auth.c

台湾RALink公司的 rt2570无线 802.11g 网卡的 驱动的源代码 ,支持linux2.4以上的 内河

                } 
                else 
                {
                    // 2. shared key, need to be challenged
                    Seq++;
                    RemoteStatus = MLME_SUCCESS;
                    NStatus = MlmeAllocateMemory(pAd, (PVOID)&OutBuffer);  //Get an unused nonpaged memory
                    if(NStatus != NDIS_STATUS_SUCCESS) 
                    {
                        DBGPRINT(RT_DEBUG_TRACE, "AUTH - PeerAuthRspAtSeq2Action() allocate memory fail\n");
                        pAd->Mlme.AuthMachine.CurrState = AUTH_REQ_IDLE;
                        MlmeCntlConfirm(pAd, MT2_AUTH_CONF, MLME_FAIL_NO_RESOURCE);
                        return;
                    }
                    
                    DBGPRINT(RT_DEBUG_TRACE, "AUTH - Send AUTH request seq#3...\n");
                    MgtMacHeaderInit(pAd, &AuthHdr, SUBTYPE_AUTH, 0, &Addr2, &pAd->PortCfg.Bssid);
                    AuthHdr.Wep = 1;
                    // Encrypt challenge text & auth information
                    RTMPInitWepEngine(
                    	pAd,
                    	pAd->PortCfg.SharedKey[pAd->PortCfg.DefaultKeyId].Key,
                    	pAd->PortCfg.DefaultKeyId,
                    	pAd->PortCfg.SharedKey[pAd->PortCfg.DefaultKeyId].KeyLen,
                    	CyperChlgText);
					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(OutBuffer,            &FrameLen, 
                                      MAC_HDR_LEN,          &AuthHdr,  
                                      CIPHER_TEXT_LEN + 16, CyperChlgText, 
                                      END_OF_ARGS);
                    MiniportMMRequest(pAd, OutBuffer, FrameLen);

                    RTMPSetTimer(pAd, &pAd->Mlme.AuthAux.AuthTimer, AUTH_TIMEOUT); //AUTH_KEY_TIMEOUT);
                    pAd->Mlme.AuthMachine.CurrState = AUTH_WAIT_SEQ4;
                }
            } 
            else 
            {
                pAd->PortCfg.AuthFailReason = Status;
                COPY_MAC_ADDR(&pAd->PortCfg.AuthFailSta, &Addr2);
                pAd->Mlme.AuthMachine.CurrState = AUTH_REQ_IDLE;
                MlmeCntlConfirm(pAd, MT2_AUTH_CONF, Status);
            }
        }
    }
    else
    {
        DBGPRINT(RT_DEBUG_TRACE, "AUTH - PeerAuthSanity() sanity check fail\n");
    }
}

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

    ==========================================================================
 */
VOID PeerAuthRspAtSeq4Action(
    IN PRT2570ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    MACADDR       Addr2;
    USHORT        Alg, Seq, Status;
    CHAR          ChlgText[CIPHER_TEXT_LEN];

    if(PeerAuthSanity(pAd, Elem->Msg, Elem->MsgLen, &Addr2, &Alg, &Seq, &Status, ChlgText)) 
    {
        if(MAC_ADDR_EQUAL(&(pAd->Mlme.AuthAux.Addr), &Addr2) && Seq == 4) 
        {
            DBGPRINT(RT_DEBUG_TRACE, "AUTH - Receive AUTH_RSP seq#4 to me\n");
            RTMPCancelTimer(&pAd->Mlme.AuthAux.AuthTimer);
            
            if(Status == MLME_SUCCESS) 
            {
                pAd->PortCfg.Mauth = TRUE;
            } 
            else 
            {
                pAd->PortCfg.AuthFailReason = Status;
                pAd->PortCfg.AuthFailSta = Addr2;
            }                

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

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

    ==========================================================================
 */
VOID MlmeDeauthReqAction(
    IN PRT2570ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    MLME_DEAUTH_REQ_STRUCT *Info;
    MACHDR        Hdr;
    UCHAR        *OutBuffer = NULL;
    NDIS_STATUS   NStatus;
    ULONG         FrameLen = 0;

    Info = (MLME_DEAUTH_REQ_STRUCT *)Elem->Msg;

    NStatus = MlmeAllocateMemory(pAd, (PVOID)&OutBuffer);  //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;
        MlmeCntlConfirm(pAd, MT2_DEAUTH_CONF, MLME_FAIL_NO_RESOURCE);
        return;
    }

    DBGPRINT(RT_DEBUG_TRACE, "AUTH - Send DE-AUTH request...\n");
    MgtMacHeaderInit(pAd, &Hdr, SUBTYPE_DEAUTH, 0, &Info->Addr, &pAd->PortCfg.Bssid);
    MakeOutgoingFrame(OutBuffer,            &FrameLen, 
                      sizeof(MACHDR),       &Hdr, 
                      2,                    &Info->Reason, 
                      END_OF_ARGS);
    MiniportMMRequest(pAd, OutBuffer, FrameLen);
    
    pAd->PortCfg.DeauthReason = Info->Reason;
    COPY_MAC_ADDR(&pAd->PortCfg.DeauthSta, &Info->Addr);
    pAd->Mlme.AuthMachine.CurrState = AUTH_REQ_IDLE;
    MlmeCntlConfirm(pAd, MT2_DEAUTH_CONF, MLME_SUCCESS);
}

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

    ==========================================================================
 */
VOID AuthTimeoutAction(
    IN PRT2570ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    DBGPRINT(RT_DEBUG_TRACE, "AUTH - AuthTimeoutAction\n");
    pAd->Mlme.AuthMachine.CurrState = AUTH_REQ_IDLE;
    MlmeCntlConfirm(pAd, MT2_AUTH_CONF, MLME_REJ_TIMEOUT);
}

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

    ==========================================================================
 */
VOID InvalidStateWhenAuth(
    IN PRT2570ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    DBGPRINT(RT_DEBUG_TRACE, "AUTH - InvalidStateWhenAuth (state=%d), reset AUTH state machine\n", pAd->Mlme.AuthMachine.CurrState);
    pAd->Mlme.AuthMachine.CurrState = AUTH_REQ_IDLE;
    MlmeCntlConfirm(pAd, MT2_AUTH_CONF, MLME_STATE_MACHINE_REJECT);
}

/*
    ==========================================================================
    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 PRT2570ADAPTER pAd, 
    IN PMACADDR pAddr) 
{
    MACHDR        Hdr;
    UCHAR        *OutBuffer = NULL;
    NDIS_STATUS   NStatus;
    ULONG         FrameLen = 0;
    USHORT        Reason = REASON_CLS2ERR;
    
    NStatus = MlmeAllocateMemory(pAd, (PVOID)&OutBuffer);  //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, &Hdr, SUBTYPE_DEAUTH, 0, pAddr, &pAd->PortCfg.Bssid);
    MakeOutgoingFrame(OutBuffer,            &FrameLen, 
                      sizeof(MACHDR),       &Hdr, 
                      2,                    &Reason, 
                      END_OF_ARGS);
    MiniportMMRequest(pAd, OutBuffer, FrameLen);

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