152 lines
5.1 KiB
C
152 lines
5.1 KiB
C
#include <arpa/inet.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <netinet/in.h>
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#include <stdio.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <netinet/ether.h>
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#include "get_interface.h"
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int interface_num=0;//接口数量
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INTERFACE net_interface[MAXINTERFACES];//接口数据
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/******************************************************************
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函 数: int get_interface_num()
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功 能: 获取接口数量
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参 数: 无
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*******************************************************************/
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int get_interface_num(){
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return interface_num;
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}
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/******************************************************************
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函 数: int getinterface()
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功 能: 获取接口信息
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参 数: 无
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*******************************************************************/
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void getinterface()
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{
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struct ifreq buf[MAXINTERFACES]; /* ifreq结构数组 */
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struct ifconf ifc; /* ifconf结构 */
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int sock_raw_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
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/* 初始化ifconf结构 */
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ifc.ifc_len = sizeof(buf);
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ifc.ifc_buf = (caddr_t) buf;
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/* 获得接口列表，所有接口的清单 */
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if (ioctl(sock_raw_fd, SIOCGIFCONF, (char *) &ifc) == -1){
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perror("SIOCGIFCONF ioctl");
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return ;
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}
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interface_num = ifc.ifc_len / sizeof(struct ifreq); /* 接口数量 */
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printf("interface_num=%d\n\n", interface_num);
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char buff[20]="";
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int ip;
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int if_len = interface_num;
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while (if_len-- > 0)
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{ /* 遍历每个接口 */
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printf("%s\n", buf[if_len].ifr_name); /* 接口名称 */
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sprintf(net_interface[if_len].name, "%s", buf[if_len].ifr_name); /* 接口名称 */
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printf("-%d-%s--\n",if_len,net_interface[if_len].name);
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/* 获得接口标志、flags值 */
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if (!(ioctl(sock_raw_fd, SIOCGIFFLAGS, (char *) &buf[if_len])))
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{
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/* 接口状态 */
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/*IFF_UP ：网络装置是否正常启用，不会因插拔网络线而有任何变化*/
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if (buf[if_len].ifr_flags & IFF_UP){
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printf("UP\n");
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net_interface[if_len].flag = 1;
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}
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else{
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printf("DOWN\n");
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net_interface[if_len].flag = 0;
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}
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}
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else
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{
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char str[256];
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sprintf(str, "SIOCGIFFLAGS ioctl %s", buf[if_len].ifr_name);
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perror(str);
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}
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/* IP地址 */
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if (!(ioctl(sock_raw_fd, SIOCGIFADDR, (char *) &buf[if_len])))
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{
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/*inet_ntoa将一个网络字节序的IP地址（也就是结构体in_addr类型变量）
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转化为点分十进制的IP地址（字符串）*/
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printf("IP:%s\n",(char*)inet_ntoa(((struct sockaddr_in*) (&buf[if_len].ifr_addr))->sin_addr));
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bzero(buff,sizeof(buff));
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sprintf(buff, "%s", (char*)inet_ntoa(((struct sockaddr_in*) (&buf[if_len].ifr_addr))->sin_addr));
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/*新型网路地址转化函数inet_pton：
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将点分十进制的ip地址转化为用于网络传输的数值格式*/
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inet_pton(AF_INET, buff, &ip);
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memcpy(net_interface[if_len].ip, &ip, 4);
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}
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else
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{
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char str[256];
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sprintf(str, "SIOCGIFADDR ioctl %s", buf[if_len].ifr_name);
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perror(str);
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}
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/* 子网掩码 */
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if (!(ioctl(sock_raw_fd, SIOCGIFNETMASK, (char *) &buf[if_len])))
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{
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printf("netmask:%s\n",(char*)inet_ntoa(((struct sockaddr_in*) (&buf[if_len].ifr_addr))->sin_addr));
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bzero(buff,sizeof(buff));
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sprintf(buff, "%s", (char*)inet_ntoa(((struct sockaddr_in*) (&buf[if_len].ifr_addr))->sin_addr));
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inet_pton(AF_INET, buff, &ip);
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memcpy(net_interface[if_len].netmask, &ip, 4);
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}
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else
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{
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char str[256];
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sprintf(str, "SIOCGIFADDR ioctl %s", buf[if_len].ifr_name);
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perror(str);
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}
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/* 广播地址 */
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if (!(ioctl(sock_raw_fd, SIOCGIFBRDADDR, (char *) &buf[if_len])))
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{
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printf("br_ip:%s\n",(char*)inet_ntoa(((struct sockaddr_in*) (&buf[if_len].ifr_addr))->sin_addr));
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bzero(buff,sizeof(buff));
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sprintf(buff, "%s", (char*)inet_ntoa(((struct sockaddr_in*) (&buf[if_len].ifr_addr))->sin_addr));
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inet_pton(AF_INET, buff, &ip);
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memcpy(net_interface[if_len].br_ip, &ip, 4);
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}
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else
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{
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char str[256];
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sprintf(str, "SIOCGIF./ADDR ioctl %s", buf[if_len].ifr_name);
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perror(str);
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}
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/*MAC地址 */
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if (!(ioctl(sock_raw_fd, SIOCGIFHWADDR, (char *) &buf[if_len])))
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{
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printf("MAC:%02x:%02x:%02x:%02x:%02x:%02x\n\n",
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(unsigned char) buf[if_len].ifr_hwaddr.sa_data[0],
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(unsigned char) buf[if_len].ifr_hwaddr.sa_data[1],
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(unsigned char) buf[if_len].ifr_hwaddr.sa_data[2],
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(unsigned char) buf[if_len].ifr_hwaddr.sa_data[3],
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(unsigned char) buf[if_len].ifr_hwaddr.sa_data[4],
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(unsigned char) buf[if_len].ifr_hwaddr.sa_data[5]);
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memcpy(net_interface[if_len].mac, (unsigned char *)buf[if_len].ifr_hwaddr.sa_data, 6);
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}
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else
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{
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char str[256];
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sprintf(str, "SIOCGIFHWADDR ioctl %s", buf[if_len].ifr_name);
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perror(str);
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}
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}//–while end
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close(sock_raw_fd); //关闭socket
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}
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