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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                                 IF_DEV_CONFIG_OPMODE_ON_STA(pAd)
 426                                 {
 427                                         *pPreNHtCapabilityLen = 0;      // Nnow we only support 26 bytes.
 428
 429                                         Ptr = (PUCHAR) pVIE;
 430                                         NdisMoveMemory(Ptr + *LengthVIE, &pEid->Eid, pEid->Len + 2);
 431                                         *LengthVIE += (pEid->Len + 2);
 432                                 }
 433                         }
 434                         else
 435                         {
 436                                 DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - wrong IE_HT_CAP. pEid->Len = %d\n", pEid->Len));
 437                         }
 438
 439                 break;
 440             case IE_ADD_HT:
 441                         if (pEid->Len >= sizeof(ADD_HT_INFO_IE))
 442                         {
 443                                 // This IE allows extension, but we can ignore extra bytes beyond our knowledge , so only
 444                                 // copy first sizeof(ADD_HT_INFO_IE)
 445                                 NdisMoveMemory(AddHtInfo, pEid->Octet, sizeof(ADD_HT_INFO_IE));
 446                                 *AddHtInfoLen = SIZE_ADD_HT_INFO_IE;
 447
 448                                 CtrlChannel = AddHtInfo->ControlChan;
 449
 450                                 *(USHORT *)(&AddHtInfo->AddHtInfo2) = cpu2le16(*(USHORT *)(&AddHtInfo->AddHtInfo2));
 451                                 *(USHORT *)(&AddHtInfo->AddHtInfo3) = cpu2le16(*(USHORT *)(&AddHtInfo->AddHtInfo3));
 452
 453                                 IF_DEV_CONFIG_OPMODE_ON_STA(pAd)
 454                                 {
 455                                         Ptr = (PUCHAR) pVIE;
 456                                         NdisMoveMemory(Ptr + *LengthVIE, &pEid->Eid, pEid->Len + 2);
 457                                         *LengthVIE += (pEid->Len + 2);
 458                                 }
 459                         }
 460                         else
 461                         {
 462                                 DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - wrong IE_ADD_HT. \n"));
 463                         }
 464
 465                 break;
 466             case IE_SECONDARY_CH_OFFSET:
 467                         if (pEid->Len == 1)
 468                         {
 469                                 *NewExtChannelOffset = pEid->Octet[0];
 470                         }
 471                         else
 472                         {
 473                                 DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - wrong IE_SECONDARY_CH_OFFSET. \n"));
 474                         }
 475
 476                 break;
 477             case IE_FH_PARM:
 478                 DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity(IE_FH_PARM) \n"));
 479                 break;
 480
 481             case IE_DS_PARM:
 482                 if(pEid->Len == 1)
 483                 {
 484                     *pChannel = *pEid->Octet;
 485
 486                                         IF_DEV_CONFIG_OPMODE_ON_STA(pAd)
 487                                         {
 488                                                 if (ChannelSanity(pAd, *pChannel) == 0)
 489                                                 {
 490
 491                                                         return FALSE;
 492                                                 }
 493                                         }
 494
 495                     Sanity |= 0x4;
 496                 }
 497                 else
 498                 {
 499                     DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_DS_PARM (len=%d)\n",pEid->Len));
 500                     return FALSE;
 501                 }
 502                 break;
 503
 504             case IE_CF_PARM:
 505                 if(pEid->Len == 6)
 506                 {
 507                     pCfParm->bValid = TRUE;
 508                     pCfParm->CfpCount = pEid->Octet[0];
 509                     pCfParm->CfpPeriod = pEid->Octet[1];
 510                     pCfParm->CfpMaxDuration = pEid->Octet[2] + 256 * pEid->Octet[3];
 511                     pCfParm->CfpDurRemaining = pEid->Octet[4] + 256 * pEid->Octet[5];
 512                 }
 513                 else
 514                 {
 515                     DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_CF_PARM\n"));
 516                     return FALSE;
 517                 }
 518                 break;
 519
 520             case IE_IBSS_PARM:
 521                 if(pEid->Len == 2)
 522                 {
 523                     NdisMoveMemory(pAtimWin, pEid->Octet, pEid->Len);
 524                 }
 525                 else
 526                 {
 527                     DBGPRINT(RT_DEBUG_TRACE, ("PeerBeaconAndProbeRspSanity - wrong IE_IBSS_PARM\n"));
 528                     return FALSE;
 529                 }
 530                 break;
 531
 532             case IE_TIM:
 533                 if(INFRA_ON(pAd) && SubType == SUBTYPE_BEACON)
 534                 {
 535                     GetTimBit((PUCHAR)pEid, pAd->StaActive.Aid, &TimLen, pBcastFlag, pDtimCount, pDtimPeriod, pMessageToMe);
 536                 }
 537                 break;
 538
 539             case IE_CHANNEL_SWITCH_ANNOUNCEMENT:
 540                 if(pEid->Len == 3)
 541                 {
 542                         *pNewChannel = pEid->Octet[1];  //extract new channel number
 543                 }
 544                 break;
 545
 546             // New for WPA
 547             // CCX v2 has the same IE, we need to parse that too
 548             // Wifi WMM use the same IE vale, need to parse that too
 549             // case IE_WPA:
 550             case IE_VENDOR_SPECIFIC:
 551                 // Check the OUI version, filter out non-standard usage
 552                 if (NdisEqualMemory(pEid->Octet, RALINK_OUI, 3) && (pEid->Len == 7))
 553                 {
 554                     //*pRalinkIe = pEid->Octet[3];
 555                     if (pEid->Octet[3] != 0)
 556                                         *pRalinkIe = pEid->Octet[3];
 557                                 else
 558                                         *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.
 559                 }
 560                 // This HT IE is before IEEE draft set HT IE value.2006-09-28 by Jan.
 561
 562                 // Other vendors had production before IE_HT_CAP value is assigned. To backward support those old-firmware AP,
 563                 // Check broadcom-defiend pre-802.11nD1.0 OUI for HT related IE, including HT Capatilities IE and HT Information IE
 564                 else if ((*pHtCapabilityLen == 0) && NdisEqualMemory(pEid->Octet, PRE_N_HT_OUI, 3) && (pEid->Len >= 4) && (pAd->OpMode == OPMODE_STA))
 565                 {
 566                     if ((pEid->Octet[3] == OUI_PREN_HT_CAP) && (pEid->Len >= 30) && (*pHtCapabilityLen == 0))
 567                     {
 568                         NdisMoveMemory(pHtCapability, &pEid->Octet[4], sizeof(HT_CAPABILITY_IE));
 569                         *pPreNHtCapabilityLen = SIZE_HT_CAP_IE;
 570                     }
 571
 572                     if ((pEid->Octet[3] == OUI_PREN_ADD_HT) && (pEid->Len >= 26))
 573                     {
 574                         NdisMoveMemory(AddHtInfo, &pEid->Octet[4], sizeof(ADD_HT_INFO_IE));
 575                         *AddHtInfoLen = SIZE_ADD_HT_INFO_IE;
 576                     }
 577                 }
 578                 else if (NdisEqualMemory(pEid->Octet, WPA_OUI, 4))
 579                 {
 580                     // Copy to pVIE which will report to microsoft bssid list.
 581                     Ptr = (PUCHAR) pVIE;
 582                     NdisMoveMemory(Ptr + *LengthVIE, &pEid->Eid, pEid->Len + 2);
 583                     *LengthVIE += (pEid->Len + 2);
 584                 }
 585                 else if (NdisEqualMemory(pEid->Octet, WME_PARM_ELEM, 6) && (pEid->Len == 24))
 586                 {
 587                     PUCHAR ptr;
 588                     int i;
 589
 590                     // parsing EDCA parameters
 591                     pEdcaParm->bValid          = TRUE;
 592                     pEdcaParm->bQAck           = FALSE; // pEid->Octet[0] & 0x10;
 593                     pEdcaParm->bQueueRequest   = FALSE; // pEid->Octet[0] & 0x20;
 594                     pEdcaParm->bTxopRequest    = FALSE; // pEid->Octet[0] & 0x40;
 595                     pEdcaParm->EdcaUpdateCount = pEid->Octet[6] & 0x0f;
 596                     pEdcaParm->bAPSDCapable    = (pEid->Octet[6] & 0x80) ? 1 : 0;
 597                     ptr = &pEid->Octet[8];
 598                     for (i=0; i<4; i++)
 599                     {
 600                         UCHAR aci = (*ptr & 0x60) >> 5; // b5~6 is AC INDEX
 601                         pEdcaParm->bACM[aci]  = (((*ptr) & 0x10) == 0x10);   // b5 is ACM
 602                         pEdcaParm->Aifsn[aci] = (*ptr) & 0x0f;               // b0~3 is AIFSN
 603                         pEdcaParm->Cwmin[aci] = *(ptr+1) & 0x0f;             // b0~4 is Cwmin
 604                         pEdcaParm->Cwmax[aci] = *(ptr+1) >> 4;               // b5~8 is Cwmax
 605                         pEdcaParm->Txop[aci]  = *(ptr+2) + 256 * (*(ptr+3)); // in unit of 32-us
 606                         ptr += 4; // point to next AC
 607                     }
 608                 }
 609                 else if (NdisEqualMemory(pEid->Octet, WME_INFO_ELEM, 6) && (pEid->Len == 7))
 610                 {
 611                     // parsing EDCA parameters
 612                     pEdcaParm->bValid          = TRUE;
 613                     pEdcaParm->bQAck           = FALSE; // pEid->Octet[0] & 0x10;
 614                     pEdcaParm->bQueueRequest   = FALSE; // pEid->Octet[0] & 0x20;
 615                     pEdcaParm->bTxopRequest    = FALSE; // pEid->Octet[0] & 0x40;
 616                     pEdcaParm->EdcaUpdateCount = pEid->Octet[6] & 0x0f;
 617                     pEdcaParm->bAPSDCapable    = (pEid->Octet[6] & 0x80) ? 1 : 0;
 618
 619                     // use default EDCA parameter
 620                     pEdcaParm->bACM[QID_AC_BE]  = 0;
 621                     pEdcaParm->Aifsn[QID_AC_BE] = 3;
 622                     pEdcaParm->Cwmin[QID_AC_BE] = CW_MIN_IN_BITS;
 623                     pEdcaParm->Cwmax[QID_AC_BE] = CW_MAX_IN_BITS;
 624                     pEdcaParm->Txop[QID_AC_BE]  = 0;
 625
 626                     pEdcaParm->bACM[QID_AC_BK]  = 0;
 627                     pEdcaParm->Aifsn[QID_AC_BK] = 7;
 628                     pEdcaParm->Cwmin[QID_AC_BK] = CW_MIN_IN_BITS;
 629                     pEdcaParm->Cwmax[QID_AC_BK] = CW_MAX_IN_BITS;
 630                     pEdcaParm->Txop[QID_AC_BK]  = 0;
 631
 632                     pEdcaParm->bACM[QID_AC_VI]  = 0;
 633                     pEdcaParm->Aifsn[QID_AC_VI] = 2;
 634                     pEdcaParm->Cwmin[QID_AC_VI] = CW_MIN_IN_BITS-1;
 635                     pEdcaParm->Cwmax[QID_AC_VI] = CW_MAX_IN_BITS;
 636                     pEdcaParm->Txop[QID_AC_VI]  = 96;   // AC_VI: 96*32us ~= 3ms
 637
 638                     pEdcaParm->bACM[QID_AC_VO]  = 0;
 639                     pEdcaParm->Aifsn[QID_AC_VO] = 2;
 640                     pEdcaParm->Cwmin[QID_AC_VO] = CW_MIN_IN_BITS-2;
 641                     pEdcaParm->Cwmax[QID_AC_VO] = CW_MAX_IN_BITS-1;
 642                     pEdcaParm->Txop[QID_AC_VO]  = 48;   // AC_VO: 48*32us ~= 1.5ms
 643                 }
 644                 break;
 645
 646             case IE_EXT_SUPP_RATES:
 647                 if (pEid->Len <= MAX_LEN_OF_SUPPORTED_RATES)
 648                 {
 649                     NdisMoveMemory(ExtRate, pEid->Octet, pEid->Len);
 650                     *pExtRateLen = pEid->Len;
 651
 652                     // TODO: 2004-09-14 not a good design here, cause it exclude extra rates
 653                     // from ScanTab. We should report as is. And filter out unsupported
 654                     // rates in MlmeAux.
 655                     // Check against the supported rates
 656                     // RTMPCheckRates(pAd, ExtRate, pExtRateLen);
 657                 }
 658                 break;
 659
 660             case IE_ERP:
 661                 if (pEid->Len == 1)
 662                 {
 663                     *pErp = (UCHAR)pEid->Octet[0];
 664                 }
 665                 break;
 666
 667             case IE_AIRONET_CKIP:
 668                 // 0. Check Aironet IE length, it must be larger or equal to 28
 669                 // Cisco AP350 used length as 28
 670                 // Cisco AP12XX used length as 30
 671                 if (pEid->Len < (CKIP_NEGOTIATION_LENGTH - 2))
 672                     break;
 673
 674                 // 1. Copy CKIP flag byte to buffer for process
 675                 *pCkipFlag = *(pEid->Octet + 8);
 676                 break;
 677
 678             case IE_AP_TX_POWER:
 679                 // AP Control of Client Transmit Power
 680                 //0. Check Aironet IE length, it must be 6
 681                 if (pEid->Len != 0x06)
 682                     break;
 683
 684                 // Get cell power limit in dBm
 685                 if (NdisEqualMemory(pEid->Octet, CISCO_OUI, 3) == 1)
 686                     *pAironetCellPowerLimit = *(pEid->Octet + 4);
 687                 break;
 688
 689             // WPA2 & 802.11i RSN
 690             case IE_RSN:
 691                 // There is no OUI for version anymore, check the group cipher OUI before copying
 692                 if (RTMPEqualMemory(pEid->Octet + 2, RSN_OUI, 3))
 693                 {
 694                     // Copy to pVIE which will report to microsoft bssid list.
 695                     Ptr = (PUCHAR) pVIE;
 696                     NdisMoveMemory(Ptr + *LengthVIE, &pEid->Eid, pEid->Len + 2);
 697                     *LengthVIE += (pEid->Len + 2);
 698                 }
 699                 break;
 700
 701             default:
 702                 break;
 703         }
 704
 705         Length = Length + 2 + pEid->Len;  // Eid[1] + Len[1]+ content[Len]
 706         pEid = (PEID_STRUCT)((UCHAR*)pEid + 2 + pEid->Len);
 707     }
 708
 709     // For some 11a AP. it did not have the channel EID, patch here
 710         IF_DEV_CONFIG_OPMODE_ON_STA(pAd)
 711         {
 712                 UCHAR LatchRfChannel = MsgChannel;
 713                 if ((pAd->LatchRfRegs.Channel > 14) && ((Sanity & 0x4) == 0))
 714                 {
 715                         if (CtrlChannel != 0)
 716                                 *pChannel = CtrlChannel;
 717                         else
 718                                 *pChannel = LatchRfChannel;
 719                         Sanity |= 0x4;
 720                 }
 721         }
 722
 723         if (Sanity != 0x7)
 724         {
 725                 DBGPRINT(RT_DEBUG_WARN, ("PeerBeaconAndProbeRspSanity - missing field, Sanity=0x%02x\n", Sanity));
 726                 return FALSE;
 727         }
 728         else
 729         {
 730                 return TRUE;
 731         }
 732
 733 }
 734
 735 /*
 736     ==========================================================================
 737     Description:
 738         MLME message sanity check
 739     Return:
 740         TRUE if all parameters are OK, FALSE otherwise
 741     ==========================================================================
 742  */
 743 BOOLEAN MlmeScanReqSanity(
 744         IN PRTMP_ADAPTER pAd,
 745         IN VOID *Msg,
 746         IN ULONG MsgLen,
 747         OUT UCHAR *pBssType,
 748         OUT CHAR Ssid[],
 749         OUT UCHAR *pSsidLen,
 750         OUT UCHAR *pScanType)
 751 {
 752         MLME_SCAN_REQ_STRUCT *Info;
 753
 754         Info = (MLME_SCAN_REQ_STRUCT *)(Msg);
 755         *pBssType = Info->BssType;
 756         *pSsidLen = Info->SsidLen;
 757         NdisMoveMemory(Ssid, Info->Ssid, *pSsidLen);
 758         *pScanType = Info->ScanType;
 759
 760         if ((*pBssType == BSS_INFRA || *pBssType == BSS_ADHOC || *pBssType == BSS_ANY)
 761                 && (*pScanType == SCAN_ACTIVE || *pScanType == SCAN_PASSIVE
 762                 || *pScanType == SCAN_CISCO_PASSIVE || *pScanType == SCAN_CISCO_ACTIVE
 763                 || *pScanType == SCAN_CISCO_CHANNEL_LOAD || *pScanType == SCAN_CISCO_NOISE
 764                 ))
 765         {
 766                 return TRUE;
 767         }
 768         else
 769         {
 770                 DBGPRINT(RT_DEBUG_TRACE, ("MlmeScanReqSanity fail - wrong BssType or ScanType\n"));
 771                 return FALSE;
 772         }
 773 }
 774
 775 // IRQL = DISPATCH_LEVEL
 776 UCHAR ChannelSanity(
 777     IN PRTMP_ADAPTER pAd,
 778     IN UCHAR channel)
 779 {
 780     int i;
 781
 782     for (i = 0; i < pAd->ChannelListNum; i ++)
 783     {
 784         if (channel == pAd->ChannelList[i].Channel)
 785             return 1;
 786     }
 787     return 0;
 788 }
 789
 790 /*
 791     ==========================================================================
 792     Description:
 793         MLME message sanity check
 794     Return:
 795         TRUE if all parameters are OK, FALSE otherwise
 796
 797         IRQL = DISPATCH_LEVEL
 798
 799     ==========================================================================
 800  */
 801 BOOLEAN PeerDeauthSanity(
 802     IN PRTMP_ADAPTER pAd,
 803     IN VOID *Msg,
 804     IN ULONG MsgLen,
 805     OUT PUCHAR pAddr2,
 806     OUT USHORT *pReason)
 807 {
 808     PFRAME_802_11 pFrame = (PFRAME_802_11)Msg;
 809
 810     COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2);
 811     NdisMoveMemory(pReason, &pFrame->Octet[0], 2);
 812
 813     return TRUE;
 814 }
 815
 816 /*
 817     ==========================================================================
 818     Description:
 819         MLME message sanity check
 820     Return:
 821         TRUE if all parameters are OK, FALSE otherwise
 822
 823         IRQL = DISPATCH_LEVEL
 824
 825     ==========================================================================
 826  */
 827 BOOLEAN PeerAuthSanity(
 828     IN PRTMP_ADAPTER pAd,
 829     IN VOID *Msg,
 830     IN ULONG MsgLen,
 831     OUT PUCHAR pAddr,
 832     OUT USHORT *pAlg,
 833     OUT USHORT *pSeq,
 834     OUT USHORT *pStatus,
 835     CHAR *pChlgText)
 836 {
 837     PFRAME_802_11 pFrame = (PFRAME_802_11)Msg;
 838
 839     COPY_MAC_ADDR(pAddr,   pFrame->Hdr.Addr2);
 840     NdisMoveMemory(pAlg,    &pFrame->Octet[0], 2);
 841     NdisMoveMemory(pSeq,    &pFrame->Octet[2], 2);
 842     NdisMoveMemory(pStatus, &pFrame->Octet[4], 2);
 843
 844     if ((*pAlg == Ndis802_11AuthModeOpen)
 845       )
 846     {
 847         if (*pSeq == 1 || *pSeq == 2)
 848         {
 849             return TRUE;
 850         }
 851         else
 852         {
 853             DBGPRINT(RT_DEBUG_TRACE, ("PeerAuthSanity fail - wrong Seg#\n"));
 854             return FALSE;
 855         }
 856     }
 857     else if (*pAlg == Ndis802_11AuthModeShared)
 858     {
 859         if (*pSeq == 1 || *pSeq == 4)
 860         {
 861             return TRUE;
 862         }
 863         else if (*pSeq == 2 || *pSeq == 3)
 864         {
 865             NdisMoveMemory(pChlgText, &pFrame->Octet[8], CIPHER_TEXT_LEN);
 866             return TRUE;
 867         }
 868         else
 869         {
 870             DBGPRINT(RT_DEBUG_TRACE, ("PeerAuthSanity fail - wrong Seg#\n"));
 871             return FALSE;
 872         }
 873     }
 874     else
 875     {
 876         DBGPRINT(RT_DEBUG_TRACE, ("PeerAuthSanity fail - wrong algorithm\n"));
 877         return FALSE;
 878     }
 879 }
 880
 881 /*
 882     ==========================================================================
 883     Description:
 884         MLME message sanity check
 885     Return:
 886         TRUE if all parameters are OK, FALSE otherwise
 887     ==========================================================================
 888  */
 889 BOOLEAN MlmeAuthReqSanity(
 890     IN PRTMP_ADAPTER pAd,
 891     IN VOID *Msg,
 892     IN ULONG MsgLen,
 893     OUT PUCHAR pAddr,
 894     OUT ULONG *pTimeout,
 895     OUT USHORT *pAlg)
 896 {
 897     MLME_AUTH_REQ_STRUCT *pInfo;
 898
 899     pInfo  = (MLME_AUTH_REQ_STRUCT *)Msg;
 900     COPY_MAC_ADDR(pAddr, pInfo->Addr);
 901     *pTimeout = pInfo->Timeout;
 902     *pAlg = pInfo->Alg;
 903
 904     if (((*pAlg == Ndis802_11AuthModeShared) ||(*pAlg == Ndis802_11AuthModeOpen)
 905         ) &&
 906         ((*pAddr & 0x01) == 0))
 907     {
 908         return TRUE;
 909     }
 910     else
 911     {
 912         DBGPRINT(RT_DEBUG_TRACE, ("MlmeAuthReqSanity fail - wrong algorithm\n"));
 913         return FALSE;
 914     }
 915 }
 916
 917 /*
 918     ==========================================================================
 919     Description:
 920         MLME message sanity check
 921     Return:
 922         TRUE if all parameters are OK, FALSE otherwise
 923
 924         IRQL = DISPATCH_LEVEL
 925
 926     ==========================================================================
 927  */
 928 BOOLEAN MlmeAssocReqSanity(
 929     IN PRTMP_ADAPTER pAd,
 930     IN VOID *Msg,
 931     IN ULONG MsgLen,
 932     OUT PUCHAR pApAddr,
 933     OUT USHORT *pCapabilityInfo,
 934     OUT ULONG *pTimeout,
 935     OUT USHORT *pListenIntv)
 936 {
 937     MLME_ASSOC_REQ_STRUCT *pInfo;
 938
 939     pInfo = (MLME_ASSOC_REQ_STRUCT *)Msg;
 940     *pTimeout = pInfo->Timeout;                             // timeout
 941     COPY_MAC_ADDR(pApAddr, pInfo->Addr);                   // AP address
 942     *pCapabilityInfo = pInfo->CapabilityInfo;               // capability info
 943     *pListenIntv = pInfo->ListenIntv;
 944
 945     return TRUE;
 946 }
 947
 948 /*
 949     ==========================================================================
 950     Description:
 951         MLME message sanity check
 952     Return:
 953         TRUE if all parameters are OK, FALSE otherwise
 954
 955         IRQL = DISPATCH_LEVEL
 956
 957     ==========================================================================
 958  */
 959 BOOLEAN PeerDisassocSanity(
 960     IN PRTMP_ADAPTER pAd,
 961     IN VOID *Msg,
 962     IN ULONG MsgLen,
 963     OUT PUCHAR pAddr2,
 964     OUT USHORT *pReason)
 965 {
 966     PFRAME_802_11 pFrame = (PFRAME_802_11)Msg;
 967
 968     COPY_MAC_ADDR(pAddr2, pFrame->Hdr.Addr2);
 969     NdisMoveMemory(pReason, &pFrame->Octet[0], 2);
 970
 971     return TRUE;
 972 }
 973
 974 /*
 975         ========================================================================
 976         Routine Description:
 977                 Sanity check NetworkType (11b, 11g or 11a)
 978
 979         Arguments:
 980                 pBss - Pointer to BSS table.
 981
 982         Return Value:
 983         Ndis802_11DS .......(11b)
 984         Ndis802_11OFDM24....(11g)
 985         Ndis802_11OFDM5.....(11a)
 986
 987         IRQL = DISPATCH_LEVEL
 988
 989         ========================================================================
 990 */
 991 NDIS_802_11_NETWORK_TYPE NetworkTypeInUseSanity(
 992     IN PBSS_ENTRY pBss)
 993 {
 994         NDIS_802_11_NETWORK_TYPE        NetWorkType;
 995         UCHAR                                           rate, i;
 996
 997         NetWorkType = Ndis802_11DS;
 998
 999         if (pBss->Channel <= 14)
1000         {
1001                 //
1002                 // First check support Rate.
1003                 //
1004                 for (i = 0; i < pBss->SupRateLen; i++)
1005                 {
1006                         rate = pBss->SupRate[i] & 0x7f; // Mask out basic rate set bit
1007                         if ((rate == 2) || (rate == 4) || (rate == 11) || (rate == 22))
1008                         {
1009                                 continue;
1010                         }
1011                         else
1012                         {
1013                                 //
1014                                 // Otherwise (even rate > 108) means Ndis802_11OFDM24
1015                                 //
1016                                 NetWorkType = Ndis802_11OFDM24;
1017                                 break;
1018                         }
1019                 }
1020
1021                 //
1022                 // Second check Extend Rate.
1023                 //
1024                 if (NetWorkType != Ndis802_11OFDM24)
1025                 {
1026                         for (i = 0; i < pBss->ExtRateLen; i++)
1027                         {
1028                                 rate = pBss->SupRate[i] & 0x7f; // Mask out basic rate set bit
1029                                 if ((rate == 2) || (rate == 4) || (rate == 11) || (rate == 22))
1030                                 {
1031                                         continue;
1032                                 }
1033                                 else
1034                                 {
1035                                         //
1036                                         // Otherwise (even rate > 108) means Ndis802_11OFDM24
1037                                         //
1038                                         NetWorkType = Ndis802_11OFDM24;
1039                                         break;
1040                                 }
1041                         }
1042                 }
1043         }
1044         else
1045         {
1046                 NetWorkType = Ndis802_11OFDM5;
1047         }
1048
1049     if (pBss->HtCapabilityLen != 0)
1050     {
1051         if (NetWorkType == Ndis802_11OFDM5)
1052             NetWorkType = Ndis802_11OFDM5_N;
1053         else
1054             NetWorkType = Ndis802_11OFDM24_N;
1055     }
1056
1057         return NetWorkType;
1058 }
1059
1060 /*
1061     ==========================================================================
1062     Description:
1063         WPA message sanity check
1064     Return:
1065         TRUE if all parameters are OK, FALSE otherwise
1066     ==========================================================================
1067  */
1068 BOOLEAN PeerWpaMessageSanity(
1069     IN  PRTMP_ADAPTER           pAd,
1070     IN  PEAPOL_PACKET           pMsg,
1071     IN  ULONG                           MsgLen,
1072     IN  UCHAR                           MsgType,
1073     IN  MAC_TABLE_ENTRY         *pEntry)
1074 {
1075         UCHAR                   mic[LEN_KEY_DESC_MIC], digest[80], KEYDATA[MAX_LEN_OF_RSNIE];
1076         BOOLEAN                 bReplayDiff = FALSE;
1077         BOOLEAN                 bWPA2 = FALSE;
1078         KEY_INFO                EapolKeyInfo;
1079         UCHAR                   GroupKeyIndex = 0;
1080
1081
1082         NdisZeroMemory(mic, sizeof(mic));
1083         NdisZeroMemory(digest, sizeof(digest));
1084         NdisZeroMemory(KEYDATA, sizeof(KEYDATA));
1085         NdisZeroMemory((PUCHAR)&EapolKeyInfo, sizeof(EapolKeyInfo));
1086
1087         NdisMoveMemory((PUCHAR)&EapolKeyInfo, (PUCHAR)&pMsg->KeyDesc.KeyInfo, sizeof(KEY_INFO));
1088
1089         *((USHORT *)&EapolKeyInfo) = cpu2le16(*((USHORT *)&EapolKeyInfo));
1090
1091         // Choose WPA2 or not
1092         if ((pEntry->AuthMode == Ndis802_11AuthModeWPA2) || (pEntry->AuthMode == Ndis802_11AuthModeWPA2PSK))
1093                 bWPA2 = TRUE;
1094
1095         // 0. Check MsgType
1096         if ((MsgType > EAPOL_GROUP_MSG_2) || (MsgType < EAPOL_PAIR_MSG_1))
1097         {
1098                 DBGPRINT(RT_DEBUG_ERROR, ("The message type is invalid(%d)! \n", MsgType));
1099                 return FALSE;
1100         }
1101
1102         // 1. Replay counter check
1103         if (MsgType == EAPOL_PAIR_MSG_1 || MsgType == EAPOL_PAIR_MSG_3 || MsgType == EAPOL_GROUP_MSG_1) // For supplicant
1104     {
1105         // First validate replay counter, only accept message with larger replay counter.
1106                 // Let equal pass, some AP start with all zero replay counter
1107                 UCHAR   ZeroReplay[LEN_KEY_DESC_REPLAY];
1108
1109         NdisZeroMemory(ZeroReplay, LEN_KEY_DESC_REPLAY);
1110                 if ((RTMPCompareMemory(pMsg->KeyDesc.ReplayCounter, pEntry->R_Counter, LEN_KEY_DESC_REPLAY) != 1) &&
1111                         (RTMPCompareMemory(pMsg->KeyDesc.ReplayCounter, ZeroReplay, LEN_KEY_DESC_REPLAY) != 0))
1112         {
1113                         bReplayDiff = TRUE;
1114         }
1115         }
1116         else if (MsgType == EAPOL_PAIR_MSG_2 || MsgType == EAPOL_PAIR_MSG_4 || MsgType == EAPOL_GROUP_MSG_2)    // For authenticator
1117         {
1118                 // check Replay Counter coresponds to MSG from authenticator, otherwise discard
1119         if (!NdisEqualMemory(pMsg->KeyDesc.ReplayCounter, pEntry->R_Counter, LEN_KEY_DESC_REPLAY))
1120         {
1121                         bReplayDiff = TRUE;
1122         }
1123         }
1124
1125         // Replay Counter different condition
1126         if (bReplayDiff)
1127         {
1128                 // send wireless event - for replay counter different
1129                 if (pAd->CommonCfg.bWirelessEvent)
1130                         RTMPSendWirelessEvent(pAd, IW_REPLAY_COUNTER_DIFF_EVENT_FLAG, pEntry->Addr, pEntry->apidx, 0);
1131
1132                 if (MsgType < EAPOL_GROUP_MSG_1)
1133                 {
1134                 DBGPRINT(RT_DEBUG_ERROR, ("Replay Counter Different in pairwise msg %d of 4-way handshake!\n", MsgType));
1135                 }
1136                 else
1137                 {
1138                         DBGPRINT(RT_DEBUG_ERROR, ("Replay Counter Different in group msg %d of 2-way handshake!\n", (MsgType - EAPOL_PAIR_MSG_4)));
1139                 }
1140
1141                 hex_dump("Receive replay counter ", pMsg->KeyDesc.ReplayCounter, LEN_KEY_DESC_REPLAY);
1142                 hex_dump("Current replay counter ", pEntry->R_Counter, LEN_KEY_DESC_REPLAY);
1143         return FALSE;
1144         }
1145
1146         // 2. Verify MIC except Pairwise Msg1
1147         if (MsgType != EAPOL_PAIR_MSG_1)
1148         {
1149                 UCHAR                   rcvd_mic[LEN_KEY_DESC_MIC];
1150
1151                 // Record the received MIC for check later
1152                 NdisMoveMemory(rcvd_mic, pMsg->KeyDesc.KeyMic, LEN_KEY_DESC_MIC);
1153                 NdisZeroMemory(pMsg->KeyDesc.KeyMic, LEN_KEY_DESC_MIC);
1154
1155         if (pEntry->WepStatus == Ndis802_11Encryption2Enabled)  // TKIP
1156         {
1157             hmac_md5(pEntry->PTK, LEN_EAP_MICK, (PUCHAR)pMsg, MsgLen, mic);
1158         }
1159         else if (pEntry->WepStatus == Ndis802_11Encryption3Enabled)     // AES
1160         {
1161             HMAC_SHA1((PUCHAR)pMsg, MsgLen, pEntry->PTK, LEN_EAP_MICK, digest);
1162             NdisMoveMemory(mic, digest, LEN_KEY_DESC_MIC);
1163         }
1164
1165         if (!NdisEqualMemory(rcvd_mic, mic, LEN_KEY_DESC_MIC))
1166         {
1167                         // send wireless event - for MIC different
1168                         if (pAd->CommonCfg.bWirelessEvent)
1169                                 RTMPSendWirelessEvent(pAd, IW_MIC_DIFF_EVENT_FLAG, pEntry->Addr, pEntry->apidx, 0);
1170
1171                         if (MsgType < EAPOL_GROUP_MSG_1)
1172                         {
1173                 DBGPRINT(RT_DEBUG_ERROR, ("MIC Different in pairwise msg %d of 4-way handshake!\n", MsgType));
1174                         }
1175                         else
1176                         {
1177                                 DBGPRINT(RT_DEBUG_ERROR, ("MIC Different in group msg %d of 2-way handshake!\n", (MsgType - EAPOL_PAIR_MSG_4)));
1178                         }
1179
1180                         hex_dump("Received MIC", rcvd_mic, LEN_KEY_DESC_MIC);
1181                         hex_dump("Desired  MIC", mic, LEN_KEY_DESC_MIC);
1182
1183                         return FALSE;
1184         }
1185         }
1186
1187         // Extract the context of the Key Data field if it exist
1188         // The field in pairwise_msg_2_WPA1(WPA2) & pairwise_msg_3_WPA1 is un-encrypted.
1189         // The field in group_msg_1_WPA1(WPA2) & pairwise_msg_3_WPA2 is encrypted.
1190         if (pMsg->KeyDesc.KeyDataLen[1] > 0)
1191         {
1192                 // Decrypt this field
1193                 if ((MsgType == EAPOL_PAIR_MSG_3 && bWPA2) || (MsgType == EAPOL_GROUP_MSG_1))
1194                 {
1195                         if(pEntry->WepStatus == Ndis802_11Encryption3Enabled)
1196                         {
1197                                 // AES
1198                                 AES_GTK_KEY_UNWRAP(&pEntry->PTK[16], KEYDATA, pMsg->KeyDesc.KeyDataLen[1],pMsg->KeyDesc.KeyData);
1199                         }
1200                         else
1201                         {
1202                                 INT     i;
1203                                 UCHAR   Key[32];
1204                                 // Decrypt TKIP GTK
1205                                 // Construct 32 bytes RC4 Key
1206                                 NdisMoveMemory(Key, pMsg->KeyDesc.KeyIv, 16);
1207                                 NdisMoveMemory(&Key[16], &pEntry->PTK[16], 16);
1208                                 ARCFOUR_INIT(&pAd->PrivateInfo.WEPCONTEXT, Key, 32);
1209                                 //discard first 256 bytes
1210                                 for(i = 0; i < 256; i++)
1211                                         ARCFOUR_BYTE(&pAd->PrivateInfo.WEPCONTEXT);
1212                                 // Decrypt GTK. Becareful, there is no ICV to check the result is correct or not
1213                                 ARCFOUR_DECRYPT(&pAd->PrivateInfo.WEPCONTEXT, KEYDATA, pMsg->KeyDesc.KeyData, pMsg->KeyDesc.KeyDataLen[1]);
1214                         }
1215
1216                         if (!bWPA2 && (MsgType == EAPOL_GROUP_MSG_1))
1217                                 GroupKeyIndex = EapolKeyInfo.KeyIndex;
1218
1219                 }
1220                 else if ((MsgType == EAPOL_PAIR_MSG_2) || (MsgType == EAPOL_PAIR_MSG_3 && !bWPA2))
1221                 {
1222                         NdisMoveMemory(KEYDATA, pMsg->KeyDesc.KeyData, pMsg->KeyDesc.KeyDataLen[1]);
1223                 }
1224                 else
1225                 {
1226
1227                         return TRUE;
1228                 }
1229
1230                 // Parse Key Data field to
1231                 // 1. verify RSN IE for pairwise_msg_2_WPA1(WPA2) ,pairwise_msg_3_WPA1(WPA2)
1232                 // 2. verify KDE format for pairwise_msg_3_WPA2, group_msg_1_WPA2
1233                 // 3. update shared key for pairwise_msg_3_WPA2, group_msg_1_WPA1(WPA2)
1234                 if (!RTMPParseEapolKeyData(pAd, KEYDATA, pMsg->KeyDesc.KeyDataLen[1], GroupKeyIndex, MsgType, bWPA2, pEntry))
1235                 {
1236                         return FALSE;
1237                 }
1238         }
1239
1240         return TRUE;
1241
1242 }