代码： 全选
#include <stdio.h>
#include <pcap.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
int main(void)
{
char *net_dev;
char *ip_addr;
char *net_mask;
char errbuf[PCAP_ERRBUF_SIZE];
bpf_u_int32 netp;
bpf_u_int32 maskp;
struct in_addr addr;
net_dev=pcap_lookupdev(errbuf);
if(net_dev==NULL){
printf("cannot get the network device info: %s\n",errbuf);
return 1;
}
printf("the network device is: %s\n",net_dev);
if(pcap_lookupnet(net_dev,&netp,&maskp,errbuf)==-1){
printf("cannot get the network device ip info:%s\n",errbuf);
return 1;
}
addr.s_addr=netp;
ip_addr=inet_ntoa(addr);
if(ip_addr==NULL){
printf("convert network address fail\n");
return 1;
}
printf("ip address is : %s\n",ip_addr);
addr.s_addr=maskp;
net_mask=inet_ntoa(addr);
if(net_mask==NULL){
printf("convert network mask fail\n");
return 1;
}
printf("network mask is : %s\n",net_mask);
return 0;
}
运行结果如下：
cannot get the network device info: no suitable device found
高手能帮忙看一下什么问题吗？
