C++ Pdu::set_context_engine_id方法代码示例

/////////////////////////////////////////////////////////////////////////////
// 函数：SetRequest                                                        //
// 说明：设置简单变量的结果                                                //
// 参数：无                                                                //
// 返回值：                                                                //
//      成功返回0，否则返回一个非0 值                                      //
/////////////////////////////////////////////////////////////////////////////
int BasicSNMP::SetRequest()
{
	int nResult = 0;
	Pdu pdu;                               // construct a Pdu object
	Vb vb;                                 // construct a Vb object
	vb.set_oid(oid);                      // set the Oid portion of the Vb
	vb.set_value(m_nOIDValue);                      // set the Oid portion of the Vb
	pdu += vb;   

	SnmpTarget *target;// = &ctarget;
	if(version ==version3)
	{//If SNMP Version Is 3
		nResult = InitUTarget();//Init UTarget
		pdu.set_security_level( m_nSecurityLevel);//Set the Security Level portion of Pdu
		pdu.set_context_name (contextName);//Set the Context Name portion of Pdu
		pdu.set_context_engine_id(contextEngineID);//Set the Context Engine ID portion of Pdu
		target = &utarget; //Set SNMP Target
	}
	else
	{
		target = &ctarget; //Set SNMP Target
	}

	nResult = pSnmp->set(pdu,*target);//Get Reques

	return nResult;
}

// issue a GET-NEXT request
void MainWindow::push_button_get_next_clicked()
{
  int status;

  if (!snmp)
    return;

  push_button_get_next->setEnabled(false);

  // Create a Oid and a address object from the entered values
  Oid oid(line_edit_obj_id->text());
  UdpAddress address(line_edit_target->text());

  // check if the address is valid
  // One problem here: if a hostname is entered, a blocking DNS lookup
  // is done by the address object.
  if (!address.valid())
  {
    QString err = QString("\nInvalid Address or DNS Name: %1\n")
                .arg(line_edit_target->text());
    text_edit_output->append(err);
    push_button_get_next->setEnabled(true);
    return;
  }

  Pdu pdu; // empty Pdu
  Vb vb;   // empty Vb
  SnmpTarget *target; // will point to a CTarget(v1/v2c) or UTarget (v3)

  // Set the Oid part of the Vb
  vb.set_oid(oid);

  // Add the Vb to the Pdu
  pdu += vb;

  // Get retries and timeout values
  int retries = spin_box_retries->value();
  int timeout = 100 * spin_box_timeout->value();
  
  if (radio_button_v3->isChecked())
  {
    // For SNMPv3 we need a UTarget object
    UTarget *utarget = new UTarget(address);

    utarget->set_version(version3);

    utarget->set_security_model(SNMP_SECURITY_MODEL_USM);
    utarget->set_security_name(combo_box_sec_name->currentText());
    
    target = utarget;

    // set the security level to use
    if (combo_box_sec_level->currentText() == "noAuthNoPriv")
      pdu.set_security_level(SNMP_SECURITY_LEVEL_NOAUTH_NOPRIV);
    else if (combo_box_sec_level->currentText() == "authNoPriv")
      pdu.set_security_level(SNMP_SECURITY_LEVEL_AUTH_NOPRIV);
    else
      pdu.set_security_level(SNMP_SECURITY_LEVEL_AUTH_PRIV);

    // Not needed, as snmp++ will set it, if the user does not set it
    pdu.set_context_name(line_edit_context_name->text());
    pdu.set_context_engine_id(line_edit_context_engine_id->text());
  }
  else
  {
    // For SNMPv1/v2c we need a CTarget
    CTarget *ctarget = new CTarget(address);

    if (radio_button_v2->isChecked())
      ctarget->set_version(version2c);
    else
      ctarget->set_version(version1);

    // set the community
    ctarget->set_readcommunity( line_edit_community->text());

    target = ctarget;
  }

  target->set_retry(retries);            // set the number of auto retries
  target->set_timeout(timeout);          // set timeout

  // Now do an async get_next
  status = snmp->get_next(pdu, *target, callback, this);

  // Could we send it?
  if (status == SNMP_CLASS_SUCCESS)
  {
    timer.start(100);
  }
  else
  {
    QString err = QString("\nCould not send async GETNEXT request: %1\n")
                         .arg(Snmp::error_msg(status));
    text_edit_output->append(err);
    push_button_get_next->setEnabled(true);
  }

  // the target is no longer needed
//.........这里部分代码省略.........

//.........这里部分代码省略.........

        int construct_status;
        v3_MP = new v3MP(engineId, snmpEngineBoots, construct_status);

        USM *usm = v3_MP->get_usm();
        usm->add_usm_user(securityName,
                          authProtocol, privProtocol,
                          authPassword, privPassword);
    }
    else
    {
        // MUST create a dummy v3MP object if _SNMPv3 is enabled!
        int construct_status;
        v3_MP = new v3MP("dummy", 0, construct_status);
    }
#endif

    //--------[ build up SNMP++ object needed ]-------------------------------
    Pdu pdu;                               // construct a Pdu object
    Vb vb;                                 // construct a Vb object
    vb.set_oid( oid);                      // set the Oid portion of the Vb
    pdu += vb;                             // add the vb to the Pdu

    address.set_port(port);
    CTarget ctarget( address);             // make a target using the address
#ifdef _SNMPv3
    UTarget utarget( address);

    if (version == version3) {
        utarget.set_version( version);          // set the SNMP version SNMPV1 or V2 or V3
        utarget.set_retry( retries);            // set the number of auto retries
        utarget.set_timeout( timeout);          // set timeout
        utarget.set_security_model( securityModel);
        utarget.set_security_name( securityName);
        pdu.set_security_level( securityLevel);
        pdu.set_context_name (contextName);
        pdu.set_context_engine_id(contextEngineID);
    }
    else {
#endif
        ctarget.set_version( version);         // set the SNMP version SNMPV1 or V2
        ctarget.set_retry( retries);           // set the number of auto retries
        ctarget.set_timeout( timeout);         // set timeout
        ctarget.set_readcommunity( community); // set the read community name
#ifdef _SNMPv3
    }
#endif

    //-------[ issue the request, blocked mode ]-----------------------------
    cout << "SNMP++ GetNext to " << argv[1] << " SNMPV"
#ifdef _SNMPv3
         << ((version==version3) ? (version) : (version+1))
#else
         << (version+1)
#endif
         << " Retries=" << retries
         << " Timeout=" << timeout * 10 <<"ms";
#ifdef _SNMPv3
    if (version == version3)
        cout << endl
             << "securityName= " << securityName.get_printable()
             << ", securityLevel= " << securityLevel
             << ", securityModel= " << securityModel << endl
             << "contextName= " << contextName.get_printable()
             << ", contextEngineID= " << contextEngineID.get_printable()
             << endl;
    else
#endif
        cout << " Community=" << community.get_printable() << endl << flush;

    SnmpTarget *target;
#ifdef _SNMPv3
    if (version == version3)
        target = &utarget;
    else
#endif
        target = &ctarget;

    status = snmp.get_next( pdu, *target, callback,NULL);

    if (status == SNMP_CLASS_SUCCESS)
    {
        cout << "Async GetNext Request sent." << endl;
    }
    else
        cout << "SNMP++ GetNext Error, " << snmp.error_msg( status)
             << " (" << status <<")" << endl ;

    for (int t=1; t<=10; t++)
    {
        snmp.eventListHolder->SNMPProcessPendingEvents();
#ifdef WIN32
        Sleep(1000);
#else
        sleep(1);
#endif
    }

    Snmp::socket_cleanup();  // Shut down socket subsystem
}

int CSVBaseSNMP::GetBulkRequest(MonitorResult &ResultList)
{
	
	WriteLog("\n\n*****************************");
	WriteLog("GetBulkRequest!");

    static const int BULK_BUFF = 10;
    int nResult = 0;
    char chPrvOID[MAX_BUFF_LEN] = {0};
    bool bEnd = false;
    Pdu pdu;                                                // construct a Pdu object
    Vb vb;                                                  // construct a Vb object
    vb.set_oid( oid);                                       // set the Oid portion of the Vb
    pdu += vb;                                              // add the vb to the Pdu

    SnmpTarget *target;
    if(version ==version3)
    {//If SNMP Version Is 3
        nResult = InitUTarget();                            //Init UTarget
        pdu.set_security_level( m_lSecurityLevel);          //Set the Security Level portion of Pdu
        pdu.set_context_name (m_szContextName);             //Set the Context Name portion of Pdu
        pdu.set_context_engine_id(m_szContextEngineID);     //Set the Context Engine ID portion of Pdu
        target = &m_Utarget;                                //Set SNMP Target
    }
    else
    {
        target = &m_Ctarget; //Set SNMP Target
    }
    
    try
    {
        if(m_pSnmp)
        {
            int nIndex = 0, i = 0;
            while (( nResult = m_pSnmp->get_bulk(pdu, *target, 0, BULK_BUFF)) == SNMP_CLASS_SUCCESS) 
            {
                if(bEnd)
                    break;
                for (i = 0; i < pdu.get_vb_count(); i ++) 
                {
                    pdu.get_vb( vb, i);
                    if (pdu.get_type() == REPORT_MSG) 
                    {
                        Oid tmp;
                        vb.get_oid(tmp);
                        return -5;
                    }
                    // look for var bind exception, applies to v2 only   
                    if ( vb.get_syntax() != sNMP_SYNTAX_ENDOFMIBVIEW)
                    {
                        string szOID =  vb.get_printable_oid();
						WriteLog(szOID.c_str());
                        int nPosition = static_cast<int>(szOID.find(m_szStartID));
                        if(nPosition < 0)
                        {
                            bEnd = true;
                            break;
                        }
                        if(static_cast<int>(strlen(chPrvOID)) > 0)
                        {//如果上次OID不为空
                            if(strcmp(vb.get_printable_oid(), chPrvOID) == 0)
                            {//比较OID名称是否相同，相同则退出循环
                                bEnd = true;
                                break;
                            }
                        }
				        //结果赋值
                        if(static_cast<int>(strlen(vb.get_printable_oid())) < MAX_BUFF_LEN)
                            strcpy(chPrvOID, vb.get_printable_oid());

						
                        SNMP_Monitor_Result result;
						result.m_szOID = vb.get_printable_oid();
						if(strcmp(result.m_szOID.substr(0,19).c_str(),"1.3.6.1.2.1.2.2.1.2")==0)
						{
							char str[100];
							vb.get_value(str);
							result.m_szValue=str;
							WriteLog(str);
						}
						else
							result.m_szValue = vb.get_printable_value();
        
                        //nPosition = static_cast<int>(result.m_szOID.find(m_szStartID.c_str()) + m_szStartID.length());
                        //if(nPosition > 0)
                        //{
                        result.m_szIndex = result.m_szOID.substr(m_szStartID.length() + 1);
                        result.m_szOID = result.m_szOID.substr(0, m_szStartID.length());
                        //PrintDebugString("index is " + result.m_szIndex);
                        //}
						WriteLog(result.m_szIndex.c_str());
						WriteLog(result.m_szValue.c_str());

                        ResultList[nIndex] = result;
                        nIndex ++;
                    }
                    else 
                    {
                        m_szErrorMsg = "End of MIB Reached";
                        return -4;
//.........这里部分代码省略.........

int CSVBaseSNMP::GetRequest(MonitorResult &ResultList)
{
	WriteLog("\n\n*****************************");
	WriteLog("GetRequest!");

    int nResult = 0;
    Pdu pdu;                                                    // construct a Pdu object
    Vb vb;                                                      // construct a Vb object
    vb.set_oid( oid);                                           // set the Oid portion of the Vb
    pdu += vb;                                                  // add the vb to the Pdu

    SnmpTarget *target;
    if(version == version3)
    {//If SNMP Version Is 3
        nResult = InitUTarget();                                //Init UTarget
        pdu.set_security_level( m_lSecurityLevel);              //Set the Security Level portion of Pdu
        pdu.set_context_name(m_szContextName);                  //Set the Context Name portion of Pdu
        pdu.set_context_engine_id(m_szContextEngineID);         //Set the Context Engine ID portion of Pdu
        target = &m_Utarget;                                    //Set SNMP Target
    }
    else
    {
        target = &m_Ctarget;                                    //Set SNMP Target
    }

    try
    {
        //cout << address << endl;
        //cout << oid.get_printable() << endl;
        if(m_pSnmp)
        {
            nResult = m_pSnmp->get( pdu,*target);               //Get Reques
            if(nResult != 0)
            {//当有错误发生时候
                m_szErrorMsg =  m_pSnmp->error_msg(nResult);
                return nResult;
            }
            for ( int i = 0; i < pdu.get_vb_count(); i ++)
            {
                pdu.get_vb(vb, i);
                if (pdu.get_type() == REPORT_MSG) 
                {
                    Oid tmp;
                    vb.get_oid(tmp);
                    return -5;
                }
                // look for var bind exception, applies to v2 only   
                if ( vb.get_syntax() != sNMP_SYNTAX_ENDOFMIBVIEW)
                {
                    SNMP_Monitor_Result result;
                    result.m_szOID = vb.get_printable_oid();
                    result.m_szValue = vb.get_printable_value();
                    size_t nPosition = result.m_szOID.rfind(".");
                    if(nPosition > 0)
                    {
                        result.m_szIndex = result.m_szOID.substr(nPosition);
                        result.m_szOID = result.m_szOID.substr(0, nPosition - 1);
                    }

					WriteLog(result.m_szIndex.c_str());
					WriteLog(result.m_szValue.c_str());

                    ResultList[i] = result;
                }
                else 
                {
                    m_szErrorMsg =  "End of MIB Reached";
                    return -4;
                }
            }
        }
    }
    catch(...)
    {
        DWORD dwError = GetLastError();
        char szMsg[512] = {0};
        int nlen = sprintf(szMsg, "Error Number is %08X --*GetRequest*---", dwError);
        DumpLog("snmpmonitor-request", szMsg, nlen);
    }
    return nResult;
}

//.........这里部分代码省略.........
     const char *filename = "snmpv3_boot_counter";
     unsigned int snmpEngineBoots = 0;
     int status;

     status = getBootCounter(filename, engineId, snmpEngineBoots);
     if ((status != SNMPv3_OK) && (status < SNMPv3_FILEOPEN_ERROR))
     {
       cout << "Error loading snmpEngineBoots counter: " << status << endl;
       return 1;
     }
     snmpEngineBoots++;
     status = saveBootCounter(filename, engineId, snmpEngineBoots);
     if (status != SNMPv3_OK)
     {
       cout << "Error saving snmpEngineBoots counter: " << status << endl;
       return 1;
     }

     int construct_status;
     v3_MP = new v3MP(engineId, snmpEngineBoots, construct_status);
     if (construct_status != SNMPv3_MP_OK)
     {
       cout << "Error initializing v3MP: " << construct_status << endl;
       return 1;
     }

     usm = v3_MP->get_usm();
     usm->add_usm_user(securityName,
		       authProtocol, privProtocol,
		       authPassword, privPassword);
   }
   else
   {
     // MUST create a dummy v3MP object if _SNMPv3 is enabled!
     int construct_status;
     v3_MP = new v3MP("dummy", 0, construct_status);
   }

   //--------[ build up SNMP++ object needed ]-------------------------------
   Pdu pdu;                               // construct a Pdu object
   Vb vb;                                 // construct a Vb object
   vb.set_oid(Oid("1.3.6.1.2.1.1.1.0"));  // set the Oid portion of the Vb
   pdu += vb;                             // add the vb to the Pdu

   address.set_port(port);
   CTarget ctarget( address);             // make a target using the address
   UTarget utarget( address);

   if (version == version3) {
     utarget.set_version( version);          // set the SNMP version SNMPV1 or V2 or V3
     utarget.set_retry( retries);            // set the number of auto retries
     utarget.set_timeout( timeout);          // set timeout
     utarget.set_security_model( securityModel);
     utarget.set_security_name( securityName);
     pdu.set_security_level( securityLevel);
     pdu.set_context_name (contextName);
     pdu.set_context_engine_id(contextEngineID);
   }
   else {
     ctarget.set_version( version);         // set the SNMP version SNMPV1 or V2
     ctarget.set_retry( retries);           // set the number of auto retries
     ctarget.set_timeout( timeout);         // set timeout
     ctarget.set_readcommunity( community); // set the read community name
   }

   //-------[ issue the request, blocked mode ]-----------------------------
   cout << "SNMP++ Get to " << argv[1] << " SNMPV" 

        << ((version==version3) ? (version) : (version+1)) 
        << " Retries=" << retries
        << " Timeout=" << timeout * 10 <<"ms"; 
   if (version == version3)
     cout << endl
          << "securityName= " << securityName.get_printable()
          << ", securityLevel= " << securityLevel
          << ", securityModel= " << securityModel << endl
          << "contextName= " << contextName.get_printable()
          << ", contextEngineID= " << contextEngineID.get_printable()
          << endl;
   else
     cout << " Community=" << community.get_printable() << endl << flush;

   SnmpTarget *target;
   if (version == version3)
     target = &utarget;
   else
     target = &ctarget;
   Pdu pduKeyChange;
   if (version == version3) {
     pduKeyChange.set_security_level( securityLevel);
     pduKeyChange.set_context_name (contextName);
     pduKeyChange.set_context_engine_id(contextEngineID);
   }
   
   snmp.get( pdu, *target);

   KeyChange(&snmp, pduKeyChange, newUser, newPassword, *target, AUTHKEY);

   Snmp::socket_cleanup();  // Shut down socket subsystem
} 

/////////////////////////////////////////////////////////////////////////////
// 函数：GetBulkRequest                                                    //
// 说明：得到表格变量的结果                                                //
// 参数：无                                                                //
// 返回值：                                                                //
//      成功返回0，否则返回一个非0 值                                      //
/////////////////////////////////////////////////////////////////////////////
int BasicSNMP::GetBulkRequest()
{
	//puts("BasicSNMP::GetBulkRequest");
	int nResult = 0;
	char chPrvOID[MAX_BUFF_LEN] = {0};
	bool bEnd = false;
	Pdu pdu;                               // construct a Pdu object
	Vb vb;                                 // construct a Vb object
	vb.set_oid( oid);                      // set the Oid portion of the Vb
	pdu += vb;                             // add the vb to the Pdu

	DestroyResultList();

	SnmpTarget *target;// = &ctarget;
	if(version ==version3)
	{//If SNMP Version Is 3
		nResult = InitUTarget();//Init UTarget
		pdu.set_security_level( m_nSecurityLevel);//Set the Security Level portion of Pdu
		pdu.set_context_name (contextName);//Set the Context Name portion of Pdu
		pdu.set_context_engine_id(contextEngineID);//Set the Context Engine ID portion of Pdu
		target = &utarget; //Set SNMP Target
	}
	else
	{
		target = &ctarget; //Set SNMP Target
	}

	OIDResult *pTemp = new OIDResult();
	OIDResult *pPrevResult = pTemp;
	//pTemp->pNext = NULL;
	pResult = pTemp;
    
    try
    {
	//SnmpTarget *target = &ctarget;
	while (( nResult = pSnmp->get_next(pdu, *target))== SNMP_CLASS_SUCCESS) 
	{
		if(bEnd)
		{
			break;
		}
		for ( int z=0;z<pdu.get_vb_count(); z++) 
		{
			pdu.get_vb( vb,z);
			if (pdu.get_type() == REPORT_MSG) 
			{
				Oid tmp;
				vb.get_oid(tmp);
				return -5;
			}
			// look for var bind exception, applies to v2 only   
			if ( vb.get_syntax() != sNMP_SYNTAX_ENDOFMIBVIEW)
			{
				char chOID[MAX_BUFF_LEN] = {0};
				sprintf(chOID, "%s", vb.get_printable_oid());
				char *pDest = strstr(chOID, chOIDStart);
				if(pDest == NULL)
				{//OID名称是否包含开始OID
					bEnd = true;
					break;
				}
				if(strlen(chPrvOID)>0)
				{//如果上次OID不为空
					if(strcmp(vb.get_printable_oid(), chPrvOID) == 0)
					{//比较OID名称是否相同，相同则退出循环
						bEnd = true;
						break;
					}
				}
				//结果赋值
				strcpy(chPrvOID, vb.get_printable_oid());				
				strcpy(pTemp->chOID, vb.get_printable_oid());
				strcpy(pTemp->chValue,vb.get_printable_value());
				
				char *pIndex;
				pIndex=pTemp->chOID+strlen(oid.get_printable())+1;

				//pTemp->nLen = static_cast<int>(strlen(pTemp->chValue));
				//char *pdest = strrchr(pTemp->chOID, '.');
				//int nLast = (int)(pdest - pTemp->chOID + 1);
				//memcpy(pTemp->chIndex, (pTemp->chOID)+nLast, strlen(pTemp->chOID) - nLast);
				strcpy(pTemp->chIndex,pIndex);
				//pTemp->chIndex[strlen(pTemp->chOID) - nLast] = '\0';
				
			}
			else 
			{
				memset(chErrMsg, 0 , MAX_BUFF_LEN);
				strcpy(chErrMsg, "End of MIB Reached");
				return -4;
			}
			if(pTemp->pNext == NULL)
			{
//.........这里部分代码省略.........

/////////////////////////////////////////////////////////////////////////////
// 函数：GetRequest                                                        //
// 说明：得到简单变量的结果                                                //
// 参数：无                                                                //
// 返回值：                                                                //
//      成功返回0，否则返回一个非0 值                                      //
/////////////////////////////////////////////////////////////////////////////
int BasicSNMP::GetRequest()
{
    static const char chFile[] = "smmpmonitor.log";
    int nResult = 0;
	Pdu pdu;                               // construct a Pdu object
	Vb vb;                                 // construct a Vb object
	vb.set_oid( oid);                      // set the Oid portion of the Vb
	pdu += vb;                             // add the vb to the Pdu
    
	DestroyResultList();

	SnmpTarget *target;// = &ctarget;
	if(version ==version3)
	{//If SNMP Version Is 3
		nResult = InitUTarget();//Init UTarget
		pdu.set_security_level( m_nSecurityLevel);//Set the Security Level portion of Pdu
		pdu.set_context_name (contextName);//Set the Context Name portion of Pdu
		pdu.set_context_engine_id(contextEngineID);//Set the Context Engine ID portion of Pdu
		target = &utarget; //Set SNMP Target
	}
	else
	{
		target = &ctarget; //Set SNMP Target
	}

	OIDResult *pTemp = new OIDResult();//construct OIDResult Struct
	pTemp->pNext = NULL;
	pResult = pTemp;

    try
    {
		nResult = pSnmp->get( pdu,*target);//Get Reques
		if(nResult != 0)
		{//当有错误发生时候
			strcpy(chErrMsg, pSnmp->error_msg(nResult));
			return nResult;
		}
		for ( int z = 0; z < pdu.get_vb_count(); z++)
		{
			pdu.get_vb( vb,z);
			if (pdu.get_type() == REPORT_MSG) 
			{
				Oid tmp;
				vb.get_oid(tmp);
				return -5;
			}
			// look for var bind exception, applies to v2 only   
			if ( vb.get_syntax() != sNMP_SYNTAX_ENDOFMIBVIEW)
			{
				//Set OIDResult Value
                if(static_cast<int>(strlen(vb.get_printable_oid())) < MAX_BUFF_LEN)
				    strcpy(pTemp->chOID,  vb.get_printable_oid());

                if(static_cast<int>(strlen(vb.get_printable_value())) < MAX_BUFF_LEN)
                {
				    strcpy(pTemp->chValue, vb.get_printable_value());
				    //pTemp->nLen = static_cast<int>(strlen(pTemp->chValue));
                }
                char *pdest = strrchr(pTemp->chOID, '.');
                if(pdest)
                {
                    (*pdest) = '\0';
                    pdest ++;
                    strcpy(pTemp->chIndex, pdest);
                }
                //if(pdest)
                //{
                //    int nLast = (int)(pdest - pTemp->chOID + 1);
                //    memcpy(pTemp->chIndex, (pTemp->chOID)+nLast, strlen(pTemp->chOID) - nLast);
                //    pTemp->chIndex[strlen(pTemp->chOID) - nLast] = '\0';
                //}
			}
			else 
			{
				memset(chErrMsg, 0 , MAX_BUFF_LEN);
				strcpy(chErrMsg, "End of MIB Reached");
				return -4;
			}
		}	
    }
    catch(...)
    {
        DWORD dwError = GetLastError();
        char szMsg[512] = {0};
        int nlen = sprintf(szMsg, "Error Number is %08X --*GetRequest*---", dwError);
        DumpLog(chFile, szMsg, nlen);
        //cout << "Error Number is " << dwError << "---*GetRequest*---" << endl;
    }
    return nResult;
}

/////////////////////////////////////////////////////////////////////////////
// 函数：GetNextRequest                                                    //
// 说明：以当前OID变量为开始，得到下一个简单变量的结果                     //
// 参数：无                                                                //
// 返回值：                                                                //
//      成功返回0，否则返回一个非0 值                                      //
/////////////////////////////////////////////////////////////////////////////
int BasicSNMP::GetNextRequest()
{
	int nResult = 0;
	Pdu pdu;                               // construct a Pdu object
	Vb vb;                                 // construct a Vb object
	vb.set_oid( oid);                      // set the Oid portion of the Vb
	pdu += vb;                             // add the vb to the Pdu

	DestroyResultList();

	SnmpTarget *target;// = &ctarget;
	if(version ==version3)
	{//If SNMP Version Is 3
		nResult = InitUTarget();//Init UTarget
		pdu.set_security_level( m_nSecurityLevel);//Set the Security Level portion of Pdu
		pdu.set_context_name (contextName);//Set the Context Name portion of Pdu
		pdu.set_context_engine_id(contextEngineID);//Set the Context Engine ID portion of Pdu
		target = &utarget; //Set SNMP Target
	}
	else
	{
		target = &ctarget; //Set SNMP Target
	}


	OIDResult *pTemp = new OIDResult();
	pTemp->pNext = NULL;
	pResult = pTemp;

	//SnmpTarget *target = &ctarget;
	nResult = pSnmp->get_next( pdu,*target);
	if(nResult != 0)
	{//当有错误发生时候
		strcpy(chErrMsg, pSnmp->error_msg(nResult));
	}
	for ( int z=0;z<pdu.get_vb_count(); z++) 
	{
		pdu.get_vb( vb,z);
		if (pdu.get_type() == REPORT_MSG) 
		{
			Oid tmp;
			vb.get_oid(tmp);
			return -5;
		}
		// look for var bind exception, applies to v2 only   
		if ( vb.get_syntax() != sNMP_SYNTAX_ENDOFMIBVIEW)
		{
			strcpy(pTemp->chOID, vb.get_printable_oid());
			strcpy(pTemp->chValue,vb.get_printable_value());
			//pTemp->nLen = static_cast<int>(strlen(pTemp->chValue));
			char *pdest = strrchr(pTemp->chOID, '.');
			int nLast = (int)(pdest - pTemp->chOID + 1);
			memcpy(pTemp->chIndex, (pTemp->chOID)+nLast, strlen(pTemp->chOID) - nLast);
			pTemp->chIndex[strlen(pTemp->chOID) - nLast] = '\0';
			oid = pTemp->chOID;
		}
		else 
		{
//			memset(chErrMsg, 0 , MAX_BUFF_LEN);
//			strcpy(chErrMsg, "End of MIB Reached");
			return -4;
		}
	}
	return nResult;
}

//.........这里部分代码省略.........
       return 1;
     }

     int construct_status;
     v3_MP = new v3MP(engineId, snmpEngineBoots, construct_status);

     USM *usm = v3_MP->get_usm();
     usm->add_usm_user(securityName,
		       authProtocol, privProtocol,
		       authPassword, privPassword);
   }
   else
   {
     // MUST create a dummy v3MP object if _SNMPv3 is enabled!
     int construct_status;
     v3_MP = new v3MP("dummy", 0, construct_status);
   }
#endif

   //--------[ build up SNMP++ object needed ]-------------------------------
   address.set_port(port);
   CTarget ctarget( address);             // make a target using the address
#ifdef _SNMPv3
   UTarget utarget( address);

   if (version == version3) {
     utarget.set_version( version);          // set the SNMP version SNMPV1 or V2 or V3
     utarget.set_retry( retries);            // set the number of auto retries
     utarget.set_timeout( timeout);          // set timeout
     utarget.set_security_model( securityModel);
     utarget.set_security_name( securityName);
     pdu.set_security_level( securityLevel);
     pdu.set_context_name (contextName);
     pdu.set_context_engine_id(contextEngineID);
   }
   else {
#endif
     ctarget.set_version( version);         // set the SNMP version SNMPV1 or V2
     ctarget.set_retry( retries);           // set the number of auto retries
     ctarget.set_timeout( timeout);         // set timeout
     ctarget.set_readcommunity( community); // set the read community name
#ifdef _SNMPv3
   }
#endif

   //-------[ issue the request, blocked mode ]-----------------------------
   cout << "SNMP++ GetBulk to " << argv[1] << " SNMPV" 
#ifdef _SNMPv3
        << ((version==version3) ? (version) : (version+1))
#else
        << (version+1)
#endif
        << " Retries=" << retries
	<< " Timeout=" << timeout << "ms"
	<< " Non Reptrs=" << non_reps
	<< " Max Reps=" << max_reps << endl;
#ifdef _SNMPv3
   if (version == version3)
     cout << endl
          << "securityName= " << securityName.get_printable()
          << ", securityLevel= " << securityLevel
          << ", securityModel= " << securityModel << endl
          << "contextName= " << contextName.get_printable()
          << ", contextEngineID= " << contextEngineID.get_printable()
          << endl;
   else

// unload the data into SNMP++ objects
int SnmpMessage::unload(Pdu &pdu,                 // Pdu object
			OctetStr &community,      // community object
			snmp_version &version,    // SNMP version #
                        OctetStr *engine_id,      // optional v3
                        OctetStr *security_name,  // optional v3
                        long int *security_model,
                        UdpAddress *from_addr,
                        Snmp *snmp_session)
{
  pdu.clear();

  if (!valid_flag)
    return SNMP_CLASS_INVALID;

  snmp_pdu *raw_pdu;
  raw_pdu = snmp_pdu_create(0); // do a "snmp_free_pdu( raw_pdu)" before return

  int status;

#ifdef _SNMPv3
  OctetStr context_engine_id;
  OctetStr context_name;
  long int security_level = SNMP_SECURITY_LEVEL_NOAUTH_NOPRIV;

  if ((security_model) && (security_name) && (engine_id) && (snmp_session)) {
    status = v3MP::I->snmp_parse(snmp_session, raw_pdu,
                         databuff, (int)bufflen, *engine_id,
                         *security_name, context_engine_id, context_name,
                         security_level, *security_model, version, *from_addr);
    if (status != SNMPv3_MP_OK) {
      pdu.set_request_id( raw_pdu->reqid);
      pdu.set_type( raw_pdu->command);
      snmp_free_pdu( raw_pdu);
      return status;
    }
    pdu.set_context_engine_id(context_engine_id);
    pdu.set_context_name(context_name);
    pdu.set_security_level(security_level);
    pdu.set_message_id(raw_pdu->msgid);
    pdu.set_maxsize_scopedpdu(raw_pdu->maxsize_scopedpdu);
  }
  else {
#endif
    unsigned char community_name[MAX_LEN_COMMUNITY + 1];
    int           community_len = MAX_LEN_COMMUNITY + 1;

    status = snmp_parse(raw_pdu, databuff, (int) bufflen,
                        community_name, community_len, version);
    if (status != SNMP_CLASS_SUCCESS) {
      snmp_free_pdu(raw_pdu);
      return status;
    }
    community.set_data( community_name, community_len);

#ifdef _SNMPv3
  }
#endif
  // load up the SNMP++ variables
  pdu.set_request_id(raw_pdu->reqid);
  pdu.set_error_status((int) raw_pdu->errstat);
  pdu.set_error_index((int) raw_pdu->errindex);
  pdu.set_type( raw_pdu->command);

  // deal with traps a little different
  if ( raw_pdu->command == sNMP_PDU_V1TRAP) {
    // timestamp
    TimeTicks timestamp;
    timestamp = raw_pdu->time;
    pdu.set_notify_timestamp( timestamp);

    // set the agent address
    IpAddress agent_addr(inet_ntoa(raw_pdu->agent_addr.sin_addr));
    if (agent_addr != "0.0.0.0")
    {
      pdu.set_v1_trap_address(agent_addr);

      LOG_BEGIN(DEBUG_LOG | 4);
      LOG("SNMPMessage: Trap address of received v1 trap");
      LOG(agent_addr.get_printable());
      LOG_END;
    }

    // set enterprise, notifyid
    Oid enterprise;

    if (raw_pdu->enterprise_length >0) {
      for (int i=0; i< raw_pdu->enterprise_length; i++) {
        enterprise += (int) (raw_pdu->enterprise[i]);
      }
      pdu.set_notify_enterprise(enterprise);
    }
    switch (raw_pdu->trap_type) {
    case 0:
      pdu.set_notify_id(coldStart);
      break;

    case 1:
      pdu.set_notify_id(warmStart);
      break;
//.........这里部分代码省略.........

void* runable(void *data) {
  //--------[ build up SNMP++ object needed ]-------------------------------
  ssync.lock();
  printf("HELLO:%s\n", community.get_printable());
  int t = *((int*)data);
  Pdu pdu;                              // construct a Pdu object
  Vb vb;                                // construct a Vb object
  vb.set_oid("1");                     // set the Oid portion of the Vb
  pdu += vb;                            // add the vb to the Pdu
  CTarget ctarget(address[t]);            // make a target using the address
#ifdef _SNMPv3
  UTarget utarget(address[t]);

  if (version == version3) {
    utarget.set_version( version);          // set the SNMP version SNMPV1 or V2 or V3
    utarget.set_retry( retries);            // set the number of auto retries
    utarget.set_timeout( timeout);          // set timeout
    utarget.set_security_model( securityModel);
    utarget.set_security_name( securityName);
    pdu.set_security_level( securityLevel);
    pdu.set_context_name (contextName);
    pdu.set_context_engine_id(contextEngineID);
  }
  else {
#endif
    ctarget.set_version( version);          // set the SNMP version SNMPV1 or V2 or V3
    ctarget.set_retry( retries);            // set the number of auto retries
    ctarget.set_timeout( timeout);          // set timeout
    ctarget.set_readcommunity( community);  // set the read community to use
    ctarget.set_writecommunity( community);
#ifdef _SNMPv3
  }
#endif

  //-------[ issue the request, blocked mode ]-----------------------------
  cout << "(" << t << "): " 
       << "SNMP++ snmpWalk to " << address[t].get_printable() << " SNMPV" 
#ifdef _SNMPv3
       << ((version==version3) ? (version) : (version+1)) 
#else
       << (version+1) 
#endif
       << " Retries=" << retries
       << " Timeout=" << timeout <<"ms";
#ifdef _SNMPv3
  if (version == version3)
    cout << endl 
	 << "securityName= " << securityName.get_printable()
	 << ", securityLevel= " << securityLevel
	 << ", securityModel= " << securityModel << endl
	 << "contextName= " << contextName.get_printable()
	 << ", contextEngineID= " << contextEngineID.get_printable()
	 << endl;
  else
#endif
    cout << " Community=" << community.get_printable() << endl << flush;

  SnmpTarget *target;
#ifdef _SNMPv3
  if (version == version3)
    target = &utarget;
  else
#endif
    target = &ctarget;

  int status = 0;
  int requests = 0;
  int objects = 0;
  ssync.unlock();
  while (( status = snmp->get_bulk( pdu,*target,0,BULK_MAX))
	 == SNMP_CLASS_SUCCESS)
  {
    requests++;
    ssync.lock();
    for ( int z=0;z<pdu.get_vb_count(); z++) {
      pdu.get_vb( vb,z);
#ifdef _SNMPv3
      if (pdu.get_type() == REPORT_MSG) {
	Oid tmp;
	vb.get_oid(tmp);
	cout << "(" << t << "): " << "Received a reportPdu: "
	     << snmp->error_msg( tmp) 
	     << endl
	     << vb.get_printable_oid() << " = "
	     << vb.get_printable_value() << endl;
	ssync.unlock();
	return 0;
      }
#endif
      objects++;
      // look for var bind exception, applies to v2 only   
      if ( vb.get_syntax() != sNMP_SYNTAX_ENDOFMIBVIEW) {
	cout <<  "(" << t << "): " 
	     << vb.get_printable_oid() << " = ";
	cout << vb.get_printable_value() << "\n";
      }
      else {
	cout <<  "(" << t << "): " 
	     << "End of MIB Reached\n";
	cout <<  "(" << t << "): " 
//.........这里部分代码省略.........