#include <snmp.h> #include <conio.h> #include <stdio.h>
typedef bool(WINAPI * pSnmpExtensionInit) ( IN DWORD dwTimeZeroReference, OUT HANDLE * hPollForTrapEvent, OUT AsnObjectIdentifier * supportedView);
typedef bool(WINAPI * pSnmpExtensionTrap) ( OUT AsnObjectIdentifier * enterprise, OUT AsnInteger * genericTrap, OUT AsnInteger * specificTrap, OUT AsnTimeticks * timeStamp, OUT RFC1157VarBindList * variableBindings);
typedef bool(WINAPI * pSnmpExtensionQuery) ( IN BYTE requestType, IN OUT RFC1157VarBindList * variableBindings, OUT AsnInteger * errorStatus, OUT AsnInteger * errorIndex);
typedef bool(WINAPI * pSnmpExtensionInitEx) ( OUT AsnObjectIdentifier * supportedView);
void main() { HINSTANCE m_hInst; pSnmpExtensionInit m_Init; pSnmpExtensionInitEx m_InitEx; pSnmpExtensionQuery m_Query; pSnmpExtensionTrap m_Trap; HANDLE PollForTrapEvent; AsnObjectIdentifier SupportedView; UINT OID_ifEntryType[] = {1, 3, 6, 1, 2, 1, 2, 2, 1, 3}; UINT OID_ifEntryNum[] = {1, 3, 6, 1, 2, 1, 2, 1}; UINT OID_ipMACEntAddr[] = {1, 3, 6, 1, 2, 1, 2, 2, 1, 6}; AsnObjectIdentifier MIB_ifMACEntAddr = { sizeof(OID_ipMACEntAddr) sizeof(UINT), OID_ipMACEntAddr }; AsnObjectIdentifier MIB_ifEntryType = {sizeof(OID_ifEntryType) sizeof(UINT), OID_ifEntryType}; AsnObjectIdentifier MIB_ifEntryNum = {sizeof(OID_ifEntryNum) sizeof(UINT), OID_ifEntryNum}; RFC1157VarBindList varBindList; RFC1157VarBind varBind[2]; AsnInteger errorStatus; AsnInteger errorIndex; AsnObjectIdentifier MIB_NULL = {0, 0}; int ret; int dtmp; int i = 0, j = 0; bool found = false; char TempEthernet[13]; m_Init = NULL; m_InitEx = NULL; m_Query = NULL; m_Trap = NULL;
/* 加载SNMP动态链接库并得到所需函数的地址 */ m_hInst = LoadLibrary("inetmib1.dll"); if (m_hInst < (HINSTANCE) HINSTANCE_ERROR) { m_hInst = NULL; return; } m_Init = (pSnmpExtensionInit) GetProcAddress(m_hInst, "SnmpExtensionInit"); m_InitEx = (pSnmpExtensionInitEx) GetProcAddress(m_hInst, "SnmpExtensionInitEx"); m_Query = (pSnmpExtensionQuery) GetProcAddress(m_hInst, "SnmpExtensionQuery"); m_Trap = (pSnmpExtensionTrap) GetProcAddress(m_hInst, "SnmpExtensionTrap"); m_Init(GetTickCount(), &PollForTrapEvent, &SupportedView);
/* 初始化m_Query将传回的变量列表 */ varBindList.list = varBind; varBind[0].name = MIB_NULL; varBind[1].name = MIB_NULL;
/* 拷贝OID以在接口表中查找到表目(适配器)数量 */ varBindList.len = 1; /* 仅处理一条记录 */ SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryNum); ret = m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus, &errorIndex); printf("# of adapters in this system : %in", varBind[0].value.asnValue.number); varBindList.len = 2;
/* 拷贝入OID接口类型ifType */ SNMP_oidcpy(&varBind[0].name, &MIB_ifEntryType);
/* 拷贝入OID地址ifPhysAddress */ SNMP_oidcpy(&varBind[1].name, &MIB_ifMACEntAddr);
do {
/* 提交查询。应答将被填入varBindList。 Submit the query. Responses will be loaded into varBindList. 我们可以认为后续调用的执行次数与系统所报告的适配器数目相同。 */ ret = m_Query(ASN_RFC1157_GETNEXTREQUEST, &varBindList, &errorStatus, &errorIndex); if (!ret) ret = 1; else /* 确认已经返回正确的类型 */ ret = SNMP_oidncmp(&varBind[0].name, &MIB_ifEntryType, MIB_ifEntryType.idLength); if (!ret) { j++; dtmp = varBind[0].value.asnValue.number; printf("Interface #%i type : %in", j, dtmp);
/* 类型6标识以太网接口 */ if (dtmp == 6) {
/* 这里确认我们有了一个地址 */ ret = SNMP_oidncmp(&varBind[1].name, &MIB_ifMACEntAddr, MIB_ifMACEntAddr.idLength); if ((!ret) && (varBind[1].value.asnValue.address.stream != NULL)) { if((varBind[1].value.asnValue.address.stream[0] == 0x44) && (varBind[1].value.asnValue.address.stream[1] == 0x45) && (varBind[1].value.asnValue.address.stream[2] == 0x53) && (varBind[1].value.asnValue.address.stream[3] == 0x54) && (varBind[1].value.asnValue.address.stream[4] == 0x00)) { /* 忽略所有的拨号网络适配器 */ printf("Interface #%i is a DUN adaptern", j); continue; } if ((varBind[1].value.asnValue.address.stream[0] == 0x00) && (varBind[1].value.asnValue.address.stream[1] == 0x00) && (varBind[1].value.asnValue.address.stream[2] == 0x00) && (varBind[1].value.asnValue.address.stream[3] == 0x00) && (varBind[1].value.asnValue.address.stream[4] == 0x00) && (varBind[1].value.asnValue.address.stream[5] == 0x00)) { /* 忽略其他网络接口返回的NULL地址 */ printf("Interface #%i is a NULL addressn", j); continue; } sprintf(TempEthernet, "%02x%02x%02x%02x%02x%02x", varBind[1].value.asnValue.address.stream[0], varBind[1].value.asnValue.address.stream[1], varBind[1].value.asnValue.address.stream[2], varBind[1].value.asnValue.address.stream[3], varBind[1].value.asnValue.address.stream[4], varBind[1].value.asnValue.address.stream[5]); printf("MAC Address of interface #%i: %sn", j, TempEthernet);} } } } while (!ret); /* 遇到错误时停止。当我们遍历完所有需被测试的接口后会产生一个错误。 */ getch();
FreeLibrary(m_hInst); /* 释放邦定 */ SNMP_FreeVarBind(&varBind[0]); SNMP_FreeVarBind(&varBind[1]); } |