forked from Ylianst/MeshCentral
-
Notifications
You must be signed in to change notification settings - Fork 0
/
meshagent.js
1895 lines (1692 loc) · 120 KB
/
meshagent.js
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
/**
* @description MeshCentral MeshAgent communication module
* @author Ylian Saint-Hilaire & Bryan Roe
* @copyright Intel Corporation 2018-2021
* @license Apache-2.0
* @version v0.0.1
*/
/*xjslint node: true */
/*xjslint plusplus: true */
/*xjslint maxlen: 256 */
/*jshint node: true */
/*jshint strict: false */
/*jshint esversion: 6 */
"use strict";
// Construct a MeshAgent object, called upon connection
module.exports.CreateMeshAgent = function (parent, db, ws, req, args, domain) {
const forge = parent.parent.certificateOperations.forge;
const common = parent.parent.common;
parent.agentStats.createMeshAgentCount++;
parent.parent.debug('agent', 'New agent at ' + req.clientIp + ':' + ws._socket.remotePort);
var obj = {};
obj.domain = domain;
obj.authenticated = 0;
obj.receivedCommands = 0;
obj.agentCoreCheck = 0;
obj.remoteaddr = req.clientIp;
obj.remoteaddrport = obj.remoteaddr + ':' + ws._socket.remotePort;
obj.nonce = parent.crypto.randomBytes(48).toString('binary');
//ws._socket.setKeepAlive(true, 240000); // Set TCP keep alive, 4 minutes
if (args.agentidletimeout != 0) { ws._socket.setTimeout(args.agentidletimeout, function () { obj.close(1); }); } // Inactivity timeout of 2:30 minutes, by default agent will WebSocket ping every 2 minutes and server will pong back.
//obj.nodeid = null;
//obj.meshid = null;
//obj.dbNodeKey = null;
//obj.dbMeshKey = null;
//obj.connectTime = null;
//obj.agentInfo = null;
// Send a message to the mesh agent
obj.send = function (data, func) { try { if (typeof data == 'string') { ws.send(Buffer.from(data), func); } else { ws.send(data, func); } } catch (e) { } };
obj.sendBinary = function (data, func) { try { if (typeof data == 'string') { ws.send(Buffer.from(data, 'binary'), func); } else { ws.send(data, func); } } catch (e) { } };
// Disconnect this agent
obj.close = function (arg) {
if ((arg == 1) || (arg == null)) { try { ws.close(); if (obj.nodeid != null) { parent.parent.debug('agent', 'Soft disconnect ' + obj.nodeid + ' (' + obj.remoteaddrport + ')'); } } catch (e) { console.log(e); } } // Soft close, close the websocket
if (arg == 2) { try { ws._socket._parent.end(); if (obj.nodeid != null) { parent.parent.debug('agent', 'Hard disconnect ' + obj.nodeid + ' (' + obj.remoteaddrport + ')'); } } catch (e) { console.log(e); } } // Hard close, close the TCP socket
// If arg == 3, don't communicate with this agent anymore, but don't disconnect (Duplicate agent).
// Remove this agent from the webserver list
if (parent.wsagents[obj.dbNodeKey] == obj) {
delete parent.wsagents[obj.dbNodeKey];
parent.parent.ClearConnectivityState(obj.dbMeshKey, obj.dbNodeKey, 1);
}
// Remove this agent from the list of agents with bad web certificates
if (obj.badWebCert) { delete parent.wsagentsWithBadWebCerts[obj.badWebCert]; }
// Get the current mesh
const mesh = parent.meshes[obj.dbMeshKey];
// If this is a temporary or recovery agent, or all devices in this group are temporary, remove the agent (0x20 = Temporary, 0x40 = Recovery)
if (((obj.agentInfo) && (obj.agentInfo.capabilities) && ((obj.agentInfo.capabilities & 0x20) || (obj.agentInfo.capabilities & 0x40))) || ((mesh) && (mesh.flags) && (mesh.flags & 1))) {
// Delete this node including network interface information and events
db.Remove(obj.dbNodeKey); // Remove node with that id
db.Remove('if' + obj.dbNodeKey); // Remove interface information
db.Remove('nt' + obj.dbNodeKey); // Remove notes
db.Remove('lc' + obj.dbNodeKey); // Remove last connect time
db.Remove('si' + obj.dbNodeKey); // Remove system information
db.Remove('al' + obj.dbNodeKey); // Remove error log last time
if (db.RemoveSMBIOS) { db.RemoveSMBIOS(obj.dbNodeKey); } // Remove SMBios data
db.RemoveAllNodeEvents(obj.dbNodeKey); // Remove all events for this node
db.removeAllPowerEventsForNode(obj.dbNodeKey); // Remove all power events for this node
// Event node deletion
parent.parent.DispatchEvent(parent.CreateMeshDispatchTargets(obj.dbMeshKey, [obj.dbNodeKey]), obj, { etype: 'node', action: 'removenode', nodeid: obj.dbNodeKey, domain: domain.id, nolog: 1 });
// Disconnect all connections if needed
const state = parent.parent.GetConnectivityState(obj.dbNodeKey);
if ((state != null) && (state.connectivity != null)) {
if ((state.connectivity & 1) != 0) { parent.wsagents[obj.dbNodeKey].close(); } // Disconnect mesh agent
if ((state.connectivity & 2) != 0) { parent.parent.mpsserver.closeAllForNode(obj.dbNodeKey); } // Disconnect CIRA connection
}
} else {
// Update the last connect time
if (obj.authenticated == 2) { db.Set({ _id: 'lc' + obj.dbNodeKey, type: 'lastconnect', domain: domain.id, time: Date.now(), addr: obj.remoteaddrport, cause: 1 }); }
}
// Set this agent as no longer authenticated
obj.authenticated = -1;
// If we where updating the agent using native method, clean that up.
if (obj.agentUpdate != null) {
if (obj.agentUpdate.fd) { try { parent.fs.close(obj.agentUpdate.fd); } catch (ex) { } }
parent.parent.taskLimiter.completed(obj.agentUpdate.taskid); // Indicate this task complete
delete obj.agentUpdate.buf;
delete obj.agentUpdate;
}
// If we where updating the agent meshcore method, clean that up.
if (obj.agentCoreUpdateTaskId != null) {
parent.parent.taskLimiter.completed(obj.agentCoreUpdateTaskId);
delete obj.agentCoreUpdateTaskId;
}
// Perform timer cleanup
if (obj.pingtimer) { clearInterval(obj.pingtimer); delete obj.pingtimer; }
if (obj.pongtimer) { clearInterval(obj.pongtimer); delete obj.pongtimer; }
// Perform aggressive cleanup
if (obj.nonce) { delete obj.nonce; }
if (obj.nodeid) { delete obj.nodeid; }
if (obj.unauth) { delete obj.unauth; }
if (obj.remoteaddr) { delete obj.remoteaddr; }
if (obj.remoteaddrport) { delete obj.remoteaddrport; }
if (obj.meshid) { delete obj.meshid; }
if (obj.dbNodeKey) { delete obj.dbNodeKey; }
if (obj.dbMeshKey) { delete obj.dbMeshKey; }
if (obj.connectTime) { delete obj.connectTime; }
if (obj.agentInfo) { delete obj.agentInfo; }
if (obj.agentExeInfo) { delete obj.agentExeInfo; }
ws.removeAllListeners(['message', 'close', 'error']);
};
// When data is received from the mesh agent web socket
ws.on('message', function (msg) {
if (msg.length < 2) return;
if (typeof msg == 'object') { msg = msg.toString('binary'); } // TODO: Could change this entire method to use Buffer instead of binary string
if (obj.authenticated == 2) { // We are authenticated
if ((obj.agentUpdate == null) && (msg.charCodeAt(0) == 123)) { processAgentData(msg); } // Only process JSON messages if meshagent update is not in progress
if (msg.length < 2) return;
const cmdid = common.ReadShort(msg, 0);
if (cmdid == 11) { // MeshCommand_CoreModuleHash
if (msg.length == 4) { ChangeAgentCoreInfo({ 'caps': 0 }); } // If the agent indicated that no core is running, clear the core information string.
// Mesh core hash, sent by agent with the hash of the current mesh core.
// If we are performing an agent update, don't update the core.
if (obj.agentUpdate != null) { return; }
// If we are using a custom core, don't try to update it.
if (obj.agentCoreCheck == 1000) {
obj.sendBinary(common.ShortToStr(16) + common.ShortToStr(0)); // MeshCommand_CoreOk. Indicates to the agent that the core is ok. Start it if it's not already started.
agentCoreIsStable();
return;
}
// Get the current meshcore hash
const agentMeshCoreHash = (msg.length == 52) ? msg.substring(4, 52) : null;
// If the agent indicates this is a custom core, we are done.
if ((agentMeshCoreHash != null) && (agentMeshCoreHash == '\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0')) {
obj.agentCoreCheck = 0;
obj.sendBinary(common.ShortToStr(16) + common.ShortToStr(0)); // MeshCommand_CoreOk. Indicates to the agent that the core is ok. Start it if it's not already started.
agentCoreIsStable();
return;
}
// We need to check if the core is current. Figure out what core we need.
var corename = null;
if ((obj.agentInfo != null) && (parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId] != null)) {
if ((obj.agentCoreCheck == 1001) || (obj.agentCoreUpdate == true)) {
// If the user asked, use the recovery core.
corename = parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].rcore;
} else if (obj.agentCoreCheck == 1011) {
// If the user asked, use the tiny core.
corename = parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].tcore;
} else if (obj.agentInfo.capabilities & 0x40) {
// If this is a recovery agent, use the agent recovery core.
corename = parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].arcore;
} else {
// This is the normal core for this agent type.
corename = parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].core;
}
}
// If we have a core, use it.
if (corename != null) {
const meshcorehash = parent.parent.defaultMeshCoresHash[corename];
if (agentMeshCoreHash != meshcorehash) {
if ((obj.agentCoreCheck < 5) || (obj.agentCoreCheck == 1001) || (obj.agentCoreCheck == 1011) || (obj.agentCoreUpdate == true)) {
if (meshcorehash == null) {
// Clear the core
obj.sendBinary(common.ShortToStr(10) + common.ShortToStr(0)); // MeshCommand_CoreModule, ask mesh agent to clear the core
parent.agentStats.clearingCoreCount++;
parent.parent.debug('agent', "Clearing core");
} else {
// Setup task limiter options, this system limits how many tasks can run at the same time to spread the server load.
var taskLimiterOptions = { hash: meshcorehash, core: parent.parent.defaultMeshCores[corename], name: corename };
// If the agent supports compression, sent the core compressed.
if ((obj.agentInfo.capabilities & 0x100) && (parent.parent.defaultMeshCoresDeflate[corename])) {
args.core = parent.parent.defaultMeshCoresDeflate[corename];
}
// Update new core with task limiting so not to flood the server. This is a high priority task.
obj.agentCoreUpdatePending = true;
parent.parent.taskLimiter.launch(function (argument, taskid, taskLimiterQueue) {
if (obj.authenticated == 2) {
// Send the updated core.
delete obj.agentCoreUpdatePending;
obj.sendBinary(common.ShortToStr(10) + common.ShortToStr(0) + argument.hash + argument.core, function () { parent.parent.taskLimiter.completed(taskid); }); // MeshCommand_CoreModule, start core update
parent.agentStats.updatingCoreCount++;
parent.parent.debug('agent', "Updating core " + argument.name);
} else {
// This agent is probably disconnected, nothing to do.
parent.parent.taskLimiter.completed(taskid);
}
}, taskLimiterOptions, 0);
}
obj.agentCoreCheck++;
}
} else {
obj.agentCoreCheck = 0;
obj.sendBinary(common.ShortToStr(16) + common.ShortToStr(0)); // MeshCommand_CoreOk. Indicates to the agent that the core is ok. Start it if it's not already started.
agentCoreIsStable(); // No updates needed, agent is ready to go.
}
}
/*
// TODO: Check if we have a mesh specific core. If so, use that.
var agentMeshCoreHash = null;
if (msg.length == 52) { agentMeshCoreHash = msg.substring(4, 52); }
if ((agentMeshCoreHash != parent.parent.defaultMeshCoreHash) && (agentMeshCoreHash != parent.parent.defaultMeshCoreNoMeiHash)) {
if (obj.agentCoreCheck < 5) { // This check is in place to avoid a looping core update.
if (parent.parent.defaultMeshCoreHash == null) {
// Update no core
obj.sendBinary(common.ShortToStr(10) + common.ShortToStr(0)); // Command 10, ask mesh agent to clear the core
} else {
// Update new core
if ((parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId] != null) && (parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].amt == true)) {
obj.sendBinary(common.ShortToStr(10) + common.ShortToStr(0) + parent.parent.defaultMeshCoreHash + parent.parent.defaultMeshCore); // Command 10, ask mesh agent to set the core (with MEI support)
} else {
obj.sendBinary(common.ShortToStr(10) + common.ShortToStr(0) + parent.parent.defaultMeshCoreNoMeiHash + parent.parent.defaultMeshCoreNoMei); // Command 10, ask mesh agent to set the core (No MEI)
}
}
obj.agentCoreCheck++;
}
} else {
obj.agentCoreCheck = 0;
}
*/
}
else if (cmdid == 12) { // MeshCommand_AgentHash
if ((msg.length == 52) && (obj.agentExeInfo != null) && (obj.agentExeInfo.update == true)) {
const agenthash = msg.substring(4);
const agentUpdateMethod = compareAgentBinaryHash(obj.agentExeInfo, agenthash)
if (agentUpdateMethod === 2) { // Use meshcore agent update system
// Send the recovery core to the agent, if the agent is capable of running one
if (((obj.agentInfo.capabilities & 16) != 0) && (parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].core != null)) {
parent.agentStats.agentMeshCoreBinaryUpdate++;
obj.agentCoreUpdate = true;
obj.sendBinary(common.ShortToStr(10) + common.ShortToStr(0)); // Ask to clear the core
obj.sendBinary(common.ShortToStr(11) + common.ShortToStr(0)); // Ask for meshcore hash
}
} else if (agentUpdateMethod === 1) { // Use native agent update system
// Mesh agent update required, do it using task limiter so not to flood the network. Medium priority task.
parent.parent.taskLimiter.launch(function (argument, taskid, taskLimiterQueue) {
if (obj.authenticated != 2) { parent.parent.taskLimiter.completed(taskid); return; } // If agent disconnection, complete and exit now.
if (obj.nodeid != null) { parent.parent.debug('agent', "Agent update required, NodeID=0x" + obj.nodeid.substring(0, 16) + ', ' + obj.agentExeInfo.desc); }
parent.agentStats.agentBinaryUpdate++;
if ((obj.agentExeInfo.data == null) && (((obj.agentInfo.capabilities & 0x100) == 0) || (obj.agentExeInfo.zdata == null))) {
// Read the agent from disk
parent.fs.open(obj.agentExeInfo.path, 'r', function (err, fd) {
if (obj.agentExeInfo == null) return; // Agent disconnected during this call.
if (err) { parent.parent.debug('agentupdate', "ERROR: " + err); return console.error(err); }
obj.agentUpdate = { ptr: 0, buf: Buffer.alloc(parent.parent.agentUpdateBlockSize + 4), fd: fd, taskid: taskid };
// MeshCommand_CoreModule, ask mesh agent to clear the core.
// The new core will only be sent after the agent updates.
obj.sendBinary(common.ShortToStr(10) + common.ShortToStr(0));
// We got the agent file open on the server side, tell the agent we are sending an update ending with the SHA384 hash of the result
//console.log("Agent update file open.");
obj.sendBinary(common.ShortToStr(13) + common.ShortToStr(0)); // Command 13, start mesh agent download
// Send the first mesh agent update data block
obj.agentUpdate.buf[0] = 0;
obj.agentUpdate.buf[1] = 14;
obj.agentUpdate.buf[2] = 0;
obj.agentUpdate.buf[3] = 1;
parent.fs.read(obj.agentUpdate.fd, obj.agentUpdate.buf, 4, parent.parent.agentUpdateBlockSize, obj.agentUpdate.ptr, function (err, bytesRead, buffer) {
if (obj.agentUpdate == null) return;
if ((err != null) || (bytesRead == 0)) {
// Error reading the agent file, stop here.
try { parent.fs.close(obj.agentUpdate.fd); } catch (ex) { }
parent.parent.taskLimiter.completed(obj.agentUpdate.taskid); // Indicate this task complete
parent.parent.debug('agentupdate', "ERROR: Unable to read first block of agent binary from disk.");
delete obj.agentUpdate.buf;
delete obj.agentUpdate;
} else {
// Send the first block to the agent
obj.agentUpdate.ptr += bytesRead;
parent.parent.debug('agentupdate', "Sent first block of " + bytesRead + " bytes from disk.");
obj.sendBinary(obj.agentUpdate.buf); // Command 14, mesh agent first data block
}
});
});
} else {
// Send the agent from RAM
obj.agentUpdate = { ptr: 0, buf: Buffer.alloc(parent.parent.agentUpdateBlockSize + 4), taskid: taskid };
// MeshCommand_CoreModule, ask mesh agent to clear the core.
// The new core will only be sent after the agent updates.
obj.sendBinary(common.ShortToStr(10) + common.ShortToStr(0));
// We got the agent file open on the server side, tell the agent we are sending an update ending with the SHA384 hash of the result
obj.sendBinary(common.ShortToStr(13) + common.ShortToStr(0)); // Command 13, start mesh agent download
// Send the first mesh agent update data block
obj.agentUpdate.buf[0] = 0;
obj.agentUpdate.buf[1] = 14;
obj.agentUpdate.buf[2] = 0;
obj.agentUpdate.buf[3] = 1;
// If agent supports compression, send the compressed agent if possible.
if ((obj.agentInfo.capabilities & 0x100) && (obj.agentExeInfo.zdata != null)) {
// Send compressed data
obj.agentUpdate.agentUpdateData = obj.agentExeInfo.zdata;
obj.agentUpdate.agentUpdateHash = obj.agentExeInfo.zhash;
} else {
// Send uncompressed data
obj.agentUpdate.agentUpdateData = obj.agentExeInfo.data;
obj.agentUpdate.agentUpdateHash = obj.agentExeInfo.hash;
}
const len = Math.min(parent.parent.agentUpdateBlockSize, obj.agentUpdate.agentUpdateData.length - obj.agentUpdate.ptr);
if (len > 0) {
// Send the first block
obj.agentUpdate.agentUpdateData.copy(obj.agentUpdate.buf, 4, obj.agentUpdate.ptr, obj.agentUpdate.ptr + len);
obj.agentUpdate.ptr += len;
obj.sendBinary(obj.agentUpdate.buf); // Command 14, mesh agent first data block
parent.parent.debug('agentupdate', "Sent first block of " + len + " bytes from RAM.");
} else {
// Error
parent.parent.debug('agentupdate', "ERROR: Len of " + len + " is invalid.");
parent.parent.taskLimiter.completed(obj.agentUpdate.taskid); // Indicate this task complete
delete obj.agentUpdate.buf;
delete obj.agentUpdate;
}
}
}, null, 1);
} else {
// Check the mesh core, if the agent is capable of running one
if (((obj.agentInfo.capabilities & 16) != 0) && (parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].core != null)) {
obj.sendBinary(common.ShortToStr(11) + common.ShortToStr(0)); // Command 11, ask for mesh core hash.
}
}
}
}
else if (cmdid == 14) { // MeshCommand_AgentBinaryBlock
if ((msg.length == 4) && (obj.agentUpdate != null)) {
const status = common.ReadShort(msg, 2);
if (status == 1) {
if (obj.agentExeInfo.data == null) {
// Read the agent from disk
parent.fs.read(obj.agentUpdate.fd, obj.agentUpdate.buf, 4, parent.parent.agentUpdateBlockSize, obj.agentUpdate.ptr, function (err, bytesRead, buffer) {
if ((obj.agentExeInfo == null) || (obj.agentUpdate == null)) return; // Agent disconnected during this async call.
if ((err != null) || (bytesRead < 0)) {
// Error reading the agent file, stop here.
parent.parent.debug('agentupdate', "ERROR: Unable to read agent #" + obj.agentExeInfo.id + " binary from disk.");
try { parent.fs.close(obj.agentUpdate.fd); } catch (ex) { }
parent.parent.taskLimiter.completed(obj.agentUpdate.taskid); // Indicate this task complete
delete obj.agentUpdate.buf;
delete obj.agentUpdate;
} else {
// Send the next block to the agent
parent.parent.debug('agentupdate', "Sending disk agent #" + obj.agentExeInfo.id + " block, ptr=" + obj.agentUpdate.ptr + ", len=" + bytesRead + ".");
obj.agentUpdate.ptr += bytesRead;
if (bytesRead == parent.parent.agentUpdateBlockSize) { obj.sendBinary(obj.agentUpdate.buf); } else { obj.sendBinary(obj.agentUpdate.buf.slice(0, bytesRead + 4)); } // Command 14, mesh agent next data block
if ((bytesRead < parent.parent.agentUpdateBlockSize) || (obj.agentUpdate.ptr == obj.agentExeInfo.size)) {
parent.parent.debug('agentupdate', "Completed agent #" + obj.agentExeInfo.id + " update from disk, ptr=" + obj.agentUpdate.ptr + ".");
obj.sendBinary(common.ShortToStr(13) + common.ShortToStr(0) + obj.agentExeInfo.hash); // Command 13, end mesh agent download, send agent SHA384 hash
try { parent.fs.close(obj.agentUpdate.fd); } catch (ex) { }
parent.parent.taskLimiter.completed(obj.agentUpdate.taskid); // Indicate this task complete
delete obj.agentUpdate.buf;
delete obj.agentUpdate;
}
}
});
} else {
// Send the agent from RAM
const len = Math.min(parent.parent.agentUpdateBlockSize, obj.agentUpdate.agentUpdateData.length - obj.agentUpdate.ptr);
if (len > 0) {
obj.agentUpdate.agentUpdateData.copy(obj.agentUpdate.buf, 4, obj.agentUpdate.ptr, obj.agentUpdate.ptr + len);
if (len == parent.parent.agentUpdateBlockSize) { obj.sendBinary(obj.agentUpdate.buf); } else { obj.sendBinary(obj.agentUpdate.buf.slice(0, len + 4)); } // Command 14, mesh agent next data block
parent.parent.debug('agentupdate', "Sending RAM agent #" + obj.agentExeInfo.id + " block, ptr=" + obj.agentUpdate.ptr + ", len=" + len + ".");
obj.agentUpdate.ptr += len;
}
if (obj.agentUpdate.ptr == obj.agentUpdate.agentUpdateData.length) {
parent.parent.debug('agentupdate', "Completed agent #" + obj.agentExeInfo.id + " update from RAM, ptr=" + obj.agentUpdate.ptr + ".");
obj.sendBinary(common.ShortToStr(13) + common.ShortToStr(0) + obj.agentUpdate.agentUpdateHash); // Command 13, end mesh agent download, send agent SHA384 hash
parent.parent.taskLimiter.completed(obj.agentUpdate.taskid); // Indicate this task complete
delete obj.agentUpdate.buf;
delete obj.agentUpdate;
}
}
}
}
}
else if (cmdid == 15) { // MeshCommand_AgentTag
var tag = msg.substring(2);
while (tag.charCodeAt(tag.length - 1) == 0) { tag = tag.substring(0, tag.length - 1); } // Remove end-of-line zeros.
ChangeAgentTag(tag);
}
} else if (obj.authenticated < 2) { // We are not authenticated
// Check if this is a un-authenticated JSON
if (msg.charCodeAt(0) == 123) {
var str = msg.toString('utf8'), command = null;
if (str[0] == '{') {
try { command = JSON.parse(str); } catch (ex) { } // If the command can't be parsed, ignore it.
if ((command != null) && (command.action === 'agentName') && (typeof command.value == 'string') && (command.value.length > 0) && (command.value.length < 256)) { obj.agentName = command.value; }
}
return;
}
const cmd = common.ReadShort(msg, 0);
if (cmd == 1) {
// Agent authentication request
if ((msg.length != 98) || ((obj.receivedCommands & 1) != 0)) return;
obj.receivedCommands += 1; // Agent can't send the same command twice on the same connection ever. Block DOS attack path.
if (isIgnoreHashCheck()) {
// Send the agent web hash back to the agent
// Send 384 bits SHA384 hash of TLS cert + 384 bits nonce
obj.sendBinary(common.ShortToStr(1) + msg.substring(2, 50) + obj.nonce); // Command 1, hash + nonce. Use the web hash given by the agent.
} else {
// Check that the server hash matches our own web certificate hash (SHA384)
obj.agentSeenCerthash = msg.substring(2, 50);
if ((getWebCertHash(domain) != obj.agentSeenCerthash) && (getWebCertFullHash(domain) != obj.agentSeenCerthash) && (parent.defaultWebCertificateHash != obj.agentSeenCerthash) && (parent.defaultWebCertificateFullHash != obj.agentSeenCerthash)) {
if (parent.parent.supportsProxyCertificatesRequest !== false) {
obj.badWebCert = Buffer.from(parent.crypto.randomBytes(16), 'binary').toString('base64');
parent.wsagentsWithBadWebCerts[obj.badWebCert] = obj; // Add this agent to the list of of agents with bad web certificates.
parent.parent.updateProxyCertificates(false);
}
parent.agentStats.agentBadWebCertHashCount++;
parent.setAgentIssue(obj, "BadWebCertHash: " + Buffer.from(msg.substring(2, 50), 'binary').toString('hex'));
parent.parent.debug('agent', 'Agent bad web cert hash (Agent:' + (Buffer.from(msg.substring(2, 50), 'binary').toString('hex').substring(0, 10)) + ' != Server:' + (Buffer.from(getWebCertHash(domain), 'binary').toString('hex').substring(0, 10)) + ' or ' + (Buffer.from(getWebCertFullHash(domain), 'binary').toString('hex').substring(0, 10)) + '), holding connection (' + obj.remoteaddrport + ').');
parent.parent.debug('agent', 'Agent reported web cert hash:' + (Buffer.from(msg.substring(2, 50), 'binary').toString('hex')) + '.');
console.log('Agent bad web cert hash (Agent:' + (Buffer.from(msg.substring(2, 50), 'binary').toString('hex').substring(0, 10)) + ' != Server:' + (Buffer.from(getWebCertHash(domain), 'binary').toString('hex').substring(0, 10)) + ' or ' + (Buffer.from(getWebCertFullHash(domain), 'binary').toString('hex').substring(0, 10)) + '), holding connection (' + obj.remoteaddrport + ').');
console.log('Agent reported web cert hash:' + (Buffer.from(msg.substring(2, 50), 'binary').toString('hex')) + '.');
delete obj.agentSeenCerthash;
return;
} else {
// The hash matched one of the acceptable values, send the agent web hash back to the agent
// Send 384 bits SHA384 hash of TLS cert + 384 bits nonce
// Command 1, hash + nonce. Use the web hash given by the agent.
obj.sendBinary(common.ShortToStr(1) + obj.agentSeenCerthash + obj.nonce);
}
}
// Use our server private key to sign the ServerHash + AgentNonce + ServerNonce
obj.agentnonce = msg.substring(50, 98);
// Check if we got the agent auth confirmation
if ((obj.receivedCommands & 8) == 0) {
// If we did not get an indication that the agent already validated this server, send the server signature.
if (obj.useSwarmCert == true) {
// Perform the hash signature using older swarm server certificate
parent.parent.certificateOperations.acceleratorPerformSignature(1, msg.substring(2) + obj.nonce, null, function (tag, signature) {
// Send back our certificate + signature
obj.sendBinary(common.ShortToStr(2) + common.ShortToStr(parent.swarmCertificateAsn1.length) + parent.swarmCertificateAsn1 + signature); // Command 2, certificate + signature
});
} else {
// Perform the hash signature using the server agent certificate
parent.parent.certificateOperations.acceleratorPerformSignature(0, msg.substring(2) + obj.nonce, null, function (tag, signature) {
// Send back our certificate + signature
obj.sendBinary(common.ShortToStr(2) + common.ShortToStr(parent.agentCertificateAsn1.length) + parent.agentCertificateAsn1 + signature); // Command 2, certificate + signature
});
}
}
// Check the agent signature if we can
if (obj.unauthsign != null) {
if (processAgentSignature(obj.unauthsign) == false) {
parent.agentStats.agentBadSignature1Count++;
parent.setAgentIssue(obj, "BadSignature1");
parent.parent.debug('agent', 'Agent connected with bad signature, holding connection (' + obj.remoteaddrport + ').');
console.log('Agent connected with bad signature, holding connection (' + obj.remoteaddrport + ').'); return;
} else { completeAgentConnection(); }
}
}
else if (cmd == 2) {
// Agent certificate
if ((msg.length < 4) || ((obj.receivedCommands & 2) != 0)) return;
obj.receivedCommands += 2; // Agent can't send the same command twice on the same connection ever. Block DOS attack path.
// Decode the certificate
const certlen = common.ReadShort(msg, 2);
obj.unauth = {};
try { obj.unauth.nodeid = Buffer.from(forge.pki.getPublicKeyFingerprint(forge.pki.certificateFromAsn1(forge.asn1.fromDer(msg.substring(4, 4 + certlen))).publicKey, { md: forge.md.sha384.create() }).data, 'binary').toString('base64').replace(/\+/g, '@').replace(/\//g, '$'); } catch (ex) { console.log(ex); parent.parent.debug('agent', ex); return; }
obj.unauth.nodeCertPem = '-----BEGIN CERTIFICATE-----\r\n' + Buffer.from(msg.substring(4, 4 + certlen), 'binary').toString('base64') + '\r\n-----END CERTIFICATE-----';
// Check the agent signature if we can
if (obj.agentnonce == null) { obj.unauthsign = msg.substring(4 + certlen); } else {
if (processAgentSignature(msg.substring(4 + certlen)) == false) {
parent.agentStats.agentBadSignature2Count++;
parent.setAgentIssue(obj, "BadSignature2");
parent.parent.debug('agent', 'Agent connected with bad signature, holding connection (' + obj.remoteaddrport + ').');
console.log('Agent connected with bad signature, holding connection (' + obj.remoteaddrport + ').'); return;
}
}
completeAgentConnection();
}
else if (cmd == 3) {
// Agent meshid
if ((msg.length < 70) || ((obj.receivedCommands & 4) != 0)) return;
obj.receivedCommands += 4; // Agent can't send the same command twice on the same connection ever. Block DOS attack path.
// Set the meshid
obj.agentInfo = {};
obj.agentInfo.infoVersion = common.ReadInt(msg, 2);
obj.agentInfo.agentId = common.ReadInt(msg, 6);
obj.agentInfo.agentVersion = common.ReadInt(msg, 10);
obj.agentInfo.platformType = common.ReadInt(msg, 14);
if (obj.agentInfo.platformType > 8 || obj.agentInfo.platformType < 1) { obj.agentInfo.platformType = 1; }
if (msg.substring(50, 66) == '\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0') {
obj.meshid = Buffer.from(msg.substring(18, 50), 'binary').toString('hex'); // Older HEX MeshID
} else {
obj.meshid = Buffer.from(msg.substring(18, 66), 'binary').toString('base64').replace(/\+/g, '@').replace(/\//g, '$'); // New Base64 MeshID
}
//console.log('MeshID', obj.meshid);
obj.agentInfo.capabilities = common.ReadInt(msg, 66);
if (msg.length > 70) {
const computerNameLen = common.ReadShort(msg, 70);
obj.agentInfo.computerName = Buffer.from(msg.substring(72, 72 + computerNameLen), 'binary').toString('utf8');
//console.log('computerName', msg.length, computerNameLen, obj.agentInfo.computerName);
} else {
obj.agentInfo.computerName = '';
//console.log('computerName-none');
}
obj.dbMeshKey = 'mesh/' + domain.id + '/' + obj.meshid;
completeAgentConnection();
} else if (cmd == 4) {
if ((msg.length < 2) || ((obj.receivedCommands & 8) != 0)) return;
obj.receivedCommands += 8; // Agent can't send the same command twice on the same connection ever. Block DOS attack path.
// Agent already authenticated the server, wants to skip the server signature - which is great for server performance.
} else if (cmd == 5) {
// ServerID. Agent is telling us what serverid it expects. Useful if we have many server certificates.
if ((msg.substring(2, 34) == parent.swarmCertificateHash256) || (msg.substring(2, 50) == parent.swarmCertificateHash384)) { obj.useSwarmCert = true; }
} else if (cmd == 30) {
// Agent Commit Date. This is future proofing. Can be used to change server behavior depending on the date range of the agent.
try { obj.AgentCommitDate = Date.parse(msg.substring(2)) } catch (ex) { }
//console.log('Connected Agent Commit Date: ' + msg.substring(2) + ", " + Date.parse(msg.substring(2)));
}
}
});
// If error, do nothing
ws.on('error', function (err) { parent.parent.debug('agent', 'AGENT WSERR: ' + err); console.log('AGENT WSERR: ' + err); obj.close(0); });
// If the mesh agent web socket is closed, clean up.
ws.on('close', function (req) {
parent.agentStats.agentClose++;
if (obj.nodeid != null) {
const agentId = (obj.agentInfo && obj.agentInfo.agentId) ? obj.agentInfo.agentId : 'Unknown';
//console.log('Agent disconnect ' + obj.nodeid + ' (' + obj.remoteaddrport + ') id=' + agentId);
parent.parent.debug('agent', 'Agent disconnect ' + obj.nodeid + ' (' + obj.remoteaddrport + ') id=' + agentId);
// Log the agent disconnection if we are not testing agent update
if (args.agentupdatetest == null) {
if (parent.wsagentsDisconnections[obj.nodeid] == null) {
parent.wsagentsDisconnections[obj.nodeid] = 1;
} else {
parent.wsagentsDisconnections[obj.nodeid] = ++parent.wsagentsDisconnections[obj.nodeid];
}
}
}
obj.close(0);
});
// Return the mesh for this device, in some cases, we may auto-create the mesh.
function getMeshAutoCreate() {
var mesh = parent.meshes[obj.dbMeshKey];
// If the mesh was not found and we are in LAN mode, check of the domain can be corrected
if ((args.lanonly == true) && (mesh == null)) {
var smesh = obj.dbMeshKey.split('/');
for (var i in parent.parent.config.domains) {
mesh = parent.meshes['mesh/' + i + '/' + smesh[2]];
if (mesh != null) {
obj.domain = domain = parent.parent.config.domains[i];
obj.meshid = smesh[2];
obj.dbMeshKey = 'mesh/' + i + '/' + smesh[2];
obj.dbNodeKey = 'node/' + domain.id + '/' + obj.nodeid;
break;
}
}
}
if ((mesh == null) && (typeof domain.orphanagentuser == 'string')) {
const adminUser = parent.users['user/' + domain.id + '/' + domain.orphanagentuser.toLowerCase()];
if ((adminUser != null) && (adminUser.siteadmin == 0xFFFFFFFF)) {
// Mesh name is hex instead of base64
const meshname = obj.meshid.substring(0, 18);
// Create a new mesh for this device
const links = {};
links[adminUser._id] = { name: adminUser.name, rights: 0xFFFFFFFF };
mesh = { type: 'mesh', _id: obj.dbMeshKey, name: meshname, mtype: 2, desc: '', domain: domain.id, links: links };
db.Set(mesh);
parent.meshes[obj.dbMeshKey] = mesh;
if (adminUser.links == null) adminUser.links = {};
adminUser.links[obj.dbMeshKey] = { rights: 0xFFFFFFFF };
db.SetUser(adminUser);
parent.parent.DispatchEvent(parent.CreateMeshDispatchTargets(obj.dbMeshKey, [adminUser._id, obj.dbNodeKey]), obj, { etype: 'mesh', username: adminUser.name, meshid: obj.dbMeshKey, name: meshname, mtype: 2, desc: '', action: 'createmesh', links: links, msgid: 55, msgArgs: [obj.meshid], msg: "Created device group: " + obj.meshid, domain: domain.id });
}
} else {
if ((mesh != null) && (mesh.deleted != null) && (mesh.links)) {
// Must un-delete this mesh
var ids = parent.CreateMeshDispatchTargets(mesh._id, [obj.dbNodeKey]);
// See if users still exists, if so, add links to the mesh
for (var userid in mesh.links) {
const user = parent.users[userid];
if (user) {
if (user.links == null) { user.links = {}; }
if (user.links[mesh._id] == null) {
user.links[mesh._id] = { rights: mesh.links[userid].rights };
ids.push(user._id);
db.SetUser(user);
}
}
}
// Send out an event indicating this mesh was "created"
parent.parent.DispatchEvent(ids, obj, { etype: 'mesh', meshid: mesh._id, name: mesh.name, mtype: mesh.mtype, desc: mesh.desc, action: 'createmesh', links: mesh.links, msgid: 56, msgArgs: [mesh._id], msg: "Device group undeleted: " + mesh._id, domain: domain.id });
// Mark the mesh as active
delete mesh.deleted;
db.Set(mesh);
}
}
return mesh;
}
// Send a PING/PONG message
function sendPing() { obj.send('{"action":"ping"}'); }
function sendPong() { obj.send('{"action":"pong"}'); }
// Once we get all the information about an agent, run this to hook everything up to the server
function completeAgentConnection() {
if ((obj.authenticated != 1) || (obj.meshid == null) || obj.pendingCompleteAgentConnection || (obj.agentInfo == null)) { return; }
obj.pendingCompleteAgentConnection = true;
// Setup the agent PING/PONG timers
if ((typeof args.agentping == 'number') && (obj.pingtimer == null)) { obj.pingtimer = setInterval(sendPing, args.agentping * 1000); }
else if ((typeof args.agentpong == 'number') && (obj.pongtimer == null)) { obj.pongtimer = setInterval(sendPong, args.agentpong * 1000); }
// If this is a recovery agent
if (obj.agentInfo.capabilities & 0x40) {
// Inform mesh agent that it's authenticated.
delete obj.pendingCompleteAgentConnection;
obj.authenticated = 2;
obj.sendBinary(common.ShortToStr(4));
// Ask for mesh core hash.
obj.sendBinary(common.ShortToStr(11) + common.ShortToStr(0));
return;
}
// Check if we have too many agent sessions
if (typeof domain.limits.maxagentsessions == 'number') {
// Count the number of agent sessions for this domain
var domainAgentSessionCount = 0;
for (var i in parent.wsagents) { if (parent.wsagents[i].domain.id == domain.id) { domainAgentSessionCount++; } }
// Check if we have too many user sessions
if (domainAgentSessionCount >= domain.limits.maxagentsessions) {
// Too many, hold the connection.
parent.agentStats.agentMaxSessionHoldCount++;
return;
}
}
/*
// Check that the mesh exists
var mesh = parent.meshes[obj.dbMeshKey];
if (mesh == null) {
var holdConnection = true;
if (typeof domain.orphanagentuser == 'string') {
var adminUser = parent.users['user/' + domain.id + '/' + args.orphanagentuser];
if ((adminUser != null) && (adminUser.siteadmin == 0xFFFFFFFF)) {
// Create a new mesh for this device
holdConnection = false;
var links = {};
links[user._id] = { name: adminUser.name, rights: 0xFFFFFFFF };
mesh = { type: 'mesh', _id: obj.dbMeshKey, name: obj.meshid, mtype: 2, desc: '', domain: domain.id, links: links };
db.Set(mesh);
parent.meshes[obj.meshid] = mesh;
parent.parent.AddEventDispatch(parent.CreateMeshDispatchTargets(obj.meshid, [obj.dbNodeKey]), ws);
if (adminUser.links == null) user.links = {};
adminUser.links[obj.meshid] = { rights: 0xFFFFFFFF };
//adminUser.subscriptions = parent.subscribe(adminUser._id, ws);
db.SetUser(user);
parent.parent.DispatchEvent(parent.CreateMeshDispatchTargets(meshid, [user._id, obj.dbNodeKey]), obj, { etype: 'mesh', username: user.name, meshid: obj.meshid, name: obj.meshid, mtype: 2, desc: '', action: 'createmesh', links: links, msg: 'Mesh created: ' + obj.meshid, domain: domain.id });
}
}
if (holdConnection == true) {
// If we disconnect, the agent will just reconnect. We need to log this or tell agent to connect in a few hours.
parent.parent.debug('agent', 'Agent connected with invalid domain/mesh, holding connection (' + obj.remoteaddrport + ', ' + obj.dbMeshKey + ').');
console.log('Agent connected with invalid domain/mesh, holding connection (' + obj.remoteaddrport + ', ' + obj.dbMeshKey + ').');
return;
}
}
if (mesh.mtype != 2) { // If we disconnect, the agnet will just reconnect. We need to log this or tell agent to connect in a few hours.
parent.parent.debug('agent', 'Agent connected with invalid mesh type, holding connection (' + obj.remoteaddrport + ').');
console.log('Agent connected with invalid mesh type, holding connection (' + obj.remoteaddrport + ').');
return;
}
*/
// Check that the node exists
db.Get(obj.dbNodeKey, function (err, nodes) {
if (obj.agentInfo == null) { return; }
var device, mesh;
// See if this node exists in the database
if ((nodes == null) || (nodes.length == 0)) {
// This device does not exist, use the meshid given by the device
// Check if we already have too many devices for this domain
if (domain.limits && (typeof domain.limits.maxdevices == 'number')) {
db.isMaxType(domain.limits.maxdevices, 'node', domain.id, function (ismax, count) {
if (ismax == true) {
// Too many devices in this domain.
parent.agentStats.maxDomainDevicesReached++;
} else {
// We are under the limit, create the new device.
completeAgentConnection2();
}
});
} else {
completeAgentConnection2();
}
return;
} else {
device = nodes[0];
// This device exists, meshid given by the device must be ignored, use the server side one.
if ((device.meshid != null) && (device.meshid != obj.dbMeshKey)) {
obj.dbMeshKey = device.meshid;
obj.meshid = device.meshid.split('/')[2];
}
// See if this mesh exists, if it does not we may want to create it.
mesh = getMeshAutoCreate();
// Check if the mesh exists
if (mesh == null) {
// If we disconnect, the agent will just reconnect. We need to log this or tell agent to connect in a few hours.
parent.agentStats.invalidDomainMesh2Count++;
parent.setAgentIssue(obj, "invalidDomainMesh2");
parent.parent.debug('agent', 'Agent connected with invalid domain/mesh, holding connection (' + obj.remoteaddrport + ', ' + obj.dbMeshKey + ').');
console.log('Agent connected with invalid domain/mesh, holding connection (' + obj.remoteaddrport + ', ' + obj.dbMeshKey + ').');
return;
}
// Check if the mesh is the right type
if (mesh.mtype != 2) {
// If we disconnect, the agent will just reconnect. We need to log this or tell agent to connect in a few hours.
parent.agentStats.invalidMeshType2Count++;
parent.setAgentIssue(obj, "invalidMeshType2");
parent.parent.debug('agent', 'Agent connected with invalid mesh type, holding connection (' + obj.remoteaddrport + ').');
console.log('Agent connected with invalid mesh type, holding connection (' + obj.remoteaddrport + ').');
return;
}
// Mark when this device connected
obj.connectTime = Date.now();
db.Set({ _id: 'lc' + obj.dbNodeKey, type: 'lastconnect', domain: domain.id, time: obj.connectTime, addr: obj.remoteaddrport, cause: 1 });
// Device already exists, look if changes have occured
var changes = [], change = 0, log = 0;
if (device.agent == null) { device.agent = { ver: obj.agentInfo.agentVersion, id: obj.agentInfo.agentId, caps: obj.agentInfo.capabilities }; change = 1; }
if (device.rname != obj.agentInfo.computerName) { device.rname = obj.agentInfo.computerName; change = 1; changes.push('computer name'); }
if (device.agent.ver != obj.agentInfo.agentVersion) { device.agent.ver = obj.agentInfo.agentVersion; change = 1; changes.push('agent version'); }
if (device.agent.id != obj.agentInfo.agentId) { device.agent.id = obj.agentInfo.agentId; change = 1; changes.push('agent type'); }
if ((device.agent.caps & 24) != (obj.agentInfo.capabilities & 24)) { device.agent.caps = obj.agentInfo.capabilities; change = 1; changes.push('agent capabilities'); } // If agent console or javascript support changes, update capabilities
if (mesh.flags && (mesh.flags & 2) && (device.name != obj.agentInfo.computerName)) { device.name = obj.agentInfo.computerName; change = 1; } // We want the server name to be sync'ed to the hostname
if (change == 1) {
// Do some clean up if needed, these values should not be in the database.
if (device.conn != null) { delete device.conn; }
if (device.pwr != null) { delete device.pwr; }
if (device.agct != null) { delete device.agct; }
if (device.cict != null) { delete device.cict; }
// Save the updated device in the database
db.Set(device);
// If this is a temporary device, don't log changes
if (obj.agentInfo.capabilities & 0x20) { log = 0; }
// Event the node change
var event = { etype: 'node', action: 'changenode', nodeid: obj.dbNodeKey, domain: domain.id, node: parent.CloneSafeNode(device) };
if (log == 0) { event.nolog = 1; } else { event.msg = 'Changed device ' + device.name + ' from group ' + mesh.name + ': ' + changes.join(', '); }
if (db.changeStream) { event.noact = 1; } // If DB change stream is active, don't use this event to change the node. Another event will come.
parent.parent.DispatchEvent(parent.CreateMeshDispatchTargets(device.meshid, [obj.dbNodeKey]), obj, event);
}
}
completeAgentConnection3(device, mesh);
});
}
function completeAgentConnection2() {
// See if this mesh exists, if it does not we may want to create it.
var mesh = getMeshAutoCreate();
// Check if the mesh exists
if (mesh == null) {
// If we disconnect, the agent will just reconnect. We need to log this or tell agent to connect in a few hours.
parent.agentStats.invalidDomainMeshCount++;
parent.setAgentIssue(obj, "invalidDomainMesh");
parent.parent.debug('agent', 'Agent connected with invalid domain/mesh, holding connection (' + obj.remoteaddrport + ', ' + obj.dbMeshKey + ').');
console.log('Agent connected with invalid domain/mesh, holding connection (' + obj.remoteaddrport + ', ' + obj.dbMeshKey + ').');
return;
}
// Check if the mesh is the right type
if (mesh.mtype != 2) {
// If we disconnect, the agent will just reconnect. We need to log this or tell agent to connect in a few hours.
parent.agentStats.invalidMeshTypeCount++;
parent.setAgentIssue(obj, "invalidMeshType");
parent.parent.debug('agent', 'Agent connected with invalid mesh type, holding connection (' + obj.remoteaddrport + ').');
console.log('Agent connected with invalid mesh type, holding connection (' + obj.remoteaddrport + ').');
return;
}
// Mark when this device connected
obj.connectTime = Date.now();
db.Set({ _id: 'lc' + obj.dbNodeKey, type: 'lastconnect', domain: domain.id, time: obj.connectTime, addr: obj.remoteaddrport, cause: 1 });
// This node does not exist, create it.
var agentName = obj.agentName ? obj.agentName : obj.agentInfo.computerName;
var device = { type: 'node', mtype: mesh.mtype, _id: obj.dbNodeKey, icon: obj.agentInfo.platformType, meshid: obj.dbMeshKey, name: agentName, rname: obj.agentInfo.computerName, domain: domain.id, agent: { ver: obj.agentInfo.agentVersion, id: obj.agentInfo.agentId, caps: obj.agentInfo.capabilities }, host: null };
db.Set(device);
// Event the new node
if (obj.agentInfo.capabilities & 0x20) {
// This is a temporary agent, don't log.
parent.parent.DispatchEvent(parent.CreateMeshDispatchTargets(obj.dbMeshKey, [obj.dbNodeKey]), obj, { etype: 'node', action: 'addnode', node: device, domain: domain.id, nolog: 1 });
} else {
parent.parent.DispatchEvent(parent.CreateMeshDispatchTargets(obj.dbMeshKey, [obj.dbNodeKey]), obj, { etype: 'node', action: 'addnode', node: device, msgid: 57, msgArgs: [obj.agentInfo.computerName, mesh.name], msg: ('Added device ' + obj.agentInfo.computerName + ' to device group ' + mesh.name), domain: domain.id });
}
completeAgentConnection3(device, mesh);
}
function completeAgentConnection3(device, mesh) {
// Check if this agent is already connected
const dupAgent = parent.wsagents[obj.dbNodeKey];
parent.wsagents[obj.dbNodeKey] = obj;
if (dupAgent) {
// Record duplicate agents
if (parent.duplicateAgentsLog[obj.dbNodeKey] == null) {
if (dupAgent.remoteaddr == obj.remoteaddr) {
parent.duplicateAgentsLog[obj.dbNodeKey] = { name: device.name, group: mesh.name, ip: [obj.remoteaddr], count: 1 };
} else {
parent.duplicateAgentsLog[obj.dbNodeKey] = { name: device.name, group: mesh.name, ip: [obj.remoteaddr, dupAgent.remoteaddr], count: 1 };
}
} else {
parent.duplicateAgentsLog[obj.dbNodeKey].name = device.name;
parent.duplicateAgentsLog[obj.dbNodeKey].group = mesh.name;
parent.duplicateAgentsLog[obj.dbNodeKey].count++;
if (parent.duplicateAgentsLog[obj.dbNodeKey].ip.indexOf(obj.remoteaddr) == -1) { parent.duplicateAgentsLog[obj.dbNodeKey].ip.push(obj.remoteaddr); }
}
// Close the duplicate agent
parent.agentStats.duplicateAgentCount++;
parent.setAgentIssue(obj, 'duplicateAgent');
if (obj.nodeid != null) { parent.parent.debug('agent', 'Duplicate agent ' + obj.nodeid + ' (' + obj.remoteaddrport + ')'); }
dupAgent.close(3);
} else {
// Indicate the agent is connected
parent.parent.SetConnectivityState(obj.dbMeshKey, obj.dbNodeKey, obj.connectTime, 1, 1);
}
// We are done, ready to communicate with this agent
delete obj.pendingCompleteAgentConnection;
obj.authenticated = 2;
// Check how many times this agent disconnected in the last few minutes.
const disconnectCount = parent.wsagentsDisconnections[obj.nodeid];
if (disconnectCount > 6) {
parent.parent.debug('agent', 'Agent in big trouble: NodeId=' + obj.nodeid + ', IP=' + obj.remoteaddrport + ', Agent=' + obj.agentInfo.agentId + '.');
console.log('Agent in big trouble: NodeId=' + obj.nodeid + ', IP=' + obj.remoteaddrport + ', Agent=' + obj.agentInfo.agentId + '.');
parent.agentStats.agentInBigTrouble++;
// TODO: Log or do something to recover?
return;
}
// Command 4, inform mesh agent that it's authenticated.
obj.sendBinary(common.ShortToStr(4));
// Not sure why, but in rare cases, obj.agentInfo is undefined here.
if ((obj.agentInfo == null) || (typeof obj.agentInfo.capabilities != 'number')) { return; } // This is an odd case.
obj.agentExeInfo = parent.parent.meshAgentBinaries[obj.agentInfo.agentId];
// Check if this agent is reconnecting too often.
if (disconnectCount > 4) {
// Too many disconnections, this agent has issues. Just clear the core.
obj.sendBinary(common.ShortToStr(10) + common.ShortToStr(0));
parent.parent.debug('agent', 'Agent in trouble: NodeId=' + obj.nodeid + ', IP=' + obj.remoteaddrport + ', Agent=' + obj.agentInfo.agentId + '.');
parent.agentStats.agentInTrouble++;
//console.log('Agent in trouble: NodeId=' + obj.nodeid + ', IP=' + obj.remoteaddrport + ', Agent=' + obj.agentInfo.agentId + '.');
// TODO: Log or do something to recover?
return;
}
// Check if we need to make an native update check
var corename = null;
if (parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId] != null) {
corename = parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].core;
} else {
// MeshCommand_CoreModule, ask mesh agent to clear the core
obj.sendBinary(common.ShortToStr(10) + common.ShortToStr(0));
}
if ((obj.agentExeInfo != null) && (obj.agentExeInfo.update == true)) {
// Ask the agent for it's executable binary hash
obj.sendBinary(common.ShortToStr(12) + common.ShortToStr(0));
} else {
// Check the mesh core, if the agent is capable of running one
if (((obj.agentInfo.capabilities & 16) != 0) && (corename != null)) {
obj.sendBinary(common.ShortToStr(11) + common.ShortToStr(0)); // Command 11, ask for mesh core hash.
} else {
agentCoreIsStable(); // No updates needed, agent is ready to go.
}
}
}
// Indicate to the agent that we want to check Intel AMT configuration
// This may trigger a CIRA-LMS tunnel from the agent so the server can inspect the device.
obj.sendUpdatedIntelAmtPolicy = function (policy) {
if (obj.agentExeInfo && (obj.agentExeInfo.amt == true)) { // Only send Intel AMT policy to agents what could have AMT.
if (policy == null) { var mesh = parent.meshes[obj.dbMeshKey]; if (mesh == null) return; policy = mesh.amt; }
if ((policy != null) && (policy.type != 0)) {
const cookie = parent.parent.encodeCookie({ a: 'apf', n: obj.dbNodeKey, m: obj.dbMeshKey }, parent.parent.loginCookieEncryptionKey);
try { obj.send(JSON.stringify({ action: 'amtconfig', user: '**MeshAgentApfTunnel**', pass: cookie })); } catch (ex) { }
}
}
}
function recoveryAgentCoreIsStable(mesh) {
parent.agentStats.recoveryCoreIsStableCount++;
// Recovery agent is doing ok, lets perform main agent checking.
//console.log('recoveryAgentCoreIsStable()');
// Fetch the the real agent nodeid
db.Get('da' + obj.dbNodeKey, function (err, nodes, self) {
if ((nodes != null) && (nodes.length == 1)) {
self.realNodeKey = nodes[0].raid;
// Get agent connection state
var agentConnected = false;
var state = parent.parent.GetConnectivityState(self.realNodeKey);
if (state) { agentConnected = ((state.connectivity & 1) != 0) }
self.send(JSON.stringify({ action: 'diagnostic', value: { command: 'query', value: self.realNodeKey, agent: agentConnected } }));
} else {
self.send(JSON.stringify({ action: 'diagnostic', value: { command: 'query', value: null } }));
}
}, obj);
}
function agentCoreIsStable() {
parent.agentStats.coreIsStableCount++;
// Check that the mesh exists
const mesh = parent.meshes[obj.dbMeshKey];
if (mesh == null) {
parent.agentStats.meshDoesNotExistCount++;
parent.setAgentIssue(obj, "meshDoesNotExist");
// TODO: Mark this agent as part of a mesh that does not exists.
return; // Probably not worth doing anything else. Hold this agent.
}
// Check if this is a recovery agent
if (obj.agentInfo.capabilities & 0x40) {
recoveryAgentCoreIsStable(mesh);
return;
}
// Fetch the the diagnostic agent nodeid
db.Get('ra' + obj.dbNodeKey, function (err, nodes) {
if ((nodes != null) && (nodes.length == 1)) {
obj.diagnosticNodeKey = nodes[0].daid;
obj.send(JSON.stringify({ action: 'diagnostic', value: { command: 'query', value: obj.diagnosticNodeKey } }));
}
});
// Indicate that we want to check the Intel AMT configuration