-
-
Notifications
You must be signed in to change notification settings - Fork 307
/
alertracker.cc
1056 lines (804 loc) · 35.2 KB
/
alertracker.cc
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
/*
This file is part of Kismet
Kismet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Kismet is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Kismet; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <string>
#include <vector>
#include <sstream>
#include "alertracker.h"
#include "base64.h"
#include "configfile.h"
#include "devicetracker.h"
#include "json_adapter.h"
#include "kis_databaselogfile.h"
#include "trackedelement_workers.h"
alert_tracker::alert_tracker() : lifetime_global() {
alert_mutex.set_name("alertracker");
next_alert_id = 0;
packetchain = Globalreg::fetch_mandatory_global_as<packet_chain>();
entrytracker = Globalreg::fetch_mandatory_global_as<entry_tracker>();
eventbus = Globalreg::fetch_mandatory_global_as<event_bus>();
alert_vec_id =
entrytracker->register_field("kismet.alert.list",
tracker_element_factory<tracker_element_vector>(),
"list of alerts");
alert_timestamp_id =
entrytracker->register_field("kismet.alert.timestamp",
tracker_element_factory<tracker_element_double>(),
"alert update timestamp");
alert_entry_id =
entrytracker->register_field("kismet.alert.alert",
tracker_element_factory<tracked_alert>(),
"Kismet alert");
alert_defs_vec =
entrytracker->register_and_get_field_as<tracker_element_vector>("kismet.alert.definition_list",
tracker_element_factory<tracker_element_vector>(),
"Kismet alert definitions");
alert_backlog_vec =
entrytracker->register_and_get_field_as<tracker_element_vector>("kismet.alert.backlog",
tracker_element_factory<tracker_element_vector>(),
"Kismet alerts");
alert_def_id =
entrytracker->register_field("kismet.alert.alert_definition",
tracker_element_factory<tracked_alert_definition>(),
"Kismet alert definition");
// Register the alert component
pack_comp_alert =
packetchain->register_packet_component("alert");
// Register the GPS component
pack_comp_gps =
packetchain->register_packet_component("GPS");
// Register a KISMET alert type with no rate restrictions
alert_ref_kismet =
register_alert("KISMET",
"SYSTEM", kis_alert_severity::info,
"Server events",
sat_day, 0, sat_day, 0, KIS_PHY_ANY);
auto httpd = Globalreg::fetch_mandatory_global_as<kis_net_beast_httpd>();
httpd->register_route("/alerts/definitions/define_alert", {"POST"}, httpd->LOGON_ROLE, {"cmd"},
std::make_shared<kis_net_web_function_endpoint>(
[this](std::shared_ptr<kis_net_beast_httpd_connection> con) {
return define_alert_endpoint(con);
}));
httpd->register_route("/alerts/raise_alerts", {"POST"}, httpd->LOGON_ROLE, {"cmd"},
std::make_shared<kis_net_web_function_endpoint>(
[this](std::shared_ptr<kis_net_beast_httpd_connection> con) {
return raise_alert_endpoint(con);
}));
httpd->register_route("/alerts/definitions", {"GET", "POST"}, httpd->RO_ROLE, {},
std::make_shared<kis_net_web_tracked_endpoint>(alert_defs_vec, alert_mutex));
httpd->register_route("/alerts/all_alerts", {"GET", "POST"}, httpd->RO_ROLE, {},
std::make_shared<kis_net_web_tracked_endpoint>(alert_backlog_vec, alert_mutex));
httpd->register_route("/alerts/alerts_view", {"GET", "POST"}, httpd->RO_ROLE, {},
std::make_shared<kis_net_web_function_endpoint>(
[this](std::shared_ptr<kis_net_beast_httpd_connection> con) {
return alert_dt_endpoint(con);
}));
httpd->register_route("/alerts/by-id/:alertid/alert", {"GET", "POST"}, httpd->RO_ROLE, {},
std::make_shared<kis_net_web_tracked_endpoint>(
[this](std::shared_ptr<kis_net_beast_httpd_connection> con) -> std::shared_ptr<tracker_element> {
auto hash_k = con->uri_params().find(":alertid");
auto hash = string_to_n<uint32_t>(hash_k->second);
for (const auto& ai : *alert_backlog_vec) {
auto a = std::static_pointer_cast<tracked_alert>(ai);
if (a->get_hash() == hash)
return a;
}
con->set_status(404);
return std::make_shared<tracker_element_map>();
}, alert_mutex));
httpd->register_route("/alerts/last-time/:timestamp/alerts", {"GET", "POST"}, httpd->RO_ROLE, {},
std::make_shared<kis_net_web_tracked_endpoint>(
[this](std::shared_ptr<kis_net_beast_httpd_connection> con) -> std::shared_ptr<tracker_element> {
return last_alerts_endpoint(con, false);
}));
httpd->register_route("/alerts/wrapped/last-time/:timestamp/alerts", {"GET", "POST"}, httpd->RO_ROLE,
{}, std::make_shared<kis_net_web_tracked_endpoint>(
[this](std::shared_ptr<kis_net_beast_httpd_connection> con) -> std::shared_ptr<tracker_element> {
return last_alerts_endpoint(con, true);
}));
#ifdef PRELUDE
prelude_alerts = Globalreg::globalreg->kismet_config->fetch_opt_bool("prelude_alerts", true);
// Start client Prelude
if (prelude_alerts) {
int ret;
try {
ret = prelude_init(0, NULL);
if (ret < 0)
throw Prelude::PreludeError(ret);
} catch (Prelude::PreludeError const & error) {
_MSG_FATAL("Failed to initialize Prelude SIEM connection {}", error.what());
Globalreg::globalreg->fatal_condition = 1;
return;
}
prelude_init_client(PRELUDE_ANALYZER_NAME);
}
#endif
if (Globalreg::globalreg->kismet_config->fetch_opt("alertbacklog") != "") {
int scantmp;
if (sscanf(Globalreg::globalreg->kismet_config->fetch_opt("alertbacklog").c_str(),
"%d", &scantmp) != 1 || scantmp < 0) {
_MSG("Illegal value for 'alertbacklog' in kismet.conf, expected number greater than zero.",
MSGFLAG_FATAL);
Globalreg::globalreg->fatal_condition = 1;
return;
}
num_backlog = scantmp;
}
// Parse config file vector of all alerts
if (parse_alert_config(Globalreg::globalreg->kismet_config) < 0) {
_MSG("Failed to parse alert values from Kismet config file", MSGFLAG_FATAL);
Globalreg::globalreg->fatal_condition = 1;
return;
}
log_alerts = Globalreg::globalreg->kismet_config->fetch_opt_bool("kis_log_alerts", true);
}
alert_tracker::~alert_tracker() {
kis_lock_guard<kis_mutex> lk(alert_mutex, "~alertracker");
Globalreg::globalreg->remove_global("ALERTTRACKER");
Globalreg::globalreg->alertracker = NULL;
#ifdef PRELUDE
if (prelude_alerts) {
prelude_deinit();
delete prelude_client;
}
#endif
}
void alert_tracker::trigger_deferred_startup() {
gpstracker = Globalreg::fetch_mandatory_global_as<gps_tracker>();
}
void alert_tracker::prelude_init_client(const char *analyzer_name) {
#ifdef PRELUDE
try {
std::string version =
Globalreg::globalreg->version_major + "." +
Globalreg::globalreg->version_minor + "." +
Globalreg::globalreg->version_tiny;
prelude_client =
new Prelude::ClientEasy(analyzer_name, 4, PRELUDE_ANALYZER_MODEL,
PRELUDE_ANALYZER_CLASS, PRELUDE_ANALYZER_MANUFACTURER, version.c_str());
prelude_client->start();
} catch (Prelude::PreludeError const & error) {
_MSG_FATAL("alert_tracker failed to initialize connection to Prelude: {}", error.what());
Globalreg::globalreg->fatal_condition = 1;
return;
}
#endif
}
int alert_tracker::register_alert(std::string in_header, std::string in_class,
kis_alert_severity in_severity,
std::string in_description, alert_time_unit in_unit, int in_rate, alert_time_unit in_burstunit,
int in_burst, int in_phy) {
kis_lock_guard<kis_mutex> lk(alert_mutex, "alert_tracker register_alert");
// Bail if this header is registered
if (alert_name_map.find(in_header) != alert_name_map.end()) {
_MSG("Tried to re-register duplicate alert " + in_header, MSGFLAG_ERROR);
return -1;
}
// Make sure we're not going to overstep our range
if ((unsigned int) in_burstunit > sat_day)
in_burstunit = sat_day;
if ((unsigned int) in_unit > sat_day)
in_unit = sat_day;
// Bail if the rates are impossible
if (in_burstunit > in_unit) {
_MSG("Failed to register alert " + in_header + ", time unit for "
"burst rate must be less than or equal to the time unit "
"for the max rate", MSGFLAG_ERROR);
return -1;
}
auto arec =
std::make_shared<tracked_alert_definition>(alert_def_id);
arec->set_alert_ref(next_alert_id++);
arec->set_header(str_upper(in_header));
arec->set_alertclass(str_upper(in_class));
arec->set_severity(static_cast<unsigned int>(in_severity));
arec->set_description(in_description);
arec->set_limit_unit(in_unit);
arec->set_limit_rate(in_rate);
arec->set_burst_unit(in_burstunit);
arec->set_limit_burst(in_burst);
arec->set_phy(in_phy);
arec->set_time_last(0);
alert_name_map.insert(std::make_pair(arec->get_header(), arec->get_alert_ref()));
alert_ref_map.insert(std::make_pair(arec->get_alert_ref(), arec));
alert_defs_vec->push_back(arec);
return arec->get_alert_ref();
}
int alert_tracker::fetch_alert_ref(std::string in_header) {
kis_lock_guard<kis_mutex> lk(alert_mutex, "alert_tracker fetch_alert_ref");
auto ni = alert_name_map.find(in_header);
if (ni != alert_name_map.end())
return ni->second;
return -1;
}
int alert_tracker::check_times(shared_alert_def arec) {
// Alerts limited to 0 are squelched
if (arec->get_limit_rate() == 0) {
return 0;
}
struct timeval now;
gettimeofday(&now, NULL);
// If the last time we sent anything was longer than the main rate limit,
// then we reset back to empty
if (arec->get_time_last() < (now.tv_sec -
alert_time_unit_conv[arec->get_limit_unit()])) {
arec->set_total_sent(0);
arec->set_burst_sent(0);
return 1;
}
// If the last time we sent anything was longer than the burst rate, we can
// reset the burst to 0
if (arec->get_time_last() < (now.tv_sec -
alert_time_unit_conv[arec->get_burst_unit()])) {
arec->set_burst_sent(0);
}
// If we're under the limit on both, we're good to go
if (arec->get_burst_sent() < arec->get_limit_burst() &&
arec->get_total_sent() < arec->get_limit_rate())
return 1;
return 0;
}
int alert_tracker::potential_alert(int in_ref) {
kis_lock_guard<kis_mutex> lk(alert_mutex, "alert_tracker potential_alert");
std::map<int, shared_alert_def>::iterator aritr = alert_ref_map.find(in_ref);
if (aritr == alert_ref_map.end())
return 0;
shared_alert_def arec = aritr->second;
return check_times(arec);
}
int alert_tracker::raise_alert(int in_ref, std::shared_ptr<kis_packet> in_pack,
mac_addr bssid, mac_addr source, mac_addr dest,
mac_addr other, std::string in_channel, std::string in_text) {
kis_unique_lock<kis_mutex> lock(alert_mutex, std::defer_lock, "alert_tracker raise_alert");
lock.lock();
std::map<int, shared_alert_def>::iterator aritr = alert_ref_map.find(in_ref);
if (aritr == alert_ref_map.end())
return -1;
shared_alert_def arec = aritr->second;
if (in_pack != nullptr) {
in_pack->tag_map["ALERT"] = true;
in_pack->tag_map[fmt::format("ALERT_{}", arec->get_header())] = true;
}
if (check_times(arec) != 1)
return 0;
lock.unlock();
auto info = std::make_shared<kis_alert_info>();
info->header = arec->get_header();
info->alertclass = arec->get_alertclass();
info->severity = arec->get_severity();
info->phy = arec->get_phy();
gettimeofday(&(info->tm), NULL);
info->bssid = bssid;
info->source = source;
info->dest = dest;
info->other = other;
info->channel = in_channel;
info->text = in_text;
if (gpstracker != nullptr)
info->gps = gpstracker->get_best_location();
// Increment and set the timers
arec->inc_burst_sent(1);
arec->inc_total_sent(1);
arec->set_time_last(ts_to_double(info->tm));
lock.lock();
auto alert_t = std::make_shared<tracked_alert>(alert_entry_id, info);
alert_backlog_vec->push_back(alert_t);
if ((int) alert_backlog_vec->size() > num_backlog)
alert_backlog_vec->erase(alert_backlog_vec->begin());
// Publish an alert to the eventbus
auto event = eventbus->get_eventbus_event(alert_event());
event->get_event_content()->insert(alert_event(), alert_t);
eventbus->publish(event);
lock.unlock();
// Try to get the existing alert info
if (in_pack != NULL) {
auto acomp = in_pack->fetch<kis_alert_component>(pack_comp_alert);
// if we don't have an alert container, make one on this packet
if (acomp == nullptr) {
acomp = std::make_shared<kis_alert_component>();
in_pack->insert(pack_comp_alert, acomp);
}
// Attach it to the packet
acomp->alert_vec.push_back(info);
// Also get GPS
auto pack_gpsinfo = in_pack->fetch<kis_gps_packinfo>(pack_comp_gps);
info->gps = pack_gpsinfo;
}
#ifdef PRELUDE
// Send alert to Prelude
if (prelude_alerts)
raise_prelude_alert(in_ref, in_pack, info->bssid, info->source,
info->dest, info->other, info->channel, info->text);
#endif
// Send the text info
_MSG(info->header + " " + info->text, MSGFLAG_ALERT);
return 1;
}
int alert_tracker::raise_one_shot(std::string in_header, std::string in_class,
kis_alert_severity in_severity, std::string in_text, int in_phy) {
kis_unique_lock<kis_mutex> lock(alert_mutex, std::defer_lock, "alert_tracker raise_one_shot");
kis_alert_info info;
info.header = in_header;
info.alertclass = in_class;
info.severity = static_cast<unsigned int>(in_severity);
info.phy = in_phy;
gettimeofday(&(info.tm), NULL);
info.bssid = mac_addr(0);
info.source = mac_addr(0);
info.dest = mac_addr(0);
info.other = mac_addr(0);
info.channel = "";
info.text = in_text;
lock.lock();
auto alert_t = std::make_shared<tracked_alert>(alert_entry_id, &info);
alert_backlog_vec->push_back(alert_t);
if ((int) alert_backlog_vec->size() > num_backlog)
alert_backlog_vec->erase(alert_backlog_vec->begin());
// Publish an alert to the eventbus
auto event = eventbus->get_eventbus_event(alert_event());
event->get_event_content()->insert(alert_event(), alert_t);
eventbus->publish(event);
lock.unlock();
#ifdef PRELUDE
// Send alert to Prelude
if (prelude_alerts)
raise_prelude_one_shot(in_header, in_text);
#endif
// Send the text info
_MSG(info.header + " " + info.text, MSGFLAG_ALERT);
return 1;
}
int alert_tracker::raise_prelude_alert(int in_ref, std::shared_ptr<kis_packet> in_pack,
mac_addr bssid, mac_addr source, mac_addr dest,
mac_addr other, std::string in_channel, std::string in_text) {
#ifdef PRELUDE
try {
mac_addr emptymac = mac_addr(0);
Prelude::IDMEF idmef;
// Classification
idmef.set("alert.classification.text", "Suspicious Kismet event detected");
// Source
if (source != emptymac) {
idmef.set("alert.source(0).node.address(0).category", "mac");
idmef.set("alert.source(0).node.address(0).address", source.mac_to_string().c_str());
}
// Target
if (dest != emptymac) {
idmef.set("alert.target(0).node.address(0).category", "mac");
idmef.set("alert.target(0).node.address(0).address", dest.mac_to_string().c_str());
}
// Assessment
idmef.set("alert.assessment.impact.severity", "high");
idmef.set("alert.assessment.impact.completion", "succeeded");
idmef.set("alert.assessment.impact.description", in_text);
// Additional Data
if (bssid != emptymac) {
idmef.set("alert.additional_data(>>).meaning", "BSSID");
idmef.set("alert.additional_data(-1).data", bssid.mac_to_string().c_str());
}
if (other != emptymac) {
idmef.set("alert.additional_data(>>).meaning", "Other");
idmef.set("alert.additional_data(-1).data", other.mac_to_string().c_str());
}
idmef.set("alert.additional_data(>>).meaning", "Channel");
idmef.set("alert.additional_data(-1).data", in_channel);
idmef.set("alert.additional_data(>>).meaning", "in_ref");
idmef.set("alert.additional_data(-1).data", in_ref);
prelude_client->sendIDMEF(idmef);
} catch (const Prelude::PreludeError& e) {
_MSG_ERROR("Could not send alert to Prelude: {}", e.what());
}
#endif
return 0;
}
int alert_tracker::raise_prelude_one_shot(std::string in_header, std::string in_text) {
#ifdef PRELUDE
try {
mac_addr emptymac = mac_addr(0);
Prelude::IDMEF idmef;
// Classification
idmef.set("alert.classification.text", "Suspicious network detected");
// Assessment
idmef.set("alert.assessment.impact.severity", "high");
idmef.set("alert.assessment.impact.completion", "succeeded");
idmef.set("alert.assessment.impact.description", in_text);
idmef.set("alert.additional_data(>>).alert_type", "in_ref");
idmef.set("alert.additional_data(-1).data", in_header);
prelude_client->sendIDMEF(idmef);
} catch (const Prelude::PreludeError& e) {
_MSG_ERROR("Could not send alert to Prelude: {}", e.what());
}
#endif
return 0;
}
int alert_tracker::parse_alert_str(std::string alert_str, std::string *ret_name,
alert_time_unit *ret_limit_unit, int *ret_limit_rate,
alert_time_unit *ret_limit_burst,
int *ret_burst_rate) {
std::vector<std::string> tokens = str_tokenize(alert_str, ",");
if (tokens.size() != 3) {
_MSG_ERROR("Malformed limits for alert '{}'", alert_str);
return -1;
}
(*ret_name) = str_upper(tokens[0]);
if (parse_rate_unit(str_lower(tokens[1]), ret_limit_unit, ret_limit_rate) != 1 ||
parse_rate_unit(str_lower(tokens[2]), ret_limit_burst, ret_burst_rate) != 1) {
_MSG_ERROR("Malformed limits for alert '{}'", alert_str);
return -1;
}
return 1;
}
// Split up a rate/unit string into real values
int alert_tracker::parse_rate_unit(std::string in_ru, alert_time_unit *ret_unit,
int *ret_rate) {
std::vector<std::string> units = str_tokenize(in_ru, "/");
if (units.size() == 1) {
// Unit is per minute if not specified
(*ret_unit) = sat_minute;
} else {
// Parse the string unit
if (units[1] == "sec" || units[1] == "second") {
(*ret_unit) = sat_second;
} else if (units[1] == "min" || units[1] == "minute") {
(*ret_unit) = sat_minute;
} else if (units[1] == "hr" || units[1] == "hour") {
(*ret_unit) = sat_hour;
} else if (units[1] == "day") {
(*ret_unit) = sat_day;
} else {
_MSG("Invalid time unit for alert rate '" + units[1] + "'",
MSGFLAG_ERROR);
return -1;
}
}
// Get the number
if (sscanf(units[0].c_str(), "%d", ret_rate) != 1) {
_MSG("Invalid rate '" + units[0] + "' for alert", MSGFLAG_ERROR);
return -1;
}
return 1;
}
int alert_tracker::parse_alert_config(config_file *in_conf) {
std::vector<std::string> clines = in_conf->fetch_opt_vec("alert");
for (unsigned int x = 0; x < clines.size(); x++) {
alert_conf_rec *rec = new alert_conf_rec;
if (parse_alert_str(clines[x], &(rec->header), &(rec->limit_unit),
&(rec->limit_rate), &(rec->burst_unit),
&(rec->limit_burst)) < 0) {
_MSG_FATAL("Invalid 'alert' config option {}; expected HEADER,rate,burstrate", clines[x]);
Globalreg::globalreg->fatal_condition = 1;
delete rec;
return -1;
}
alert_conf_map.insert(std::make_pair(rec->header, rec));
}
return 1;
}
int alert_tracker::define_alert(std::string name, alert_time_unit limit_unit, int limit_rate,
alert_time_unit burst_unit, int burst_rate) {
kis_lock_guard<kis_mutex> lk(alert_mutex, "alert_tracker define_alert");
auto ai = alert_conf_map.find(str_upper(name));
if (ai != alert_conf_map.end()) {
_MSG_ERROR("alerttracker - tried to define alert '{}' twice.", name);
return -1;
}
alert_conf_rec *rec = new alert_conf_rec;
rec->header = str_upper(name);
rec->limit_unit = limit_unit;
rec->limit_rate = limit_rate;
rec->burst_unit = burst_unit;
rec->limit_burst = burst_rate;
alert_conf_map.insert(std::make_pair(rec->header, rec));
return 1;
}
int alert_tracker::activate_configured_alert(std::string in_header,
std::string in_class, kis_alert_severity in_severity, std::string in_desc) {
return activate_configured_alert(in_header, in_class, in_severity, in_desc, KIS_PHY_UNKNOWN);
}
int alert_tracker::activate_configured_alert(std::string in_header, std::string in_class,
kis_alert_severity in_severity, std::string in_desc, int in_phy) {
alert_conf_rec *rec;
{
kis_lock_guard<kis_mutex> lk(alert_mutex, "alert_tracker activate_configured_alert");
std::string hdr = str_upper(in_header);
auto hi = alert_conf_map.find(hdr);
if (hi == alert_conf_map.end()) {
_MSG_INFO("Using default rates of 10/min, 1/sec for alert '{}'", in_header);
define_alert(in_header, sat_minute, 10, sat_second, 1);
auto hi_full = alert_conf_map.find(hdr);
if (hi_full == alert_conf_map.end()) {
_MSG_ERROR("Failed to define default rate alert '{}'", in_header);
return -1;
}
rec = hi_full->second;
} else {
rec = hi->second;
}
}
return register_alert(rec->header, in_class, in_severity, in_desc,
rec->limit_unit, rec->limit_rate,
rec->burst_unit, rec->limit_burst, in_phy);
}
int alert_tracker::find_activated_alert(std::string in_header) {
kis_lock_guard<kis_mutex> lk(alert_mutex, "alert_tracker find_activated_alert");
for (auto x : alert_ref_map) {
if (x.second->get_header() == in_header)
return x.first;
}
return -1;
}
std::shared_ptr<tracker_element>
alert_tracker::last_alerts_endpoint(std::shared_ptr<kis_net_beast_httpd_connection> con, bool wrap) {
std::shared_ptr<tracker_element> transmit;
std::shared_ptr<tracker_element_map> wrapper;
std::shared_ptr<tracker_element_vector> msgvec = std::make_shared<tracker_element_vector>(alert_vec_id);
double since_time = 0;
std::ostream os(&con->response_stream());
auto ts_k = con->uri_params().find(":timestamp");
try {
since_time = string_to_n<double>(ts_k->second);
} catch (const std::exception& e) {
con->set_status(400);
return transmit;
}
if (wrap) {
wrapper = std::make_shared<tracker_element_map>();
wrapper->insert(msgvec);
auto ts = std::make_shared<tracker_element_double>(alert_timestamp_id, ts_now_to_double());
wrapper->insert(ts);
transmit = wrapper;
} else {
transmit = msgvec;
}
{
kis_lock_guard<kis_mutex> lk(alert_mutex, "alert_tracker last_alerts_endpoint");
for (auto i : *alert_backlog_vec) {
auto ai = std::static_pointer_cast<tracked_alert>(i);
if (since_time < ai->get_timestamp()) {
msgvec->push_back(ai);
}
}
}
return transmit;
}
void alert_tracker::define_alert_endpoint(std::shared_ptr<kis_net_beast_httpd_connection> con) {
try {
std::string name = con->json()["name"];
std::string description = con->json()["description"];
std::string alertclass = con->json()["class"];
auto severity = int_to_alert_severity(con->json()["severity"]);
alert_time_unit limit_unit;
int limit_rate;
alert_time_unit burst_unit;
int burst_rate;
if (parse_rate_unit(str_lower(con->json().value("throttle", "")),
&limit_unit, &limit_rate) < 0) {
throw std::runtime_error("could not parse throttle limits");
}
if (parse_rate_unit(str_lower(con->json().value("burst", "")),
&burst_unit, &burst_rate) < 0) {
throw std::runtime_error("could not parse burst limits");
}
int phyid = KIS_PHY_ANY;
auto phyname = con->json().value("phyname", "");
if (phyname != "any" && phyname != "") {
auto devicetracker =
Globalreg::fetch_mandatory_global_as<device_tracker>();
kis_phy_handler *phyh = devicetracker->fetch_phy_handler_by_name(phyname);
if (phyh == NULL)
throw std::runtime_error("could not find phy");
phyid = phyh->fetch_phy_id();
}
if (define_alert(name, limit_unit, limit_rate, burst_unit, burst_rate) < 0) {
con->set_status(503);
std::ostream os(&con->response_stream());
os << "Could not define alert\n";
return;
}
if (activate_configured_alert(name, alertclass, severity, description, phyid) < 0) {
con->set_status(504);
std::ostream os(&con->response_stream());
os << "Could not activate alert after definition\n";
return;
}
} catch (const std::exception& e) {
con->set_status(400);
std::ostream os(&con->response_stream());
os << "Invalid request: " << e.what() << "\n";
return;
}
}
void alert_tracker::raise_alert_endpoint(std::shared_ptr<kis_net_beast_httpd_connection> con) {
std::ostream os(&con->response_stream());
try {
std::string name = con->json()["name"];
std::string text = con->json()["text"];
auto aref = fetch_alert_ref(name);
if (aref < 0) {
con->set_status(400);
os << "Invalid request: Unknown alert type '" << con->escape_html(name) << "'\n";
return;
}
std::string bssid = con->json().value("bssid", "");
std::string source = con->json().value("source", "");
std::string dest = con->json().value("dest", "");
std::string other = con->json().value("other", "");
std::string channel = con->json().value("channel", "");
mac_addr bssid_mac, source_mac, dest_mac, other_mac;
if (bssid.length() != 0)
bssid_mac = mac_addr(bssid);
if (source.length() != 0)
source_mac = mac_addr(source);
if (dest.length() != 0)
dest_mac = mac_addr(dest);
if (other.length() != 0)
other_mac = mac_addr(other);
if (bssid_mac.state.error || source_mac.state.error ||
dest_mac.state.error || other_mac.state.error)
throw std::runtime_error("invalid MAC address");
if (!potential_alert(aref))
throw std::runtime_error("alert throttle reached, alert not raised.");
raise_alert(aref, nullptr, bssid_mac, source_mac, dest_mac, other_mac,
channel, text);
} catch (const std::exception& e) {
con->set_status(400);
os << "Invalid request: " << e.what() << "\n";
return;
};
os << "Alert raised\n";
}
void alert_tracker::alert_dt_endpoint(std::shared_ptr<kis_net_beast_httpd_connection> con) {
std::ostream os(&con->response_stream());
auto summary_vec = std::vector<SharedElementSummary>{};
auto rename_map = Globalreg::new_from_pool<tracker_element_serializer::rename_map>();
auto search_term = std::string{};
auto search_paths = std::vector<std::vector<int>>{};
auto order_field = std::vector<int>{};
std::shared_ptr<tracker_element_string_map> wrapper_elem;
std::shared_ptr<tracker_element> transmit;
auto length_elem = std::make_shared<tracker_element_uint64>();
auto start_elem = std::make_shared<tracker_element_uint64>();
auto total_sz_elem = std::make_shared<tracker_element_uint64>();
auto filtered_sz_elem = std::make_shared<tracker_element_uint64>();
auto max_page_elem = std::make_shared<tracker_element_uint64>();
auto output_alerts_elem = std::make_shared<tracker_element_vector>();
auto dt_draw_elem = std::make_shared<tracker_element_uint64>();
try {
auto fields = con->json().value("fields", nlohmann::json::array_t{});
for (const auto& i : fields) {
if (i.is_string()) {
summary_vec.push_back(std::make_shared<tracker_element_summary>(i.get<std::string>()));
} else if (i.is_array()) {
if (i.size() != 2)
throw std::runtime_error("Invalid field map, expected [field, rename]");
summary_vec.push_back(std::make_shared<tracker_element_summary>(i[0].get<std::string>(),
i[1].get<std::string>()));
}
}
} catch (const std::exception& e) {
con->set_status(400);
fmt::print(os, "Invalid request: {}\n", e.what());
return;
}
unsigned int in_window_start = 0;
unsigned int in_window_len = 0;
unsigned int in_dt_draw = 0;
std::string in_order_column_num;
unsigned int in_order_direction = 0;
// Parse DT data
try {
auto column_number_map = con->json()["colmap"];
// Generic pagination
auto start_k = con->http_variables().find("page");
if (start_k != con->http_variables().end()) {
in_window_start = string_to_n<unsigned int>(start_k->second);
auto length_k = con->http_variables().find("length");
if (length_k != con->http_variables().end()) {
in_window_len = string_to_n<unsigned int>(length_k->second);
in_window_start *= in_window_len;
} else {
length_k = con->http_variables().find("size");
if (length_k != con->http_variables().end())
in_window_len = string_to_n<unsigned int>(length_k->second);
in_window_start *= in_window_len;
}
// Set the window elements for datatables
start_elem->set(in_window_start);
dt_draw_elem->set(in_dt_draw);
auto sort_k = con->http_variables().find("sort");
if (sort_k != con->http_variables().end()) {
order_field = tracker_element_summary(sort_k->second).resolved_path;
auto dir_k = con->http_variables().find("sort_dir");
if (dir_k != con->http_variables().end() && dir_k->second == "asc")
in_order_direction = 1;
else
in_order_direction = 0;
}
auto search_k = con->http_variables().find("search");
if (search_k != con->http_variables().end())
search_term = search_k->second;
// Search every field we return
if (search_term.length() != 0)
for (const auto& svi : summary_vec)
search_paths.push_back(svi->resolved_path);
// Set up the datatables wrapper
wrapper_elem = std::make_shared<tracker_element_string_map>();
transmit = wrapper_elem;
wrapper_elem->insert("data", output_alerts_elem);
wrapper_elem->insert("last_page", max_page_elem);
wrapper_elem->insert("last_row", filtered_sz_elem);
wrapper_elem->insert("total_row", total_sz_elem);
}
} catch (const std::exception& e) {
con->set_status(400);
fmt::print(os, "Invalid request (pagination): {}\n", e.what());
return;
}
// vector we do work on
auto next_work_vec = std::make_shared<tracker_element_vector>();
// Copy the alerts under lock; in the future this should populate them from the
// databaselog too perhaps
{
kis_lock_guard<kis_mutex> lk(alert_mutex, "alertracker dt view copy");
next_work_vec->set(alert_backlog_vec->begin(), alert_backlog_vec->end());
total_sz_elem->set(next_work_vec->size());
}
if (search_term.length() > 0 && search_paths.size() > 0) {
auto worker = tracker_element_icasestringmatch_worker(search_term, search_paths);
next_work_vec = worker.do_work(next_work_vec);
}
filtered_sz_elem->set(next_work_vec->size());
if (in_window_len > 0) {
max_page_elem->set(ceil(((float) next_work_vec->size()) / in_window_len));