C++)

Linux 获取本机IP、MAC地址用法大全

 1   
 2 //#include <sys/types.h>
 3 #include <ifaddrs.h>
 4 #include <sys/ioctl.h> 
 5 #include <net/if.h> 
 6 #include <string.h> 
 7 #include <stdio.h>
 8 #include <unistd.h>
 9 #include <netdb.h>
10 //#include <sys/socket.h>
11 //#include <netinet/in.h>
12 #include <arpa/inet.h>
13 void pHx(unsigned char* p,int len){
14   printf("Hex: ");
15   for(int i=0;i<len;i++){
16     printf("%02X:",p[i]);
17   }
18   printf("\b\n");
19 }
20 char* getMac(char* mac,char* dv){
21     struct   ifreq   ifreq; 
22     int   sock; 
23     if(!mac || !dv)
24         return mac;
25     if((sock=socket(AF_INET,SOCK_STREAM,0)) <0) 
26     { 
27         perror( "socket "); 
28         return mac; 
29     } 
30     strcpy(ifreq.ifr_name,dv); 
31     if(ioctl(sock,SIOCGIFHWADDR,&ifreq) <0) 
32     { 
33         perror( "ioctl "); 
34         return mac; 
35     }
36     pHx((unsigned char*)ifreq.ifr_hwaddr.sa_data,sizeof(ifreq.ifr_hwaddr.sa_data));
37     sprintf(mac, "%02X:%02X:%02X:%02X:%02X:%02X", //以太网MAC地址的长度是48位
38            (unsigned char)ifreq.ifr_hwaddr.sa_data[0], 
39            (unsigned char)ifreq.ifr_hwaddr.sa_data[1], 
40            (unsigned char)ifreq.ifr_hwaddr.sa_data[2], 
41            (unsigned char)ifreq.ifr_hwaddr.sa_data[3], 
42            (unsigned char)ifreq.ifr_hwaddr.sa_data[4], 
43            (unsigned char)ifreq.ifr_hwaddr.sa_data[5]);
44     return mac;
45 }
46 
47 int main (int argc, const char * argv[])
48 {
49     char hname[128];
50     struct hostent *hent;
51     int i;
52 
53     gethostname(hname, sizeof(hname));
54 
55     //hent = gethostent();
56     hent = gethostbyname(hname);
57 
58     printf("hostname: %s\n", hent->h_name);
59 //----------------------------------------------------------
60     printf("\n\n");
61 
62     char mac[30];
63     struct ifaddrs * ifap0=NULL,*ifap=NULL;
64     void * tmpAddrPtr=NULL;
65 
66     getifaddrs(&ifap0);
67     ifap=ifap0;
68     while (ifap!=NULL) {
69         if (ifap->ifa_addr->sa_family==AF_INET) { // check it is IP4
70             // is a valid IP4 Address
71             tmpAddrPtr=&((struct sockaddr_in *)ifap->ifa_addr)->sin_addr;
72             char addressBuffer[INET_ADDRSTRLEN];
73             inet_ntop(AF_INET, tmpAddrPtr, addressBuffer, INET_ADDRSTRLEN);
74             if(strcmp(addressBuffer,"127.0.0.1")!=0){
75             printf("%s IPv4: %s\n", ifap->ifa_name, addressBuffer);
76             printf("MAC: %s\n\n",getMac(mac,ifap->ifa_name));
77             }
78         } else if (ifap->ifa_addr->sa_family==AF_INET6) { // check it is IP6
79             // is a valid IP6 Address
80             tmpAddrPtr=&((struct sockaddr_in *)ifap->ifa_addr)->sin_addr;
81             char addressBuffer[INET6_ADDRSTRLEN];
82             inet_ntop(AF_INET6, tmpAddrPtr, addressBuffer, INET6_ADDRSTRLEN);
83             if(strcmp(addressBuffer,"::")!=0){
84                 printf("%s IPv6: %s\n", ifap->ifa_name, addressBuffer); 
85                 printf("MAC: %s\n\n",getMac(mac,ifap->ifa_name));
86             }
87         }
88         ifap=ifap->ifa_next;
89     }
90     if (ifap0) { freeifaddrs(ifap0); ifap0 = NULL; }
91     return 0;
92 }

输出:

<br>hostname: localhost<br><br>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<br>

(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

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