auth.c

ralink最新rt3070 usb wifi 无线网卡驱动程序

                    NStatus = MlmeAllocateMemory(pAd, &pOutBuffer);  
                    if(NStatus != NDIS_STATUS_SUCCESS) 
                    {
                        DBGPRINT(RT_DEBUG_TRACE, ("AUTH - PeerAuthRspAtSeq2Action() allocate memory fail\n"));
                        pAd->Mlme.AuthMachine.CurrState = AUTH_REQ_IDLE;
                        Status2 = MLME_FAIL_NO_RESOURCE;
                        MlmeEnqueue(pAd, MLME_CNTL_STATE_MACHINE, MT2_AUTH_CONF, 2, &Status2);
                        return;
                    }
                    
                    DBGPRINT(RT_DEBUG_TRACE, ("AUTH - Send AUTH request seq#3...\n"));
                    MgtMacHeaderInit(pAd, &AuthHdr, SUBTYPE_AUTH, 0, Addr2, pAd->MlmeAux.Bssid);
                    AuthHdr.FC.Wep = 1;
                    // Encrypt challenge text & auth information
                    RTMPInitWepEngine(
                    	pAd,
                    	pAd->SharedKey[BSS0][pAd->StaCfg.DefaultKeyId].Key,
                    	pAd->StaCfg.DefaultKeyId,
                    	pAd->SharedKey[BSS0][pAd->StaCfg.DefaultKeyId].KeyLen,
                    	CyperChlgText);

					Alg = cpu2le16(*(USHORT *)&Alg);
					Seq = cpu2le16(*(USHORT *)&Seq);
					RemoteStatus= cpu2le16(*(USHORT *)&RemoteStatus);                    				

					RTMPEncryptData(pAd, (PUCHAR) &Alg, CyperChlgText + 4, 2);
					RTMPEncryptData(pAd, (PUCHAR) &Seq, CyperChlgText + 6, 2);
					RTMPEncryptData(pAd, (PUCHAR) &RemoteStatus, CyperChlgText + 8, 2);
					Element[0] = 16;
					Element[1] = 128;
					RTMPEncryptData(pAd, Element, CyperChlgText + 10, 2);
					RTMPEncryptData(pAd, ChlgText, CyperChlgText + 12, 128);
					RTMPSetICV(pAd, CyperChlgText + 140);
                    MakeOutgoingFrame(pOutBuffer,               &FrameLen, 
                                      sizeof(HEADER_802_11),    &AuthHdr,  
                                      CIPHER_TEXT_LEN + 16,     CyperChlgText, 
                                      END_OF_ARGS);
                    MiniportMMRequest(pAd, 0, pOutBuffer, FrameLen);
                	MlmeFreeMemory(pAd, pOutBuffer);

                    RTMPSetTimer(&pAd->MlmeAux.AuthTimer, AUTH_TIMEOUT);
                    pAd->Mlme.AuthMachine.CurrState = AUTH_WAIT_SEQ4;
                }
            } 
            else 
            {
#ifdef LEAP_SUPPORT
                if (pAd->StaCfg.LeapAuthMode == CISCO_AuthModeLEAP)
                { 
                    //Invalid Authentication possible rogue AP
                    //Add this Ap to Rogue AP.
                    RogueApTableSetEntry(pAd, &pAd->StaCfg.RogueApTab, Addr2, LEAP_REASON_INVALID_AUTH);
				}
#endif // LEAP_SUPPORT //
                pAd->StaCfg.AuthFailReason = Status;
                COPY_MAC_ADDR(pAd->StaCfg.AuthFailSta, Addr2);
                pAd->Mlme.AuthMachine.CurrState = AUTH_REQ_IDLE;
                MlmeEnqueue(pAd, MLME_CNTL_STATE_MACHINE, MT2_AUTH_CONF, 2, &Status);
            }
        }
    }
    else
    {
        DBGPRINT(RT_DEBUG_TRACE, ("AUTH - PeerAuthSanity() sanity check fail\n"));
    }
}

/*
    ==========================================================================
    Description:
        
	IRQL = DISPATCH_LEVEL

    ==========================================================================
 */
VOID PeerAuthRspAtSeq4Action(
    IN PRTMP_ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    UCHAR         Addr2[MAC_ADDR_LEN];
    USHORT        Alg, Seq, Status;
    CHAR          ChlgText[CIPHER_TEXT_LEN];
    BOOLEAN       TimerCancelled;

    if(PeerAuthSanity(pAd, Elem->Msg, Elem->MsgLen, Addr2, &Alg, &Seq, &Status, ChlgText)) 
    {
        if(MAC_ADDR_EQUAL(pAd->MlmeAux.Bssid, Addr2) && Seq == 4) 
        {
            DBGPRINT(RT_DEBUG_TRACE, ("AUTH - Receive AUTH_RSP seq#4 to me\n"));
            RTMPCancelTimer(&pAd->MlmeAux.AuthTimer, &TimerCancelled);
            
            if (Status != MLME_SUCCESS) 
            {
                pAd->StaCfg.AuthFailReason = Status;
                COPY_MAC_ADDR(pAd->StaCfg.AuthFailSta, Addr2);
            }                

            pAd->Mlme.AuthMachine.CurrState = AUTH_REQ_IDLE;
            MlmeEnqueue(pAd, MLME_CNTL_STATE_MACHINE, MT2_AUTH_CONF, 2, &Status);
        }
    }
    else
    {
        DBGPRINT(RT_DEBUG_TRACE, ("AUTH - PeerAuthRspAtSeq4Action() sanity check fail\n"));
    }
}

/*
    ==========================================================================
    Description:
        
	IRQL = DISPATCH_LEVEL

    ==========================================================================
 */
VOID MlmeDeauthReqAction(
    IN PRTMP_ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    MLME_DEAUTH_REQ_STRUCT *pInfo;
    HEADER_802_11 DeauthHdr;
    PUCHAR        pOutBuffer = NULL;
    NDIS_STATUS   NStatus;
    ULONG         FrameLen = 0;
    USHORT        Status;

    pInfo = (MLME_DEAUTH_REQ_STRUCT *)Elem->Msg;

    NStatus = MlmeAllocateMemory(pAd, &pOutBuffer);  //Get an unused nonpaged memory
    if (NStatus != NDIS_STATUS_SUCCESS) 
    {
        DBGPRINT(RT_DEBUG_TRACE, ("AUTH - MlmeDeauthReqAction() allocate memory fail\n"));
        pAd->Mlme.AuthMachine.CurrState = AUTH_REQ_IDLE;
        Status = MLME_FAIL_NO_RESOURCE;
        MlmeEnqueue(pAd, MLME_CNTL_STATE_MACHINE, MT2_DEAUTH_CONF, 2, &Status);
        return;
    }


    DBGPRINT(RT_DEBUG_TRACE, ("AUTH - Send DE-AUTH request (Reason=%d)...\n", pInfo->Reason));
    MgtMacHeaderInit(pAd, &DeauthHdr, SUBTYPE_DEAUTH, 0, pInfo->Addr, pAd->MlmeAux.Bssid);
    MakeOutgoingFrame(pOutBuffer,           &FrameLen, 
                      sizeof(HEADER_802_11),&DeauthHdr, 
                      2,                    &pInfo->Reason, 
                      END_OF_ARGS);
    MiniportMMRequest(pAd, 0, pOutBuffer, FrameLen);
	MlmeFreeMemory(pAd, pOutBuffer);
    
    pAd->StaCfg.DeauthReason = pInfo->Reason;
    COPY_MAC_ADDR(pAd->StaCfg.DeauthSta, pInfo->Addr);
    pAd->Mlme.AuthMachine.CurrState = AUTH_REQ_IDLE;
    Status = MLME_SUCCESS;
    MlmeEnqueue(pAd, MLME_CNTL_STATE_MACHINE, MT2_DEAUTH_CONF, 2, &Status);

	// send wireless event - for deauthentication
	if (pAd->CommonCfg.bWirelessEvent)
		RTMPSendWirelessEvent(pAd, IW_DEAUTH_EVENT_FLAG, pAd->MacTab.Content[BSSID_WCID].Addr, BSS0, 0); 
}

/*
    ==========================================================================
    Description:
        
	IRQL = DISPATCH_LEVEL

    ==========================================================================
 */
VOID AuthTimeoutAction(
    IN PRTMP_ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    USHORT Status;
    DBGPRINT(RT_DEBUG_TRACE, ("AUTH - AuthTimeoutAction\n"));
    pAd->Mlme.AuthMachine.CurrState = AUTH_REQ_IDLE;
    Status = MLME_REJ_TIMEOUT;
    MlmeEnqueue(pAd, MLME_CNTL_STATE_MACHINE, MT2_AUTH_CONF, 2, &Status);
}

/*
    ==========================================================================
    Description:
        
	IRQL = DISPATCH_LEVEL

    ==========================================================================
 */
VOID InvalidStateWhenAuth(
    IN PRTMP_ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    USHORT Status;
    DBGPRINT(RT_DEBUG_TRACE, ("AUTH - InvalidStateWhenAuth (state=%ld), reset AUTH state machine\n", pAd->Mlme.AuthMachine.CurrState));
    pAd->Mlme.AuthMachine.CurrState = AUTH_REQ_IDLE;
    Status = MLME_STATE_MACHINE_REJECT;
    MlmeEnqueue(pAd, MLME_CNTL_STATE_MACHINE, MT2_AUTH_CONF, 2, &Status);
}

/*
    ==========================================================================
    Description:
        Some STA/AP
    Note:
        This action should never trigger AUTH state transition, therefore we
        separate it from AUTH state machine, and make it as a standalone service
        
	IRQL = DISPATCH_LEVEL

    ==========================================================================
 */
VOID Cls2errAction(
    IN PRTMP_ADAPTER pAd, 
    IN PUCHAR pAddr) 
{
    HEADER_802_11 DeauthHdr;
    PUCHAR        pOutBuffer = NULL;
    NDIS_STATUS   NStatus;
    ULONG         FrameLen = 0;
    USHORT        Reason = REASON_CLS2ERR;
    
    NStatus = MlmeAllocateMemory(pAd, &pOutBuffer);  //Get an unused nonpaged memory
    if (NStatus != NDIS_STATUS_SUCCESS) 
        return;

    DBGPRINT(RT_DEBUG_TRACE, ("AUTH - Class 2 error, Send DEAUTH frame...\n"));
    MgtMacHeaderInit(pAd, &DeauthHdr, SUBTYPE_DEAUTH, 0, pAddr, pAd->MlmeAux.Bssid);
    MakeOutgoingFrame(pOutBuffer,           &FrameLen, 
                      sizeof(HEADER_802_11),&DeauthHdr, 
                      2,                    &Reason, 
                      END_OF_ARGS);
    MiniportMMRequest(pAd, 0, pOutBuffer, FrameLen);
	MlmeFreeMemory(pAd, pOutBuffer);

    pAd->StaCfg.DeauthReason = Reason;
    COPY_MAC_ADDR(pAd->StaCfg.DeauthSta, pAddr);
}