WinPcap获取网卡的更多信息

// pcap_findalldevs_ex2.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"

#define WINVER 0x0501

#define HAVE_REMOTE
#include <pcap.h>
#include <ws2tcpip.h>

#pragma comment(lib,"wpcap.lib")
#pragma comment(lib,"ws2_32.lib")

// 函数原型
void ifprint(pcap_if_t *d);
char *iptos(u_long in);
char* ip6tos(struct sockaddr *sockaddr, char *address, int addrlen);

int _tmain(int argc, _TCHAR* argv[])
{
pcap_if_t *alldevs;
pcap_if_t *d;
char errbuf[PCAP_ERRBUF_SIZE+1];
char source[PCAP_ERRBUF_SIZE+1];

printf("Enter the device you want to list:\n"
"rpcap://              ==> lists interfaces in the local machine\n"
"rpcap://hostname:port ==> lists interfaces in a remote machine\n"
"                          (rpcapd daemon must be up and running\n"
"                           and it must accept 'null' authentication)\n"
"file://foldername     ==> lists all pcap files in the give folder\n\n"
"Enter your choice: ");

fgets(source, PCAP_ERRBUF_SIZE, stdin);
source[PCAP_ERRBUF_SIZE] = '\0';

/* 获得接口列表 */
if (pcap_findalldevs_ex(source, NULL, &alldevs, errbuf) == -1)
{
fprintf(stderr,"Error in pcap_findalldevs: %s\n",errbuf);
exit(1);
}

/* 扫描列表并打印每一项 */
for(d=alldevs;d;d=d->next)
{
ifprint(d);
}

pcap_freealldevs(alldevs);

getchar();

return 1;
}

/* 打印所有可用信息 */
void ifprint(pcap_if_t *d)
{
pcap_addr_t *a;
char ip6str[128];

/* 设备名(Name) */
printf("%s\n",d->name);

/* 设备描述(Description) */
if (d->description)
printf("\tDescription: %s\n",d->description);

/* Loopback Address*/
printf("\tLoopback: %s\n",(d->flags & PCAP_IF_LOOPBACK)?"yes":"no");

/* IP addresses */
for(a=d->addresses;a;a=a->next) {
printf("\tAddress Family: #%d\n",a->addr->sa_family);

switch(a->addr->sa_family)
{
case AF_INET:
printf("\tAddress Family Name: AF_INET\n");
if (a->addr)
printf("\tAddress: %s\n",iptos(((struct sockaddr_in *)a->addr)->sin_addr.s_addr));
if (a->netmask)
printf("\tNetmask: %s\n",iptos(((struct sockaddr_in *)a->netmask)->sin_addr.s_addr));
if (a->broadaddr)
printf("\tBroadcast Address: %s\n",iptos(((struct sockaddr_in *)a->broadaddr)->sin_addr.s_addr));
if (a->dstaddr)
printf("\tDestination Address: %s\n",iptos(((struct sockaddr_in *)a->dstaddr)->sin_addr.s_addr));
break;

case AF_INET6:
printf("\tAddress Family Name: AF_INET6\n");
if (a->addr)
printf("\tAddress: %s\n", ip6tos(a->addr, ip6str, sizeof(ip6str)));
break;

default:
printf("\tAddress Family Name: Unknown\n");
break;
}
}
printf("\n");
}

/* 将数字类型的IP地址转换成字符串类型的 */
#define IPTOSBUFFERS    12
char *iptos(u_long in)
{
static char output[IPTOSBUFFERS][3*4+3+1];
static short which;
u_char *p;

p = (u_char *)∈
which = (which + 1 == IPTOSBUFFERS ? 0 : which + 1);
sprintf(output[which], "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
return output[which];
}

char* ip6tos(struct sockaddr *sockaddr, char *address, int addrlen)
{
socklen_t sockaddrlen;

#ifdef WIN32
sockaddrlen = sizeof(struct sockaddr_in6);
#else
sockaddrlen = sizeof(struct sockaddr_storage);
#endif

if(getnameinfo(sockaddr,
sockaddrlen,
address,
addrlen,
NULL,
0,
NI_NUMERICHOST) != 0) address = NULL;

return address;
}