獲取本地計算機的網絡信息
阿新 • • 發佈：2017-11-06
mixed comm windows 數據大小 一個 等待 ast 聲明 ffi
Windows網絡編程第六章探測網絡中的在線設備
實驗：獲取本地計算機的網絡信息
實驗分析：主要練習對GetAdaptersInfo()、GetNetworkParams()、GetInterfaceInfo()、GetIPAddrTable()等API函數的運用，實驗中需要註意的是需要兩次調用該函數，第一次返回本機要調查信息的數量，第二次調用顯示具體信息。
GetInfo.h
void pAdapter(); void Network(); void NumberOfInterfaces(); int GetIpAddr();
GetInfo.cpp
//********************聲明頭文件****************************
#include<iostream>
#include<WinSock2.h>
#include<IPHlpApi.h>
#include<stdio.h>
#pragma comment(lib,"ws2_32.lib")
using namespace std;
#pragma comment(lib,"IPHLPAPI.lib")
//****************一、獲取本地網絡適配器信息***************
void pAdapter()
{
//聲明變量
//指定獲取到的網絡信息結構體鏈表的指針
IP_ADAPTER_INFO *pAdapterInfo;
//保存獲取到的網絡信息結構體鏈表的長度
ULONG ulOutBufLen;
//返回調用編碼
DWORD dwRetVal;
//在輪循所有網絡適配器信息時使用的單個結構體變量
PIP_ADAPTER_INFO pAdapter;
//*******************獲取本地網絡適配器信息***************
//為pAdapterInfo分配空間
pAdapterInfo = (IP_ADAPTER_INFO *)malloc(sizeof(IP_ADAPTER_INFO));
ulOutBufLen = sizeof(IP_ADAPTER_INFO);
//第一次調用GetAdaptersInfo(),獲取返回結果的大小保存到ulOutBufLen中
if (GetAdaptersInfo(pAdapterInfo, &ulOutBufLen) != ERROR_SUCCESS)
{
free(pAdapterInfo);
pAdapterInfo = (IP_ADAPTER_INFO *)malloc(ulOutBufLen);
//pAdapterInfo = (IP_ADAPTER_INFO *)malloc(ulOutBufLen);
}
cout << pAdapterInfo->AddressLength;
//第二次調用GetAdaptersInfo()，獲取本地網絡信息保存到結構體pAdapterInfo中
//dwRetVal = GetAdaptersInfo(pAdapterInfo, &ulOutBufLen);
if ((dwRetVal=GetAdaptersInfo(pAdapterInfo, &ulOutBufLen)) != ERROR_SUCCESS)
{
cout << "GetAdaptersInfo Error!"<< dwRetVal << endl;
}
//***********************顯示本地網絡適配器信息******************
pAdapter = pAdapterInfo;
while (pAdapter)
{
cout << "網絡適配器名：" << pAdapter->AdapterName<<endl;
cout << "網絡適配器描述：" << pAdapter->Description << endl;
cout << "MAC地址： \t" ;
//處理MAC地址
for (int i = 0; i < pAdapter->AddressLength; i++)
{
if (i == (pAdapter->AddressLength - 1))
printf("%.2X\n", (int)pAdapter->Address[i]);
else
printf("%.2X-", (int)pAdapter->Address[i]);
}
cout << "IP地址：\t" << pAdapter->IpAddressList.IpAddress.String<<endl;
cout << "子網掩碼：\t" << pAdapter->IpAddressList.IpMask.String<<endl;
cout << "網關：\t" << pAdapter->GatewayList.IpAddress.String<<endl;
if (pAdapter->DhcpEnabled)
{
cout << "啟用DHCP：是"<<endl;
cout << "DHCP服務器：" << pAdapter->DhcpServer.IpAddress.String;
}
else
{
cout << "啟用DHCP：否" << endl;
}
cout << endl;
//處理下一個網絡適配器
pAdapter = pAdapter->Next;
}
//***************************釋放資源********************
if (pAdapterInfo)
free(pAdapterInfo);
//*************************暫停程序，等待用戶響應***************
printf("\n\n");
//system("pause");
}
//*********************二、獲取本地主機名、域名、DNS服務器信息****************
void Network()
{
//********************2.聲明變量****************************
//定義保存本地計算機網絡參數信息的結構體指針
FIXED_INFO * FixedInfo;
//保存獲取到的本地計算機網絡參數信息結構體鏈表的長度
ULONG ulOutBufLen;
//調用GetNetworkParams()返回值
DWORD dwRetVal;
//保存所有DNS服務器的IP地址列表
IP_ADDR_STRING* pIPAddr;
//******************3.獲取本地網絡參數信息***************************
//為FixedInfo結構體分配內存空間
FixedInfo = (FIXED_INFO*)GlobalAlloc(GPTR, sizeof(FIXED_INFO));
//初始化ulOutBuflen變量值
ulOutBufLen = sizeof(FIXED_INFO);
//第一次調用GetNetworkParams()函數，獲取返回數據的大小到ulOutBufLen中
if (ERROR_BUFFER_OVERFLOW == GetNetworkParams(FixedInfo, &ulOutBufLen)){
GlobalFree(FixedInfo);
FixedInfo = (FIXED_INFO*)GlobalAlloc(GPTR, ulOutBufLen);
}
//第2次調用GetNetworkParams()函數，以前面獲取的ulOutBufLen作為參數
if (dwRetVal = GetNetworkParams(FixedInfo, &ulOutBufLen) != ERROR_SUCCESS){
cout << "調用GetNetworkParams()函數失敗！返回值：" << dwRetVal << endl;
}
else
{
cout << "主機名：" << FixedInfo->HostName << endl;
cout << "域名：" << FixedInfo->DomainName << endl;
cout << "網絡信息：" << endl;
char* NodeType;
switch (FixedInfo->NodeType)
{
case BROADCAST_NODETYPE:
NodeType = "Broadcase Node";
break;
case PEER_TO_PEER_NODETYPE:
NodeType = "Peer to Peer Node";
break;
case MIXED_NODETYPE:
NodeType = "Mixed Node";
break;
case HYBRID_NODETYPE:
NodeType = "Hybrid Node";
break;
default:
NodeType = "Unknow Node";
break;
}
cout << "節點類型：" << FixedInfo->NodeType << NodeType << endl;
printf("是否啟用路由功能：%s\n", (FixedInfo->EnableRouting != 0) ? "是" : "否");
printf("是否啟用ARP代理功能：%s\n", (FixedInfo->EnableProxy != 0) ? "是" : "否");
printf("是否啟用DNS服務器：%s\n", (FixedInfo->EnableDns != 0) ? "是" : "否");
printf("\n服務器列表\n");
printf("%s\n", FixedInfo->DnsServerList.IpAddress.String);
pIPAddr = FixedInfo->DnsServerList.Next;
while (pIPAddr){
printf("\t%s\n", pIPAddr->IpAddress.String);
pIPAddr = pIPAddr->Next;
}
}
printf("\n");
}
//*********************獲取本地計算機網絡接口的基本信息************************
void NumberOfInterfaces()
{
//保存網絡接口信息的結構體指針
PIP_INTERFACE_INFO pInfo=NULL;
//保存獲取數據的長度
ULONG ulOutBufLen = 0;
//返回結果
DWORD dwRetVal=0;
int iReturn = 0;
//第一次調用GetInterfaceInfo,獲取數據大小，保存到ulOutBufLen變量中
dwRetVal = GetInterfaceInfo(NULL, &ulOutBufLen);
if (dwRetVal == ERROR_INSUFFICIENT_BUFFER){
pInfo = (IP_INTERFACE_INFO *)malloc(ulOutBufLen);
if (pInfo == NULL){
printf("無法分配GetInterfaceInfo函數需要的內存空間。\n");
}
}
//第二次調用GetInterfaceInfo，獲取需要的實際數據
dwRetVal = GetInterfaceInfo(pInfo, &ulOutBufLen);
if (dwRetVal == NO_ERROR){
printf("網絡適配器數量：%ld\n\n", pInfo->NumAdapters);
for (int i = 0; i < (int)pInfo->NumAdapters; i++)
{
printf("網絡適配器索引[%d]:%ld\n", i,pInfo->Adapter[i].Index);
printf("網絡適配器名稱[%d]:%ws\n\n", i, pInfo->Adapter[i].Name);//?
}
iReturn = 0;
}
else if (dwRetVal == ERROR_NO_DATA)
{
printf("本地計算機上沒有支持IPV4的網絡適配器。\n");
iReturn = 1;
}
else{
printf("GetInterfaceInfo調用失敗：%d\n", dwRetVal);
}
//釋放內存空間
free(pInfo);
}
//*****************獲取本地計算機IP地址表**********************
//分配內存空間
#define MALLOC(x) HeapAlloc(GetProcessHeap(),0,(x))
//釋放內存空間
#define FREE(x) HeapFree(GetProcessHeap(),0,(x))
int GetIpAddr()
{
//網絡接口與IP地址映射表
PMIB_IPADDRTABLE pIPAddrTable;
//獲取數據的大小
DWORD dwSize = 0;
//調用GetIPAddrTable()函數的返回值
DWORD dwRetval = 0;
//保存IP地址的結構體
IN_ADDR IPAddr;
//用於獲取錯誤信息
LPVOID lpMsgBuf;
//IN_ADDR的定義如下：
typedef struct in_addr IN_ADDR;
//分配內存空間
pIPAddrTable = (MIB_IPADDRTABLE *)MALLOC(sizeof(MIB_IPADDRTABLE));
//第一次調用GetIPAddrTable()函數，獲取數據的大小到dwSize
if (pIPAddrTable)
{
if (GetIpAddrTable(pIPAddrTable, &dwSize, 0) == ERROR_INSUFFICIENT_BUFFER){
FREE(pIPAddrTable);
pIPAddrTable = (MIB_IPADDRTABLE *)MALLOC(dwSize);
}
if (pIPAddrTable == NULL)
{
printf("GetIpAddrTable()函數內存分配失敗\n");
exit(1);
}
}
//第2次調用GetIPAddrTable()函數，獲取實際數據
if ((dwRetval = GetIpAddrTable(pIPAddrTable, &dwSize, 0)) != NO_ERROR){
printf("GetIpAddrTable()調用失敗：%d\n", dwRetval);
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, dwRetval, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&lpMsgBuf, 0, NULL))
{
printf("\t錯誤信息：%s", lpMsgBuf);
LocalFree(lpMsgBuf);
}
exit(1);
}
//顯示獲取到的IP地址信息
printf("\t記錄數量：%ld\n", pIPAddrTable->dwNumEntries);
for (int i = 0; i < (int)pIPAddrTable->dwNumEntries; i++)
{
printf("\n\t接口序號[%d]:\t%ld\n", i, pIPAddrTable->table[i].dwIndex);
IPAddr.S_un.S_addr = (u_long)pIPAddrTable->table[i].dwAddr;
printf("\tIP地址[%d]: \t%s\n", i, inet_ntoa(IPAddr));
IPAddr.S_un.S_addr = (u_long)pIPAddrTable->table[i].dwMask;
printf("\t子網掩碼[%d]: \t%s\n", i, inet_ntoa(IPAddr));
IPAddr.S_un.S_addr = (u_long)pIPAddrTable->table[i].dwBCastAddr;
printf("\t廣播地址[%d]:\t%s(%ld%)\n", i, inet_ntoa(IPAddr), pIPAddrTable->table[i].dwBCastAddr);
printf("\t重組報文最大數量[%d]:\t %ld\n", i, pIPAddrTable->table[i].dwReasmSize);
printf("\t類型和狀態：[%d]:", i);
if (pIPAddrTable->table[i].wType & MIB_IPADDR_PRIMARY)
printf("\t主IP地址");
if (pIPAddrTable->table[i].wType & MIB_IPADDR_DYNAMIC)
printf("\t動態IP地址");
if (pIPAddrTable->table[i].wType & MIB_IPADDR_DISCONNECTED)
printf("\t斷開連接的接口對應的IP地址");
if (pIPAddrTable->table[i].wType & MIB_IPADDR_DELETED)
printf("\t刪除的IP地址");
if (pIPAddrTable->table[i].wType & MIB_IPADDR_TRANSIENT)
printf("\t臨時地址");
printf("\n");
}
//釋放內存空間
if (pIPAddrTable){
FREE(pIPAddrTable);
pIPAddrTable = NULL;
}
return 0;
}
GetNetworkParams.cpp
//********************1.聲明頭文件****************************
#include<iostream>
#include<string>
//#include"stdafx.h"
#include"GetInfo.h"
#include<WinSock2.h>
#include<IPHlpApi.h>
#include<stdio.h>
#pragma comment(lib,"IPHLPAPI.lib")
using namespace std;
int main()
{
while (true)
{
cout << "請選擇您要進行的操作：" << endl;
cout << "1.獲取本地網絡適配器信息" << endl;
cout << "2.獲取本地主機名、域名、DNS服務器信息" << endl;
cout << "3.獲取本地計算機網絡接口的基本信息" << endl;
cout << "4.獲取本地計算機IP地址表" << endl;
cout << "其他鍵退出" << endl;
string select = "";
cin >> select;
if (select == "1")
{
pAdapter();//獲取本地網絡適配器信息
}
else if (select == "2")
{
Network();//獲取本地主機名、域名、DNS服務器信息
}
else if (select == "3")
{
NumberOfInterfaces();//獲取本地計算機網絡接口的基本信息
}
else if (select == "4")
GetIpAddr();//獲取本地計算機IP地址表
else
{
cout << "已退出" << endl;
break;
}
}
return 0;
}
獲取本地計算機的網絡信息