如何取得自己的ip, mac....?!

linda0429wang

不曉得醬有沒有問題...
請多指教囉~

int GetIP(void)
{
        int sockfd;
        struct sockaddr_in *addr;
        struct ifreq if_info;
        char buff[INET_ADDRSTRLEN];
       
       
        //----ip
        sockfd =socket(AF_INET, SOCK_DGRAM, 0);
        strcpy(if_info.ifr_name, "eth0";
        ioctl(sockfd, SIOCGIFADDR, &if_info);
        addr = (struct sockaddr_in *)&if_info.ifr_addr;
        inet_ntop(AF_INET,&addr->;sin_addr,buff,sizeof(buff)) ;
        close(sockfd);
        printf("GetIP=%x=%s\n",addr->;sin_addr,buff);

       
       
        //----mac
        sockfd =socket(AF_INET, SOCK_DGRAM, 0);
        strcpy(if_info.ifr_name, "eth0";
        ioctl(sockfd, SIOCGIFHWADDR, &if_info);
        memcpy(buff, if_info.ifr_hwaddr.sa_data, 6);
        close(sockfd);
        printf("MAC=%02X,%02X,%02X,%02X,%02X,%02X\n",buff[0],buff[1],buff[2],buff[3],buff[4],buff[5]);
        printf("GetMac=%s\n",ether_ntoa((struct ether_addr *)buff));
               
               
       
        //----mask
        sockfd =socket(AF_INET, SOCK_DGRAM, 0);
        strcpy(if_info.ifr_name, "eth0";
        ioctl(sockfd, SIOCGIFNETMASK, &if_info);
        addr = (struct sockaddr_in *)&if_info.ifr_netmask;
        inet_ntop(AF_INET,&addr->;sin_addr,buff,sizeof(buff)) ;
        close(sockfd);
        printf("GetMask=%x=%s\n",addr->;sin_addr,buff);
       
       
        //----broadaddr
        sockfd =socket(AF_INET, SOCK_DGRAM, 0);
        strcpy(if_info.ifr_name, "eth0";
        ioctl(sockfd, SIOCGIFBRDADDR, &if_info);
        addr = (struct sockaddr_in *)&if_info.ifr_broadaddr;
        inet_ntop(AF_INET,&addr->;sin_addr,buff,sizeof(buff)) ;
        close(sockfd);
        printf("GetBcast=%x=%s\n",addr->;sin_addr,buff);


        return 0;
}

benlan

代码运行结果正常,建议下次贴代码时把头文件一起贴出,
还有一个问题,如果时双网卡等如下情况,有没别等方法,而不是把eth0:0传进去,或是自动得到ech0和eth0:0

1. [root@SrvWork root]# ifconfig
   
2. eth0      Link encap:Ethernet  HWaddr 00:05:5D:A5:2A:5A
   
3.           inet addr:192.168.1.50  Bcast:192.168.1.255  Mask:255.255.255.0
   
4.           UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
   
5.           RX packets:4162786 errors:0 dropped:0 overruns:0 frame:0
   
6.           TX packets:1113650 errors:0 dropped:0 overruns:0 carrier:0
   
7.           collisions:0 txqueuelen:100
   
8.           RX bytes:517011837 (493.0 Mb)  TX bytes:337028050 (321.4 Mb)
   
9.           Interrupt:11 Base address:0xc000
   
10. 
    
11. eth0:0    Link encap:Ethernet  HWaddr 00:05:5D:A5:2A:5A
    
12.           inet addr:10.0.0.50  Bcast:10.0.0.255  Mask:255.255.255.0
    
13.           UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
    
14.           RX packets:4162786 errors:0 dropped:0 overruns:0 frame:0
    
15.           TX packets:1113650 errors:0 dropped:0 overruns:0 carrier:0
    
16.           collisions:0 txqueuelen:100
    
17.           RX bytes:517011837 (493.0 Mb)  TX bytes:337028050 (321.4 Mb)
    
18.           Interrupt:11 Base address:0xc000
    
19. 
    
20. lo        Link encap:Local Loopback
    
21.           inet addr:127.0.0.1  Mask:255.0.0.0
    
22.           UP LOOPBACK RUNNING  MTU:16436  Metric:1
    
23.           RX packets:1540412 errors:0 dropped:0 overruns:0 frame:0
    
24.           TX packets:1540412 errors:0 dropped:0 overruns:0 carrier:0
    
25.           collisions:0 txqueuelen:0
    
26.           RX bytes:130355789 (124.3 Mb)  TX bytes:130355789 (124.3 Mb)
    
27. 
    
28. [root@SrvWork root]#
    

复制代码

linda0429wang

3Q very much~