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   1 /*
   2  *************************************************************************
   3  * Ralink Tech Inc.
   4  * 5F., No.36, Taiyuan St., Jhubei City,
   5  * Hsinchu County 302,
   6  * Taiwan, R.O.C.
   7  *
   8  * (c) Copyright 2002-2007, Ralink Technology, Inc.
   9  *
  10  * This program is free software; you can redistribute it and/or modify  *
  11  * it under the terms of the GNU General Public License as published by  *
  12  * the Free Software Foundation; either version 2 of the License, or     *
  13  * (at your option) any later version.                                   *
  14  *                                                                       *
  15  * This program is distributed in the hope that it will be useful,       *
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  18  * GNU General Public License for more details.                          *
  19  *                                                                       *
  20  * You should have received a copy of the GNU General Public License     *
  21  * along with this program; if not, write to the                         *
  22  * Free Software Foundation, Inc.,                                       *
  23  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  24  *                                                                       *
  25  *************************************************************************
  26
  27         Module Name:
  28         sanity.c
  29
  30         Abstract:
  31
  32         Revision History:
  33         Who                     When                    What
  34         --------        ----------              ----------------------------------------------
  35         John Chang  2004-09-01      add WMM support
  36 */
  37 #include "../rt_config.h"
  38
  39
  40 extern UCHAR    CISCO_OUI[];
  41
  42 extern UCHAR    WPA_OUI[];
  43 extern UCHAR    RSN_OUI[];
  44 extern UCHAR    WME_INFO_ELEM[];
  45 extern UCHAR    WME_PARM_ELEM[];
  46 extern UCHAR    Ccx2QosInfo[];
  47 extern UCHAR    RALINK_OUI[];
  48 extern UCHAR    BROADCOM_OUI[];
  49 extern UCHAR    WPS_OUI[];
  50
  51 /*
  52     ==========================================================================
  53     Description:
  54         MLME message sanity check
  55     Return:
  56         TRUE if all parameters are OK, FALSE otherwise
  57
  58         IRQL = DISPATCH_LEVEL
  59
  60     ==========================================================================
  61  */
  62 BOOLEAN MlmeAddBAReqSanity(
  63     IN PRTMP_ADAPTER pAd,
  64     IN VOID *Msg,
  65     IN ULONG MsgLen,
  66     OUT PUCHAR pAddr2)
  67 {
  68     PMLME_ADDBA_REQ_STRUCT   pInfo;
  69
  70     pInfo = (MLME_ADDBA_REQ_STRUCT *)Msg;
  71
  72     if ((MsgLen != sizeof(MLME_ADDBA_REQ_STRUCT)))
  73     {
  74         DBGPRINT(RT_DEBUG_TRACE, ("MlmeAddBAReqSanity fail - message lenght not correct.\n"));
  75         return FALSE;
  76     }
  77
  78     if ((pInfo->Wcid >= MAX_LEN_OF_MAC_TABLE))
  79     {
  80         DBGPRINT(RT_DEBUG_TRACE, ("MlmeAddBAReqSanity fail - The peer Mac is not associated yet.\n"));
  81         return FALSE;
  82     }
  83
  84     if ((pInfo->pAddr[0]&0x01) == 0x01)
  85     {
  86         DBGPRINT(RT_DEBUG_TRACE, ("MlmeAddBAReqSanity fail - broadcast address not support BA\n"));
  87         return FALSE;
  88     }
  89
  90     return TRUE;
  91 }
  92
  93 /*
  94     ==========================================================================
  95     Description:
  96         MLME message sanity check
  97     Return:
  98         TRUE if all parameters are OK, FALSE otherwise
  99
 100         IRQL = DISPATCH_LEVEL
 101
 102     ==========================================================================
 103  */
 104 BOOLEAN MlmeDelBAReqSanity(
 105     IN PRTMP_ADAPTER pAd,
 106     IN VOID *Msg,
 107     IN ULONG MsgLen)
 108 {
 109         MLME_DELBA_REQ_STRUCT *pInfo;
 110         pInfo = (MLME_DELBA_REQ_STRUCT *)Msg;
 111
 112     if ((MsgLen != sizeof(MLME_DELBA_REQ_STRUCT)))
 113     {
 114         DBGPRINT(RT_DEBUG_ERROR, ("MlmeDelBAReqSanity fail - message lenght not correct.\n"));
 115         return FALSE;
 116     }
 117
 118     if ((pInfo->Wcid >= MAX_LEN_OF_MAC_TABLE))
 119     {
 120         DBGPRINT(RT_DEBUG_ERROR, ("MlmeDelBAReqSanity fail - The peer Mac is not associated yet.\n"));
 121         return FALSE;
 122     }
 123
 124     if ((pInfo->TID & 0xf0))
 125     {
 126         DBGPRINT(RT_DEBUG_ERROR, ("MlmeDelBAReqSanity fail - The peer TID is incorrect.\n"));
 127         return FALSE;
 128     }
 129
 130         if (NdisEqualMemory(pAd->MacTab.Content[pInfo->Wcid].Addr, pInfo->Addr, MAC_ADDR_LEN) == 0)
 131     {
 132         DBGPRINT(RT_DEBUG_ERROR, ("MlmeDelBAReqSanity fail - the peer addr dosen't exist.\n"));
 133         return FALSE;
 134     }
 135
 136     return TRUE;
 137 }
 138
 139 BOOLEAN PeerAddBAReqActionSanity(
 140     IN PRTMP_ADAPTER pAd,
 141     IN VOID *pMsg,
 142     IN ULONG MsgLen,
 143         OUT PUCHAR pAddr2)
 144 {
 145         PFRAME_802_11 pFrame = (PFRAME_802_11)pMsg;
 146         PFRAME_ADDBA_REQ pAddFrame;
 147         pAddFrame = (PFRAME_ADDBA_REQ)(pMsg);
 148         if (MsgLen < (sizeof(FRAME_ADDBA_REQ)))
 149         {
 150                 DBGPRINT(RT_DEBUG_ERROR,("PeerAddBAReqActionSanity: ADDBA Request frame length size = %ld incorrect\n", MsgLen));
 151                 return FALSE;
 152         }
 153         // we support immediate BA.
 154         *(USHORT *)(&pAddFrame->BaParm) = cpu2le16(*(USHORT *)(&pAddFrame->BaParm));
 155         pAddFrame->TimeOutValue = cpu2le16(pAddFrame->TimeOutValue);
 156         pAddFrame->BaStartSeq.word = cpu2le16(pAddFrame->BaStartSeq.word);
 157
 158         if (pAddFrame->BaParm.BAPolicy != IMMED_BA)
 159         {
 160                 DBGPRINT(RT_DEBUG_ERROR,("PeerAddBAReqActionSanity: ADDBA Request Ba Policy[%d] not support\n", pAddFrame->BaParm.BAPolicy));
 161                 DBGPRINT(RT_DEBUG_ERROR,("ADDBA Request. tid=%x, Bufsize=%x, AMSDUSupported=%x \n", pAddFrame->BaParm.TID, pAddFrame->BaParm.BufSize, pAddFrame->BaParm.AMSDUSupported));
 162                 return FALSE;
 163         }
 164
 165         // we support immediate BA.
 166         if (pAddFrame->BaParm.TID &0xfff0)
 167         {
 168                 DBGPRINT(RT_DEBUG_ERROR,("PeerAddBAReqActionSanity: ADDBA Request incorrect TID = %d\n", pAddFrame->BaParm.TID));
 169                 return FALSE;
 170         }
 171         COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2);
 172         return TRUE;
 173 }
 174
 175 BOOLEAN PeerAddBARspActionSanity(
 176     IN PRTMP_ADAPTER pAd,
 177     IN VOID *pMsg,
 178     IN ULONG MsgLen)
 179 {
 180         PFRAME_ADDBA_RSP pAddFrame;
 181
 182         pAddFrame = (PFRAME_ADDBA_RSP)(pMsg);
 183         if (MsgLen < (sizeof(FRAME_ADDBA_RSP)))
 184         {
 185                 DBGPRINT(RT_DEBUG_ERROR,("PeerAddBARspActionSanity: ADDBA Response frame length size = %ld incorrect\n", MsgLen));
 186                 return FALSE;
 187         }
 188         // we support immediate BA.
 189         *(USHORT *)(&pAddFrame->BaParm) = cpu2le16(*(USHORT *)(&pAddFrame->BaParm));
 190         pAddFrame->StatusCode = cpu2le16(pAddFrame->StatusCode);
 191         pAddFrame->TimeOutValue = cpu2le16(pAddFrame->TimeOutValue);
 192
 193         if (pAddFrame->BaParm.BAPolicy != IMMED_BA)
 194         {
 195                 DBGPRINT(RT_DEBUG_ERROR,("PeerAddBAReqActionSanity: ADDBA Response Ba Policy[%d] not support\n", pAddFrame->BaParm.BAPolicy));
 196                 return FALSE;
 197         }
 198
 199         // we support immediate BA.
 200         if (pAddFrame->BaParm.TID &0xfff0)
 201         {
 202                 DBGPRINT(RT_DEBUG_ERROR,("PeerAddBARspActionSanity: ADDBA Response incorrect TID = %d\n", pAddFrame->BaParm.TID));
 203                 return FALSE;
 204         }
 205         return TRUE;
 206
 207 }
 208
 209 BOOLEAN PeerDelBAActionSanity(
 210     IN PRTMP_ADAPTER pAd,
 211     IN UCHAR Wcid,
 212     IN VOID *pMsg,
 213     IN ULONG MsgLen )
 214 {
 215         //PFRAME_802_11 pFrame = (PFRAME_802_11)pMsg;
 216         PFRAME_DELBA_REQ  pDelFrame;
 217         if (MsgLen != (sizeof(FRAME_DELBA_REQ)))
 218                 return FALSE;
 219
 220         if (Wcid >= MAX_LEN_OF_MAC_TABLE)
 221                 return FALSE;
 222
 223         pDelFrame = (PFRAME_DELBA_REQ)(pMsg);
 224
 225         *(USHORT *)(&pDelFrame->DelbaParm) = cpu2le16(*(USHORT *)(&pDelFrame->DelbaParm));
 226         pDelFrame->ReasonCode = cpu2le16(pDelFrame->ReasonCode);
 227
 228         if (pDelFrame->DelbaParm.TID &0xfff0)
 229                 return FALSE;
 230
 231         return TRUE;
 232 }
 233
 234 /*
 235     ==========================================================================
 236     Description:
 237         MLME message sanity check
 238     Return:
 239         TRUE if all parameters are OK, FALSE otherwise
 240
 241         IRQL = DISPATCH_LEVEL
 242
 243     ==========================================================================
 244  */
 245 BOOLEAN PeerBeaconAndProbeRspSanity(
 246     IN PRTMP_ADAPTER pAd,
 247     IN VOID *Msg,
 248     IN ULONG MsgLen,
 249     IN UCHAR  MsgChannel,
 250     OUT PUCHAR pAddr2,
 251     OUT PUCHAR pBssid,
 252     OUT CHAR Ssid[],
 253     OUT UCHAR *pSsidLen,
 254     OUT UCHAR *pBssType,
 255     OUT USHORT *pBeaconPeriod,
 256     OUT UCHAR *pChannel,
 257     OUT UCHAR *pNewChannel,
 258     OUT LARGE_INTEGER *pTimestamp,
 259     OUT CF_PARM *pCfParm,
 260     OUT USHORT *pAtimWin,
 261     OUT USHORT *pCapabilityInfo,
 262     OUT UCHAR *pErp,
 263     OUT UCHAR *pDtimCount,
 264     OUT UCHAR *pDtimPeriod,
 265     OUT UCHAR *pBcastFlag,
 266     OUT UCHAR *pMessageToMe,
 267     OUT UCHAR SupRate[],
 268     OUT UCHAR *pSupRateLen,
 269     OUT UCHAR ExtRate[],
 270     OUT UCHAR *pExtRateLen,
 271     OUT UCHAR *pCkipFlag,
 272     OUT UCHAR *pAironetCellPowerLimit,
 273     OUT PEDCA_PARM       pEdcaParm,
 274     OUT PQBSS_LOAD_PARM  pQbssLoad,
 275     OUT PQOS_CAPABILITY_PARM pQosCapability,
 276     OUT ULONG *pRalinkIe,
 277     OUT UCHAR            *pHtCapabilityLen,
 278     OUT UCHAR            *pPreNHtCapabilityLen,
 279     OUT HT_CAPABILITY_IE *pHtCapability,
 280         OUT UCHAR                *AddHtInfoLen,
 281         OUT ADD_HT_INFO_IE *AddHtInfo,
 282         OUT UCHAR *NewExtChannelOffset,         // Ht extension channel offset(above or below)
 283     OUT USHORT *LengthVIE,
 284     OUT PNDIS_802_11_VARIABLE_IEs pVIE)
 285 {
 286     CHAR                                *Ptr;
 287         CHAR                            TimLen;
 288     PFRAME_802_11               pFrame;
 289     PEID_STRUCT         pEid;
 290     UCHAR                               SubType;
 291     UCHAR                               Sanity;
 292     //UCHAR                             ECWMin, ECWMax;
 293     //MAC_CSR9_STRUC            Csr9;
 294     ULONG                               Length = 0;
 295
 296         // For some 11a AP which didn't have DS_IE, we use two conditions to decide the channel
 297         //      1. If the AP is 11n enabled, then check the control channel.
 298         //      2. If the AP didn't have any info about channel, use the channel we received this frame as the channel. (May inaccuracy!!)
 299         UCHAR                   CtrlChannel = 0;
 300
 301     // Add for 3 necessary EID field check
 302     Sanity = 0;
 303
 304     *pAtimWin = 0;
 305     *pErp = 0;
 306     *pDtimCount = 0;
 307     *pDtimPeriod = 0;
 308     *pBcastFlag = 0;
 309     *pMessageToMe = 0;
 310     *pExtRateLen = 0;
 311     *pCkipFlag = 0;                             // Default of CkipFlag is 0
 312     *pAironetCellPowerLimit = 0xFF;  // Default of AironetCellPowerLimit is 0xFF
 313     *LengthVIE = 0;                                     // Set the length of VIE to init value 0
 314     *pHtCapabilityLen = 0;                                      // Set the length of VIE to init value 0
 315         if (pAd->OpMode == OPMODE_STA)
 316                 *pPreNHtCapabilityLen = 0;                                      // Set the length of VIE to init value 0
 317     *AddHtInfoLen = 0;                                  // Set the length of VIE to init value 0
 318     *pRalinkIe = 0;
 319     *pNewChannel = 0;
 320     *NewExtChannelOffset = 0xff;        //Default 0xff means no such IE
 321     pCfParm->bValid = FALSE;        // default: no IE_CF found
 322     pQbssLoad->bValid = FALSE;      // default: no IE_QBSS_LOAD found
 323     pEdcaParm->bValid = FALSE;      // default: no IE_EDCA_PARAMETER found
 324     pQosCapability->bValid = FALSE; // default: no IE_QOS_CAPABILITY found
 325
 326     pFrame = (PFRAME_802_11)Msg;
 327
 328     // get subtype from header
 329     SubType = (UCHAR)pFrame->Hdr.FC.SubType;
 330
 331     // get Addr2 and BSSID from header
 332     COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2);
 333     COPY_MAC_ADDR(pBssid, pFrame->Hdr.Addr3);
 334
 335     Ptr = pFrame->Octet;
 336     Length += LENGTH_802_11;
 337
 338     // get timestamp from payload and advance the pointer
 339     NdisMoveMemory(pTimestamp, Ptr, TIMESTAMP_LEN);
 340
 341         pTimestamp->u.LowPart = cpu2le32(pTimestamp->u.LowPart);
 342         pTimestamp->u.HighPart = cpu2le32(pTimestamp->u.HighPart);
 343
 344     Ptr += TIMESTAMP_LEN;
 345     Length += TIMESTAMP_LEN;
 346
 347     // get beacon interval from payload and advance the pointer
 348     NdisMoveMemory(pBeaconPeriod, Ptr, 2);
 349     Ptr += 2;
 350     Length += 2;
 351
 352     // get capability info from payload and advance the pointer
 353     NdisMoveMemory(pCapabilityInfo, Ptr, 2);
 354     Ptr += 2;
 355     Length += 2;
 356
 357     if (CAP_IS_ESS_ON(*pCapabilityInfo))
 358         *pBssType = BSS_INFRA;
 359     else
 360         *pBssType = BSS_ADHOC;
 361
 362     pEid = (PEID_STRUCT) Ptr;
 363
 364     // get variable fields from payload and advance the pointer
 365     while ((Length + 2 + pEid->Len) <= MsgLen)
 366     {
 367         //
 368         // Secure copy VIE to VarIE[MAX_VIE_LEN] didn't overflow.
 369         //
 370         if ((*LengthVIE + pEid->Len + 2) >= MAX_VIE_LEN)
 371         {
 372             DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - Variable IEs out of resource [len(=%d) > MAX_VIE_LEN(=%d)]\n",
 373                     (*LengthVIE + pEid->Len + 2), MAX_VIE_LEN));
 374             break;
 375         }
 376
 377         switch(pEid->Eid)
 378         {
 379             case IE_SSID:
 380                 // Already has one SSID EID in this beacon, ignore the second one
 381                 if (Sanity & 0x1)
 382                     break;
 383                 if(pEid->Len <= MAX_LEN_OF_SSID)
 384                 {
 385                     NdisMoveMemory(Ssid, pEid->Octet, pEid->Len);
 386                     *pSsidLen = pEid->Len;
 387                     Sanity |= 0x1;
 388                 }
 389                 else
 390                 {
 391                     DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_SSID (len=%d)\n",pEid->Len));
 392                     return FALSE;
 393                 }
 394                 break;
 395
 396             case IE_SUPP_RATES:
 397                 if(pEid->Len <= MAX_LEN_OF_SUPPORTED_RATES)
 398                 {
 399                     Sanity |= 0x2;
 400                     NdisMoveMemory(SupRate, pEid->Octet, pEid->Len);
 401                     *pSupRateLen = pEid->Len;
 402
 403                     // TODO: 2004-09-14 not a good design here, cause it exclude extra rates
 404                     // from ScanTab. We should report as is. And filter out unsupported
 405                     // rates in MlmeAux.
 406                     // Check against the supported rates
 407                     // RTMPCheckRates(pAd, SupRate, pSupRateLen);
 408                 }
 409                 else
 410                 {
 411                     DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_SUPP_RATES (len=%d)\n",pEid->Len));
 412                     return FALSE;
 413                 }
 414                 break;
 415
 416             case IE_HT_CAP:
 417                         if (pEid->Len >= SIZE_HT_CAP_IE)  //Note: allow extension.!!
 418                         {
 419                                 NdisMoveMemory(pHtCapability, pEid->Octet, sizeof(HT_CAPABILITY_IE));
 420                                 *pHtCapabilityLen = SIZE_HT_CAP_IE;     // Nnow we only support 26 bytes.
 421
 422                                 *(USHORT *)(&pHtCapability->HtCapInfo) = cpu2le16(*(USHORT *)(&pHtCapability->HtCapInfo));
 423                                 *(USHORT *)(&pHtCapability->ExtHtCapInfo) = cpu2le16(*(USHORT *)(&pHtCapability->ExtHtCapInfo));
 424
 425                                 {
 426                                         *pPreNHtCapabilityLen = 0;      // Nnow we only support 26 bytes.
 427
 428                                         Ptr = (PUCHAR) pVIE;
 429                                         NdisMoveMemory(Ptr + *LengthVIE, &pEid->Eid, pEid->Len + 2);
 430                                         *LengthVIE += (pEid->Len + 2);
 431                                 }
 432                         }
 433                         else
 434                         {
 435                                 DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - wrong IE_HT_CAP. pEid->Len = %d\n", pEid->Len));
 436                         }
 437
 438                 break;
 439             case IE_ADD_HT:
 440                         if (pEid->Len >= sizeof(ADD_HT_INFO_IE))
 441                         {
 442                                 // This IE allows extension, but we can ignore extra bytes beyond our knowledge , so only
 443                                 // copy first sizeof(ADD_HT_INFO_IE)
 444                                 NdisMoveMemory(AddHtInfo, pEid->Octet, sizeof(ADD_HT_INFO_IE));
 445                                 *AddHtInfoLen = SIZE_ADD_HT_INFO_IE;
 446
 447                                 CtrlChannel = AddHtInfo->ControlChan;
 448
 449                                 *(USHORT *)(&AddHtInfo->AddHtInfo2) = cpu2le16(*(USHORT *)(&AddHtInfo->AddHtInfo2));
 450                                 *(USHORT *)(&AddHtInfo->AddHtInfo3) = cpu2le16(*(USHORT *)(&AddHtInfo->AddHtInfo3));
 451
 452                                 {
 453                                         Ptr = (PUCHAR) pVIE;
 454                                         NdisMoveMemory(Ptr + *LengthVIE, &pEid->Eid, pEid->Len + 2);
 455                                         *LengthVIE += (pEid->Len + 2);
 456                                 }
 457                         }
 458                         else
 459                         {
 460                                 DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - wrong IE_ADD_HT. \n"));
 461                         }
 462
 463                 break;
 464             case IE_SECONDARY_CH_OFFSET:
 465                         if (pEid->Len == 1)
 466                         {
 467                                 *NewExtChannelOffset = pEid->Octet[0];
 468                         }
 469                         else
 470                         {
 471                                 DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - wrong IE_SECONDARY_CH_OFFSET. \n"));
 472                         }
 473
 474                 break;
 475             case IE_FH_PARM:
 476                 DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity(IE_FH_PARM) \n"));
 477                 break;
 478
 479             case IE_DS_PARM:
 480                 if(pEid->Len == 1)
 481                 {
 482                     *pChannel = *pEid->Octet;
 483
 484                                         {
 485                                                 if (ChannelSanity(pAd, *pChannel) == 0)
 486                                                 {
 487
 488                                                         return FALSE;
 489                                                 }
 490                                         }
 491
 492                     Sanity |= 0x4;
 493                 }
 494                 else
 495                 {
 496                     DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_DS_PARM (len=%d)\n",pEid->Len));
 497                     return FALSE;
 498                 }
 499                 break;
 500
 501             case IE_CF_PARM:
 502                 if(pEid->Len == 6)
 503                 {
 504                     pCfParm->bValid = TRUE;
 505                     pCfParm->CfpCount = pEid->Octet[0];
 506                     pCfParm->CfpPeriod = pEid->Octet[1];
 507                     pCfParm->CfpMaxDuration = pEid->Octet[2] + 256 * pEid->Octet[3];
 508                     pCfParm->CfpDurRemaining = pEid->Octet[4] + 256 * pEid->Octet[5];
 509                 }
 510                 else
 511                 {
 512                     DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_CF_PARM\n"));
 513                     return FALSE;
 514                 }
 515                 break;
 516
 517             case IE_IBSS_PARM:
 518                 if(pEid->Len == 2)
 519                 {
 520                     NdisMoveMemory(pAtimWin, pEid->Octet, pEid->Len);
 521                 }
 522                 else
 523                 {
 524                     DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_IBSS_PARM\n"));
 525                     return FALSE;
 526                 }
 527                 break;
 528
 529             case IE_TIM:
 530                 if(INFRA_ON(pAd) && SubType == SUBTYPE_BEACON)
 531                 {
 532                     GetTimBit((PUCHAR)pEid, pAd->StaActive.Aid, &TimLen, pBcastFlag, pDtimCount, pDtimPeriod, pMessageToMe);
 533                 }
 534                 break;
 535
 536             case IE_CHANNEL_SWITCH_ANNOUNCEMENT:
 537                 if(pEid->Len == 3)
 538                 {
 539                         *pNewChannel = pEid->Octet[1];  //extract new channel number
 540                 }
 541                 break;
 542
 543             // New for WPA
 544             // CCX v2 has the same IE, we need to parse that too
 545             // Wifi WMM use the same IE vale, need to parse that too
 546             // case IE_WPA:
 547             case IE_VENDOR_SPECIFIC:
 548                 // Check the OUI version, filter out non-standard usage
 549                 if (NdisEqualMemory(pEid->Octet, RALINK_OUI, 3) && (pEid->Len == 7))
 550                 {
 551                     //*pRalinkIe = pEid->Octet[3];
 552                     if (pEid->Octet[3] != 0)
 553                                         *pRalinkIe = pEid->Octet[3];
 554                                 else
 555                                         *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.
 556                 }
 557                 // This HT IE is before IEEE draft set HT IE value.2006-09-28 by Jan.
 558
 559                 // Other vendors had production before IE_HT_CAP value is assigned. To backward support those old-firmware AP,
 560                 // Check broadcom-defiend pre-802.11nD1.0 OUI for HT related IE, including HT Capatilities IE and HT Information IE
 561                 else if ((*pHtCapabilityLen == 0) && NdisEqualMemory(pEid->Octet, PRE_N_HT_OUI, 3) && (pEid->Len >= 4) && (pAd->OpMode == OPMODE_STA))
 562                 {
 563                     if ((pEid->Octet[3] == OUI_PREN_HT_CAP) && (pEid->Len >= 30) && (*pHtCapabilityLen == 0))
 564                     {
 565                         NdisMoveMemory(pHtCapability, &pEid->Octet[4], sizeof(HT_CAPABILITY_IE));
 566                         *pPreNHtCapabilityLen = SIZE_HT_CAP_IE;
 567                     }
 568
 569                     if ((pEid->Octet[3] == OUI_PREN_ADD_HT) && (pEid->Len >= 26))
 570                     {
 571                         NdisMoveMemory(AddHtInfo, &pEid->Octet[4], sizeof(ADD_HT_INFO_IE));
 572                         *AddHtInfoLen = SIZE_ADD_HT_INFO_IE;
 573                     }
 574                 }
 575                 else if (NdisEqualMemory(pEid->Octet, WPA_OUI, 4))
 576                 {
 577                     // Copy to pVIE which will report to microsoft bssid list.
 578                     Ptr = (PUCHAR) pVIE;
 579                     NdisMoveMemory(Ptr + *LengthVIE, &pEid->Eid, pEid->Len + 2);
 580                     *LengthVIE += (pEid->Len + 2);
 581                 }
 582                 else if (NdisEqualMemory(pEid->Octet, WME_PARM_ELEM, 6) && (pEid->Len == 24))
 583                 {
 584                     PUCHAR ptr;
 585                     int i;
 586
 587                     // parsing EDCA parameters
 588                     pEdcaParm->bValid          = TRUE;
 589                     pEdcaParm->bQAck           = FALSE; // pEid->Octet[0] & 0x10;
 590                     pEdcaParm->bQueueRequest   = FALSE; // pEid->Octet[0] & 0x20;
 591                     pEdcaParm->bTxopRequest    = FALSE; // pEid->Octet[0] & 0x40;
 592                     pEdcaParm->EdcaUpdateCount = pEid->Octet[6] & 0x0f;
 593                     pEdcaParm->bAPSDCapable    = (pEid->Octet[6] & 0x80) ? 1 : 0;
 594                     ptr = &pEid->Octet[8];
 595                     for (i=0; i<4; i++)
 596                     {
 597                         UCHAR aci = (*ptr & 0x60) >> 5; // b5~6 is AC INDEX
 598                         pEdcaParm->bACM[aci]  = (((*ptr) & 0x10) == 0x10);   // b5 is ACM
 599                         pEdcaParm->Aifsn[aci] = (*ptr) & 0x0f;               // b0~3 is AIFSN
 600                         pEdcaParm->Cwmin[aci] = *(ptr+1) & 0x0f;             // b0~4 is Cwmin
 601                         pEdcaParm->Cwmax[aci] = *(ptr+1) >> 4;               // b5~8 is Cwmax
 602                         pEdcaParm->Txop[aci]  = *(ptr+2) + 256 * (*(ptr+3)); // in unit of 32-us
 603                         ptr += 4; // point to next AC
 604                     }
 605                 }
 606                 else if (NdisEqualMemory(pEid->Octet, WME_INFO_ELEM, 6) && (pEid->Len == 7))
 607                 {
 608                     // parsing EDCA parameters
 609                     pEdcaParm->bValid          = TRUE;
 610                     pEdcaParm->bQAck           = FALSE; // pEid->Octet[0] & 0x10;
 611                     pEdcaParm->bQueueRequest   = FALSE; // pEid->Octet[0] & 0x20;
 612                     pEdcaParm->bTxopRequest    = FALSE; // pEid->Octet[0] & 0x40;
 613                     pEdcaParm->EdcaUpdateCount = pEid->Octet[6] & 0x0f;
 614                     pEdcaParm->bAPSDCapable    = (pEid->Octet[6] & 0x80) ? 1 : 0;
 615
 616                     // use default EDCA parameter
 617                     pEdcaParm->bACM[QID_AC_BE]  = 0;
 618                     pEdcaParm->Aifsn[QID_AC_BE] = 3;
 619                     pEdcaParm->Cwmin[QID_AC_BE] = CW_MIN_IN_BITS;
 620                     pEdcaParm->Cwmax[QID_AC_BE] = CW_MAX_IN_BITS;
 621                     pEdcaParm->Txop[QID_AC_BE]  = 0;
 622
 623                     pEdcaParm->bACM[QID_AC_BK]  = 0;
 624                     pEdcaParm->Aifsn[QID_AC_BK] = 7;
 625                     pEdcaParm->Cwmin[QID_AC_BK] = CW_MIN_IN_BITS;
 626                     pEdcaParm->Cwmax[QID_AC_BK] = CW_MAX_IN_BITS;
 627                     pEdcaParm->Txop[QID_AC_BK]  = 0;
 628
 629                     pEdcaParm->bACM[QID_AC_VI]  = 0;
 630                     pEdcaParm->Aifsn[QID_AC_VI] = 2;
 631                     pEdcaParm->Cwmin[QID_AC_VI] = CW_MIN_IN_BITS-1;
 632                     pEdcaParm->Cwmax[QID_AC_VI] = CW_MAX_IN_BITS;
 633                     pEdcaParm->Txop[QID_AC_VI]  = 96;   // AC_VI: 96*32us ~= 3ms
 634
 635                     pEdcaParm->bACM[QID_AC_VO]  = 0;
 636                     pEdcaParm->Aifsn[QID_AC_VO] = 2;
 637                     pEdcaParm->Cwmin[QID_AC_VO] = CW_MIN_IN_BITS-2;
 638                     pEdcaParm->Cwmax[QID_AC_VO] = CW_MAX_IN_BITS-1;
 639                     pEdcaParm->Txop[QID_AC_VO]  = 48;   // AC_VO: 48*32us ~= 1.5ms
 640                 }
 641                 break;
 642
 643             case IE_EXT_SUPP_RATES:
 644                 if (pEid->Len <= MAX_LEN_OF_SUPPORTED_RATES)
 645                 {
 646                     NdisMoveMemory(ExtRate, pEid->Octet, pEid->Len);
 647                     *pExtRateLen = pEid->Len;
 648
 649                     // TODO: 2004-09-14 not a good design here, cause it exclude extra rates
 650                     // from ScanTab. We should report as is. And filter out unsupported
 651                     // rates in MlmeAux.
 652                     // Check against the supported rates
 653                     // RTMPCheckRates(pAd, ExtRate, pExtRateLen);
 654                 }
 655                 break;
 656
 657             case IE_ERP:
 658                 if (pEid->Len == 1)
 659                 {
 660                     *pErp = (UCHAR)pEid->Octet[0];
 661                 }
 662                 break;
 663
 664             case IE_AIRONET_CKIP:
 665                 // 0. Check Aironet IE length, it must be larger or equal to 28
 666                 // Cisco AP350 used length as 28
 667                 // Cisco AP12XX used length as 30
 668                 if (pEid->Len < (CKIP_NEGOTIATION_LENGTH - 2))
 669                     break;
 670
 671                 // 1. Copy CKIP flag byte to buffer for process
 672                 *pCkipFlag = *(pEid->Octet + 8);
 673                 break;
 674
 675             case IE_AP_TX_POWER:
 676                 // AP Control of Client Transmit Power
 677                 //0. Check Aironet IE length, it must be 6
 678                 if (pEid->Len != 0x06)
 679                     break;
 680
 681                 // Get cell power limit in dBm
 682                 if (NdisEqualMemory(pEid->Octet, CISCO_OUI, 3) == 1)
 683                     *pAironetCellPowerLimit = *(pEid->Octet + 4);
 684                 break;
 685
 686             // WPA2 & 802.11i RSN
 687             case IE_RSN:
 688                 // There is no OUI for version anymore, check the group cipher OUI before copying
 689                 if (RTMPEqualMemory(pEid->Octet + 2, RSN_OUI, 3))
 690                 {
 691                     // Copy to pVIE which will report to microsoft bssid list.
 692                     Ptr = (PUCHAR) pVIE;
 693                     NdisMoveMemory(Ptr + *LengthVIE, &pEid->Eid, pEid->Len + 2);
 694                     *LengthVIE += (pEid->Len + 2);
 695                 }
 696                 break;
 697
 698             default:
 699                 break;
 700         }
 701
 702         Length = Length + 2 + pEid->Len;  // Eid[1] + Len[1]+ content[Len]
 703         pEid = (PEID_STRUCT)((UCHAR*)pEid + 2 + pEid->Len);
 704     }
 705
 706     // For some 11a AP. it did not have the channel EID, patch here
 707         {
 708                 UCHAR LatchRfChannel = MsgChannel;
 709                 if ((pAd->LatchRfRegs.Channel > 14) && ((Sanity & 0x4) == 0))
 710                 {
 711                         if (CtrlChannel != 0)
 712                                 *pChannel = CtrlChannel;
 713                         else
 714                                 *pChannel = LatchRfChannel;
 715                         Sanity |= 0x4;
 716                 }
 717         }
 718
 719         if (Sanity != 0x7)
 720         {
 721                 DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - missing field, Sanity=0x%02x\n", Sanity));
 722                 return FALSE;
 723         }
 724         else
 725         {
 726                 return TRUE;
 727         }
 728
 729 }
 730
 731 /*
 732     ==========================================================================
 733     Description:
 734         MLME message sanity check
 735     Return:
 736         TRUE if all parameters are OK, FALSE otherwise
 737     ==========================================================================
 738  */
 739 BOOLEAN MlmeScanReqSanity(
 740         IN PRTMP_ADAPTER pAd,
 741         IN VOID *Msg,
 742         IN ULONG MsgLen,
 743         OUT UCHAR *pBssType,
 744         OUT CHAR Ssid[],
 745         OUT UCHAR *pSsidLen,
 746         OUT UCHAR *pScanType)
 747 {
 748         MLME_SCAN_REQ_STRUCT *Info;
 749
 750         Info = (MLME_SCAN_REQ_STRUCT *)(Msg);
 751         *pBssType = Info->BssType;
 752         *pSsidLen = Info->SsidLen;
 753         NdisMoveMemory(Ssid, Info->Ssid, *pSsidLen);
 754         *pScanType = Info->ScanType;
 755
 756         if ((*pBssType == BSS_INFRA || *pBssType == BSS_ADHOC || *pBssType == BSS_ANY)
 757                 && (*pScanType == SCAN_ACTIVE || *pScanType == SCAN_PASSIVE
 758                 || *pScanType == SCAN_CISCO_PASSIVE || *pScanType == SCAN_CISCO_ACTIVE
 759                 || *pScanType == SCAN_CISCO_CHANNEL_LOAD || *pScanType == SCAN_CISCO_NOISE
 760                 ))
 761         {
 762                 return TRUE;
 763         }
 764         else
 765         {
 766                 DBGPRINT(RT_DEBUG_TRACE, ("MlmeScanReqSanity fail - wrong BssType or ScanType\n"));
 767                 return FALSE;
 768         }
 769 }
 770
 771 // IRQL = DISPATCH_LEVEL
 772 UCHAR ChannelSanity(
 773     IN PRTMP_ADAPTER pAd,
 774     IN UCHAR channel)
 775 {
 776     int i;
 777
 778     for (i = 0; i < pAd->ChannelListNum; i ++)
 779     {
 780         if (channel == pAd->ChannelList[i].Channel)
 781             return 1;
 782     }
 783     return 0;
 784 }
 785
 786 /*
 787     ==========================================================================
 788     Description:
 789         MLME message sanity check
 790     Return:
 791         TRUE if all parameters are OK, FALSE otherwise
 792
 793         IRQL = DISPATCH_LEVEL
 794
 795     ==========================================================================
 796  */
 797 BOOLEAN PeerDeauthSanity(
 798     IN PRTMP_ADAPTER pAd,
 799     IN VOID *Msg,
 800     IN ULONG MsgLen,
 801     OUT PUCHAR pAddr2,
 802     OUT USHORT *pReason)
 803 {
 804     PFRAME_802_11 pFrame = (PFRAME_802_11)Msg;
 805
 806     COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2);
 807     NdisMoveMemory(pReason, &pFrame->Octet[0], 2);
 808
 809     return TRUE;
 810 }
 811
 812 /*
 813     ==========================================================================
 814     Description:
 815         MLME message sanity check
 816     Return:
 817         TRUE if all parameters are OK, FALSE otherwise
 818
 819         IRQL = DISPATCH_LEVEL
 820
 821     ==========================================================================
 822  */
 823 BOOLEAN PeerAuthSanity(
 824     IN PRTMP_ADAPTER pAd,
 825     IN VOID *Msg,
 826     IN ULONG MsgLen,
 827     OUT PUCHAR pAddr,
 828     OUT USHORT *pAlg,
 829     OUT USHORT *pSeq,
 830     OUT USHORT *pStatus,
 831     CHAR *pChlgText)
 832 {
 833     PFRAME_802_11 pFrame = (PFRAME_802_11)Msg;
 834
 835     COPY_MAC_ADDR(pAddr,   pFrame->Hdr.Addr2);
 836     NdisMoveMemory(pAlg,    &pFrame->Octet[0], 2);
 837     NdisMoveMemory(pSeq,    &pFrame->Octet[2], 2);
 838     NdisMoveMemory(pStatus, &pFrame->Octet[4], 2);
 839
 840     if ((*pAlg == Ndis802_11AuthModeOpen)
 841       )
 842     {
 843         if (*pSeq == 1 || *pSeq == 2)
 844         {
 845             return TRUE;
 846         }
 847         else
 848         {
 849             DBGPRINT(RT_DEBUG_TRACE, ("PeerAuthSanity fail - wrong Seg#\n"));
 850             return FALSE;
 851         }
 852     }
 853     else if (*pAlg == Ndis802_11AuthModeShared)
 854     {
 855         if (*pSeq == 1 || *pSeq == 4)
 856         {
 857             return TRUE;
 858         }
 859         else if (*pSeq == 2 || *pSeq == 3)
 860         {
 861             NdisMoveMemory(pChlgText, &pFrame->Octet[8], CIPHER_TEXT_LEN);
 862             return TRUE;
 863         }
 864         else
 865         {
 866             DBGPRINT(RT_DEBUG_TRACE, ("PeerAuthSanity fail - wrong Seg#\n"));
 867             return FALSE;
 868         }
 869     }
 870     else
 871     {
 872         DBGPRINT(RT_DEBUG_TRACE, ("PeerAuthSanity fail - wrong algorithm\n"));
 873         return FALSE;
 874     }
 875 }
 876
 877 /*
 878     ==========================================================================
 879     Description:
 880         MLME message sanity check
 881     Return:
 882         TRUE if all parameters are OK, FALSE otherwise
 883     ==========================================================================
 884  */
 885 BOOLEAN MlmeAuthReqSanity(
 886     IN PRTMP_ADAPTER pAd,
 887     IN VOID *Msg,
 888     IN ULONG MsgLen,
 889     OUT PUCHAR pAddr,
 890     OUT ULONG *pTimeout,
 891     OUT USHORT *pAlg)
 892 {
 893     MLME_AUTH_REQ_STRUCT *pInfo;
 894
 895     pInfo  = (MLME_AUTH_REQ_STRUCT *)Msg;
 896     COPY_MAC_ADDR(pAddr, pInfo->Addr);
 897     *pTimeout = pInfo->Timeout;
 898     *pAlg = pInfo->Alg;
 899
 900     if (((*pAlg == Ndis802_11AuthModeShared) ||(*pAlg == Ndis802_11AuthModeOpen)
 901         ) &&
 902         ((*pAddr & 0x01) == 0))
 903     {
 904         return TRUE;
 905     }
 906     else
 907     {
 908         DBGPRINT(RT_DEBUG_TRACE, ("MlmeAuthReqSanity fail - wrong algorithm\n"));
 909         return FALSE;
 910     }
 911 }
 912
 913 /*
 914     ==========================================================================
 915     Description:
 916         MLME message sanity check
 917     Return:
 918         TRUE if all parameters are OK, FALSE otherwise
 919
 920         IRQL = DISPATCH_LEVEL
 921
 922     ==========================================================================
 923  */
 924 BOOLEAN MlmeAssocReqSanity(
 925     IN PRTMP_ADAPTER pAd,
 926     IN VOID *Msg,
 927     IN ULONG MsgLen,
 928     OUT PUCHAR pApAddr,
 929     OUT USHORT *pCapabilityInfo,
 930     OUT ULONG *pTimeout,
 931     OUT USHORT *pListenIntv)
 932 {
 933     MLME_ASSOC_REQ_STRUCT *pInfo;
 934
 935     pInfo = (MLME_ASSOC_REQ_STRUCT *)Msg;
 936     *pTimeout = pInfo->Timeout;                             // timeout
 937     COPY_MAC_ADDR(pApAddr, pInfo->Addr);                   // AP address
 938     *pCapabilityInfo = pInfo->CapabilityInfo;               // capability info
 939     *pListenIntv = pInfo->ListenIntv;
 940
 941     return TRUE;
 942 }
 943
 944 /*
 945     ==========================================================================
 946     Description:
 947         MLME message sanity check
 948     Return:
 949         TRUE if all parameters are OK, FALSE otherwise
 950
 951         IRQL = DISPATCH_LEVEL
 952
 953     ==========================================================================
 954  */
 955 BOOLEAN PeerDisassocSanity(
 956     IN PRTMP_ADAPTER pAd,
 957     IN VOID *Msg,
 958     IN ULONG MsgLen,
 959     OUT PUCHAR pAddr2,
 960     OUT USHORT *pReason)
 961 {
 962     PFRAME_802_11 pFrame = (PFRAME_802_11)Msg;
 963
 964     COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2);
 965     NdisMoveMemory(pReason, &pFrame->Octet[0], 2);
 966
 967     return TRUE;
 968 }
 969
 970 /*
 971         ========================================================================
 972         Routine Description:
 973                 Sanity check NetworkType (11b, 11g or 11a)
 974
 975         Arguments:
 976                 pBss - Pointer to BSS table.
 977
 978         Return Value:
 979         Ndis802_11DS .......(11b)
 980         Ndis802_11OFDM24....(11g)
 981         Ndis802_11OFDM5.....(11a)
 982
 983         IRQL = DISPATCH_LEVEL
 984
 985         ========================================================================
 986 */
 987 NDIS_802_11_NETWORK_TYPE NetworkTypeInUseSanity(
 988     IN PBSS_ENTRY pBss)
 989 {
 990         NDIS_802_11_NETWORK_TYPE        NetWorkType;
 991         UCHAR                                           rate, i;
 992
 993         NetWorkType = Ndis802_11DS;
 994
 995         if (pBss->Channel <= 14)
 996         {
 997                 //
 998                 // First check support Rate.
 999                 //
1000                 for (i = 0; i < pBss->SupRateLen; i++)
1001                 {
1002                         rate = pBss->SupRate[i] & 0x7f; // Mask out basic rate set bit
1003                         if ((rate == 2) || (rate == 4) || (rate == 11) || (rate == 22))
1004                         {
1005                                 continue;
1006                         }
1007                         else
1008                         {
1009                                 //
1010                                 // Otherwise (even rate > 108) means Ndis802_11OFDM24
1011                                 //
1012                                 NetWorkType = Ndis802_11OFDM24;
1013                                 break;
1014                         }
1015                 }
1016
1017                 //
1018                 // Second check Extend Rate.
1019                 //
1020                 if (NetWorkType != Ndis802_11OFDM24)
1021                 {
1022                         for (i = 0; i < pBss->ExtRateLen; i++)
1023                         {
1024                                 rate = pBss->SupRate[i] & 0x7f; // Mask out basic rate set bit
1025                                 if ((rate == 2) || (rate == 4) || (rate == 11) || (rate == 22))
1026                                 {
1027                                         continue;
1028                                 }
1029                                 else
1030                                 {
1031                                         //
1032                                         // Otherwise (even rate > 108) means Ndis802_11OFDM24
1033                                         //
1034                                         NetWorkType = Ndis802_11OFDM24;
1035                                         break;
1036                                 }
1037                         }
1038                 }
1039         }
1040         else
1041         {
1042                 NetWorkType = Ndis802_11OFDM5;
1043         }
1044
1045     if (pBss->HtCapabilityLen != 0)
1046     {
1047         if (NetWorkType == Ndis802_11OFDM5)
1048             NetWorkType = Ndis802_11OFDM5_N;
1049         else
1050             NetWorkType = Ndis802_11OFDM24_N;
1051     }
1052
1053         return NetWorkType;
1054 }
1055
1056 /*
1057     ==========================================================================
1058     Description:
1059         WPA message sanity check
1060     Return:
1061         TRUE if all parameters are OK, FALSE otherwise
1062     ==========================================================================
1063  */
1064 BOOLEAN PeerWpaMessageSanity(
1065     IN  PRTMP_ADAPTER           pAd,
1066     IN  PEAPOL_PACKET           pMsg,
1067     IN  ULONG                           MsgLen,
1068     IN  UCHAR                           MsgType,
1069     IN  MAC_TABLE_ENTRY         *pEntry)
1070 {
1071         UCHAR                   mic[LEN_KEY_DESC_MIC], digest[80], KEYDATA[MAX_LEN_OF_RSNIE];
1072         BOOLEAN                 bReplayDiff = FALSE;
1073         BOOLEAN                 bWPA2 = FALSE;
1074         KEY_INFO                EapolKeyInfo;
1075         UCHAR                   GroupKeyIndex = 0;
1076
1077
1078         NdisZeroMemory(mic, sizeof(mic));
1079         NdisZeroMemory(digest, sizeof(digest));
1080         NdisZeroMemory(KEYDATA, sizeof(KEYDATA));
1081         NdisZeroMemory((PUCHAR)&EapolKeyInfo, sizeof(EapolKeyInfo));
1082
1083         NdisMoveMemory((PUCHAR)&EapolKeyInfo, (PUCHAR)&pMsg->KeyDesc.KeyInfo, sizeof(KEY_INFO));
1084
1085         *((USHORT *)&EapolKeyInfo) = cpu2le16(*((USHORT *)&EapolKeyInfo));
1086
1087         // Choose WPA2 or not
1088         if ((pEntry->AuthMode == Ndis802_11AuthModeWPA2) || (pEntry->AuthMode == Ndis802_11AuthModeWPA2PSK))
1089                 bWPA2 = TRUE;
1090
1091         // 0. Check MsgType
1092         if ((MsgType > EAPOL_GROUP_MSG_2) || (MsgType < EAPOL_PAIR_MSG_1))
1093         {
1094                 DBGPRINT(RT_DEBUG_ERROR, ("The message type is invalid(%d)! \n", MsgType));
1095                 return FALSE;
1096         }
1097
1098         // 1. Replay counter check
1099         if (MsgType == EAPOL_PAIR_MSG_1 || MsgType == EAPOL_PAIR_MSG_3 || MsgType == EAPOL_GROUP_MSG_1) // For supplicant
1100     {
1101         // First validate replay counter, only accept message with larger replay counter.
1102                 // Let equal pass, some AP start with all zero replay counter
1103                 UCHAR   ZeroReplay[LEN_KEY_DESC_REPLAY];
1104
1105         NdisZeroMemory(ZeroReplay, LEN_KEY_DESC_REPLAY);
1106                 if ((RTMPCompareMemory(pMsg->KeyDesc.ReplayCounter, pEntry->R_Counter, LEN_KEY_DESC_REPLAY) != 1) &&
1107                         (RTMPCompareMemory(pMsg->KeyDesc.ReplayCounter, ZeroReplay, LEN_KEY_DESC_REPLAY) != 0))
1108         {
1109                         bReplayDiff = TRUE;
1110         }
1111         }
1112         else if (MsgType == EAPOL_PAIR_MSG_2 || MsgType == EAPOL_PAIR_MSG_4 || MsgType == EAPOL_GROUP_MSG_2)    // For authenticator
1113         {
1114                 // check Replay Counter coresponds to MSG from authenticator, otherwise discard
1115         if (!NdisEqualMemory(pMsg->KeyDesc.ReplayCounter, pEntry->R_Counter, LEN_KEY_DESC_REPLAY))
1116         {
1117                         bReplayDiff = TRUE;
1118         }
1119         }
1120
1121         // Replay Counter different condition
1122         if (bReplayDiff)
1123         {
1124                 // send wireless event - for replay counter different
1125                 if (pAd->CommonCfg.bWirelessEvent)
1126                         RTMPSendWirelessEvent(pAd, IW_REPLAY_COUNTER_DIFF_EVENT_FLAG, pEntry->Addr, pEntry->apidx, 0);
1127
1128                 if (MsgType < EAPOL_GROUP_MSG_1)
1129                 {
1130                 DBGPRINT(RT_DEBUG_ERROR, ("Replay Counter Different in pairwise msg %d of 4-way handshake!\n", MsgType));
1131                 }
1132                 else
1133                 {
1134                         DBGPRINT(RT_DEBUG_ERROR, ("Replay Counter Different in group msg %d of 2-way handshake!\n", (MsgType - EAPOL_PAIR_MSG_4)));
1135                 }
1136
1137                 hex_dump("Receive replay counter ", pMsg->KeyDesc.ReplayCounter, LEN_KEY_DESC_REPLAY);
1138                 hex_dump("Current replay counter ", pEntry->R_Counter, LEN_KEY_DESC_REPLAY);
1139         return FALSE;
1140         }
1141
1142         // 2. Verify MIC except Pairwise Msg1
1143         if (MsgType != EAPOL_PAIR_MSG_1)
1144         {
1145                 UCHAR                   rcvd_mic[LEN_KEY_DESC_MIC];
1146
1147                 // Record the received MIC for check later
1148                 NdisMoveMemory(rcvd_mic, pMsg->KeyDesc.KeyMic, LEN_KEY_DESC_MIC);
1149                 NdisZeroMemory(pMsg->KeyDesc.KeyMic, LEN_KEY_DESC_MIC);
1150
1151         if (pEntry->WepStatus == Ndis802_11Encryption2Enabled)  // TKIP
1152         {
1153             hmac_md5(pEntry->PTK, LEN_EAP_MICK, (PUCHAR)pMsg, MsgLen, mic);
1154         }
1155         else if (pEntry->WepStatus == Ndis802_11Encryption3Enabled)     // AES
1156         {
1157             HMAC_SHA1((PUCHAR)pMsg, MsgLen, pEntry->PTK, LEN_EAP_MICK, digest);
1158             NdisMoveMemory(mic, digest, LEN_KEY_DESC_MIC);
1159         }
1160
1161         if (!NdisEqualMemory(rcvd_mic, mic, LEN_KEY_DESC_MIC))
1162         {
1163                         // send wireless event - for MIC different
1164                         if (pAd->CommonCfg.bWirelessEvent)
1165                                 RTMPSendWirelessEvent(pAd, IW_MIC_DIFF_EVENT_FLAG, pEntry->Addr, pEntry->apidx, 0);
1166
1167                         if (MsgType < EAPOL_GROUP_MSG_1)
1168                         {
1169                 DBGPRINT(RT_DEBUG_ERROR, ("MIC Different in pairwise msg %d of 4-way handshake!\n", MsgType));
1170                         }
1171                         else
1172                         {
1173                                 DBGPRINT(RT_DEBUG_ERROR, ("MIC Different in group msg %d of 2-way handshake!\n", (MsgType - EAPOL_PAIR_MSG_4)));
1174                         }
1175
1176                         hex_dump("Received MIC", rcvd_mic, LEN_KEY_DESC_MIC);
1177                         hex_dump("Desired  MIC", mic, LEN_KEY_DESC_MIC);
1178
1179                         return FALSE;
1180         }
1181         }
1182
1183         // Extract the context of the Key Data field if it exist
1184         // The field in pairwise_msg_2_WPA1(WPA2) & pairwise_msg_3_WPA1 is un-encrypted.
1185         // The field in group_msg_1_WPA1(WPA2) & pairwise_msg_3_WPA2 is encrypted.
1186         if (pMsg->KeyDesc.KeyDataLen[1] > 0)
1187         {
1188                 // Decrypt this field
1189                 if ((MsgType == EAPOL_PAIR_MSG_3 && bWPA2) || (MsgType == EAPOL_GROUP_MSG_1))
1190                 {
1191                         if(pEntry->WepStatus == Ndis802_11Encryption3Enabled)
1192                         {
1193                                 // AES
1194                                 AES_GTK_KEY_UNWRAP(&pEntry->PTK[16], KEYDATA, pMsg->KeyDesc.KeyDataLen[1],pMsg->KeyDesc.KeyData);
1195                         }
1196                         else
1197                         {
1198                                 INT     i;
1199                                 UCHAR   Key[32];
1200                                 // Decrypt TKIP GTK
1201                                 // Construct 32 bytes RC4 Key
1202                                 NdisMoveMemory(Key, pMsg->KeyDesc.KeyIv, 16);
1203                                 NdisMoveMemory(&Key[16], &pEntry->PTK[16], 16);
1204                                 ARCFOUR_INIT(&pAd->PrivateInfo.WEPCONTEXT, Key, 32);
1205                                 //discard first 256 bytes
1206                                 for(i = 0; i < 256; i++)
1207                                         ARCFOUR_BYTE(&pAd->PrivateInfo.WEPCONTEXT);
1208                                 // Decrypt GTK. Becareful, there is no ICV to check the result is correct or not
1209                                 ARCFOUR_DECRYPT(&pAd->PrivateInfo.WEPCONTEXT, KEYDATA, pMsg->KeyDesc.KeyData, pMsg->KeyDesc.KeyDataLen[1]);
1210                         }
1211
1212                         if (!bWPA2 && (MsgType == EAPOL_GROUP_MSG_1))
1213                                 GroupKeyIndex = EapolKeyInfo.KeyIndex;
1214
1215                 }
1216                 else if ((MsgType == EAPOL_PAIR_MSG_2) || (MsgType == EAPOL_PAIR_MSG_3 && !bWPA2))
1217                 {
1218                         NdisMoveMemory(KEYDATA, pMsg->KeyDesc.KeyData, pMsg->KeyDesc.KeyDataLen[1]);
1219                 }
1220                 else
1221                 {
1222
1223                         return TRUE;
1224                 }
1225
1226                 // Parse Key Data field to
1227                 // 1. verify RSN IE for pairwise_msg_2_WPA1(WPA2) ,pairwise_msg_3_WPA1(WPA2)
1228                 // 2. verify KDE format for pairwise_msg_3_WPA2, group_msg_1_WPA2
1229                 // 3. update shared key for pairwise_msg_3_WPA2, group_msg_1_WPA1(WPA2)
1230                 if (!RTMPParseEapolKeyData(pAd, KEYDATA, pMsg->KeyDesc.KeyDataLen[1], GroupKeyIndex, MsgType, bWPA2, pEntry))
1231                 {
1232                         return FALSE;
1233                 }
1234         }
1235
1236         return TRUE;
1237
1238 }