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
|
/*
*************************************************************************
* Ralink Tech Inc.
* 5F., No.36, Taiyuan St., Jhubei City,
* Hsinchu County 302,
* Taiwan, R.O.C.
*
* (c) Copyright 2002-2007, Ralink Technology, Inc.
*
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
*************************************************************************
Module Name:
sanity.c
Abstract:
Revision History:
Who When What
-------- ---------- ----------------------------------------------
John Chang 2004-09-01 add WMM support
*/
#include "../rt_config.h"
extern UCHAR CISCO_OUI[];
extern UCHAR WPA_OUI[];
extern UCHAR RSN_OUI[];
extern UCHAR WME_INFO_ELEM[];
extern UCHAR WME_PARM_ELEM[];
extern UCHAR Ccx2QosInfo[];
extern UCHAR RALINK_OUI[];
extern UCHAR BROADCOM_OUI[];
extern UCHAR WPS_OUI[];
/*
==========================================================================
Description:
MLME message sanity check
Return:
TRUE if all parameters are OK, FALSE otherwise
IRQL = DISPATCH_LEVEL
==========================================================================
*/
BOOLEAN MlmeAddBAReqSanity(
IN PRTMP_ADAPTER pAd,
IN VOID *Msg,
IN ULONG MsgLen,
OUT PUCHAR pAddr2)
{
PMLME_ADDBA_REQ_STRUCT pInfo;
pInfo = (MLME_ADDBA_REQ_STRUCT *)Msg;
if ((MsgLen != sizeof(MLME_ADDBA_REQ_STRUCT)))
{
DBGPRINT(RT_DEBUG_TRACE, ("MlmeAddBAReqSanity fail - message lenght not correct.\n"));
return FALSE;
}
if ((pInfo->Wcid >= MAX_LEN_OF_MAC_TABLE))
{
DBGPRINT(RT_DEBUG_TRACE, ("MlmeAddBAReqSanity fail - The peer Mac is not associated yet.\n"));
return FALSE;
}
/*
if ((pInfo->BaBufSize > MAX_RX_REORDERBUF) || (pInfo->BaBufSize < 2))
{
DBGPRINT(RT_DEBUG_TRACE, ("MlmeAddBAReqSanity fail - Rx Reordering buffer too big or too small\n"));
return FALSE;
}
*/
if ((pInfo->pAddr[0]&0x01) == 0x01)
{
DBGPRINT(RT_DEBUG_TRACE, ("MlmeAddBAReqSanity fail - broadcast address not support BA\n"));
return FALSE;
}
return TRUE;
}
/*
==========================================================================
Description:
MLME message sanity check
Return:
TRUE if all parameters are OK, FALSE otherwise
IRQL = DISPATCH_LEVEL
==========================================================================
*/
BOOLEAN MlmeDelBAReqSanity(
IN PRTMP_ADAPTER pAd,
IN VOID *Msg,
IN ULONG MsgLen)
{
MLME_DELBA_REQ_STRUCT *pInfo;
pInfo = (MLME_DELBA_REQ_STRUCT *)Msg;
if ((MsgLen != sizeof(MLME_DELBA_REQ_STRUCT)))
{
DBGPRINT(RT_DEBUG_ERROR, ("MlmeDelBAReqSanity fail - message lenght not correct.\n"));
return FALSE;
}
if ((pInfo->Wcid >= MAX_LEN_OF_MAC_TABLE))
{
DBGPRINT(RT_DEBUG_ERROR, ("MlmeDelBAReqSanity fail - The peer Mac is not associated yet.\n"));
return FALSE;
}
if ((pInfo->TID & 0xf0))
{
DBGPRINT(RT_DEBUG_ERROR, ("MlmeDelBAReqSanity fail - The peer TID is incorrect.\n"));
return FALSE;
}
if (NdisEqualMemory(pAd->MacTab.Content[pInfo->Wcid].Addr, pInfo->Addr, MAC_ADDR_LEN) == 0)
{
DBGPRINT(RT_DEBUG_ERROR, ("MlmeDelBAReqSanity fail - the peer addr dosen't exist.\n"));
return FALSE;
}
return TRUE;
}
BOOLEAN PeerAddBAReqActionSanity(
IN PRTMP_ADAPTER pAd,
IN VOID *pMsg,
IN ULONG MsgLen,
OUT PUCHAR pAddr2)
{
PFRAME_802_11 pFrame = (PFRAME_802_11)pMsg;
PFRAME_ADDBA_REQ pAddFrame;
pAddFrame = (PFRAME_ADDBA_REQ)(pMsg);
if (MsgLen < (sizeof(FRAME_ADDBA_REQ)))
{
DBGPRINT(RT_DEBUG_ERROR,("PeerAddBAReqActionSanity: ADDBA Request frame length size = %ld incorrect\n", MsgLen));
return FALSE;
}
// we support immediate BA.
*(USHORT *)(&pAddFrame->BaParm) = cpu2le16(*(USHORT *)(&pAddFrame->BaParm));
pAddFrame->TimeOutValue = cpu2le16(pAddFrame->TimeOutValue);
pAddFrame->BaStartSeq.word = cpu2le16(pAddFrame->BaStartSeq.word);
if (pAddFrame->BaParm.BAPolicy != IMMED_BA)
{
DBGPRINT(RT_DEBUG_ERROR,("PeerAddBAReqActionSanity: ADDBA Request Ba Policy[%d] not support\n", pAddFrame->BaParm.BAPolicy));
DBGPRINT(RT_DEBUG_ERROR,("ADDBA Request. tid=%x, Bufsize=%x, AMSDUSupported=%x \n", pAddFrame->BaParm.TID, pAddFrame->BaParm.BufSize, pAddFrame->BaParm.AMSDUSupported));
return FALSE;
}
// we support immediate BA.
if (pAddFrame->BaParm.TID &0xfff0)
{
DBGPRINT(RT_DEBUG_ERROR,("PeerAddBAReqActionSanity: ADDBA Request incorrect TID = %d\n", pAddFrame->BaParm.TID));
return FALSE;
}
COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2);
return TRUE;
}
BOOLEAN PeerAddBARspActionSanity(
IN PRTMP_ADAPTER pAd,
IN VOID *pMsg,
IN ULONG MsgLen)
{
//PFRAME_802_11 pFrame = (PFRAME_802_11)pMsg;
PFRAME_ADDBA_RSP pAddFrame;
pAddFrame = (PFRAME_ADDBA_RSP)(pMsg);
if (MsgLen < (sizeof(FRAME_ADDBA_RSP)))
{
DBGPRINT(RT_DEBUG_ERROR,("PeerAddBARspActionSanity: ADDBA Response frame length size = %ld incorrect\n", MsgLen));
return FALSE;
}
// we support immediate BA.
*(USHORT *)(&pAddFrame->BaParm) = cpu2le16(*(USHORT *)(&pAddFrame->BaParm));
pAddFrame->StatusCode = cpu2le16(pAddFrame->StatusCode);
pAddFrame->TimeOutValue = cpu2le16(pAddFrame->TimeOutValue);
if (pAddFrame->BaParm.BAPolicy != IMMED_BA)
{
DBGPRINT(RT_DEBUG_ERROR,("PeerAddBAReqActionSanity: ADDBA Response Ba Policy[%d] not support\n", pAddFrame->BaParm.BAPolicy));
return FALSE;
}
// we support immediate BA.
if (pAddFrame->BaParm.TID &0xfff0)
{
DBGPRINT(RT_DEBUG_ERROR,("PeerAddBARspActionSanity: ADDBA Response incorrect TID = %d\n", pAddFrame->BaParm.TID));
return FALSE;
}
return TRUE;
}
BOOLEAN PeerDelBAActionSanity(
IN PRTMP_ADAPTER pAd,
IN UCHAR Wcid,
IN VOID *pMsg,
IN ULONG MsgLen )
{
//PFRAME_802_11 pFrame = (PFRAME_802_11)pMsg;
PFRAME_DELBA_REQ pDelFrame;
if (MsgLen != (sizeof(FRAME_DELBA_REQ)))
return FALSE;
if (Wcid >= MAX_LEN_OF_MAC_TABLE)
return FALSE;
pDelFrame = (PFRAME_DELBA_REQ)(pMsg);
*(USHORT *)(&pDelFrame->DelbaParm) = cpu2le16(*(USHORT *)(&pDelFrame->DelbaParm));
pDelFrame->ReasonCode = cpu2le16(pDelFrame->ReasonCode);
if (pDelFrame->DelbaParm.TID &0xfff0)
return FALSE;
return TRUE;
}
/*
==========================================================================
Description:
MLME message sanity check
Return:
TRUE if all parameters are OK, FALSE otherwise
IRQL = DISPATCH_LEVEL
==========================================================================
*/
BOOLEAN PeerBeaconAndProbeRspSanity(
IN PRTMP_ADAPTER pAd,
IN VOID *Msg,
IN ULONG MsgLen,
IN UCHAR MsgChannel,
OUT PUCHAR pAddr2,
OUT PUCHAR pBssid,
OUT CHAR Ssid[],
OUT UCHAR *pSsidLen,
OUT UCHAR *pBssType,
OUT USHORT *pBeaconPeriod,
OUT UCHAR *pChannel,
OUT UCHAR *pNewChannel,
OUT LARGE_INTEGER *pTimestamp,
OUT CF_PARM *pCfParm,
OUT USHORT *pAtimWin,
OUT USHORT *pCapabilityInfo,
OUT UCHAR *pErp,
OUT UCHAR *pDtimCount,
OUT UCHAR *pDtimPeriod,
OUT UCHAR *pBcastFlag,
OUT UCHAR *pMessageToMe,
OUT UCHAR SupRate[],
OUT UCHAR *pSupRateLen,
OUT UCHAR ExtRate[],
OUT UCHAR *pExtRateLen,
OUT UCHAR *pCkipFlag,
OUT UCHAR *pAironetCellPowerLimit,
OUT PEDCA_PARM pEdcaParm,
OUT PQBSS_LOAD_PARM pQbssLoad,
OUT PQOS_CAPABILITY_PARM pQosCapability,
OUT ULONG *pRalinkIe,
OUT UCHAR *pHtCapabilityLen,
#ifdef CONFIG_STA_SUPPORT
OUT UCHAR *pPreNHtCapabilityLen,
#endif // CONFIG_STA_SUPPORT //
OUT HT_CAPABILITY_IE *pHtCapability,
OUT UCHAR *AddHtInfoLen,
OUT ADD_HT_INFO_IE *AddHtInfo,
OUT UCHAR *NewExtChannelOffset, // Ht extension channel offset(above or below)
OUT USHORT *LengthVIE,
OUT PNDIS_802_11_VARIABLE_IEs pVIE)
{
CHAR *Ptr;
#ifdef CONFIG_STA_SUPPORT
CHAR TimLen;
#endif // CONFIG_STA_SUPPORT //
PFRAME_802_11 pFrame;
PEID_STRUCT pEid;
UCHAR SubType;
UCHAR Sanity;
//UCHAR ECWMin, ECWMax;
//MAC_CSR9_STRUC Csr9;
ULONG Length = 0;
// For some 11a AP which didn't have DS_IE, we use two conditions to decide the channel
// 1. If the AP is 11n enabled, then check the control channel.
// 2. If the AP didn't have any info about channel, use the channel we received this frame as the channel. (May inaccuracy!!)
UCHAR CtrlChannel = 0;
// Add for 3 necessary EID field check
Sanity = 0;
*pAtimWin = 0;
*pErp = 0;
*pDtimCount = 0;
*pDtimPeriod = 0;
*pBcastFlag = 0;
*pMessageToMe = 0;
*pExtRateLen = 0;
*pCkipFlag = 0; // Default of CkipFlag is 0
*pAironetCellPowerLimit = 0xFF; // Default of AironetCellPowerLimit is 0xFF
*LengthVIE = 0; // Set the length of VIE to init value 0
*pHtCapabilityLen = 0; // Set the length of VIE to init value 0
#ifdef CONFIG_STA_SUPPORT
if (pAd->OpMode == OPMODE_STA)
*pPreNHtCapabilityLen = 0; // Set the length of VIE to init value 0
#endif // CONFIG_STA_SUPPORT //
*AddHtInfoLen = 0; // Set the length of VIE to init value 0
*pRalinkIe = 0;
*pNewChannel = 0;
*NewExtChannelOffset = 0xff; //Default 0xff means no such IE
pCfParm->bValid = FALSE; // default: no IE_CF found
pQbssLoad->bValid = FALSE; // default: no IE_QBSS_LOAD found
pEdcaParm->bValid = FALSE; // default: no IE_EDCA_PARAMETER found
pQosCapability->bValid = FALSE; // default: no IE_QOS_CAPABILITY found
pFrame = (PFRAME_802_11)Msg;
// get subtype from header
SubType = (UCHAR)pFrame->Hdr.FC.SubType;
// get Addr2 and BSSID from header
COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2);
COPY_MAC_ADDR(pBssid, pFrame->Hdr.Addr3);
// hex_dump("Beacon", Msg, MsgLen);
Ptr = pFrame->Octet;
Length += LENGTH_802_11;
// get timestamp from payload and advance the pointer
NdisMoveMemory(pTimestamp, Ptr, TIMESTAMP_LEN);
pTimestamp->u.LowPart = cpu2le32(pTimestamp->u.LowPart);
pTimestamp->u.HighPart = cpu2le32(pTimestamp->u.HighPart);
Ptr += TIMESTAMP_LEN;
Length += TIMESTAMP_LEN;
// get beacon interval from payload and advance the pointer
NdisMoveMemory(pBeaconPeriod, Ptr, 2);
Ptr += 2;
Length += 2;
// get capability info from payload and advance the pointer
NdisMoveMemory(pCapabilityInfo, Ptr, 2);
Ptr += 2;
Length += 2;
if (CAP_IS_ESS_ON(*pCapabilityInfo))
*pBssType = BSS_INFRA;
else
*pBssType = BSS_ADHOC;
pEid = (PEID_STRUCT) Ptr;
// get variable fields from payload and advance the pointer
while ((Length + 2 + pEid->Len) <= MsgLen)
{
//
// Secure copy VIE to VarIE[MAX_VIE_LEN] didn't overflow.
//
if ((*LengthVIE + pEid->Len + 2) >= MAX_VIE_LEN)
{
DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - Variable IEs out of resource [len(=%d) > MAX_VIE_LEN(=%d)]\n",
(*LengthVIE + pEid->Len + 2), MAX_VIE_LEN));
break;
}
switch(pEid->Eid)
{
case IE_SSID:
// Already has one SSID EID in this beacon, ignore the second one
if (Sanity & 0x1)
break;
if(pEid->Len <= MAX_LEN_OF_SSID)
{
NdisMoveMemory(Ssid, pEid->Octet, pEid->Len);
*pSsidLen = pEid->Len;
Sanity |= 0x1;
}
else
{
DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_SSID (len=%d)\n",pEid->Len));
return FALSE;
}
break;
case IE_SUPP_RATES:
if(pEid->Len <= MAX_LEN_OF_SUPPORTED_RATES)
{
Sanity |= 0x2;
NdisMoveMemory(SupRate, pEid->Octet, pEid->Len);
*pSupRateLen = pEid->Len;
// TODO: 2004-09-14 not a good design here, cause it exclude extra rates
// from ScanTab. We should report as is. And filter out unsupported
// rates in MlmeAux.
// Check against the supported rates
// RTMPCheckRates(pAd, SupRate, pSupRateLen);
}
else
{
DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_SUPP_RATES (len=%d)\n",pEid->Len));
return FALSE;
}
break;
case IE_HT_CAP:
if (pEid->Len >= SIZE_HT_CAP_IE) //Note: allow extension.!!
{
NdisMoveMemory(pHtCapability, pEid->Octet, sizeof(HT_CAPABILITY_IE));
*pHtCapabilityLen = SIZE_HT_CAP_IE; // Nnow we only support 26 bytes.
*(USHORT *)(&pHtCapability->HtCapInfo) = cpu2le16(*(USHORT *)(&pHtCapability->HtCapInfo));
*(USHORT *)(&pHtCapability->ExtHtCapInfo) = cpu2le16(*(USHORT *)(&pHtCapability->ExtHtCapInfo));
#ifdef CONFIG_STA_SUPPORT
IF_DEV_CONFIG_OPMODE_ON_STA(pAd)
{
*pPreNHtCapabilityLen = 0; // Nnow we only support 26 bytes.
Ptr = (PUCHAR) pVIE;
NdisMoveMemory(Ptr + *LengthVIE, &pEid->Eid, pEid->Len + 2);
*LengthVIE += (pEid->Len + 2);
}
#endif // CONFIG_STA_SUPPORT //
}
else
{
DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - wrong IE_HT_CAP. pEid->Len = %d\n", pEid->Len));
}
break;
case IE_ADD_HT:
if (pEid->Len >= sizeof(ADD_HT_INFO_IE))
{
// This IE allows extension, but we can ignore extra bytes beyond our knowledge , so only
// copy first sizeof(ADD_HT_INFO_IE)
NdisMoveMemory(AddHtInfo, pEid->Octet, sizeof(ADD_HT_INFO_IE));
*AddHtInfoLen = SIZE_ADD_HT_INFO_IE;
CtrlChannel = AddHtInfo->ControlChan;
*(USHORT *)(&AddHtInfo->AddHtInfo2) = cpu2le16(*(USHORT *)(&AddHtInfo->AddHtInfo2));
*(USHORT *)(&AddHtInfo->AddHtInfo3) = cpu2le16(*(USHORT *)(&AddHtInfo->AddHtInfo3));
#ifdef CONFIG_STA_SUPPORT
IF_DEV_CONFIG_OPMODE_ON_STA(pAd)
{
Ptr = (PUCHAR) pVIE;
NdisMoveMemory(Ptr + *LengthVIE, &pEid->Eid, pEid->Len + 2);
*LengthVIE += (pEid->Len + 2);
}
#endif // CONFIG_STA_SUPPORT //
}
else
{
DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - wrong IE_ADD_HT. \n"));
}
break;
case IE_SECONDARY_CH_OFFSET:
if (pEid->Len == 1)
{
*NewExtChannelOffset = pEid->Octet[0];
}
else
{
DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - wrong IE_SECONDARY_CH_OFFSET. \n"));
}
break;
case IE_FH_PARM:
DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity(IE_FH_PARM) \n"));
break;
case IE_DS_PARM:
if(pEid->Len == 1)
{
*pChannel = *pEid->Octet;
#ifdef CONFIG_STA_SUPPORT
IF_DEV_CONFIG_OPMODE_ON_STA(pAd)
{
if (ChannelSanity(pAd, *pChannel) == 0)
{
return FALSE;
}
}
#endif // CONFIG_STA_SUPPORT //
Sanity |= 0x4;
}
else
{
DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_DS_PARM (len=%d)\n",pEid->Len));
return FALSE;
}
break;
case IE_CF_PARM:
if(pEid->Len == 6)
{
pCfParm->bValid = TRUE;
pCfParm->CfpCount = pEid->Octet[0];
pCfParm->CfpPeriod = pEid->Octet[1];
pCfParm->CfpMaxDuration = pEid->Octet[2] + 256 * pEid->Octet[3];
pCfParm->CfpDurRemaining = pEid->Octet[4] + 256 * pEid->Octet[5];
}
else
{
DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_CF_PARM\n"));
return FALSE;
}
break;
case IE_IBSS_PARM:
if(pEid->Len == 2)
{
NdisMoveMemory(pAtimWin, pEid->Octet, pEid->Len);
}
else
{
DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_IBSS_PARM\n"));
return FALSE;
}
break;
#ifdef CONFIG_STA_SUPPORT
case IE_TIM:
if(INFRA_ON(pAd) && SubType == SUBTYPE_BEACON)
{
GetTimBit((PUCHAR)pEid, pAd->StaActive.Aid, &TimLen, pBcastFlag, pDtimCount, pDtimPeriod, pMessageToMe);
}
break;
#endif // CONFIG_STA_SUPPORT //
case IE_CHANNEL_SWITCH_ANNOUNCEMENT:
if(pEid->Len == 3)
{
*pNewChannel = pEid->Octet[1]; //extract new channel number
}
break;
// New for WPA
// CCX v2 has the same IE, we need to parse that too
// Wifi WMM use the same IE vale, need to parse that too
// case IE_WPA:
case IE_VENDOR_SPECIFIC:
// Check Broadcom/Atheros 802.11n OUI version, for HT Capability IE.
// This HT IE is before IEEE draft set HT IE value.2006-09-28 by Jan.
/*if (NdisEqualMemory(pEid->Octet, BROADCOM_OUI, 3) && (pEid->Len >= 4))
{
if ((pEid->Octet[3] == OUI_BROADCOM_HT) && (pEid->Len >= 30))
{
{
NdisMoveMemory(pHtCapability, &pEid->Octet[4], sizeof(HT_CAPABILITY_IE));
*pHtCapabilityLen = SIZE_HT_CAP_IE; // Nnow we only support 26 bytes.
}
}
if ((pEid->Octet[3] == OUI_BROADCOM_HT) && (pEid->Len >= 26))
{
{
NdisMoveMemory(AddHtInfo, &pEid->Octet[4], sizeof(ADD_HT_INFO_IE));
*AddHtInfoLen = SIZE_ADD_HT_INFO_IE; // Nnow we only support 26 bytes.
}
}
}
*/
// Check the OUI version, filter out non-standard usage
if (NdisEqualMemory(pEid->Octet, RALINK_OUI, 3) && (pEid->Len == 7))
{
//*pRalinkIe = pEid->Octet[3];
if (pEid->Octet[3] != 0)
*pRalinkIe = pEid->Octet[3];
else
*pRalinkIe = 0xf0000000; // Set to non-zero value (can't set bit0-2) to represent this is Ralink Chip. So at linkup, we will set ralinkchip flag.
}
#ifdef CONFIG_STA_SUPPORT
#ifdef DOT11_N_SUPPORT
// This HT IE is before IEEE draft set HT IE value.2006-09-28 by Jan.
// Other vendors had production before IE_HT_CAP value is assigned. To backward support those old-firmware AP,
// Check broadcom-defiend pre-802.11nD1.0 OUI for HT related IE, including HT Capatilities IE and HT Information IE
else if ((*pHtCapabilityLen == 0) && NdisEqualMemory(pEid->Octet, PRE_N_HT_OUI, 3) && (pEid->Len >= 4) && (pAd->OpMode == OPMODE_STA))
{
if ((pEid->Octet[3] == OUI_PREN_HT_CAP) && (pEid->Len >= 30) && (*pHtCapabilityLen == 0))
{
NdisMoveMemory(pHtCapability, &pEid->Octet[4], sizeof(HT_CAPABILITY_IE));
*pPreNHtCapabilityLen = SIZE_HT_CAP_IE;
}
if ((pEid->Octet[3] == OUI_PREN_ADD_HT) && (pEid->Len >= 26))
{
NdisMoveMemory(AddHtInfo, &pEid->Octet[4], sizeof(ADD_HT_INFO_IE));
*AddHtInfoLen = SIZE_ADD_HT_INFO_IE;
}
}
#endif // DOT11_N_SUPPORT //
#endif // CONFIG_STA_SUPPORT //
else if (NdisEqualMemory(pEid->Octet, WPA_OUI, 4))
{
// Copy to pVIE which will report to microsoft bssid list.
Ptr = (PUCHAR) pVIE;
NdisMoveMemory(Ptr + *LengthVIE, &pEid->Eid, pEid->Len + 2);
*LengthVIE += (pEid->Len + 2);
}
else if (NdisEqualMemory(pEid->Octet, WME_PARM_ELEM, 6) && (pEid->Len == 24))
{
PUCHAR ptr;
int i;
// parsing EDCA parameters
pEdcaParm->bValid = TRUE;
pEdcaParm->bQAck = FALSE; // pEid->Octet[0] & 0x10;
pEdcaParm->bQueueRequest = FALSE; // pEid->Octet[0] & 0x20;
pEdcaParm->bTxopRequest = FALSE; // pEid->Octet[0] & 0x40;
pEdcaParm->EdcaUpdateCount = pEid->Octet[6] & 0x0f;
pEdcaParm->bAPSDCapable = (pEid->Octet[6] & 0x80) ? 1 : 0;
ptr = &pEid->Octet[8];
for (i=0; i<4; i++)
{
UCHAR aci = (*ptr & 0x60) >> 5; // b5~6 is AC INDEX
pEdcaParm->bACM[aci] = (((*ptr) & 0x10) == 0x10); // b5 is ACM
pEdcaParm->Aifsn[aci] = (*ptr) & 0x0f; // b0~3 is AIFSN
pEdcaParm->Cwmin[aci] = *(ptr+1) & 0x0f; // b0~4 is Cwmin
pEdcaParm->Cwmax[aci] = *(ptr+1) >> 4; // b5~8 is Cwmax
pEdcaParm->Txop[aci] = *(ptr+2) + 256 * (*(ptr+3)); // in unit of 32-us
ptr += 4; // point to next AC
}
}
else if (NdisEqualMemory(pEid->Octet, WME_INFO_ELEM, 6) && (pEid->Len == 7))
{
// parsing EDCA parameters
pEdcaParm->bValid = TRUE;
pEdcaParm->bQAck = FALSE; // pEid->Octet[0] & 0x10;
pEdcaParm->bQueueRequest = FALSE; // pEid->Octet[0] & 0x20;
pEdcaParm->bTxopRequest = FALSE; // pEid->Octet[0] & 0x40;
pEdcaParm->EdcaUpdateCount = pEid->Octet[6] & 0x0f;
pEdcaParm->bAPSDCapable = (pEid->Octet[6] & 0x80) ? 1 : 0;
// use default EDCA parameter
pEdcaParm->bACM[QID_AC_BE] = 0;
pEdcaParm->Aifsn[QID_AC_BE] = 3;
pEdcaParm->Cwmin[QID_AC_BE] = CW_MIN_IN_BITS;
pEdcaParm->Cwmax[QID_AC_BE] = CW_MAX_IN_BITS;
pEdcaParm->Txop[QID_AC_BE] = 0;
pEdcaParm->bACM[QID_AC_BK] = 0;
pEdcaParm->Aifsn[QID_AC_BK] = 7;
pEdcaParm->Cwmin[QID_AC_BK] = CW_MIN_IN_BITS;
pEdcaParm->Cwmax[QID_AC_BK] = CW_MAX_IN_BITS;
pEdcaParm->Txop[QID_AC_BK] = 0;
pEdcaParm->bACM[QID_AC_VI] = 0;
pEdcaParm->Aifsn[QID_AC_VI] = 2;
pEdcaParm->Cwmin[QID_AC_VI] = CW_MIN_IN_BITS-1;
pEdcaParm->Cwmax[QID_AC_VI] = CW_MAX_IN_BITS;
pEdcaParm->Txop[QID_AC_VI] = 96; // AC_VI: 96*32us ~= 3ms
pEdcaParm->bACM[QID_AC_VO] = 0;
pEdcaParm->Aifsn[QID_AC_VO] = 2;
pEdcaParm->Cwmin[QID_AC_VO] = CW_MIN_IN_BITS-2;
pEdcaParm->Cwmax[QID_AC_VO] = CW_MAX_IN_BITS-1;
pEdcaParm->Txop[QID_AC_VO] = 48; // AC_VO: 48*32us ~= 1.5ms
}
break;
case IE_EXT_SUPP_RATES:
if (pEid->Len <= MAX_LEN_OF_SUPPORTED_RATES)
{
NdisMoveMemory(ExtRate, pEid->Octet, pEid->Len);
*pExtRateLen = pEid->Len;
// TODO: 2004-09-14 not a good design here, cause it exclude extra rates
// from ScanTab. We should report as is. And filter out unsupported
// rates in MlmeAux.
// Check against the supported rates
// RTMPCheckRates(pAd, ExtRate, pExtRateLen);
}
break;
case IE_ERP:
if (pEid->Len == 1)
{
*pErp = (UCHAR)pEid->Octet[0];
}
break;
case IE_AIRONET_CKIP:
// 0. Check Aironet IE length, it must be larger or equal to 28
// Cisco AP350 used length as 28
// Cisco AP12XX used length as 30
if (pEid->Len < (CKIP_NEGOTIATION_LENGTH - 2))
break;
// 1. Copy CKIP flag byte to buffer for process
*pCkipFlag = *(pEid->Octet + 8);
break;
case IE_AP_TX_POWER:
// AP Control of Client Transmit Power
//0. Check Aironet IE length, it must be 6
if (pEid->Len != 0x06)
break;
// Get cell power limit in dBm
if (NdisEqualMemory(pEid->Octet, CISCO_OUI, 3) == 1)
*pAironetCellPowerLimit = *(pEid->Octet + 4);
break;
// WPA2 & 802.11i RSN
case IE_RSN:
// There is no OUI for version anymore, check the group cipher OUI before copying
if (RTMPEqualMemory(pEid->Octet + 2, RSN_OUI, 3))
{
// Copy to pVIE which will report to microsoft bssid list.
Ptr = (PUCHAR) pVIE;
NdisMoveMemory(Ptr + *LengthVIE, &pEid->Eid, pEid->Len + 2);
*LengthVIE += (pEid->Len + 2);
}
break;
default:
break;
}
Length = Length + 2 + pEid->Len; // Eid[1] + Len[1]+ content[Len]
pEid = (PEID_STRUCT)((UCHAR*)pEid + 2 + pEid->Len);
}
// For some 11a AP. it did not have the channel EID, patch here
#ifdef CONFIG_STA_SUPPORT
IF_DEV_CONFIG_OPMODE_ON_STA(pAd)
{
UCHAR LatchRfChannel = MsgChannel;
if ((pAd->LatchRfRegs.Channel > 14) && ((Sanity & 0x4) == 0))
{
if (CtrlChannel != 0)
*pChannel = CtrlChannel;
else
*pChannel = LatchRfChannel;
Sanity |= 0x4;
}
}
#endif // CONFIG_STA_SUPPORT //
if (Sanity != 0x7)
{
DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - missing field, Sanity=0x%02x\n", Sanity));
return FALSE;
}
else
{
return TRUE;
}
}
#ifdef DOT11N_DRAFT3
/*
==========================================================================
Description:
MLME message sanity check for some IE addressed in 802.11n d3.03.
Return:
TRUE if all parameters are OK, FALSE otherwise
IRQL = DISPATCH_LEVEL
==========================================================================
*/
BOOLEAN PeerBeaconAndProbeRspSanity2(
IN PRTMP_ADAPTER pAd,
IN VOID *Msg,
IN ULONG MsgLen,
OUT UCHAR *RegClass)
{
CHAR *Ptr;
PFRAME_802_11 pFrame;
PEID_STRUCT pEid;
ULONG Length = 0;
pFrame = (PFRAME_802_11)Msg;
*RegClass = 0;
Ptr = pFrame->Octet;
Length += LENGTH_802_11;
// get timestamp from payload and advance the pointer
Ptr += TIMESTAMP_LEN;
Length += TIMESTAMP_LEN;
// get beacon interval from payload and advance the pointer
Ptr += 2;
Length += 2;
// get capability info from payload and advance the pointer
Ptr += 2;
Length += 2;
pEid = (PEID_STRUCT) Ptr;
// get variable fields from payload and advance the pointer
while ((Length + 2 + pEid->Len) <= MsgLen)
{
switch(pEid->Eid)
{
case IE_SUPP_REG_CLASS:
if(pEid->Len > 0)
{
*RegClass = *pEid->Octet;
}
else
{
DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_SSID (len=%d)\n",pEid->Len));
return FALSE;
}
break;
}
Length = Length + 2 + pEid->Len; // Eid[1] + Len[1]+ content[Len]
pEid = (PEID_STRUCT)((UCHAR*)pEid + 2 + pEid->Len);
}
return TRUE;
}
#endif // DOT11N_DRAFT3 //
/*
==========================================================================
Description:
MLME message sanity check
Return:
TRUE if all parameters are OK, FALSE otherwise
==========================================================================
*/
BOOLEAN MlmeScanReqSanity(
IN PRTMP_ADAPTER pAd,
IN VOID *Msg,
IN ULONG MsgLen,
OUT UCHAR *pBssType,
OUT CHAR Ssid[],
OUT UCHAR *pSsidLen,
OUT UCHAR *pScanType)
{
MLME_SCAN_REQ_STRUCT *Info;
Info = (MLME_SCAN_REQ_STRUCT *)(Msg);
*pBssType = Info->BssType;
*pSsidLen = Info->SsidLen;
NdisMoveMemory(Ssid, Info->Ssid, *pSsidLen);
*pScanType = Info->ScanType;
if ((*pBssType == BSS_INFRA || *pBssType == BSS_ADHOC || *pBssType == BSS_ANY)
&& (*pScanType == SCAN_ACTIVE || *pScanType == SCAN_PASSIVE
#ifdef CONFIG_STA_SUPPORT
|| *pScanType == SCAN_CISCO_PASSIVE || *pScanType == SCAN_CISCO_ACTIVE
|| *pScanType == SCAN_CISCO_CHANNEL_LOAD || *pScanType == SCAN_CISCO_NOISE
#endif // CONFIG_STA_SUPPORT //
))
{
return TRUE;
}
else
{
DBGPRINT(RT_DEBUG_TRACE, ("MlmeScanReqSanity fail - wrong BssType or ScanType\n"));
return FALSE;
}
}
// IRQL = DISPATCH_LEVEL
UCHAR ChannelSanity(
IN PRTMP_ADAPTER pAd,
IN UCHAR channel)
{
int i;
for (i = 0; i < pAd->ChannelListNum; i ++)
{
if (channel == pAd->ChannelList[i].Channel)
return 1;
}
return 0;
}
/*
==========================================================================
Description:
MLME message sanity check
Return:
TRUE if all parameters are OK, FALSE otherwise
IRQL = DISPATCH_LEVEL
==========================================================================
*/
BOOLEAN PeerDeauthSanity(
IN PRTMP_ADAPTER pAd,
IN VOID *Msg,
IN ULONG MsgLen,
OUT PUCHAR pAddr2,
OUT USHORT *pReason)
{
PFRAME_802_11 pFrame = (PFRAME_802_11)Msg;
COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2);
NdisMoveMemory(pReason, &pFrame->Octet[0], 2);
return TRUE;
}
/*
==========================================================================
Description:
MLME message sanity check
Return:
TRUE if all parameters are OK, FALSE otherwise
IRQL = DISPATCH_LEVEL
==========================================================================
*/
BOOLEAN PeerAuthSanity(
IN PRTMP_ADAPTER pAd,
IN VOID *Msg,
IN ULONG MsgLen,
OUT PUCHAR pAddr,
OUT USHORT *pAlg,
OUT USHORT *pSeq,
OUT USHORT *pStatus,
CHAR *pChlgText)
{
PFRAME_802_11 pFrame = (PFRAME_802_11)Msg;
COPY_MAC_ADDR(pAddr, pFrame->Hdr.Addr2);
NdisMoveMemory(pAlg, &pFrame->Octet[0], 2);
NdisMoveMemory(pSeq, &pFrame->Octet[2], 2);
NdisMoveMemory(pStatus, &pFrame->Octet[4], 2);
if ((*pAlg == Ndis802_11AuthModeOpen)
)
{
if (*pSeq == 1 || *pSeq == 2)
{
return TRUE;
}
else
{
DBGPRINT(RT_DEBUG_TRACE, ("PeerAuthSanity fail - wrong Seg#\n"));
return FALSE;
}
}
else if (*pAlg == Ndis802_11AuthModeShared)
{
if (*pSeq == 1 || *pSeq == 4)
{
return TRUE;
}
else if (*pSeq == 2 || *pSeq == 3)
{
NdisMoveMemory(pChlgText, &pFrame->Octet[8], CIPHER_TEXT_LEN);
return TRUE;
}
else
{
DBGPRINT(RT_DEBUG_TRACE, ("PeerAuthSanity fail - wrong Seg#\n"));
return FALSE;
}
}
else
{
DBGPRINT(RT_DEBUG_TRACE, ("PeerAuthSanity fail - wrong algorithm\n"));
return FALSE;
}
}
/*
==========================================================================
Description:
MLME message sanity check
Return:
TRUE if all parameters are OK, FALSE otherwise
==========================================================================
*/
BOOLEAN MlmeAuthReqSanity(
IN PRTMP_ADAPTER pAd,
IN VOID *Msg,
IN ULONG MsgLen,
OUT PUCHAR pAddr,
OUT ULONG *pTimeout,
OUT USHORT *pAlg)
{
MLME_AUTH_REQ_STRUCT *pInfo;
pInfo = (MLME_AUTH_REQ_STRUCT *)Msg;
COPY_MAC_ADDR(pAddr, pInfo->Addr);
*pTimeout = pInfo->Timeout;
*pAlg = pInfo->Alg;
if (((*pAlg == Ndis802_11AuthModeShared) ||(*pAlg == Ndis802_11AuthModeOpen)
) &&
((*pAddr & 0x01) == 0))
{
return TRUE;
}
else
{
DBGPRINT(RT_DEBUG_TRACE, ("MlmeAuthReqSanity fail - wrong algorithm\n"));
return FALSE;
}
}
/*
==========================================================================
Description:
MLME message sanity check
Return:
TRUE if all parameters are OK, FALSE otherwise
IRQL = DISPATCH_LEVEL
==========================================================================
*/
BOOLEAN MlmeAssocReqSanity(
IN PRTMP_ADAPTER pAd,
IN VOID *Msg,
IN ULONG MsgLen,
OUT PUCHAR pApAddr,
OUT USHORT *pCapabilityInfo,
OUT ULONG *pTimeout,
OUT USHORT *pListenIntv)
{
MLME_ASSOC_REQ_STRUCT *pInfo;
pInfo = (MLME_ASSOC_REQ_STRUCT *)Msg;
*pTimeout = pInfo->Timeout; // timeout
COPY_MAC_ADDR(pApAddr, pInfo->Addr); // AP address
*pCapabilityInfo = pInfo->CapabilityInfo; // capability info
*pListenIntv = pInfo->ListenIntv;
return TRUE;
}
/*
==========================================================================
Description:
MLME message sanity check
Return:
TRUE if all parameters are OK, FALSE otherwise
IRQL = DISPATCH_LEVEL
==========================================================================
*/
BOOLEAN PeerDisassocSanity(
IN PRTMP_ADAPTER pAd,
IN VOID *Msg,
IN ULONG MsgLen,
OUT PUCHAR pAddr2,
OUT USHORT *pReason)
{
PFRAME_802_11 pFrame = (PFRAME_802_11)Msg;
COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2);
NdisMoveMemory(pReason, &pFrame->Octet[0], 2);
return TRUE;
}
/*
========================================================================
Routine Description:
Sanity check NetworkType (11b, 11g or 11a)
Arguments:
pBss - Pointer to BSS table.
Return Value:
Ndis802_11DS .......(11b)
Ndis802_11OFDM24....(11g)
Ndis802_11OFDM5.....(11a)
IRQL = DISPATCH_LEVEL
========================================================================
*/
NDIS_802_11_NETWORK_TYPE NetworkTypeInUseSanity(
IN PBSS_ENTRY pBss)
{
NDIS_802_11_NETWORK_TYPE NetWorkType;
UCHAR rate, i;
NetWorkType = Ndis802_11DS;
if (pBss->Channel <= 14)
{
//
// First check support Rate.
//
for (i = 0; i < pBss->SupRateLen; i++)
{
rate = pBss->SupRate[i] & 0x7f; // Mask out basic rate set bit
if ((rate == 2) || (rate == 4) || (rate == 11) || (rate == 22))
{
continue;
}
else
{
//
// Otherwise (even rate > 108) means Ndis802_11OFDM24
//
NetWorkType = Ndis802_11OFDM24;
break;
}
}
//
// Second check Extend Rate.
//
if (NetWorkType != Ndis802_11OFDM24)
{
for (i = 0; i < pBss->ExtRateLen; i++)
{
rate = pBss->SupRate[i] & 0x7f; // Mask out basic rate set bit
if ((rate == 2) || (rate == 4) || (rate == 11) || (rate == 22))
{
continue;
}
else
{
//
// Otherwise (even rate > 108) means Ndis802_11OFDM24
//
NetWorkType = Ndis802_11OFDM24;
break;
}
}
}
}
else
{
NetWorkType = Ndis802_11OFDM5;
}
if (pBss->HtCapabilityLen != 0)
{
if (NetWorkType == Ndis802_11OFDM5)
NetWorkType = Ndis802_11OFDM5_N;
else
NetWorkType = Ndis802_11OFDM24_N;
}
return NetWorkType;
}
/*
==========================================================================
Description:
WPA message sanity check
Return:
TRUE if all parameters are OK, FALSE otherwise
==========================================================================
*/
BOOLEAN PeerWpaMessageSanity(
IN PRTMP_ADAPTER pAd,
IN PEAPOL_PACKET pMsg,
IN ULONG MsgLen,
IN UCHAR MsgType,
IN MAC_TABLE_ENTRY *pEntry)
{
UCHAR mic[LEN_KEY_DESC_MIC], digest[80], KEYDATA[MAX_LEN_OF_RSNIE];
BOOLEAN bReplayDiff = FALSE;
BOOLEAN bWPA2 = FALSE;
KEY_INFO EapolKeyInfo;
UCHAR GroupKeyIndex = 0;
NdisZeroMemory(mic, sizeof(mic));
NdisZeroMemory(digest, sizeof(digest));
NdisZeroMemory(KEYDATA, sizeof(KEYDATA));
NdisZeroMemory((PUCHAR)&EapolKeyInfo, sizeof(EapolKeyInfo));
NdisMoveMemory((PUCHAR)&EapolKeyInfo, (PUCHAR)&pMsg->KeyDesc.KeyInfo, sizeof(KEY_INFO));
*((USHORT *)&EapolKeyInfo) = cpu2le16(*((USHORT *)&EapolKeyInfo));
// Choose WPA2 or not
if ((pEntry->AuthMode == Ndis802_11AuthModeWPA2) || (pEntry->AuthMode == Ndis802_11AuthModeWPA2PSK))
bWPA2 = TRUE;
// 0. Check MsgType
if ((MsgType > EAPOL_GROUP_MSG_2) || (MsgType < EAPOL_PAIR_MSG_1))
{
DBGPRINT(RT_DEBUG_ERROR, ("The message type is invalid(%d)! \n", MsgType));
return FALSE;
}
// 1. Replay counter check
if (MsgType == EAPOL_PAIR_MSG_1 || MsgType == EAPOL_PAIR_MSG_3 || MsgType == EAPOL_GROUP_MSG_1) // For supplicant
{
// First validate replay counter, only accept message with larger replay counter.
// Let equal pass, some AP start with all zero replay counter
UCHAR ZeroReplay[LEN_KEY_DESC_REPLAY];
NdisZeroMemory(ZeroReplay, LEN_KEY_DESC_REPLAY);
if ((RTMPCompareMemory(pMsg->KeyDesc.ReplayCounter, pEntry->R_Counter, LEN_KEY_DESC_REPLAY) != 1) &&
(RTMPCompareMemory(pMsg->KeyDesc.ReplayCounter, ZeroReplay, LEN_KEY_DESC_REPLAY) != 0))
{
bReplayDiff = TRUE;
}
}
else if (MsgType == EAPOL_PAIR_MSG_2 || MsgType == EAPOL_PAIR_MSG_4 || MsgType == EAPOL_GROUP_MSG_2) // For authenticator
{
// check Replay Counter coresponds to MSG from authenticator, otherwise discard
if (!NdisEqualMemory(pMsg->KeyDesc.ReplayCounter, pEntry->R_Counter, LEN_KEY_DESC_REPLAY))
{
bReplayDiff = TRUE;
}
}
// Replay Counter different condition
if (bReplayDiff)
{
// send wireless event - for replay counter different
if (pAd->CommonCfg.bWirelessEvent)
RTMPSendWirelessEvent(pAd, IW_REPLAY_COUNTER_DIFF_EVENT_FLAG, pEntry->Addr, pEntry->apidx, 0);
if (MsgType < EAPOL_GROUP_MSG_1)
{
DBGPRINT(RT_DEBUG_ERROR, ("Replay Counter Different in pairwise msg %d of 4-way handshake!\n", MsgType));
}
else
{
DBGPRINT(RT_DEBUG_ERROR, ("Replay Counter Different in group msg %d of 2-way handshake!\n", (MsgType - EAPOL_PAIR_MSG_4)));
}
hex_dump("Receive replay counter ", pMsg->KeyDesc.ReplayCounter, LEN_KEY_DESC_REPLAY);
hex_dump("Current replay counter ", pEntry->R_Counter, LEN_KEY_DESC_REPLAY);
return FALSE;
}
// 2. Verify MIC except Pairwise Msg1
if (MsgType != EAPOL_PAIR_MSG_1)
{
UCHAR rcvd_mic[LEN_KEY_DESC_MIC];
// Record the received MIC for check later
NdisMoveMemory(rcvd_mic, pMsg->KeyDesc.KeyMic, LEN_KEY_DESC_MIC);
NdisZeroMemory(pMsg->KeyDesc.KeyMic, LEN_KEY_DESC_MIC);
if (pEntry->WepStatus == Ndis802_11Encryption2Enabled) // TKIP
{
hmac_md5(pEntry->PTK, LEN_EAP_MICK, (PUCHAR)pMsg, MsgLen, mic);
}
else if (pEntry->WepStatus == Ndis802_11Encryption3Enabled) // AES
{
HMAC_SHA1((PUCHAR)pMsg, MsgLen, pEntry->PTK, LEN_EAP_MICK, digest);
NdisMoveMemory(mic, digest, LEN_KEY_DESC_MIC);
}
if (!NdisEqualMemory(rcvd_mic, mic, LEN_KEY_DESC_MIC))
{
// send wireless event - for MIC different
if (pAd->CommonCfg.bWirelessEvent)
RTMPSendWirelessEvent(pAd, IW_MIC_DIFF_EVENT_FLAG, pEntry->Addr, pEntry->apidx, 0);
if (MsgType < EAPOL_GROUP_MSG_1)
{
DBGPRINT(RT_DEBUG_ERROR, ("MIC Different in pairwise msg %d of 4-way handshake!\n", MsgType));
}
else
{
DBGPRINT(RT_DEBUG_ERROR, ("MIC Different in group msg %d of 2-way handshake!\n", (MsgType - EAPOL_PAIR_MSG_4)));
}
hex_dump("Received MIC", rcvd_mic, LEN_KEY_DESC_MIC);
hex_dump("Desired MIC", mic, LEN_KEY_DESC_MIC);
return FALSE;
}
}
// Extract the context of the Key Data field if it exist
// The field in pairwise_msg_2_WPA1(WPA2) & pairwise_msg_3_WPA1 is un-encrypted.
// The field in group_msg_1_WPA1(WPA2) & pairwise_msg_3_WPA2 is encrypted.
if (pMsg->KeyDesc.KeyDataLen[1] > 0)
{
// Decrypt this field
if ((MsgType == EAPOL_PAIR_MSG_3 && bWPA2) || (MsgType == EAPOL_GROUP_MSG_1))
{
if(pEntry->WepStatus == Ndis802_11Encryption3Enabled)
{
// AES
AES_GTK_KEY_UNWRAP(&pEntry->PTK[16], KEYDATA, pMsg->KeyDesc.KeyDataLen[1],pMsg->KeyDesc.KeyData);
}
else
{
INT i;
UCHAR Key[32];
// Decrypt TKIP GTK
// Construct 32 bytes RC4 Key
NdisMoveMemory(Key, pMsg->KeyDesc.KeyIv, 16);
NdisMoveMemory(&Key[16], &pEntry->PTK[16], 16);
ARCFOUR_INIT(&pAd->PrivateInfo.WEPCONTEXT, Key, 32);
//discard first 256 bytes
for(i = 0; i < 256; i++)
ARCFOUR_BYTE(&pAd->PrivateInfo.WEPCONTEXT);
// Decrypt GTK. Becareful, there is no ICV to check the result is correct or not
ARCFOUR_DECRYPT(&pAd->PrivateInfo.WEPCONTEXT, KEYDATA, pMsg->KeyDesc.KeyData, pMsg->KeyDesc.KeyDataLen[1]);
}
if (!bWPA2 && (MsgType == EAPOL_GROUP_MSG_1))
GroupKeyIndex = EapolKeyInfo.KeyIndex;
}
else if ((MsgType == EAPOL_PAIR_MSG_2) || (MsgType == EAPOL_PAIR_MSG_3 && !bWPA2))
{
NdisMoveMemory(KEYDATA, pMsg->KeyDesc.KeyData, pMsg->KeyDesc.KeyDataLen[1]);
}
else
{
return TRUE;
}
// Parse Key Data field to
// 1. verify RSN IE for pairwise_msg_2_WPA1(WPA2) ,pairwise_msg_3_WPA1(WPA2)
// 2. verify KDE format for pairwise_msg_3_WPA2, group_msg_1_WPA2
// 3. update shared key for pairwise_msg_3_WPA2, group_msg_1_WPA1(WPA2)
if (!RTMPParseEapolKeyData(pAd, KEYDATA, pMsg->KeyDesc.KeyDataLen[1], GroupKeyIndex, MsgType, bWPA2, pEntry))
{
return FALSE;
}
}
return TRUE;
}
|