用 WinPcap 获取网络接口列表

在 WinPcap SDK 中，有一个函数：pcap_findalldevs_ex，这个函数可以获得网络接口列表。

示例程序：

// SimpleSniffer.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include <pcap.h>int _tmain(){    pcap_if_t *alldevs = nullptr;    pcap_if_t *d = nullptr;    char errbuf[PCAP_ERRBUF_SIZE];    int count = 0;    // retrieve the adapters from the computer    if (pcap_findalldevs_ex(PCAP_SRC_IF_STRING, NULL /* auth is not needed */, &alldevs, errbuf) == -1)    {        _ftprintf(stderr, _T("Error in pcap_findalldevs_ex: %s\n"), errbuf);        exit(1);    }    // if there are no adapters, print an error    if (alldevs == nullptr)    {        _ftprintf(stderr, _T("\nNo adapters found! Make sure WinPcap is installed.\n"), errbuf);        exit(2);    }    // print the list of adapters along with basic information about an adapter    for (d = alldevs; d != NULL; d = d->next)    {        printf("%2d. %s\n", ++count, d->name);        if (d->description)        {            printf("    %s\n\n", d->description);        }        else        {            printf(" (No description available)\n");        }    }    if (count == 0)    {        _tprintf(_T("\nNo interfaces found! Make sure WinPcap is installed.\n"));    }    // free the network adapter list    pcap_freealldevs(alldevs);    return 0;}

运行结果：