📄 snmp探测代码.txt
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status = SnmpSetRetry(pSendInfo->hManagerEntity, pSendInfo->dwRetransmitCont);
if(status == SNMPAPI_FAILURE)
{
lMsg("设置管理者重试次数SnmpSetRetry时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//设置管理者超时时间
status = SnmpSetTimeout(pSendInfo->hManagerEntity, pSendInfo->dwTimeOut);
if(status == SNMPAPI_FAILURE)
{
lMsg("设置管理者超时时间SnmpSetTimeout时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//设置代理重试次数
status = SnmpSetRetry(pSendInfo->hAgentEntity, pSendInfo->dwRetransmitCont);
if(status == SNMPAPI_FAILURE)
{
lMsg("设置代理重试次数SnmpSetRetry时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//设置代理超时时间
status = SnmpSetTimeout(pSendInfo->hAgentEntity, pSendInfo->dwTimeOut);
if(status == SNMPAPI_FAILURE)
{
lMsg("设置代理超时时间SnmpSetTimeout时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//设置重发模式
status = SnmpSetRetransmitMode(SNMPAPI_ON);
//------------------------------------------
//如果已经包含了PDU，则直接发送
if(pSendInfo->hPdu != NULL)
{
// 发送SNMP消息
status = SnmpSendMsg(hSnmpSession, pSendInfo->hManagerEntity,
pSendInfo->hAgentEntity, pSendInfo->hViewContext, pSendInfo->hPdu);
if(status == SNMPAPI_FAILURE)
{
lMsg("发送SNMP消息SnmpSendMsg时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
}
else
if(pSendInfo->hVbl != NULL) //如果没有包含PDU句柄，但是有VBL句柄，则做相应的处理
{ //再发送
HSNMP_PDU hTempPdu = NULL;
DWORD dwRequestId = 0;
//每发一个新的消息时请求ID应该加一
if(pSendInfo->nPduType != SNMP_PDU_RESPONSE)
{
*pRequestId = *pRequestId + 1;
}
// 创建一个PDU
hTempPdu = SnmpCreatePdu(hSnmpSession, pSendInfo->nPduType, *pRequestId,
pSendInfo->nErrorStatus, pSendInfo->nErrorIndex,
pSendInfo->hVbl);
if(hTempPdu == SNMPAPI_FAILURE)
{
lMsg("创建一个PDU SnmpCreatePdu时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
// 发送SNMP消息
status = SnmpSendMsg(hSnmpSession, pSendInfo->hManagerEntity,
pSendInfo->hAgentEntity, pSendInfo->hViewContext, hTempPdu);
if(status == SNMPAPI_FAILURE)
{
lMsg("发送SNMP消息SnmpSendMsg时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//释放资源
SnmpFreePdu(hTempPdu);
}
else //如果PDU和VBL的句柄都为NULL，则用vblValue中的信息来发送信息
{
if(!pSendInfo->nVblCount)
{
lMsg("没有变量可以被绑定");
return SNMPAPI_FAILURE;
}
HSNMP_VBL hTempVbl = NULL;
HSNMP_PDU hTempPdu = NULL;
//------------------------------------
//绑定数据列表
hTempVbl = SnmpCreateVbl(hSnmpSession, NULL, NULL);
if(hTempVbl == SNMPAPI_FAILURE)
{
lMsg("绑定数据列表SnmpCreateVbl时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//!!!!!!!!注意!!!!!!!!!!!//
//使用SnmpSetVb函数做插入操作时要将Index项设置为0!!
for(int i = 0; i < pSendInfo->nVblCount; i++)
{
SnmpSetVb(hTempVbl, 0, &pSendInfo->vblOid[i], &pSendInfo->vblValue[i]);
}
///////////////////////////////////////////////
//每发一个新的消息时请求ID应该加一
if(pSendInfo->nPduType != SNMP_PDU_RESPONSE)
{
*pRequestId = *pRequestId + 1;
}
// 创建一个PDU
hTempPdu = SnmpCreatePdu(hSnmpSession, pSendInfo->nPduType, *pRequestId,
pSendInfo->nErrorStatus, pSendInfo->nErrorIndex, hTempVbl);
if(hTempPdu == SNMPAPI_FAILURE)
{
lMsg("创建一个PDU SnmpCreatePdu时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
// 发送SNMP消息
status = SnmpSendMsg(hSnmpSession, pSendInfo->hManagerEntity,
pSendInfo->hAgentEntity,
pSendInfo->hViewContext, hTempPdu);
if(status == SNMPAPI_FAILURE)
{
lMsg("发送SNMP消息SnmpSendMsg时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//释放资源
SnmpFreeVbl(hTempVbl);
SnmpFreePdu(hTempPdu);
}
//================================================
return SNMPAPI_SUCCESS;
}
//----------------------------------
//名称：SendSnmpMessage
//描述：简单的发送Snmp包
//----------------------------------
SNMPAPI_STATUS SendSnmpMessage(HSNMP_SESSION hSnmpSession, CString strManagerIp,
CString strAgentIp, CString strCommunity, CString strOidNumber[MAX_VBL],
DWORD dwRetransmitCont, DWORD dwTimeOut, DWORD * pRequestId,
int nPduType, smiVALUE value[MAX_VBL], int nValueCount, int nErrorStatus,
int nErrorIndex)
{
HSNMP_VBL hVbl = NULL;
HSNMP_PDU hPdu = NULL;
HSNMP_ENTITY hAgentEntity = NULL;
HSNMP_ENTITY hManagerEntity = NULL;
HSNMP_CONTEXT hViewContext = NULL;
smiOCTETS smiCommunity;
smiOID oid;
SNMPAPI_STATUS status;
// Set community
smiCommunity.len = strCommunity.GetLength();
smiCommunity.ptr = (smiLPBYTE) strCommunity.GetBuffer(strCommunity.GetLength());
//得到管理实体句柄信息strAgentIp
hManagerEntity = SnmpStrToEntity(hSnmpSession, strManagerIp);
if(hManagerEntity == SNMPAPI_FAILURE)
{
lMsg("得到管理实体句柄信息SnmpStrToEntity时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
hAgentEntity = SnmpStrToEntity(hSnmpSession, strAgentIp);
if(hAgentEntity == SNMPAPI_FAILURE)
{
lMsg("得到代理实体句柄信息SnmpStrToEntity时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//得到SNMP设备上下文信息句柄，管理者可以用它作为snmpSendMsg和snmpRegister的参数
hViewContext = SnmpStrToContext(hSnmpSession, &smiCommunity);
if(hViewContext == SNMPAPI_FAILURE)
{
lMsg("SNMP设备上下文信息句柄SnmpStrToContext时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//--------------------------------------------------------------------------------
//设置管理者重试次数
status = SnmpSetRetry(hManagerEntity, dwRetransmitCont);
if(status == SNMPAPI_FAILURE)
{
lMsg("设置管理者重试次数SnmpSetRetry时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//设置管理者超时时间
status = SnmpSetTimeout(hManagerEntity, dwTimeOut);
if(status == SNMPAPI_FAILURE)
{
lMsg("设置管理者超时时间SnmpSetTimeout时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//设置代理重试次数
status = SnmpSetRetry(hAgentEntity, dwRetransmitCont);
if(status == SNMPAPI_FAILURE)
{
lMsg("设置代理重试次数SnmpSetRetry时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//设置代理超时时间
status = SnmpSetTimeout(hAgentEntity, dwTimeOut);
if(status == SNMPAPI_FAILURE)
{
lMsg("设置代理超时时间SnmpSetTimeout时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//设置重发模式
status = SnmpSetRetransmitMode(SNMPAPI_ON);
//---------------------------------------------------------------------------------
//绑定数据列表
hVbl = SnmpCreateVbl(hSnmpSession, NULL, NULL);
if(hVbl == SNMPAPI_FAILURE)
{
lMsg("绑定数据列表SnmpCreateVbl时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//!!!!!!!!注意!!!!!!!!!!!//
//使用SnmpSetVb函数做插入操作时要将Index项设置为0!!
// SnmpSetVb(hVbl, 0, &oid, &value);
if(nValueCount != 1)
{
for(int i = 0; i < nValueCount; i++)
{
oid.len = 0;
SnmpStrToOid(strOidNumber[i], &oid);
SnmpSetVb(hVbl, 0, &oid, &value[i]);
SnmpFreeDescriptor(SNMP_SYNTAX_OID, (smiLPOPAQUE)&oid);
}
}
///////////////////////////////////////////////
//每发一个新的消息时请求ID应该加一
*pRequestId = *pRequestId + 1;
// 创建一个PDU
hPdu = SnmpCreatePdu(hSnmpSession, nPduType, *pRequestId, nErrorStatus, nErrorIndex
, hVbl);
if(hPdu == SNMPAPI_FAILURE)
{
lMsg("创建一个PDU SnmpCreatePdu时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
// 发送SNMP消息
status = SnmpSendMsg(hSnmpSession, hManagerEntity, hAgentEntity, hViewContext, hPdu);
if(status == SNMPAPI_FAILURE)
{
lMsg("发送SNMP消息SnmpSendMsg时错误！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
// 释放资源
SnmpFreeVbl(hVbl);
SnmpFreePdu(hPdu);
SnmpFreeEntity(hAgentEntity);
SnmpFreeEntity(hManagerEntity);
SnmpFreeContext(hViewContext);
return SNMPAPI_SUCCESS;
}
//----------------------------------
//名称：GetTrapMessage
//描述：得到TRAP包中的信息
//----------------------------------
SNMPAPI_STATUS GetTrapMessage(HSNMP_SESSION hSnmpSession, CTrapPduInfo *pTpiStore)
{
ZeroMemory(pTpiStore, sizeof(CTrapPduInfo));
SNMPAPI_STATUS s;
char szTemp[MAXOBJIDSTRSIZE];
smiOCTETS oct;
CString strHead = "1.3.6.1.6.3.1.1.5.";
//
s = SnmpRecvMsg(hSnmpSession, &pTpiStore->hRcvAgentEntity, &pTpiStore->hRcvManagerEntity,
&pTpiStore->hRcvViewContext, &pTpiStore->hRcvPdu);
if(s == SNMPAPI_FAILURE)
{
lMsg("Trap: SnmpRecvMsg时出错！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//得到发送消息代理的IP
SnmpEntityToStr(pTpiStore->hRcvAgentEntity, 40, pTpiStore->szSourceIp);
//得到共用体名称
::SnmpContextToStr(pTpiStore->hRcvViewContext, &oct);
strcpy(pTpiStore->szCommunity, (const char *)oct.ptr);
pTpiStore->szCommunity[oct.len] = 0;
//----------------------------------------------------------------//得到PDU
s = SnmpGetPduData(pTpiStore->hRcvPdu, &pTpiStore->nPduType, &pTpiStore->nRequestId,
&pTpiStore->nErrorStatus, &pTpiStore->nErrorIndex, &pTpiStore->hRcvVbl);
if(s == SNMPAPI_FAILURE)
{
lMsg("Trap: SnmpGetPduData时出错！！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//得到此PDU中包含的VBlist数量
pTpiStore->nVblCount = SnmpCountVbl(pTpiStore->hRcvVbl);
for (int i = 1; i <= pTpiStore->nVblCount; i++)
{
//!!!!!!!!!!注意!!!!!!!!!!!!!!!//
//SnmpGetVb中的index是从1开始！
s = SnmpGetVb(pTpiStore->hRcvVbl, i, &pTpiStore->vblOid[i - 1],
&pTpiStore->vblValue[i - 1]);
if(s == SNMPAPI_FAILURE)
{
lMsg("Trap: SnmpGetVb时出错！！");
GetSnmpErrorDescribe(hSnmpSession);
return SNMPAPI_FAILURE;
}
//---------------------------------解出TRAP中的信息
switch(pTpiStore->vblValue[i - 1].syntax)
{
case SNMP_SYNTAX_TIMETICKS :
pTpiStore->dwTimeTicks = pTpiStore->vblValue[i - 1].value.uNumber;
break;
case SNMP_SYNTAX_OID :
//得到陷阱信息！
memset(szTemp, 0, MAXOBJIDSTRSIZE);
::SnmpOidToStr(&pTpiStore->vblValue[i - 1].value.oid, MAXOBJIDSTRSIZE, szTemp);
if(i == 2)
{
int nTempArray[40];
memset(nTempArray, 0, 80);
char *pTemp = NULL, *pSource = szTemp;
//-----------------------------提取其中的数字
for(int j = 0; j < 40; j++)
{
nTempArray[j] = strtoul(pSource,
&pTemp, 10);
if(pTemp == pSource)
break;
pSource = pTemp + 1;
}
if(nTempArray[j - 2] == 0)
{
pTpiStore->genericTrap = 6;
pTpiStore->specificTrap = nTempArray[j - 1];
}
else
pTpiStore->genericTrap = nTempArray[j - 1] - 1;
}
if(i == pTpiStore->nVblCount)
{
//得到企业OID
strcpy(pTpiStore->szEnterpriseOid, szTemp);
}
break;
//------------------------------------
default:
break;
}
pTpiStore->nUsefulVbCount = pTpiStore->nVblCount - 3;
}
//!!!注意：释放资源!!!!
SnmpFreeDescriptor(SNMP_SYNTAX_OCTETS, &oct);
return SNMPAPI_SUCCESS;
}
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