aboutsummaryrefslogtreecommitdiff
path: root/vendor/golang.org/x/sys/windows/security_windows.go
blob: d414ef13bef04e1ae1a992502076851f0515a0d2 (plain)
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
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package windows

import (
	"syscall"
	"unsafe"

	"golang.org/x/sys/internal/unsafeheader"
)

const (
	NameUnknown          = 0
	NameFullyQualifiedDN = 1
	NameSamCompatible    = 2
	NameDisplay          = 3
	NameUniqueId         = 6
	NameCanonical        = 7
	NameUserPrincipal    = 8
	NameCanonicalEx      = 9
	NameServicePrincipal = 10
	NameDnsDomain        = 12
)

// This function returns 1 byte BOOLEAN rather than the 4 byte BOOL.
// http://blogs.msdn.com/b/drnick/archive/2007/12/19/windows-and-upn-format-credentials.aspx
//sys	TranslateName(accName *uint16, accNameFormat uint32, desiredNameFormat uint32, translatedName *uint16, nSize *uint32) (err error) [failretval&0xff==0] = secur32.TranslateNameW
//sys	GetUserNameEx(nameFormat uint32, nameBuffre *uint16, nSize *uint32) (err error) [failretval&0xff==0] = secur32.GetUserNameExW

// TranslateAccountName converts a directory service
// object name from one format to another.
func TranslateAccountName(username string, from, to uint32, initSize int) (string, error) {
	u, e := UTF16PtrFromString(username)
	if e != nil {
		return "", e
	}
	n := uint32(50)
	for {
		b := make([]uint16, n)
		e = TranslateName(u, from, to, &b[0], &n)
		if e == nil {
			return UTF16ToString(b[:n]), nil
		}
		if e != ERROR_INSUFFICIENT_BUFFER {
			return "", e
		}
		if n <= uint32(len(b)) {
			return "", e
		}
	}
}

const (
	// do not reorder
	NetSetupUnknownStatus = iota
	NetSetupUnjoined
	NetSetupWorkgroupName
	NetSetupDomainName
)

type UserInfo10 struct {
	Name       *uint16
	Comment    *uint16
	UsrComment *uint16
	FullName   *uint16
}

//sys	NetUserGetInfo(serverName *uint16, userName *uint16, level uint32, buf **byte) (neterr error) = netapi32.NetUserGetInfo
//sys	NetGetJoinInformation(server *uint16, name **uint16, bufType *uint32) (neterr error) = netapi32.NetGetJoinInformation
//sys	NetApiBufferFree(buf *byte) (neterr error) = netapi32.NetApiBufferFree

const (
	// do not reorder
	SidTypeUser = 1 + iota
	SidTypeGroup
	SidTypeDomain
	SidTypeAlias
	SidTypeWellKnownGroup
	SidTypeDeletedAccount
	SidTypeInvalid
	SidTypeUnknown
	SidTypeComputer
	SidTypeLabel
)

type SidIdentifierAuthority struct {
	Value [6]byte
}

var (
	SECURITY_NULL_SID_AUTHORITY        = SidIdentifierAuthority{[6]byte{0, 0, 0, 0, 0, 0}}
	SECURITY_WORLD_SID_AUTHORITY       = SidIdentifierAuthority{[6]byte{0, 0, 0, 0, 0, 1}}
	SECURITY_LOCAL_SID_AUTHORITY       = SidIdentifierAuthority{[6]byte{0, 0, 0, 0, 0, 2}}
	SECURITY_CREATOR_SID_AUTHORITY     = SidIdentifierAuthority{[6]byte{0, 0, 0, 0, 0, 3}}
	SECURITY_NON_UNIQUE_AUTHORITY      = SidIdentifierAuthority{[6]byte{0, 0, 0, 0, 0, 4}}
	SECURITY_NT_AUTHORITY              = SidIdentifierAuthority{[6]byte{0, 0, 0, 0, 0, 5}}
	SECURITY_MANDATORY_LABEL_AUTHORITY = SidIdentifierAuthority{[6]byte{0, 0, 0, 0, 0, 16}}
)

const (
	SECURITY_NULL_RID                   = 0
	SECURITY_WORLD_RID                  = 0
	SECURITY_LOCAL_RID                  = 0
	SECURITY_CREATOR_OWNER_RID          = 0
	SECURITY_CREATOR_GROUP_RID          = 1
	SECURITY_DIALUP_RID                 = 1
	SECURITY_NETWORK_RID                = 2
	SECURITY_BATCH_RID                  = 3
	SECURITY_INTERACTIVE_RID            = 4
	SECURITY_LOGON_IDS_RID              = 5
	SECURITY_SERVICE_RID                = 6
	SECURITY_LOCAL_SYSTEM_RID           = 18
	SECURITY_BUILTIN_DOMAIN_RID         = 32
	SECURITY_PRINCIPAL_SELF_RID         = 10
	SECURITY_CREATOR_OWNER_SERVER_RID   = 0x2
	SECURITY_CREATOR_GROUP_SERVER_RID   = 0x3
	SECURITY_LOGON_IDS_RID_COUNT        = 0x3
	SECURITY_ANONYMOUS_LOGON_RID        = 0x7
	SECURITY_PROXY_RID                  = 0x8
	SECURITY_ENTERPRISE_CONTROLLERS_RID = 0x9
	SECURITY_SERVER_LOGON_RID           = SECURITY_ENTERPRISE_CONTROLLERS_RID
	SECURITY_AUTHENTICATED_USER_RID     = 0xb
	SECURITY_RESTRICTED_CODE_RID        = 0xc
	SECURITY_NT_NON_UNIQUE_RID          = 0x15
)

// Predefined domain-relative RIDs for local groups.
// See https://msdn.microsoft.com/en-us/library/windows/desktop/aa379649(v=vs.85).aspx
const (
	DOMAIN_ALIAS_RID_ADMINS                         = 0x220
	DOMAIN_ALIAS_RID_USERS                          = 0x221
	DOMAIN_ALIAS_RID_GUESTS                         = 0x222
	DOMAIN_ALIAS_RID_POWER_USERS                    = 0x223
	DOMAIN_ALIAS_RID_ACCOUNT_OPS                    = 0x224
	DOMAIN_ALIAS_RID_SYSTEM_OPS                     = 0x225
	DOMAIN_ALIAS_RID_PRINT_OPS                      = 0x226
	DOMAIN_ALIAS_RID_BACKUP_OPS                     = 0x227
	DOMAIN_ALIAS_RID_REPLICATOR                     = 0x228
	DOMAIN_ALIAS_RID_RAS_SERVERS                    = 0x229
	DOMAIN_ALIAS_RID_PREW2KCOMPACCESS               = 0x22a
	DOMAIN_ALIAS_RID_REMOTE_DESKTOP_USERS           = 0x22b
	DOMAIN_ALIAS_RID_NETWORK_CONFIGURATION_OPS      = 0x22c
	DOMAIN_ALIAS_RID_INCOMING_FOREST_TRUST_BUILDERS = 0x22d
	DOMAIN_ALIAS_RID_MONITORING_USERS               = 0x22e
	DOMAIN_ALIAS_RID_LOGGING_USERS                  = 0x22f
	DOMAIN_ALIAS_RID_AUTHORIZATIONACCESS            = 0x230
	DOMAIN_ALIAS_RID_TS_LICENSE_SERVERS             = 0x231
	DOMAIN_ALIAS_RID_DCOM_USERS                     = 0x232
	DOMAIN_ALIAS_RID_IUSERS                         = 0x238
	DOMAIN_ALIAS_RID_CRYPTO_OPERATORS               = 0x239
	DOMAIN_ALIAS_RID_CACHEABLE_PRINCIPALS_GROUP     = 0x23b
	DOMAIN_ALIAS_RID_NON_CACHEABLE_PRINCIPALS_GROUP = 0x23c
	DOMAIN_ALIAS_RID_EVENT_LOG_READERS_GROUP        = 0x23d
	DOMAIN_ALIAS_RID_CERTSVC_DCOM_ACCESS_GROUP      = 0x23e
)

//sys	LookupAccountSid(systemName *uint16, sid *SID, name *uint16, nameLen *uint32, refdDomainName *uint16, refdDomainNameLen *uint32, use *uint32) (err error) = advapi32.LookupAccountSidW
//sys	LookupAccountName(systemName *uint16, accountName *uint16, sid *SID, sidLen *uint32, refdDomainName *uint16, refdDomainNameLen *uint32, use *uint32) (err error) = advapi32.LookupAccountNameW
//sys	ConvertSidToStringSid(sid *SID, stringSid **uint16) (err error) = advapi32.ConvertSidToStringSidW
//sys	ConvertStringSidToSid(stringSid *uint16, sid **SID) (err error) = advapi32.ConvertStringSidToSidW
//sys	GetLengthSid(sid *SID) (len uint32) = advapi32.GetLengthSid
//sys	CopySid(destSidLen uint32, destSid *SID, srcSid *SID) (err error) = advapi32.CopySid
//sys	AllocateAndInitializeSid(identAuth *SidIdentifierAuthority, subAuth byte, subAuth0 uint32, subAuth1 uint32, subAuth2 uint32, subAuth3 uint32, subAuth4 uint32, subAuth5 uint32, subAuth6 uint32, subAuth7 uint32, sid **SID) (err error) = advapi32.AllocateAndInitializeSid
//sys	createWellKnownSid(sidType WELL_KNOWN_SID_TYPE, domainSid *SID, sid *SID, sizeSid *uint32) (err error) = advapi32.CreateWellKnownSid
//sys	isWellKnownSid(sid *SID, sidType WELL_KNOWN_SID_TYPE) (isWellKnown bool) = advapi32.IsWellKnownSid
//sys	FreeSid(sid *SID) (err error) [failretval!=0] = advapi32.FreeSid
//sys	EqualSid(sid1 *SID, sid2 *SID) (isEqual bool) = advapi32.EqualSid
//sys	getSidIdentifierAuthority(sid *SID) (authority *SidIdentifierAuthority) = advapi32.GetSidIdentifierAuthority
//sys	getSidSubAuthorityCount(sid *SID) (count *uint8) = advapi32.GetSidSubAuthorityCount
//sys	getSidSubAuthority(sid *SID, index uint32) (subAuthority *uint32) = advapi32.GetSidSubAuthority
//sys	isValidSid(sid *SID) (isValid bool) = advapi32.IsValidSid

// The security identifier (SID) structure is a variable-length
// structure used to uniquely identify users or groups.
type SID struct{}

// StringToSid converts a string-format security identifier
// SID into a valid, functional SID.
func StringToSid(s string) (*SID, error) {
	var sid *SID
	p, e := UTF16PtrFromString(s)
	if e != nil {
		return nil, e
	}
	e = ConvertStringSidToSid(p, &sid)
	if e != nil {
		return nil, e
	}
	defer LocalFree((Handle)(unsafe.Pointer(sid)))
	return sid.Copy()
}

// LookupSID retrieves a security identifier SID for the account
// and the name of the domain on which the account was found.
// System specify target computer to search.
func LookupSID(system, account string) (sid *SID, domain string, accType uint32, err error) {
	if len(account) == 0 {
		return nil, "", 0, syscall.EINVAL
	}
	acc, e := UTF16PtrFromString(account)
	if e != nil {
		return nil, "", 0, e
	}
	var sys *uint16
	if len(system) > 0 {
		sys, e = UTF16PtrFromString(system)
		if e != nil {
			return nil, "", 0, e
		}
	}
	n := uint32(50)
	dn := uint32(50)
	for {
		b := make([]byte, n)
		db := make([]uint16, dn)
		sid = (*SID)(unsafe.Pointer(&b[0]))
		e = LookupAccountName(sys, acc, sid, &n, &db[0], &dn, &accType)
		if e == nil {
			return sid, UTF16ToString(db), accType, nil
		}
		if e != ERROR_INSUFFICIENT_BUFFER {
			return nil, "", 0, e
		}
		if n <= uint32(len(b)) {
			return nil, "", 0, e
		}
	}
}

// String converts SID to a string format suitable for display, storage, or transmission.
func (sid *SID) String() string {
	var s *uint16
	e := ConvertSidToStringSid(sid, &s)
	if e != nil {
		return ""
	}
	defer LocalFree((Handle)(unsafe.Pointer(s)))
	return UTF16ToString((*[256]uint16)(unsafe.Pointer(s))[:])
}

// Len returns the length, in bytes, of a valid security identifier SID.
func (sid *SID) Len() int {
	return int(GetLengthSid(sid))
}

// Copy creates a duplicate of security identifier SID.
func (sid *SID) Copy() (*SID, error) {
	b := make([]byte, sid.Len())
	sid2 := (*SID)(unsafe.Pointer(&b[0]))
	e := CopySid(uint32(len(b)), sid2, sid)
	if e != nil {
		return nil, e
	}
	return sid2, nil
}

// IdentifierAuthority returns the identifier authority of the SID.
func (sid *SID) IdentifierAuthority() SidIdentifierAuthority {
	return *getSidIdentifierAuthority(sid)
}

// SubAuthorityCount returns the number of sub-authorities in the SID.
func (sid *SID) SubAuthorityCount() uint8 {
	return *getSidSubAuthorityCount(sid)
}

// SubAuthority returns the sub-authority of the SID as specified by
// the index, which must be less than sid.SubAuthorityCount().
func (sid *SID) SubAuthority(idx uint32) uint32 {
	if idx >= uint32(sid.SubAuthorityCount()) {
		panic("sub-authority index out of range")
	}
	return *getSidSubAuthority(sid, idx)
}

// IsValid returns whether the SID has a valid revision and length.
func (sid *SID) IsValid() bool {
	return isValidSid(sid)
}

// Equals compares two SIDs for equality.
func (sid *SID) Equals(sid2 *SID) bool {
	return EqualSid(sid, sid2)
}

// IsWellKnown determines whether the SID matches the well-known sidType.
func (sid *SID) IsWellKnown(sidType WELL_KNOWN_SID_TYPE) bool {
	return isWellKnownSid(sid, sidType)
}

// LookupAccount retrieves the name of the account for this SID
// and the name of the first domain on which this SID is found.
// System specify target computer to search for.
func (sid *SID) LookupAccount(system string) (account, domain string, accType uint32, err error) {
	var sys *uint16
	if len(system) > 0 {
		sys, err = UTF16PtrFromString(system)
		if err != nil {
			return "", "", 0, err
		}
	}
	n := uint32(50)
	dn := uint32(50)
	for {
		b := make([]uint16, n)
		db := make([]uint16, dn)
		e := LookupAccountSid(sys, sid, &b[0], &n, &db[0], &dn, &accType)
		if e == nil {
			return UTF16ToString(b), UTF16ToString(db), accType, nil
		}
		if e != ERROR_INSUFFICIENT_BUFFER {
			return "", "", 0, e
		}
		if n <= uint32(len(b)) {
			return "", "", 0, e
		}
	}
}

// Various types of pre-specified SIDs that can be synthesized and compared at runtime.
type WELL_KNOWN_SID_TYPE uint32

const (
	WinNullSid                                    = 0
	WinWorldSid                                   = 1
	WinLocalSid                                   = 2
	WinCreatorOwnerSid                            = 3
	WinCreatorGroupSid                            = 4
	WinCreatorOwnerServerSid                      = 5
	WinCreatorGroupServerSid                      = 6
	WinNtAuthoritySid                             = 7
	WinDialupSid                                  = 8
	WinNetworkSid                                 = 9
	WinBatchSid                                   = 10
	WinInteractiveSid                             = 11
	WinServiceSid                                 = 12
	WinAnonymousSid                               = 13
	WinProxySid                                   = 14
	WinEnterpriseControllersSid                   = 15
	WinSelfSid                                    = 16
	WinAuthenticatedUserSid                       = 17
	WinRestrictedCodeSid                          = 18
	WinTerminalServerSid                          = 19
	WinRemoteLogonIdSid                           = 20
	WinLogonIdsSid                                = 21
	WinLocalSystemSid                             = 22
	WinLocalServiceSid                            = 23
	WinNetworkServiceSid                          = 24
	WinBuiltinDomainSid                           = 25
	WinBuiltinAdministratorsSid                   = 26
	WinBuiltinUsersSid                            = 27
	WinBuiltinGuestsSid                           = 28
	WinBuiltinPowerUsersSid                       = 29
	WinBuiltinAccountOperatorsSid                 = 30
	WinBuiltinSystemOperatorsSid                  = 31
	WinBuiltinPrintOperatorsSid                   = 32
	WinBuiltinBackupOperatorsSid                  = 33
	WinBuiltinReplicatorSid                       = 34
	WinBuiltinPreWindows2000CompatibleAccessSid   = 35
	WinBuiltinRemoteDesktopUsersSid               = 36
	WinBuiltinNetworkConfigurationOperatorsSid    = 37
	WinAccountAdministratorSid                    = 38
	WinAccountGuestSid                            = 39
	WinAccountKrbtgtSid                           = 40
	WinAccountDomainAdminsSid                     = 41
	WinAccountDomainUsersSid                      = 42
	WinAccountDomainGuestsSid                     = 43
	WinAccountComputersSid                        = 44
	WinAccountControllersSid                      = 45
	WinAccountCertAdminsSid                       = 46
	WinAccountSchemaAdminsSid                     = 47
	WinAccountEnterpriseAdminsSid                 = 48
	WinAccountPolicyAdminsSid                     = 49
	WinAccountRasAndIasServersSid                 = 50
	WinNTLMAuthenticationSid                      = 51
	WinDigestAuthenticationSid                    = 52
	WinSChannelAuthenticationSid                  = 53
	WinThisOrganizationSid                        = 54
	WinOtherOrganizationSid                       = 55
	WinBuiltinIncomingForestTrustBuildersSid      = 56
	WinBuiltinPerfMonitoringUsersSid              = 57
	WinBuiltinPerfLoggingUsersSid                 = 58
	WinBuiltinAuthorizationAccessSid              = 59
	WinBuiltinTerminalServerLicenseServersSid     = 60
	WinBuiltinDCOMUsersSid                        = 61
	WinBuiltinIUsersSid                           = 62
	WinIUserSid                                   = 63
	WinBuiltinCryptoOperatorsSid                  = 64
	WinUntrustedLabelSid                          = 65
	WinLowLabelSid                                = 66
	WinMediumLabelSid                             = 67
	WinHighLabelSid                               = 68
	WinSystemLabelSid                             = 69
	WinWriteRestrictedCodeSid                     = 70
	WinCreatorOwnerRightsSid                      = 71
	WinCacheablePrincipalsGroupSid                = 72
	WinNonCacheablePrincipalsGroupSid             = 73
	WinEnterpriseReadonlyControllersSid           = 74
	WinAccountReadonlyControllersSid              = 75
	WinBuiltinEventLogReadersGroup                = 76
	WinNewEnterpriseReadonlyControllersSid        = 77
	WinBuiltinCertSvcDComAccessGroup              = 78
	WinMediumPlusLabelSid                         = 79
	WinLocalLogonSid                              = 80
	WinConsoleLogonSid                            = 81
	WinThisOrganizationCertificateSid             = 82
	WinApplicationPackageAuthoritySid             = 83
	WinBuiltinAnyPackageSid                       = 84
	WinCapabilityInternetClientSid                = 85
	WinCapabilityInternetClientServerSid          = 86
	WinCapabilityPrivateNetworkClientServerSid    = 87
	WinCapabilityPicturesLibrarySid               = 88
	WinCapabilityVideosLibrarySid                 = 89
	WinCapabilityMusicLibrarySid                  = 90
	WinCapabilityDocumentsLibrarySid              = 91
	WinCapabilitySharedUserCertificatesSid        = 92
	WinCapabilityEnterpriseAuthenticationSid      = 93
	WinCapabilityRemovableStorageSid              = 94
	WinBuiltinRDSRemoteAccessServersSid           = 95
	WinBuiltinRDSEndpointServersSid               = 96
	WinBuiltinRDSManagementServersSid             = 97
	WinUserModeDriversSid                         = 98
	WinBuiltinHyperVAdminsSid                     = 99
	WinAccountCloneableControllersSid             = 100
	WinBuiltinAccessControlAssistanceOperatorsSid = 101
	WinBuiltinRemoteManagementUsersSid            = 102
	WinAuthenticationAuthorityAssertedSid         = 103
	WinAuthenticationServiceAssertedSid           = 104
	WinLocalAccountSid                            = 105
	WinLocalAccountAndAdministratorSid            = 106
	WinAccountProtectedUsersSid                   = 107
	WinCapabilityAppointmentsSid                  = 108
	WinCapabilityContactsSid                      = 109
	WinAccountDefaultSystemManagedSid             = 110
	WinBuiltinDefaultSystemManagedGroupSid        = 111
	WinBuiltinStorageReplicaAdminsSid             = 112
	WinAccountKeyAdminsSid                        = 113
	WinAccountEnterpriseKeyAdminsSid              = 114
	WinAuthenticationKeyTrustSid                  = 115
	WinAuthenticationKeyPropertyMFASid            = 116
	WinAuthenticationKeyPropertyAttestationSid    = 117
	WinAuthenticationFreshKeyAuthSid              = 118
	WinBuiltinDeviceOwnersSid                     = 119
)

// Creates a SID for a well-known predefined alias, generally using the constants of the form
// Win*Sid, for the local machine.
func CreateWellKnownSid(sidType WELL_KNOWN_SID_TYPE) (*SID, error) {
	return CreateWellKnownDomainSid(sidType, nil)
}

// Creates a SID for a well-known predefined alias, generally using the constants of the form
// Win*Sid, for the domain specified by the domainSid parameter.
func CreateWellKnownDomainSid(sidType WELL_KNOWN_SID_TYPE, domainSid *SID) (*SID, error) {
	n := uint32(50)
	for {
		b := make([]byte, n)
		sid := (*SID)(unsafe.Pointer(&b[0]))
		err := createWellKnownSid(sidType, domainSid, sid, &n)
		if err == nil {
			return sid, nil
		}
		if err != ERROR_INSUFFICIENT_BUFFER {
			return nil, err
		}
		if n <= uint32(len(b)) {
			return nil, err
		}
	}
}

const (
	// do not reorder
	TOKEN_ASSIGN_PRIMARY = 1 << iota
	TOKEN_DUPLICATE
	TOKEN_IMPERSONATE
	TOKEN_QUERY
	TOKEN_QUERY_SOURCE
	TOKEN_ADJUST_PRIVILEGES
	TOKEN_ADJUST_GROUPS
	TOKEN_ADJUST_DEFAULT
	TOKEN_ADJUST_SESSIONID

	TOKEN_ALL_ACCESS = STANDARD_RIGHTS_REQUIRED |
		TOKEN_ASSIGN_PRIMARY |
		TOKEN_DUPLICATE |
		TOKEN_IMPERSONATE |
		TOKEN_QUERY |
		TOKEN_QUERY_SOURCE |
		TOKEN_ADJUST_PRIVILEGES |
		TOKEN_ADJUST_GROUPS |
		TOKEN_ADJUST_DEFAULT |
		TOKEN_ADJUST_SESSIONID
	TOKEN_READ  = STANDARD_RIGHTS_READ | TOKEN_QUERY
	TOKEN_WRITE = STANDARD_RIGHTS_WRITE |
		TOKEN_ADJUST_PRIVILEGES |
		TOKEN_ADJUST_GROUPS |
		TOKEN_ADJUST_DEFAULT
	TOKEN_EXECUTE = STANDARD_RIGHTS_EXECUTE
)

const (
	// do not reorder
	TokenUser = 1 + iota
	TokenGroups
	TokenPrivileges
	TokenOwner
	TokenPrimaryGroup
	TokenDefaultDacl
	TokenSource
	TokenType
	TokenImpersonationLevel
	TokenStatistics
	TokenRestrictedSids
	TokenSessionId
	TokenGroupsAndPrivileges
	TokenSessionReference
	TokenSandBoxInert
	TokenAuditPolicy
	TokenOrigin
	TokenElevationType
	TokenLinkedToken
	TokenElevation
	TokenHasRestrictions
	TokenAccessInformation
	TokenVirtualizationAllowed
	TokenVirtualizationEnabled
	TokenIntegrityLevel
	TokenUIAccess
	TokenMandatoryPolicy
	TokenLogonSid
	MaxTokenInfoClass
)

// Group attributes inside of Tokengroups.Groups[i].Attributes
const (
	SE_GROUP_MANDATORY          = 0x00000001
	SE_GROUP_ENABLED_BY_DEFAULT = 0x00000002
	SE_GROUP_ENABLED            = 0x00000004
	SE_GROUP_OWNER              = 0x00000008
	SE_GROUP_USE_FOR_DENY_ONLY  = 0x00000010
	SE_GROUP_INTEGRITY          = 0x00000020
	SE_GROUP_INTEGRITY_ENABLED  = 0x00000040
	SE_GROUP_LOGON_ID           = 0xC0000000
	SE_GROUP_RESOURCE           = 0x20000000
	SE_GROUP_VALID_ATTRIBUTES   = SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT | SE_GROUP_ENABLED | SE_GROUP_OWNER | SE_GROUP_USE_FOR_DENY_ONLY | SE_GROUP_LOGON_ID | SE_GROUP_RESOURCE | SE_GROUP_INTEGRITY | SE_GROUP_INTEGRITY_ENABLED
)

// Privilege attributes
const (
	SE_PRIVILEGE_ENABLED_BY_DEFAULT = 0x00000001
	SE_PRIVILEGE_ENABLED            = 0x00000002
	SE_PRIVILEGE_REMOVED            = 0x00000004
	SE_PRIVILEGE_USED_FOR_ACCESS    = 0x80000000
	SE_PRIVILEGE_VALID_ATTRIBUTES   = SE_PRIVILEGE_ENABLED_BY_DEFAULT | SE_PRIVILEGE_ENABLED | SE_PRIVILEGE_REMOVED | SE_PRIVILEGE_USED_FOR_ACCESS
)

// Token types
const (
	TokenPrimary       = 1
	TokenImpersonation = 2
)

// Impersonation levels
const (
	SecurityAnonymous      = 0
	SecurityIdentification = 1
	SecurityImpersonation  = 2
	SecurityDelegation     = 3
)

type LUID struct {
	LowPart  uint32
	HighPart int32
}

type LUIDAndAttributes struct {
	Luid       LUID
	Attributes uint32
}

type SIDAndAttributes struct {
	Sid        *SID
	Attributes uint32
}

type Tokenuser struct {
	User SIDAndAttributes
}

type Tokenprimarygroup struct {
	PrimaryGroup *SID
}

type Tokengroups struct {
	GroupCount uint32
	Groups     [1]SIDAndAttributes // Use AllGroups() for iterating.
}

// AllGroups returns a slice that can be used to iterate over the groups in g.
func (g *Tokengroups) AllGroups() []SIDAndAttributes {
	return (*[(1 << 28) - 1]SIDAndAttributes)(unsafe.Pointer(&g.Groups[0]))[:g.GroupCount:g.GroupCount]
}

type Tokenprivileges struct {
	PrivilegeCount uint32
	Privileges     [1]LUIDAndAttributes // Use AllPrivileges() for iterating.
}

// AllPrivileges returns a slice that can be used to iterate over the privileges in p.
func (p *Tokenprivileges) AllPrivileges() []LUIDAndAttributes {
	return (*[(1 << 27) - 1]LUIDAndAttributes)(unsafe.Pointer(&p.Privileges[0]))[:p.PrivilegeCount:p.PrivilegeCount]
}

type Tokenmandatorylabel struct {
	Label SIDAndAttributes
}

func (tml *Tokenmandatorylabel) Size() uint32 {
	return uint32(unsafe.Sizeof(Tokenmandatorylabel{})) + GetLengthSid(tml.Label.Sid)
}

// Authorization Functions
//sys	checkTokenMembership(tokenHandle Token, sidToCheck *SID, isMember *int32) (err error) = advapi32.CheckTokenMembership
//sys	isTokenRestricted(tokenHandle Token) (ret bool, err error) [!failretval] = advapi32.IsTokenRestricted
//sys	OpenProcessToken(process Handle, access uint32, token *Token) (err error) = advapi32.OpenProcessToken
//sys	OpenThreadToken(thread Handle, access uint32, openAsSelf bool, token *Token) (err error) = advapi32.OpenThreadToken
//sys	ImpersonateSelf(impersonationlevel uint32) (err error) = advapi32.ImpersonateSelf
//sys	RevertToSelf() (err error) = advapi32.RevertToSelf
//sys	SetThreadToken(thread *Handle, token Token) (err error) = advapi32.SetThreadToken
//sys	LookupPrivilegeValue(systemname *uint16, name *uint16, luid *LUID) (err error) = advapi32.LookupPrivilegeValueW
//sys	AdjustTokenPrivileges(token Token, disableAllPrivileges bool, newstate *Tokenprivileges, buflen uint32, prevstate *Tokenprivileges, returnlen *uint32) (err error) = advapi32.AdjustTokenPrivileges
//sys	AdjustTokenGroups(token Token, resetToDefault bool, newstate *Tokengroups, buflen uint32, prevstate *Tokengroups, returnlen *uint32) (err error) = advapi32.AdjustTokenGroups
//sys	GetTokenInformation(token Token, infoClass uint32, info *byte, infoLen uint32, returnedLen *uint32) (err error) = advapi32.GetTokenInformation
//sys	SetTokenInformation(token Token, infoClass uint32, info *byte, infoLen uint32) (err error) = advapi32.SetTokenInformation
//sys	DuplicateTokenEx(existingToken Token, desiredAccess uint32, tokenAttributes *SecurityAttributes, impersonationLevel uint32, tokenType uint32, newToken *Token) (err error) = advapi32.DuplicateTokenEx
//sys	GetUserProfileDirectory(t Token, dir *uint16, dirLen *uint32) (err error) = userenv.GetUserProfileDirectoryW
//sys	getSystemDirectory(dir *uint16, dirLen uint32) (len uint32, err error) = kernel32.GetSystemDirectoryW
//sys	getWindowsDirectory(dir *uint16, dirLen uint32) (len uint32, err error) = kernel32.GetWindowsDirectoryW
//sys	getSystemWindowsDirectory(dir *uint16, dirLen uint32) (len uint32, err error) = kernel32.GetSystemWindowsDirectoryW

// An access token contains the security information for a logon session.
// The system creates an access token when a user logs on, and every
// process executed on behalf of the user has a copy of the token.
// The token identifies the user, the user's groups, and the user's
// privileges. The system uses the token to control access to securable
// objects and to control the ability of the user to perform various
// system-related operations on the local computer.
type Token Handle

// OpenCurrentProcessToken opens an access token associated with current
// process with TOKEN_QUERY access. It is a real token that needs to be closed.
//
// Deprecated: Explicitly call OpenProcessToken(CurrentProcess(), ...)
// with the desired access instead, or use GetCurrentProcessToken for a
// TOKEN_QUERY token.
func OpenCurrentProcessToken() (Token, error) {
	var token Token
	err := OpenProcessToken(CurrentProcess(), TOKEN_QUERY, &token)
	return token, err
}

// GetCurrentProcessToken returns the access token associated with
// the current process. It is a pseudo token that does not need
// to be closed.
func GetCurrentProcessToken() Token {
	return Token(^uintptr(4 - 1))
}

// GetCurrentThreadToken return the access token associated with
// the current thread. It is a pseudo token that does not need
// to be closed.
func GetCurrentThreadToken() Token {
	return Token(^uintptr(5 - 1))
}

// GetCurrentThreadEffectiveToken returns the effective access token
// associated with the current thread. It is a pseudo token that does
// not need to be closed.
func GetCurrentThreadEffectiveToken() Token {
	return Token(^uintptr(6 - 1))
}

// Close releases access to access token.
func (t Token) Close() error {
	return CloseHandle(Handle(t))
}

// getInfo retrieves a specified type of information about an access token.
func (t Token) getInfo(class uint32, initSize int) (unsafe.Pointer, error) {
	n := uint32(initSize)
	for {
		b := make([]byte, n)
		e := GetTokenInformation(t, class, &b[0], uint32(len(b)), &n)
		if e == nil {
			return unsafe.Pointer(&b[0]), nil
		}
		if e != ERROR_INSUFFICIENT_BUFFER {
			return nil, e
		}
		if n <= uint32(len(b)) {
			return nil, e
		}
	}
}

// GetTokenUser retrieves access token t user account information.
func (t Token) GetTokenUser() (*Tokenuser, error) {
	i, e := t.getInfo(TokenUser, 50)
	if e != nil {
		return nil, e
	}
	return (*Tokenuser)(i), nil
}

// GetTokenGroups retrieves group accounts associated with access token t.
func (t Token) GetTokenGroups() (*Tokengroups, error) {
	i, e := t.getInfo(TokenGroups, 50)
	if e != nil {
		return nil, e
	}
	return (*Tokengroups)(i), nil
}

// GetTokenPrimaryGroup retrieves access token t primary group information.
// A pointer to a SID structure representing a group that will become
// the primary group of any objects created by a process using this access token.
func (t Token) GetTokenPrimaryGroup() (*Tokenprimarygroup, error) {
	i, e := t.getInfo(TokenPrimaryGroup, 50)
	if e != nil {
		return nil, e
	}
	return (*Tokenprimarygroup)(i), nil
}

// GetUserProfileDirectory retrieves path to the
// root directory of the access token t user's profile.
func (t Token) GetUserProfileDirectory() (string, error) {
	n := uint32(100)
	for {
		b := make([]uint16, n)
		e := GetUserProfileDirectory(t, &b[0], &n)
		if e == nil {
			return UTF16ToString(b), nil
		}
		if e != ERROR_INSUFFICIENT_BUFFER {
			return "", e
		}
		if n <= uint32(len(b)) {
			return "", e
		}
	}
}

// IsElevated returns whether the current token is elevated from a UAC perspective.
func (token Token) IsElevated() bool {
	var isElevated uint32
	var outLen uint32
	err := GetTokenInformation(token, TokenElevation, (*byte)(unsafe.Pointer(&isElevated)), uint32(unsafe.Sizeof(isElevated)), &outLen)
	if err != nil {
		return false
	}
	return outLen == uint32(unsafe.Sizeof(isElevated)) && isElevated != 0
}

// GetLinkedToken returns the linked token, which may be an elevated UAC token.
func (token Token) GetLinkedToken() (Token, error) {
	var linkedToken Token
	var outLen uint32
	err := GetTokenInformation(token, TokenLinkedToken, (*byte)(unsafe.Pointer(&linkedToken)), uint32(unsafe.Sizeof(linkedToken)), &outLen)
	if err != nil {
		return Token(0), err
	}
	return linkedToken, nil
}

// GetSystemDirectory retrieves the path to current location of the system
// directory, which is typically, though not always, `C:\Windows\System32`.
func GetSystemDirectory() (string, error) {
	n := uint32(MAX_PATH)
	for {
		b := make([]uint16, n)
		l, e := getSystemDirectory(&b[0], n)
		if e != nil {
			return "", e
		}
		if l <= n {
			return UTF16ToString(b[:l]), nil
		}
		n = l
	}
}

// GetWindowsDirectory retrieves the path to current location of the Windows
// directory, which is typically, though not always, `C:\Windows`. This may
// be a private user directory in the case that the application is running
// under a terminal server.
func GetWindowsDirectory() (string, error) {
	n := uint32(MAX_PATH)
	for {
		b := make([]uint16, n)
		l, e := getWindowsDirectory(&b[0], n)
		if e != nil {
			return "", e
		}
		if l <= n {
			return UTF16ToString(b[:l]), nil
		}
		n = l
	}
}

// GetSystemWindowsDirectory retrieves the path to current location of the
// Windows directory, which is typically, though not always, `C:\Windows`.
func GetSystemWindowsDirectory() (string, error) {
	n := uint32(MAX_PATH)
	for {
		b := make([]uint16, n)
		l, e := getSystemWindowsDirectory(&b[0], n)
		if e != nil {
			return "", e
		}
		if l <= n {
			return UTF16ToString(b[:l]), nil
		}
		n = l
	}
}

// IsMember reports whether the access token t is a member of the provided SID.
func (t Token) IsMember(sid *SID) (bool, error) {
	var b int32
	if e := checkTokenMembership(t, sid, &b); e != nil {
		return false, e
	}
	return b != 0, nil
}

// IsRestricted reports whether the access token t is a restricted token.
func (t Token) IsRestricted() (isRestricted bool, err error) {
	isRestricted, err = isTokenRestricted(t)
	if !isRestricted && err == syscall.EINVAL {
		// If err is EINVAL, this returned ERROR_SUCCESS indicating a non-restricted token.
		err = nil
	}
	return
}

const (
	WTS_CONSOLE_CONNECT        = 0x1
	WTS_CONSOLE_DISCONNECT     = 0x2
	WTS_REMOTE_CONNECT         = 0x3
	WTS_REMOTE_DISCONNECT      = 0x4
	WTS_SESSION_LOGON          = 0x5
	WTS_SESSION_LOGOFF         = 0x6
	WTS_SESSION_LOCK           = 0x7
	WTS_SESSION_UNLOCK         = 0x8
	WTS_SESSION_REMOTE_CONTROL = 0x9
	WTS_SESSION_CREATE         = 0xa
	WTS_SESSION_TERMINATE      = 0xb
)

const (
	WTSActive       = 0
	WTSConnected    = 1
	WTSConnectQuery = 2
	WTSShadow       = 3
	WTSDisconnected = 4
	WTSIdle         = 5
	WTSListen       = 6
	WTSReset        = 7
	WTSDown         = 8
	WTSInit         = 9
)

type WTSSESSION_NOTIFICATION struct {
	Size      uint32
	SessionID uint32
}

type WTS_SESSION_INFO struct {
	SessionID         uint32
	WindowStationName *uint16
	State             uint32
}

//sys WTSQueryUserToken(session uint32, token *Token) (err error) = wtsapi32.WTSQueryUserToken
//sys WTSEnumerateSessions(handle Handle, reserved uint32, version uint32, sessions **WTS_SESSION_INFO, count *uint32) (err error) = wtsapi32.WTSEnumerateSessionsW
//sys WTSFreeMemory(ptr uintptr) = wtsapi32.WTSFreeMemory
//sys WTSGetActiveConsoleSessionId() (sessionID uint32)

type ACL struct {
	aclRevision byte
	sbz1        byte
	aclSize     uint16
	aceCount    uint16
	sbz2        uint16
}

type SECURITY_DESCRIPTOR struct {
	revision byte
	sbz1     byte
	control  SECURITY_DESCRIPTOR_CONTROL
	owner    *SID
	group    *SID
	sacl     *ACL
	dacl     *ACL
}

type SECURITY_QUALITY_OF_SERVICE struct {
	Length              uint32
	ImpersonationLevel  uint32
	ContextTrackingMode byte
	EffectiveOnly       byte
}

// Constants for the ContextTrackingMode field of SECURITY_QUALITY_OF_SERVICE.
const (
	SECURITY_STATIC_TRACKING  = 0
	SECURITY_DYNAMIC_TRACKING = 1
)

type SecurityAttributes struct {
	Length             uint32
	SecurityDescriptor *SECURITY_DESCRIPTOR
	InheritHandle      uint32
}

type SE_OBJECT_TYPE uint32

// Constants for type SE_OBJECT_TYPE
const (
	SE_UNKNOWN_OBJECT_TYPE     = 0
	SE_FILE_OBJECT             = 1
	SE_SERVICE                 = 2
	SE_PRINTER                 = 3
	SE_REGISTRY_KEY            = 4
	SE_LMSHARE                 = 5
	SE_KERNEL_OBJECT           = 6
	SE_WINDOW_OBJECT           = 7
	SE_DS_OBJECT               = 8
	SE_DS_OBJECT_ALL           = 9
	SE_PROVIDER_DEFINED_OBJECT = 10
	SE_WMIGUID_OBJECT          = 11
	SE_REGISTRY_WOW64_32KEY    = 12
	SE_REGISTRY_WOW64_64KEY    = 13
)

type SECURITY_INFORMATION uint32

// Constants for type SECURITY_INFORMATION
const (
	OWNER_SECURITY_INFORMATION            = 0x00000001
	GROUP_SECURITY_INFORMATION            = 0x00000002
	DACL_SECURITY_INFORMATION             = 0x00000004
	SACL_SECURITY_INFORMATION             = 0x00000008
	LABEL_SECURITY_INFORMATION            = 0x00000010
	ATTRIBUTE_SECURITY_INFORMATION        = 0x00000020
	SCOPE_SECURITY_INFORMATION            = 0x00000040
	BACKUP_SECURITY_INFORMATION           = 0x00010000
	PROTECTED_DACL_SECURITY_INFORMATION   = 0x80000000
	PROTECTED_SACL_SECURITY_INFORMATION   = 0x40000000
	UNPROTECTED_DACL_SECURITY_INFORMATION = 0x20000000
	UNPROTECTED_SACL_SECURITY_INFORMATION = 0x10000000
)

type SECURITY_DESCRIPTOR_CONTROL uint16

// Constants for type SECURITY_DESCRIPTOR_CONTROL
const (
	SE_OWNER_DEFAULTED       = 0x0001
	SE_GROUP_DEFAULTED       = 0x0002
	SE_DACL_PRESENT          = 0x0004
	SE_DACL_DEFAULTED        = 0x0008
	SE_SACL_PRESENT          = 0x0010
	SE_SACL_DEFAULTED        = 0x0020
	SE_DACL_AUTO_INHERIT_REQ = 0x0100
	SE_SACL_AUTO_INHERIT_REQ = 0x0200
	SE_DACL_AUTO_INHERITED   = 0x0400
	SE_SACL_AUTO_INHERITED   = 0x0800
	SE_DACL_PROTECTED        = 0x1000
	SE_SACL_PROTECTED        = 0x2000
	SE_RM_CONTROL_VALID      = 0x4000
	SE_SELF_RELATIVE         = 0x8000
)

type ACCESS_MASK uint32

// Constants for type ACCESS_MASK
const (
	DELETE                   = 0x00010000
	READ_CONTROL             = 0x00020000
	WRITE_DAC                = 0x00040000
	WRITE_OWNER              = 0x00080000
	SYNCHRONIZE              = 0x00100000
	STANDARD_RIGHTS_REQUIRED = 0x000F0000
	STANDARD_RIGHTS_READ     = READ_CONTROL
	STANDARD_RIGHTS_WRITE    = READ_CONTROL
	STANDARD_RIGHTS_EXECUTE  = READ_CONTROL
	STANDARD_RIGHTS_ALL      = 0x001F0000
	SPECIFIC_RIGHTS_ALL      = 0x0000FFFF
	ACCESS_SYSTEM_SECURITY   = 0x01000000
	MAXIMUM_ALLOWED          = 0x02000000
	GENERIC_READ             = 0x80000000
	GENERIC_WRITE            = 0x40000000
	GENERIC_EXECUTE          = 0x20000000
	GENERIC_ALL              = 0x10000000
)

type ACCESS_MODE uint32

// Constants for type ACCESS_MODE
const (
	NOT_USED_ACCESS   = 0
	GRANT_ACCESS      = 1
	SET_ACCESS        = 2
	DENY_ACCESS       = 3
	REVOKE_ACCESS     = 4
	SET_AUDIT_SUCCESS = 5
	SET_AUDIT_FAILURE = 6
)

// Constants for AceFlags and Inheritance fields
const (
	NO_INHERITANCE                     = 0x0
	SUB_OBJECTS_ONLY_INHERIT           = 0x1
	SUB_CONTAINERS_ONLY_INHERIT        = 0x2
	SUB_CONTAINERS_AND_OBJECTS_INHERIT = 0x3
	INHERIT_NO_PROPAGATE               = 0x4
	INHERIT_ONLY                       = 0x8
	INHERITED_ACCESS_ENTRY             = 0x10
	INHERITED_PARENT                   = 0x10000000
	INHERITED_GRANDPARENT              = 0x20000000
	OBJECT_INHERIT_ACE                 = 0x1
	CONTAINER_INHERIT_ACE              = 0x2
	NO_PROPAGATE_INHERIT_ACE           = 0x4
	INHERIT_ONLY_ACE                   = 0x8
	INHERITED_ACE                      = 0x10
	VALID_INHERIT_FLAGS                = 0x1F
)

type MULTIPLE_TRUSTEE_OPERATION uint32

// Constants for MULTIPLE_TRUSTEE_OPERATION
const (
	NO_MULTIPLE_TRUSTEE    = 0
	TRUSTEE_IS_IMPERSONATE = 1
)

type TRUSTEE_FORM uint32

// Constants for TRUSTEE_FORM
const (
	TRUSTEE_IS_SID              = 0
	TRUSTEE_IS_NAME             = 1
	TRUSTEE_BAD_FORM            = 2
	TRUSTEE_IS_OBJECTS_AND_SID  = 3
	TRUSTEE_IS_OBJECTS_AND_NAME = 4
)

type TRUSTEE_TYPE uint32

// Constants for TRUSTEE_TYPE
const (
	TRUSTEE_IS_UNKNOWN          = 0
	TRUSTEE_IS_USER             = 1
	TRUSTEE_IS_GROUP            = 2
	TRUSTEE_IS_DOMAIN           = 3
	TRUSTEE_IS_ALIAS            = 4
	TRUSTEE_IS_WELL_KNOWN_GROUP = 5
	TRUSTEE_IS_DELETED          = 6
	TRUSTEE_IS_INVALID          = 7
	TRUSTEE_IS_COMPUTER         = 8
)

// Constants for ObjectsPresent field
const (
	ACE_OBJECT_TYPE_PRESENT           = 0x1
	ACE_INHERITED_OBJECT_TYPE_PRESENT = 0x2
)

type EXPLICIT_ACCESS struct {
	AccessPermissions ACCESS_MASK
	AccessMode        ACCESS_MODE
	Inheritance       uint32
	Trustee           TRUSTEE
}

// This type is the union inside of TRUSTEE and must be created using one of the TrusteeValueFrom* functions.
type TrusteeValue uintptr

func TrusteeValueFromString(str string) TrusteeValue {
	return TrusteeValue(unsafe.Pointer(StringToUTF16Ptr(str)))
}
func TrusteeValueFromSID(sid *SID) TrusteeValue {
	return TrusteeValue(unsafe.Pointer(sid))
}
func TrusteeValueFromObjectsAndSid(objectsAndSid *OBJECTS_AND_SID) TrusteeValue {
	return TrusteeValue(unsafe.Pointer(objectsAndSid))
}
func TrusteeValueFromObjectsAndName(objectsAndName *OBJECTS_AND_NAME) TrusteeValue {
	return TrusteeValue(unsafe.Pointer(objectsAndName))
}

type TRUSTEE struct {
	MultipleTrustee          *TRUSTEE
	MultipleTrusteeOperation MULTIPLE_TRUSTEE_OPERATION
	TrusteeForm              TRUSTEE_FORM
	TrusteeType              TRUSTEE_TYPE
	TrusteeValue             TrusteeValue
}

type OBJECTS_AND_SID struct {
	ObjectsPresent          uint32
	ObjectTypeGuid          GUID
	InheritedObjectTypeGuid GUID
	Sid                     *SID
}

type OBJECTS_AND_NAME struct {
	ObjectsPresent          uint32
	ObjectType              SE_OBJECT_TYPE
	ObjectTypeName          *uint16
	InheritedObjectTypeName *uint16
	Name                    *uint16
}

//sys	getSecurityInfo(handle Handle, objectType SE_OBJECT_TYPE, securityInformation SECURITY_INFORMATION, owner **SID, group **SID, dacl **ACL, sacl **ACL, sd **SECURITY_DESCRIPTOR) (ret error) = advapi32.GetSecurityInfo
//sys	SetSecurityInfo(handle Handle, objectType SE_OBJECT_TYPE, securityInformation SECURITY_INFORMATION, owner *SID, group *SID, dacl *ACL, sacl *ACL) (ret error) = advapi32.SetSecurityInfo
//sys	getNamedSecurityInfo(objectName string, objectType SE_OBJECT_TYPE, securityInformation SECURITY_INFORMATION, owner **SID, group **SID, dacl **ACL, sacl **ACL, sd **SECURITY_DESCRIPTOR) (ret error) = advapi32.GetNamedSecurityInfoW
//sys	SetNamedSecurityInfo(objectName string, objectType SE_OBJECT_TYPE, securityInformation SECURITY_INFORMATION, owner *SID, group *SID, dacl *ACL, sacl *ACL) (ret error) = advapi32.SetNamedSecurityInfoW
//sys	SetKernelObjectSecurity(handle Handle, securityInformation SECURITY_INFORMATION, securityDescriptor *SECURITY_DESCRIPTOR) (err error) = advapi32.SetKernelObjectSecurity

//sys	buildSecurityDescriptor(owner *TRUSTEE, group *TRUSTEE, countAccessEntries uint32, accessEntries *EXPLICIT_ACCESS, countAuditEntries uint32, auditEntries *EXPLICIT_ACCESS, oldSecurityDescriptor *SECURITY_DESCRIPTOR, sizeNewSecurityDescriptor *uint32, newSecurityDescriptor **SECURITY_DESCRIPTOR) (ret error) = advapi32.BuildSecurityDescriptorW
//sys	initializeSecurityDescriptor(absoluteSD *SECURITY_DESCRIPTOR, revision uint32) (err error) = advapi32.InitializeSecurityDescriptor

//sys	getSecurityDescriptorControl(sd *SECURITY_DESCRIPTOR, control *SECURITY_DESCRIPTOR_CONTROL, revision *uint32) (err error) = advapi32.GetSecurityDescriptorControl
//sys	getSecurityDescriptorDacl(sd *SECURITY_DESCRIPTOR, daclPresent *bool, dacl **ACL, daclDefaulted *bool) (err error) = advapi32.GetSecurityDescriptorDacl
//sys	getSecurityDescriptorSacl(sd *SECURITY_DESCRIPTOR, saclPresent *bool, sacl **ACL, saclDefaulted *bool) (err error) = advapi32.GetSecurityDescriptorSacl
//sys	getSecurityDescriptorOwner(sd *SECURITY_DESCRIPTOR, owner **SID, ownerDefaulted *bool) (err error) = advapi32.GetSecurityDescriptorOwner
//sys	getSecurityDescriptorGroup(sd *SECURITY_DESCRIPTOR, group **SID, groupDefaulted *bool) (err error) = advapi32.GetSecurityDescriptorGroup
//sys	getSecurityDescriptorLength(sd *SECURITY_DESCRIPTOR) (len uint32) = advapi32.GetSecurityDescriptorLength
//sys	getSecurityDescriptorRMControl(sd *SECURITY_DESCRIPTOR, rmControl *uint8) (ret error) [failretval!=0] = advapi32.GetSecurityDescriptorRMControl
//sys	isValidSecurityDescriptor(sd *SECURITY_DESCRIPTOR) (isValid bool) = advapi32.IsValidSecurityDescriptor

//sys	setSecurityDescriptorControl(sd *SECURITY_DESCRIPTOR, controlBitsOfInterest SECURITY_DESCRIPTOR_CONTROL, controlBitsToSet SECURITY_DESCRIPTOR_CONTROL) (err error) = advapi32.SetSecurityDescriptorControl
//sys	setSecurityDescriptorDacl(sd *SECURITY_DESCRIPTOR, daclPresent bool, dacl *ACL, daclDefaulted bool) (err error) = advapi32.SetSecurityDescriptorDacl
//sys	setSecurityDescriptorSacl(sd *SECURITY_DESCRIPTOR, saclPresent bool, sacl *ACL, saclDefaulted bool) (err error) = advapi32.SetSecurityDescriptorSacl
//sys	setSecurityDescriptorOwner(sd *SECURITY_DESCRIPTOR, owner *SID, ownerDefaulted bool) (err error) = advapi32.SetSecurityDescriptorOwner
//sys	setSecurityDescriptorGroup(sd *SECURITY_DESCRIPTOR, group *SID, groupDefaulted bool) (err error) = advapi32.SetSecurityDescriptorGroup
//sys	setSecurityDescriptorRMControl(sd *SECURITY_DESCRIPTOR, rmControl *uint8) = advapi32.SetSecurityDescriptorRMControl

//sys	convertStringSecurityDescriptorToSecurityDescriptor(str string, revision uint32, sd **SECURITY_DESCRIPTOR, size *uint32) (err error) = advapi32.ConvertStringSecurityDescriptorToSecurityDescriptorW
//sys	convertSecurityDescriptorToStringSecurityDescriptor(sd *SECURITY_DESCRIPTOR, revision uint32, securityInformation SECURITY_INFORMATION, str **uint16, strLen *uint32) (err error) = advapi32.ConvertSecurityDescriptorToStringSecurityDescriptorW

//sys	makeAbsoluteSD(selfRelativeSD *SECURITY_DESCRIPTOR, absoluteSD *SECURITY_DESCRIPTOR, absoluteSDSize *uint32, dacl *ACL, daclSize *uint32, sacl *ACL, saclSize *uint32, owner *SID, ownerSize *uint32, group *SID, groupSize *uint32) (err error) = advapi32.MakeAbsoluteSD
//sys	makeSelfRelativeSD(absoluteSD *SECURITY_DESCRIPTOR, selfRelativeSD *SECURITY_DESCRIPTOR, selfRelativeSDSize *uint32) (err error) = advapi32.MakeSelfRelativeSD

//sys	setEntriesInAcl(countExplicitEntries uint32, explicitEntries *EXPLICIT_ACCESS, oldACL *ACL, newACL **ACL) (ret error) = advapi32.SetEntriesInAclW

// Control returns the security descriptor control bits.
func (sd *SECURITY_DESCRIPTOR) Control() (control SECURITY_DESCRIPTOR_CONTROL, revision uint32, err error) {
	err = getSecurityDescriptorControl(sd, &control, &revision)
	return
}

// SetControl sets the security descriptor control bits.
func (sd *SECURITY_DESCRIPTOR) SetControl(controlBitsOfInterest SECURITY_DESCRIPTOR_CONTROL, controlBitsToSet SECURITY_DESCRIPTOR_CONTROL) error {
	return setSecurityDescriptorControl(sd, controlBitsOfInterest, controlBitsToSet)
}

// RMControl returns the security descriptor resource manager control bits.
func (sd *SECURITY_DESCRIPTOR) RMControl() (control uint8, err error) {
	err = getSecurityDescriptorRMControl(sd, &control)
	return
}

// SetRMControl sets the security descriptor resource manager control bits.
func (sd *SECURITY_DESCRIPTOR) SetRMControl(rmControl uint8) {
	setSecurityDescriptorRMControl(sd, &rmControl)
}

// DACL returns the security descriptor DACL and whether it was defaulted. The dacl return value may be nil
// if a DACL exists but is an "empty DACL", meaning fully permissive. If the DACL does not exist, err returns
// ERROR_OBJECT_NOT_FOUND.
func (sd *SECURITY_DESCRIPTOR) DACL() (dacl *ACL, defaulted bool, err error) {
	var present bool
	err = getSecurityDescriptorDacl(sd, &present, &dacl, &defaulted)
	if !present {
		err = ERROR_OBJECT_NOT_FOUND
	}
	return
}

// SetDACL sets the absolute security descriptor DACL.
func (absoluteSD *SECURITY_DESCRIPTOR) SetDACL(dacl *ACL, present, defaulted bool) error {
	return setSecurityDescriptorDacl(absoluteSD, present, dacl, defaulted)
}

// SACL returns the security descriptor SACL and whether it was defaulted. The sacl return value may be nil
// if a SACL exists but is an "empty SACL", meaning fully permissive. If the SACL does not exist, err returns
// ERROR_OBJECT_NOT_FOUND.
func (sd *SECURITY_DESCRIPTOR) SACL() (sacl *ACL, defaulted bool, err error) {
	var present bool
	err = getSecurityDescriptorSacl(sd, &present, &sacl, &defaulted)
	if !present {
		err = ERROR_OBJECT_NOT_FOUND
	}
	return
}

// SetSACL sets the absolute security descriptor SACL.
func (absoluteSD *SECURITY_DESCRIPTOR) SetSACL(sacl *ACL, present, defaulted bool) error {
	return setSecurityDescriptorSacl(absoluteSD, present, sacl, defaulted)
}

// Owner returns the security descriptor owner and whether it was defaulted.
func (sd *SECURITY_DESCRIPTOR) Owner() (owner *SID, defaulted bool, err error) {
	err = getSecurityDescriptorOwner(sd, &owner, &defaulted)
	return
}

// SetOwner sets the absolute security descriptor owner.
func (absoluteSD *SECURITY_DESCRIPTOR) SetOwner(owner *SID, defaulted bool) error {
	return setSecurityDescriptorOwner(absoluteSD, owner, defaulted)
}

// Group returns the security descriptor group and whether it was defaulted.
func (sd *SECURITY_DESCRIPTOR) Group() (group *SID, defaulted bool, err error) {
	err = getSecurityDescriptorGroup(sd, &group, &defaulted)
	return
}

// SetGroup sets the absolute security descriptor owner.
func (absoluteSD *SECURITY_DESCRIPTOR) SetGroup(group *SID, defaulted bool) error {
	return setSecurityDescriptorGroup(absoluteSD, group, defaulted)
}

// Length returns the length of the security descriptor.
func (sd *SECURITY_DESCRIPTOR) Length() uint32 {
	return getSecurityDescriptorLength(sd)
}

// IsValid returns whether the security descriptor is valid.
func (sd *SECURITY_DESCRIPTOR) IsValid() bool {
	return isValidSecurityDescriptor(sd)
}

// String returns the SDDL form of the security descriptor, with a function signature that can be
// used with %v formatting directives.
func (sd *SECURITY_DESCRIPTOR) String() string {
	var sddl *uint16
	err := convertSecurityDescriptorToStringSecurityDescriptor(sd, 1, 0xff, &sddl, nil)
	if err != nil {
		return ""
	}
	defer LocalFree(Handle(unsafe.Pointer(sddl)))
	return UTF16PtrToString(sddl)
}

// ToAbsolute converts a self-relative security descriptor into an absolute one.
func (selfRelativeSD *SECURITY_DESCRIPTOR) ToAbsolute() (absoluteSD *SECURITY_DESCRIPTOR, err error) {
	control, _, err := selfRelativeSD.Control()
	if err != nil {
		return
	}
	if control&SE_SELF_RELATIVE == 0 {
		err = ERROR_INVALID_PARAMETER
		return
	}
	var absoluteSDSize, daclSize, saclSize, ownerSize, groupSize uint32
	err = makeAbsoluteSD(selfRelativeSD, nil, &absoluteSDSize,
		nil, &daclSize, nil, &saclSize, nil, &ownerSize, nil, &groupSize)
	switch err {
	case ERROR_INSUFFICIENT_BUFFER:
	case nil:
		// makeAbsoluteSD is expected to fail, but it succeeds.
		return nil, ERROR_INTERNAL_ERROR
	default:
		return nil, err
	}
	if absoluteSDSize > 0 {
		absoluteSD = (*SECURITY_DESCRIPTOR)(unsafe.Pointer(&make([]byte, absoluteSDSize)[0]))
	}
	var (
		dacl  *ACL
		sacl  *ACL
		owner *SID
		group *SID
	)
	if daclSize > 0 {
		dacl = (*ACL)(unsafe.Pointer(&make([]byte, daclSize)[0]))
	}
	if saclSize > 0 {
		sacl = (*ACL)(unsafe.Pointer(&make([]byte, saclSize)[0]))
	}
	if ownerSize > 0 {
		owner = (*SID)(unsafe.Pointer(&make([]byte, ownerSize)[0]))
	}
	if groupSize > 0 {
		group = (*SID)(unsafe.Pointer(&make([]byte, groupSize)[0]))
	}
	err = makeAbsoluteSD(selfRelativeSD, absoluteSD, &absoluteSDSize,
		dacl, &daclSize, sacl, &saclSize, owner, &ownerSize, group, &groupSize)
	return
}

// ToSelfRelative converts an absolute security descriptor into a self-relative one.
func (absoluteSD *SECURITY_DESCRIPTOR) ToSelfRelative() (selfRelativeSD *SECURITY_DESCRIPTOR, err error) {
	control, _, err := absoluteSD.Control()
	if err != nil {
		return
	}
	if control&SE_SELF_RELATIVE != 0 {
		err = ERROR_INVALID_PARAMETER
		return
	}
	var selfRelativeSDSize uint32
	err = makeSelfRelativeSD(absoluteSD, nil, &selfRelativeSDSize)
	switch err {
	case ERROR_INSUFFICIENT_BUFFER:
	case nil:
		// makeSelfRelativeSD is expected to fail, but it succeeds.
		return nil, ERROR_INTERNAL_ERROR
	default:
		return nil, err
	}
	if selfRelativeSDSize > 0 {
		selfRelativeSD = (*SECURITY_DESCRIPTOR)(unsafe.Pointer(&make([]byte, selfRelativeSDSize)[0]))
	}
	err = makeSelfRelativeSD(absoluteSD, selfRelativeSD, &selfRelativeSDSize)
	return
}

func (selfRelativeSD *SECURITY_DESCRIPTOR) copySelfRelativeSecurityDescriptor() *SECURITY_DESCRIPTOR {
	sdLen := int(selfRelativeSD.Length())
	const min = int(unsafe.Sizeof(SECURITY_DESCRIPTOR{}))
	if sdLen < min {
		sdLen = min
	}

	var src []byte
	h := (*unsafeheader.Slice)(unsafe.Pointer(&src))
	h.Data = unsafe.Pointer(selfRelativeSD)
	h.Len = sdLen
	h.Cap = sdLen

	const psize = int(unsafe.Sizeof(uintptr(0)))

	var dst []byte
	h = (*unsafeheader.Slice)(unsafe.Pointer(&dst))
	alloc := make([]uintptr, (sdLen+psize-1)/psize)
	h.Data = (*unsafeheader.Slice)(unsafe.Pointer(&alloc)).Data
	h.Len = sdLen
	h.Cap = sdLen

	copy(dst, src)
	return (*SECURITY_DESCRIPTOR)(unsafe.Pointer(&dst[0]))
}

// SecurityDescriptorFromString converts an SDDL string describing a security descriptor into a
// self-relative security descriptor object allocated on the Go heap.
func SecurityDescriptorFromString(sddl string) (sd *SECURITY_DESCRIPTOR, err error) {
	var winHeapSD *SECURITY_DESCRIPTOR
	err = convertStringSecurityDescriptorToSecurityDescriptor(sddl, 1, &winHeapSD, nil)
	if err != nil {
		return
	}
	defer LocalFree(Handle(unsafe.Pointer(winHeapSD)))
	return winHeapSD.copySelfRelativeSecurityDescriptor(), nil
}

// GetSecurityInfo queries the security information for a given handle and returns the self-relative security
// descriptor result on the Go heap.
func GetSecurityInfo(handle Handle, objectType SE_OBJECT_TYPE, securityInformation SECURITY_INFORMATION) (sd *SECURITY_DESCRIPTOR, err error) {
	var winHeapSD *SECURITY_DESCRIPTOR
	err = getSecurityInfo(handle, objectType, securityInformation, nil, nil, nil, nil, &winHeapSD)
	if err != nil {
		return
	}
	defer LocalFree(Handle(unsafe.Pointer(winHeapSD)))
	return winHeapSD.copySelfRelativeSecurityDescriptor(), nil
}

// GetNamedSecurityInfo queries the security information for a given named object and returns the self-relative security
// descriptor result on the Go heap.
func GetNamedSecurityInfo(objectName string, objectType SE_OBJECT_TYPE, securityInformation SECURITY_INFORMATION) (sd *SECURITY_DESCRIPTOR, err error) {
	var winHeapSD *SECURITY_DESCRIPTOR
	err = getNamedSecurityInfo(objectName, objectType, securityInformation, nil, nil, nil, nil, &winHeapSD)
	if err != nil {
		return
	}
	defer LocalFree(Handle(unsafe.Pointer(winHeapSD)))
	return winHeapSD.copySelfRelativeSecurityDescriptor(), nil
}

// BuildSecurityDescriptor makes a new security descriptor using the input trustees, explicit access lists, and
// prior security descriptor to be merged, any of which can be nil, returning the self-relative security descriptor
// result on the Go heap.
func BuildSecurityDescriptor(owner *TRUSTEE, group *TRUSTEE, accessEntries []EXPLICIT_ACCESS, auditEntries []EXPLICIT_ACCESS, mergedSecurityDescriptor *SECURITY_DESCRIPTOR) (sd *SECURITY_DESCRIPTOR, err error) {
	var winHeapSD *SECURITY_DESCRIPTOR
	var winHeapSDSize uint32
	var firstAccessEntry *EXPLICIT_ACCESS
	if len(accessEntries) > 0 {
		firstAccessEntry = &accessEntries[0]
	}
	var firstAuditEntry *EXPLICIT_ACCESS
	if len(auditEntries) > 0 {
		firstAuditEntry = &auditEntries[0]
	}
	err = buildSecurityDescriptor(owner, group, uint32(len(accessEntries)), firstAccessEntry, uint32(len(auditEntries)), firstAuditEntry, mergedSecurityDescriptor, &winHeapSDSize, &winHeapSD)
	if err != nil {
		return
	}
	defer LocalFree(Handle(unsafe.Pointer(winHeapSD)))
	return winHeapSD.copySelfRelativeSecurityDescriptor(), nil
}

// NewSecurityDescriptor creates and initializes a new absolute security descriptor.
func NewSecurityDescriptor() (absoluteSD *SECURITY_DESCRIPTOR, err error) {
	absoluteSD = &SECURITY_DESCRIPTOR{}
	err = initializeSecurityDescriptor(absoluteSD, 1)
	return
}

// ACLFromEntries returns a new ACL on the Go heap containing a list of explicit entries as well as those of another ACL.
// Both explicitEntries and mergedACL are optional and can be nil.
func ACLFromEntries(explicitEntries []EXPLICIT_ACCESS, mergedACL *ACL) (acl *ACL, err error) {
	var firstExplicitEntry *EXPLICIT_ACCESS
	if len(explicitEntries) > 0 {
		firstExplicitEntry = &explicitEntries[0]
	}
	var winHeapACL *ACL
	err = setEntriesInAcl(uint32(len(explicitEntries)), firstExplicitEntry, mergedACL, &winHeapACL)
	if err != nil {
		return
	}
	defer LocalFree(Handle(unsafe.Pointer(winHeapACL)))
	aclBytes := make([]byte, winHeapACL.aclSize)
	copy(aclBytes, (*[(1 << 31) - 1]byte)(unsafe.Pointer(winHeapACL))[:len(aclBytes):len(aclBytes)])
	return (*ACL)(unsafe.Pointer(&aclBytes[0])), nil
}