http://www.cnblogs.com/Clingingboy/archive/2011/06/21/2086348.html
一.GetNetworkParams获取本地电脑的网络参数
获取一个FIXED_INFO的结构体
typedef struct {
char HostName[MAX_HOSTNAME_LEN + 4] ;
char DomainName[MAX_DOMAIN_NAME_LEN + 4];
PIP_ADDR_STRING CurrentDnsServer;
IP_ADDR_STRING DnsServerList;
UINT NodeType;
char ScopeId[MAX_SCOPE_ID_LEN + 4];
UINT EnableRouting;
UINT EnableProxy;
UINT EnableDns;
} FIXED_INFO_W2KSP1, *PFIXED_INFO_W2KSP1;
#if (NTDDI_VERSION >= NTDDI_WIN2KSP1)
typedef FIXED_INFO_W2KSP1 FIXED_INFO;
typedef FIXED_INFO_W2KSP1 *PFIXED_INFO;
#endif
二.网络接口管理
1.GetNumberOfInterfaces获取接口数量
DWORD GetNumberOfInterfaces(
__out PDWORD pdwNumIf
);
2.GetAdaptersInfo返回本地网络适配器列表
DWORD GetAdaptersInfo(
__out PIP_ADAPTER_INFO pAdapterInfo,
__inout PULONG pOutBufLen
);
int main()
{
PIP_INTERFACE_INFO pInfo =
(PIP_INTERFACE_INFO)::GlobalAlloc(GPTR, sizeof(IP_INTERFACE_INFO));
ULONG ulOutBufLen = sizeof(IP_INTERFACE_INFO);
// 如果上面申请的内存不够的话,再重新申请
if(::GetInterfaceInfo(pInfo, &ulOutBufLen) == ERROR_INSUFFICIENT_BUFFER)
{
::GlobalFree(pInfo);
pInfo = (PIP_INTERFACE_INFO)::GlobalAlloc(GPTR, ulOutBufLen);
}
// 再次调用GetInterfaceInfo来获取我们实际需要的数据
if(::GetInterfaceInfo(pInfo, &ulOutBufLen) == NO_ERROR)
{
printf(" \tAdapter Name: %ws\n", pInfo->Adapter[0].Name);
printf(" \tAdapter Index: %ld\n", pInfo->Adapter[0].Index);
printf(" \tNum Adapters: %ld\n", pInfo->NumAdapters);
}
else
{
printf(" GetInterfaceInfo() failed \n");
}
::GlobalFree(pInfo);
return 0;
}
三.IP地址管理
获取IP地址列表、添加和删除IP地址
GetIpAddrTable、AddIPAddress、DeleteIPAddress
int main()
{
// 首先调用GetIpAddrTable函数获取一个适配器
PMIB_IPADDRTABLE pIPAddrTable;
DWORD dwSize = 0;
pIPAddrTable = (PMIB_IPADDRTABLE)::GlobalAlloc(GPTR, sizeof(MIB_IPADDRTABLE));
// 获取所需的内存
if(::GetIpAddrTable(pIPAddrTable, &dwSize, FALSE) == ERROR_INSUFFICIENT_BUFFER)
{
::GlobalFree(pIPAddrTable);
pIPAddrTable = (PMIB_IPADDRTABLE)::GlobalAlloc(GPTR, dwSize);
}
// 再次调用GetIpAddrTable获取实际我们想要的数据
if(::GetIpAddrTable(pIPAddrTable, &dwSize, FALSE) == NO_ERROR)
{
// 打印出适配器信息
printf(" Address: %ld\n", pIPAddrTable->table[0].dwAddr);
printf(" Mask: %ld\n", pIPAddrTable->table[0].dwMask);
printf(" Index: %ld\n", pIPAddrTable->table[0].dwIndex);
printf(" BCast: %ld\n", pIPAddrTable->table[0].dwBCastAddr);
printf(" Reasm: %ld\n", pIPAddrTable->table[0].dwReasmSize);
}
else
{
printf(" GetIpAddrTable() failed \n");
}
::GlobalFree(pIPAddrTable);
// 我们将要添加的IP和mast
UINT iaIPAddress;
UINT imIPMask;
iaIPAddress = inet_addr("192.168.0.27");
imIPMask = inet_addr("255.255.255.0");
// 返回的句柄
ULONG NTEContext = 0;
ULONG NTEInstance = 0;
// 向第一个适配器添加IP地址
DWORD dwRet;
dwRet = ::AddIPAddress(iaIPAddress, imIPMask,
pIPAddrTable->table[0].dwIndex, &NTEContext, &NTEInstance);
if(dwRet == NO_ERROR)
{
printf(" IP address added.\n");
}
else
{
printf(" AddIPAddress failed. \n");
LPVOID lpMsgBuf;
// 调用失败,打印出为什么失败
if (::FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
dwRet,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL ))
{
printf(" Error: %s ", lpMsgBuf);
}
::LocalFree(lpMsgBuf);
}
// 删除上面在第一个适配器上添加的IP地址
dwRet = ::DeleteIPAddress(NTEContext);
if(dwRet == NO_ERROR)
{
printf(" IP Address Deleted.\n");
}
else
{
printf(" DeleteIPAddress failed.\n");
}
return 0;
}
四.获取网络状态信息
1.获取TCP和UDP连接表(GetTcpTable,GetUdpTable)
PMIB_UDPTABLE MyGetUdpTable(BOOL bOrder)
{
PMIB_UDPTABLE pUdpTable = NULL;
DWORD dwActualSize = 0;
// 查询所需缓冲区的大小
if(::GetUdpTable(pUdpTable, &dwActualSize, bOrder) == ERROR_INSUFFICIENT_BUFFER)
{
// 为MIB_UDPTABLE结构申请内存
pUdpTable = (PMIB_UDPTABLE)::GlobalAlloc(GPTR, dwActualSize);
// 获取UDP监听表
if(::GetUdpTable(pUdpTable, &dwActualSize, bOrder) == NO_ERROR)
return pUdpTable;
::GlobalFree(pUdpTable);
}
return NULL;
}
void MyFreeUdpTable(PMIB_UDPTABLE pUdpTable)
{
if(pUdpTable != NULL)
::GlobalFree(pUdpTable);
}
// 打印UDP监听表信息
PMIB_UDPTABLE pUdpTable = MyGetUdpTable(TRUE);
if(pUdpTable != NULL)
{
struct in_addr inadLocal;
printf("UDP TABLE\n");
printf("%20s %10s\n", "Loc Addr", "Loc Port");
for (UINT i = 0; i < pUdpTable->dwNumEntries; ++i)
{
inadLocal.s_addr = pUdpTable->table[i].dwLocalAddr;
// 打印出此入口的信息
printf("%20s %10u \n",
inet_ntoa(inadLocal), ntohs((unsigned short)(0x0000FFFF & pUdpTable->table[i].dwLocalPort)));
}
MyFreeUdpTable(pUdpTable);
}
五.获取相关统计数据
相关的函数GetxxxStatistics(GetIpStatistics,GetIcmpStatistics,GetTcpStatistics,GetUdpStatistics)
// 获取UDP统计数据
MIB_UDPSTATS UdpStats;
if(::GetUdpStatistics(&UdpStats) == NO_ERROR)
{
MIB_UDPSTATS *pStats = &UdpStats;
printf("\nUDP Statistics\n");
printf("\
dwInDatagrams = %lu\n\
dwNoPorts = %lu\n\
dwInErrors = %lu\n\
dwOutDatagrams = %lu\n\
dwNumAddrs = %lu\n",
pStats->dwInDatagrams,
pStats->dwNoPorts,
pStats->dwInErrors,
pStats->dwOutDatagrams,
pStats->dwNumAddrs);
}
六.路由表管理
1.GetIpForwardTable获取路由表
PMIB_IPFORWARDTABLE MyGetIpForwardTable(BOOL bOrder)
{
PMIB_IPFORWARDTABLE pIpRouteTab = NULL;
DWORD dwActualSize = 0;
// 查询所需缓冲区的大小
if(::GetIpForwardTable(pIpRouteTab, &dwActualSize, bOrder) == ERROR_INSUFFICIENT_BUFFER)
{
// 为MIB_IPFORWARDTABLE结构申请内存
pIpRouteTab = (PMIB_IPFORWARDTABLE)::GlobalAlloc(GPTR, dwActualSize);
// 获取路由表
if(::GetIpForwardTable(pIpRouteTab, &dwActualSize, bOrder) == NO_ERROR)
return pIpRouteTab;
::GlobalFree(pIpRouteTab);
}
return NULL;
}
void PrintIpForwardTable()
{
PMIB_IPFORWARDTABLE pIpRouteTable = MyGetIpForwardTable(TRUE);
if(pIpRouteTable != NULL)
{
DWORD i, dwCurrIndex;
struct in_addr inadDest;
struct in_addr inadMask;
struct in_addr inadGateway;
PMIB_IPADDRTABLE pIpAddrTable = NULL;
char szDestIp[128];
char szMaskIp[128];
char szGatewayIp[128];
printf("Active Routes:\n\n");
printf(" Network Address Netmask Gateway Address Interface Metric\n");
for (i = 0; i < pIpRouteTable->dwNumEntries; i++)
{
dwCurrIndex = pIpRouteTable->table[i].dwForwardIfIndex;
// 目的地址
inadDest.s_addr = pIpRouteTable->table[i].dwForwardDest;
// 子网掩码
inadMask.s_addr = pIpRouteTable->table[i].dwForwardMask;
// 网关地址
inadGateway.s_addr = pIpRouteTable->table[i].dwForwardNextHop;
strcpy(szDestIp, inet_ntoa(inadDest));
strcpy(szMaskIp, inet_ntoa(inadMask));
strcpy(szGatewayIp, inet_ntoa(inadGateway));
printf(" %15s %16s %16s %16d %7d\n",
szDestIp,
szMaskIp,
szGatewayIp,
pIpRouteTable->table[i].dwForwardIfIndex, // 可以在此调用GetIpAddrTable获取索引对应的IP地址
pIpRouteTable->table[i].dwForwardMetric1);
}
MyFreeIpForwardTable(pIpRouteTable);
}
}
2.添加、删除、修改路由
CreateIpForwardEntry、DeleteIpForwardEntry、SetIpForwardEntry
七.ARP表管理
1.获取IP地址到适配器的映射关系,即ARP表(GetIpNetTable)
BOOL InterfaceIdxToInterfaceIp(PMIB_IPADDRTABLE pIpAddrTable, DWORD dwIndex, char str[])
{
char* szIpAddr;
if(pIpAddrTable == NULL || str == NULL)
return FALSE;
str[0] = '\0';
// 遍历IP地址表,查找索引dwIndex对应的IP地址
for(DWORD dwIdx = 0; dwIdx < pIpAddrTable->dwNumEntries; dwIdx++)
{
if(dwIndex == pIpAddrTable->table[dwIdx].dwIndex)
{
// 以字符串的形式返回查询结果
szIpAddr = inet_ntoa(*((in_addr*)&pIpAddrTable->table[dwIdx].dwAddr));
if(szIpAddr)
{
strcpy(str, szIpAddr);
return TRUE;
}
else
return FALSE;
}
}
return FALSE;
}