_ip))
{
$ip_banned = true;
break;
}
}
}
}
if ((!empty($row['ban_userid']) && intval($row['ban_userid']) == $user_id) ||
$ip_banned ||
(!empty($row['ban_email']) && preg_match('#^' . str_replace('\*', '.*?', preg_quote($row['ban_email'], '#')) . '$#i', $user_email)))
{
if (!empty($row['ban_exclude']))
{
$banned = false;
break;
}
else
{
$banned = true;
$ban_row = $row;
if (!empty($row['ban_userid']) && intval($row['ban_userid']) == $user_id)
{
$ban_triggered_by = 'user';
}
else if ($ip_banned)
{
$ban_triggered_by = 'ip';
}
else
{
$ban_triggered_by = 'email';
}
// Don't break. Check if there is an exclude rule for this user
}
}
}
$db->sql_freeresult($result);
/**
* Event to set custom ban type
*
* @event core.session_set_custom_ban
* @var bool return If $return is false this routine does not return on finding a banned user, it outputs a relevant message and stops execution
* @var bool banned Check if user already banned
* @var array|false ban_row Ban data
* @var string ban_triggered_by Method that caused ban, can be your custom method
* @since 3.1.3-RC1
*/
$ban_row = isset($ban_row) ? $ban_row : false;
$vars = array('return', 'banned', 'ban_row', 'ban_triggered_by');
extract($phpbb_dispatcher->trigger_event('core.session_set_custom_ban', compact($vars)));
if ($banned && !$return)
{
global $template, $phpbb_root_path, $phpEx;
// If the session is empty we need to create a valid one...
if (empty($this->session_id))
{
// This seems to be no longer needed? - #14971
// $this->session_create(ANONYMOUS);
}
// Initiate environment ... since it won't be set at this stage
$this->setup();
// Logout the user, banned users are unable to use the normal 'logout' link
if ($this->data['user_id'] != ANONYMOUS)
{
$this->session_kill();
}
// We show a login box here to allow founders accessing the board if banned by IP
if (defined('IN_LOGIN') && $this->data['user_id'] == ANONYMOUS)
{
$this->setup('ucp');
$this->data['is_registered'] = $this->data['is_bot'] = false;
// Set as a precaution to allow login_box() handling this case correctly as well as this function not being executed again.
define('IN_CHECK_BAN', 1);
login_box("index.$phpEx");
// The false here is needed, else the user is able to circumvent the ban.
$this->session_kill(false);
}
// Ok, we catch the case of an empty session id for the anonymous user...
// This can happen if the user is logging in, banned by username and the login_box() being called "again".
if (empty($this->session_id) && defined('IN_CHECK_BAN'))
{
$this->session_create(ANONYMOUS);
}
// Determine which message to output
$till_date = ($ban_row['ban_end']) ? $this->format_date($ban_row['ban_end']) : '';
$message = ($ban_row['ban_end']) ? 'BOARD_BAN_TIME' : 'BOARD_BAN_PERM';
$contact_link = phpbb_get_board_contact_link($config, $phpbb_root_path, $phpEx);
$message = sprintf($this->lang[$message], $till_date, '<a href="' . $contact_link . '">', '</a>');
$message .= ($ban_row['ban_give_reason']) ? '<br /><br />' . sprintf($this->lang['BOARD_BAN_REASON'], $ban_row['ban_give_reason']) : '';
$message .= '<br /><br /><em>' . $this->lang['BAN_TRIGGERED_BY_' . strtoupper($ban_triggered_by)] . '</em>';
// To circumvent session_begin returning a valid value and the check_ban() not called on second page view, we kill the session again
$this->session_kill(false);
// A very special case... we are within the cron script which is not supposed to print out the ban message... show blank page
if (defined('IN_CRON'))
{
garbage_collection();
exit_handler();
exit;
}
trigger_error($message);
}
return ($banned && $ban_row['ban_give_reason']) ? $ban_row['ban_give_reason'] : $banned;
}
/**
* Check if ip is blacklisted
* This should be called only where absolutely necessary
*
* Only IPv4 (rbldns does not support AAAA records/IPv6 lookups)
*
* @author satmd (from the php manual)
* @param string $mode register/post - spamcop for example is ommitted for posting
* @param string|false $ip the IPv4 address to check
*
* @return false if ip is not blacklisted, else an array([checked server], [lookup])
*/
function check_dnsbl($mode, $ip = false)
{
if ($ip === false)
{
$ip = $this->ip;
}
// Neither Spamhaus nor Spamcop supports IPv6 addresses.
if (strpos($ip, ':') !== false)
{
return false;
}
$dnsbl_check = array(
'sbl.spamhaus.org' => 'http://www.spamhaus.org/query/bl?ip=',
);
if ($mode == 'register')
{
$dnsbl_check['bl.spamcop.net'] = 'http://spamcop.net/bl.shtml?';
}
if ($ip)
{
$quads = explode('.', $ip);
$reverse_ip = $quads[3] . '.' . $quads[2] . '.' . $quads[1] . '.' . $quads[0];
// Need to be listed on all servers...
$listed = true;
$info = array();
foreach ($dnsbl_check as $dnsbl => $lookup)
{
if (phpbb_checkdnsrr($reverse_ip . '.' . $dnsbl . '.', 'A') === true)
{
$info = array($dnsbl, $lookup . $ip);
}
else
{
$listed = false;
}
}
if ($listed)
{
return $info;
}
}
return false;
}
/**
* Check if URI is blacklisted
* This should be called only where absolutly necessary, for example on the submitted website field
* This function is not in use at the moment and is only included for testing purposes, it may not work at all!
* This means it is untested at the moment and therefore commented out
*
* @param string $uri URI to check
* @return true if uri is on blacklist, else false. Only blacklist is checked (~zero FP), no grey lists
function check_uribl($uri)
{
// Normally parse_url() is not intended to parse uris
// We need to get the top-level domain name anyway... change.
$uri = parse_url($uri);
if ($uri === false || empty($uri['host']))
{
return false;
}
$uri = trim($uri['host']);
if ($uri)
{
// One problem here... the return parameter for the "windows" method is different from what
// we expect... this may render this check useless...
if (phpbb_checkdnsrr($uri . '.multi.uribl.com.', 'A') === true)
{
return true;
}
}
return false;
}
*/
/**
* Set/Update a persistent login key
*
* This method creates or updates a persistent session key. When a user makes
* use of persistent (formerly auto-) logins a key is generated and stored in the
* DB. When they revisit with the same key it's automatically updated in both the
* DB and cookie. Multiple keys may exist for each user representing different
* browsers or locations. As with _any_ non-secure-socket no passphrase login this
* remains vulnerable to exploit.
*/
function set_login_key($user_id = false, $key = false, $user_ip = false)
{
global $config, $db;
$user_id = ($user_id === false) ? $this->data['user_id'] : $user_id;
$user_ip = ($user_ip === false) ? $this->ip : $user_ip;
$key = ($key === false) ? (($this->cookie_data['k']) ? $this->cookie_data['k'] : false) : $key;
$key_id = unique_id(hexdec(substr($this->session_id, 0, 8)));
$sql_ary = array(
'key_id' => (string) md5($key_id),
'last_ip' => (string) $this->ip,
'last_login' => (int) time()
);
if (!$key)
{
$sql_ary += array(
'user_id' => (int) $user_id
);
}
if ($key)
{
$sql = 'UPDATE ' . SESSIONS_KEYS_TABLE . '
SET ' . $db->sql_build_array('UPDATE', $sql_ary) . '
WHERE user_id = ' . (int) $user_id . "
AND key_id = '" . $db->sql_escape(md5($key)) . "'";
}
else
{
$sql = 'INSERT INTO ' . SESSIONS_KEYS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary);
}
$db->sql_query($sql);
$this->cookie_data['k'] = $key_id;
return false;
}
/**
* Reset all login keys for the specified user
*
* This method removes all current login keys for a specified (or the current)
* user. It will be called on password change to render old keys unusable
*/
function reset_login_keys($user_id = false)
{
global $config, $db;
$user_id = ($user_id === false) ? (int) $this->data['user_id'] : (int) $user_id;
$sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . '
WHERE user_id = ' . (int) $user_id;
$db->sql_query($sql);
// If the user is logged in, update last visit info first before deleting sessions
$sql = 'SELECT session_time, session_page
FROM ' . SESSIONS_TABLE . '
WHERE session_user_id = ' . (int) $user_id . '
ORDER BY session_time DESC';
$result = $db->sql_query_limit($sql, 1);
$row = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
if ($row)
{
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_lastvisit = ' . (int) $row['session_time'] . ", user_lastpage = '" . $db->sql_escape($row['session_page']) . "'
WHERE user_id = " . (int) $user_id;
$db->sql_query($sql);
}
// Let's also clear any current sessions for the specified user_id
// If it's the current user then we'll leave this session intact
$sql_where = 'session_user_id = ' . (int) $user_id;
$sql_where .= ($user_id === (int) $this->data['user_id']) ? " AND session_id <> '" . $db->sql_escape($this->session_id) . "'" : '';
$sql = 'DELETE FROM ' . SESSIONS_TABLE . "
WHERE $sql_where";
$db->sql_query($sql);
// We're changing the password of the current user and they have a key
// Lets regenerate it to be safe
if ($user_id === (int) $this->data['user_id'] && $this->cookie_data['k'])
{
$this->set_login_key($user_id);
}
}
/**
* Check if the request originated from the same page.
* @param bool $check_script_path If true, the path will be checked as well
*/
function validate_referer($check_script_path = false)
{
global $config, $request;
// no referer - nothing to validate, user's fault for turning it off (we only check on POST; so meta can't be the reason)
if (empty($this->referer) || empty($this->host))
{
return true;
}
$host = htmlspecialchars($this->host);
$ref = substr($this->referer, strpos($this->referer, '://') + 3);
if (!(stripos($ref, $host) === 0) && (!$config['force_server_vars'] || !(stripos($ref, $config['server_name']) === 0)))
{
return false;
}
else if ($check_script_path && rtrim($this->page['root_script_path'], '/') !== '')
{
$ref = substr($ref, strlen($host));
$server_port = $request->server('SERVER_PORT', 0);
if ($server_port !== 80 && $server_port !== 443 && stripos($ref, ":$server_port") === 0)
{
$ref = substr($ref, strlen(":$server_port"));
}
if (!(stripos(rtrim($ref, '/'), rtrim($this->page['root_script_path'], '/')) === 0))
{
return false;
}
}
return true;
}
function unset_admin()
{
global $db;
$sql = 'UPDATE ' . SESSIONS_TABLE . '
SET session_admin = 0
WHERE session_id = \'' . $db->sql_escape($this->session_id) . '\'';
$db->sql_query($sql);
}
/**
* Update the session data
*
* @param array $session_data associative array of session keys to be updated
* @param string $session_id optional session_id, defaults to current user's session_id
*/
public function update_session($session_data, $session_id = null)
{
global $db;
$session_id = ($session_id) ? $session_id : $this->session_id;
$sql = 'UPDATE ' . SESSIONS_TABLE . ' SET ' . $db->sql_build_array('UPDATE', $session_data) . "
WHERE session_id = '" . $db->sql_escape($session_id) . "'";
$db->sql_query($sql);
}
}
|
