[记]WIndow/Linux 获取本机(全部)IPv4、IPv6、MAC地址方法 (C/C++)

Linux 获取本机IP、MAC地址用法大全

 //#include <sys/types.h>
 #include <ifaddrs.h>
 #include <sys/ioctl.h>
 #include <net/if.h>
 #include <string.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <netdb.h>
 //#include <sys/socket.h>
 //#include <netinet/in.h>
 #include <arpa/inet.h>
 void pHx(unsigned char* p,int len){
   printf("Hex: ");
   for(int i=;i<len;i++){
     printf("%02X:",p[i]);
   }
   printf("\b\n");
 }
 char* getMac(char* mac,char* dv){
     struct   ifreq   ifreq;
     int   sock;
     if(!mac || !dv)
         return mac;
     if((sock=socket(AF_INET,SOCK_STREAM,)) <)
     {
         perror( "socket ");
         return mac;
     }
     strcpy(ifreq.ifr_name,dv);
     if(ioctl(sock,SIOCGIFHWADDR,&ifreq) <)
     {
         perror( "ioctl ");
         return mac;
     }
     pHx((unsigned char*)ifreq.ifr_hwaddr.sa_data,sizeof(ifreq.ifr_hwaddr.sa_data));
     sprintf(mac, "%02X:%02X:%02X:%02X:%02X:%02X", //以太网MAC地址的长度是48位
            (unsigned char)ifreq.ifr_hwaddr.sa_data[],
            (unsigned char)ifreq.ifr_hwaddr.sa_data[],
            (unsigned char)ifreq.ifr_hwaddr.sa_data[],
            (unsigned char)ifreq.ifr_hwaddr.sa_data[],
            (unsigned char)ifreq.ifr_hwaddr.sa_data[],
            (unsigned char)ifreq.ifr_hwaddr.sa_data[]);
     return mac;
 }

 int main (int argc, const char * argv[])
 {
     char hname[];
     struct hostent *hent;
     int i;

     gethostname(hname, sizeof(hname));

     //hent = gethostent();
     hent = gethostbyname(hname);

     printf("hostname: %s\n", hent->h_name);
 //----------------------------------------------------------
     printf("\n\n");

     char mac[];
     struct ifaddrs * ifap0=NULL,*ifap=NULL;
     void * tmpAddrPtr=NULL;

     getifaddrs(&ifap0);
     ifap=ifap0;
     while (ifap!=NULL) {
         if (ifap->ifa_addr->sa_family==AF_INET) { // check it is IP4
             // is a valid IP4 Address
             tmpAddrPtr=&((struct sockaddr_in *)ifap->ifa_addr)->sin_addr;
             char addressBuffer[INET_ADDRSTRLEN];
             inet_ntop(AF_INET, tmpAddrPtr, addressBuffer, INET_ADDRSTRLEN);
             if(strcmp(addressBuffer,"127.0.0.1")!=){
             printf("%s IPv4: %s\n", ifap->ifa_name, addressBuffer);
             printf("MAC: %s\n\n",getMac(mac,ifap->ifa_name));
             }
         } else if (ifap->ifa_addr->sa_family==AF_INET6) { // check it is IP6
             // is a valid IP6 Address
             tmpAddrPtr=&((struct sockaddr_in *)ifap->ifa_addr)->sin_addr;
             char addressBuffer[INET6_ADDRSTRLEN];
             inet_ntop(AF_INET6, tmpAddrPtr, addressBuffer, INET6_ADDRSTRLEN);
             if(strcmp(addressBuffer,"::")!=){
                 printf("%s IPv6: %s\n", ifap->ifa_name, addressBuffer);
                 printf("MAC: %s\n\n",getMac(mac,ifap->ifa_name));
             }
         }
         ifap=ifap->ifa_next;
     }
     if (ifap0) { freeifaddrs(ifap0); ifap0 = NULL; }
     return ;
 } 

输出:

hostname: localhost

eth0 IPv4: 192.168.42.2
MAC: 02:42:c0:a8:2a:02

eth0 IPv6: 0:0:fe80::42:c0ff
MAC: 02:42:c0:a8:2a:02

(更多参考:Linux 获取本机IP、MAC地址用法大全)

　　

windows下,详情见：http://www.cnblogs.com/lzpong/p/6137652.html