iOS get MAC Address

#include//per MSQR

#include

#include

#include

#pragma Mark MAC

Return The local MAC Addy

Courtesy of FreeBSD Hackers Email list

Accidentally munged during previous update. Fixed thanks to Mlamb.

-(NSString *) macaddress

{

int mib[6];

size_t Len;

Char *buf;

unsigned char *ptr;

struct IF_MSGHDR *IFM;

struct SOCKADDR_DL *sdl;

Mib[0] = ctl_net;

MIB[1] = Af_route;

MIB[2] = 0;

MIB[3] = Af_link;

MIB[4] = net_rt_iflist;

if ((mib[5] = If_nametoindex ("en0") = = = 0) {

printf ("Error:if_nametoindex error/n");

return NULL;

}

if (Sysctl (MIB, 6, NULL, &len, NULL, 0) < 0) {

printf ("Error:sysctl, Take 1/n");

return NULL;

}

if ((buf = malloc (len)) = = NULL) {

printf ("Could not allocate memory. error!/n ");

return NULL;

}

if (Sysctl (MIB, 6, buf, &len, NULL, 0) < 0) {

printf ("Error:sysctl, take 2");

return NULL;

}

IFM = (struct IF_MSGHDR *) buf;

SDL = (struct SOCKADDR_DL *) (IFM + 1);

ptr = (unsigned char *) lladdr (SDL);

NSString *outstring = [NSString stringwithformat:@ "x:x:x:x:x:x", *ptr, * (ptr+1), * (ptr+2), * (ptr+3), * (PTR+4), * (ptr+5 )];

NSString *outstring = [NSString stringwithformat:@ "xxxxxx", *ptr, * (ptr+1), * (ptr+2), * (ptr+3), * (PTR+4), * (ptr+5)];

Free (BUF);

return [outstring uppercasestring];

}

Transfer from http://blog.csdn.net/doubleuto/article/details/6599516

iOS get MAC Address