repos_ecs/Service_1.0.0.5/Service/SnmpProcess.cpp

#include "stdafx.h"
#include "SnmpProcess.h"
#include "Global.h"
#include "struct.h"
#include "NoticeQueue.h"

HANDLE	g_SnmpRequestThread = NULL;
DWORD g_dwSnmpVariantTick = 0;
CRITICAL_SECTION g_csSnmpReadOneData;

int SnmpCommandSend();
int SnmpResponseValue();

BOOL LoadSnmpDll(CString strpath)
{
	g_hSnmpLibModule = NULL;
	CHAR strFile[MAX_LIST_LENGTH + 1] = "";
	wsprintf(strFile, "%s\\Dll\\Snmp.dll", strpath);

	InitializeCriticalSection( &g_csSnmpReadOneData );
	g_hSnmpLibModule = AfxLoadLibrary(strFile);

	if (NULL != g_hSnmpLibModule)
	{
		pSnmpDllGetValue = (SNMP_DLL_GetVale)::GetProcAddress(g_hSnmpLibModule, "SNMP_DLL_GetVale");
		pSnmpDllSetValue = (SNMP_DLL_SetValue)::GetProcAddress(g_hSnmpLibModule, "SNMP_DLL_SetValue");		
	}

	return TRUE;
}

void UnInitSnmpDll()
{
	DeleteCriticalSection( &g_csSnmpReadOneData );

	if( NULL != g_hSnmpLibModule )
	{
		AfxFreeLibrary( g_hSnmpLibModule );
		g_hSnmpLibModule = NULL;
	}
}

int ParseSnmpData(char *pDevUid, int nVarID, char *pMsg)
{
	int nDeviceIndex = -1, nVarIndex = -1;
	BOOL bFind = FindVar(pDevUid, nVarID, nDeviceIndex, nVarIndex);
	if( bFind == FALSE ) return -1;

	CDevice *pDev = g_pDevicesManager->m_Devices[nDeviceIndex];
	CBaseVar *pBaseVar = pDev->m_Vars[nVarIndex];

	EnterCriticalSection(&g_csSnmpReadOneData);
	pDev->m_dwOnlineTick = GetTickCount();
	LeaveCriticalSection(&g_csSnmpReadOneData);

	DWORD nValue = 0;
	double fCoef = pBaseVar->m_dbCoefficient;
	int nDataLen = pBaseVar->m_iDataLen;
	int nVarItemID = pBaseVar->m_nVarItemID;

	if( nVarItemID > 0 )//BIT位变量
	{
		int nStartBit = pBaseVar->m_nStartBit;
		int nEndBit = pBaseVar->m_nEndBit;
		int nStartReg, nEndReg;

		if( nEndBit - nStartBit < 7 )			// 一般告警状态会这样子定义，Snmp码暂时没有碰到，没有经过调试，待测试
		{
			if( nDataLen == 1 )
			{
				char chBuffer[8] = {0};
				memset(chBuffer, 0, sizeof(chBuffer));
				nValue = atoi(pMsg);
				itoa(nValue, chBuffer, 2);

				CString strTemp;
				switch( nEndBit - nStartBit )
				{
				case 0:
					strTemp.Format("%c", chBuffer[nStartBit]);
					break;
				case 1:
					strTemp.Format("%c%c", chBuffer[nStartBit], chBuffer[nStartBit + 1]);
					break;
				case 2:
					strTemp.Format("%c%c%c", chBuffer[nStartBit], chBuffer[nStartBit + 1], chBuffer[nStartBit + 2]);
					break;
				case 3:
					strTemp.Format("%c%c%c%c", chBuffer[nStartBit], chBuffer[nStartBit + 1], 
						chBuffer[nStartBit + 2], chBuffer[nStartBit +3]);
					break;
				case 4:
					strTemp.Format("%c%c%c%c%c", chBuffer[nStartBit], chBuffer[nStartBit + 1], 
						chBuffer[nStartBit + 2], chBuffer[nStartBit + 3], chBuffer[nStartBit + 4]);
					break;
				case 5:
					strTemp.Format("%c%c%c%c%c%c", chBuffer[nStartBit], chBuffer[nStartBit + 1], chBuffer[nStartBit + 2], 
						chBuffer[nStartBit + 3], chBuffer[nStartBit + 4], chBuffer[nStartBit + 5]);
					break;
				case 6:
					strTemp.Format("%c%c%c%c%c%c%c", chBuffer[nStartBit], chBuffer[nStartBit + 1], chBuffer[nStartBit + 2], 
						chBuffer[nStartBit + 3], chBuffer[nStartBit + 4], chBuffer[nStartBit + 5], chBuffer[nStartBit + 6]);
					break;
				default:
					LOG4C((LOG_NOTICE, "起始位与终止位不对",pDev->m_strDeviceName, pBaseVar->m_strDesc));
				}
				nValue = atoi(strTemp);
				//strTemp.Format("%d", 
			}
			else if( nDataLen == 2 )
			{
				char chBuffer[16] = {0};
				memset(chBuffer, 0, sizeof(chBuffer));
				nValue = atoi(pMsg);
				itoa(nValue, chBuffer, 2);

				CString strTemp;
				switch( nEndBit - nStartBit )
				{
				case 0:
					strTemp.Format("%c", chBuffer[nStartBit]);
					break;
				case 1:
					strTemp.Format("%c%c", chBuffer[nStartBit], chBuffer[nStartBit + 1]);
					break;
				case 2:
					strTemp.Format("%c%c%c", chBuffer[nStartBit], chBuffer[nStartBit + 1], chBuffer[nStartBit + 2]);
					break;
				case 3:
					strTemp.Format("%c%c%c%c", chBuffer[nStartBit], chBuffer[nStartBit + 1], 
						chBuffer[nStartBit + 2], chBuffer[nStartBit +3]);
					break;
				case 4:
					strTemp.Format("%c%c%c%c%c", chBuffer[nStartBit], chBuffer[nStartBit + 1], 
						chBuffer[nStartBit + 2], chBuffer[nStartBit + 3], chBuffer[nStartBit + 4]);
					break;
				case 5:
					strTemp.Format("%c%c%c%c%c%c", chBuffer[nStartBit], chBuffer[nStartBit + 1], chBuffer[nStartBit + 2], 
						chBuffer[nStartBit + 3], chBuffer[nStartBit + 4], chBuffer[nStartBit + 5]);
					break;
				case 6:
					strTemp.Format("%c%c%c%c%c%c%c", chBuffer[nStartBit], chBuffer[nStartBit + 1], chBuffer[nStartBit + 2], 
						chBuffer[nStartBit + 3], chBuffer[nStartBit + 4], chBuffer[nStartBit + 5], chBuffer[nStartBit + 6]);
					break;
				default:
					LOG4C((LOG_NOTICE, "起始位与终止位不对",pDev->m_strDeviceName, pBaseVar->m_strDesc));
				}
				nValue = atoi(strTemp);
			}

			
			//itoa(ntohs(g_vtMGEEquipData[nEquipIndex].MGEStatus.Status1), buffer, 16);
		}
		// 特殊变量处理（例如，一个命令返回两个变量的情况） 
		else if( nEndBit - nStartBit == 7 )		// 1个字节的情况
		{
			nStartReg = (int)nStartBit / 8;
			nEndReg = (int)(nEndBit + 1) / 8;

			nValue = (pMsg[nStartReg] << 4) | ( pMsg[nStartReg + 1] & 0x00FF );
		}
		else if( nEndBit - nStartBit == 15 )	// 2个字节的情况
		{
			nStartReg = (int)nStartBit / 8;
			nEndReg = (int)(nEndBit + 1) / 8;
			nValue = ( ( (pMsg[nStartReg] << 4) | ( pMsg[nStartReg + 1] & 0x00FF ) ) << 8 ) |
								( ( (pMsg[nStartReg + 2] << 4) | ( pMsg[nStartReg + 3] & 0x00FF ) ) & 0x0000FFFF );
		}

		EnterCriticalSection( &g_csSnmpReadOneData );
		pBaseVar->m_dbData = (double)(nValue * fCoef);
		if( pBaseVar->m_nRearm != 0 )
		{
			pBaseVar->m_dbData = pBaseVar->m_dbData + pBaseVar->m_nRearm;
		}
		LeaveCriticalSection( &g_csSnmpReadOneData );
		//TRACE2("变量ID%d, 值=%d\r\n", iVarID, nValue);
	}
	else
	{
		// 联合类型变量，SNMP协议不做特殊处理
		if( pBaseVar->m_nVarTypeID >= UNION_TYPE_MIN_ID && pBaseVar->m_nVarTypeID <= UNION_TYPE_MAX_ID )
		{

		}
		else if( pBaseVar->m_nVarTypeID == TIME_TYPE_ID )		// 时间类型（例如 01:30:10.00 ）
		{
			CString strTime = pMsg, strTmp;
			int nFindIndex = strTime.Find(":");
			int nHour = 0, nMinute = 0, nSecond = 0;
			if( nFindIndex != -1 )		// 读取小时
			{
				strTmp = strTime.Mid(0, nFindIndex);
				nHour = atoi(strTmp);
				strTime = strTime.Mid(nFindIndex + 1, strTime.GetLength() - nFindIndex);

				nFindIndex = strTime.Find(":");
				if( nFindIndex != -1 )		// 读取分钟
				{
					strTmp = strTime.Mid(0, nFindIndex);
					nMinute = atoi(strTmp);
					strTime = strTime.Mid(nFindIndex + 1, strTime.GetLength() - nFindIndex);
				}
			}

			nValue = nHour * 60 + nMinute;

			EnterCriticalSection( &g_csSnmpReadOneData );
			pBaseVar->m_dbData = (double)(nValue * fCoef);
			if( pBaseVar->m_nRearm != 0 )
			{
				pBaseVar->m_dbData = pBaseVar->m_dbData + pBaseVar->m_nRearm;
			}
			LeaveCriticalSection( &g_csSnmpReadOneData );
		}
		else if( SNMP_STRING_ID == pBaseVar->m_nVarTypeID )
		{
			CString strMsg = CString(pMsg);
			strMsg.MakeLower();
			if( 0 == strMsg.Compare("on") )
			{
				EnterCriticalSection( &g_csSnmpReadOneData );
				pBaseVar->m_dbData = 1;
				LeaveCriticalSection( &g_csSnmpReadOneData );
			}
			else if( 0 == strMsg.Compare("off") )
			{
				EnterCriticalSection( &g_csSnmpReadOneData );
				pBaseVar->m_dbData = 0;
				LeaveCriticalSection( &g_csSnmpReadOneData );
			}

			//LOG4C((LOG_NOTICE, "%s, value = %d", pBaseVar->m_strDesc, (int)pBaseVar->m_dbData));
		}
		else if( SNMP_NPM_TYPE == pBaseVar->m_nVarTypeID )
		{
			CString strTemp = CString(pMsg);
			//LOG4C((LOG_NOTICE, "value = %s", strTemp));
			strTemp = strTemp.Mid(51);
			strTemp.MakeLower();
			//LOG4C((LOG_NOTICE, "value = %s", strTemp));

			if( strTemp.Find("yes") != -1 )
			{
				EnterCriticalSection( &g_csSnmpReadOneData );
				pBaseVar->m_dbData = 1;
				LeaveCriticalSection( &g_csSnmpReadOneData );
			}
			else if( strTemp.Find("no") != -1 )
			{
				EnterCriticalSection( &g_csSnmpReadOneData );
				pBaseVar->m_dbData = 0;
				LeaveCriticalSection( &g_csSnmpReadOneData );
			}
			else
			{
				EnterCriticalSection( &g_csSnmpReadOneData );
				pBaseVar->m_dbData = atof(strTemp);
				LeaveCriticalSection( &g_csSnmpReadOneData );
			}

			CString strValue;
			strValue.Format("%.1f", pBaseVar->m_dbData);
			//LOG4C((LOG_NOTICE, "%s, value = %s", pBaseVar->m_strDesc, strValue));
		}
		else
		{
			EnterCriticalSection( &g_csSnmpReadOneData );
			pBaseVar->m_dbData = (double)(atof(pMsg) * fCoef);
			if( pBaseVar->m_nRearm != 0 )
			{
				pBaseVar->m_dbData = pBaseVar->m_dbData + pBaseVar->m_nRearm;
			}
			LeaveCriticalSection( &g_csSnmpReadOneData );
		}
	}
			
	EnterCriticalSection(&g_csSnmpReadOneData);
	pDev->m_dwOnlineTick = GetTickCount();
	LeaveCriticalSection(&g_csSnmpReadOneData);

	return 0;
}