Get MAC Address

Import the System framework:

#import <ifaddrs.h>

#import <arpa/inet.h>

#include <sys/socket.h>

#include <sys/sysctl.h>

#include <net/if.h>

#include <net/if_dl.h>

Code:

Ip

-(NSString *) getipaddress {

nsstring *address = @ "error";

struct Ifaddrs *interfaces = NULL;

struct Ifaddrs *temp_addr = NULL;

int success = 0;

Retrieve the current Interfaces-returns 0 on success

Success = Getifaddrs (&interfaces);

if (success = = 0) {

Loop through linked list of interfaces

TEMP_ADDR = interfaces;

While (temp_addr! = NULL) {

if (temp_addr->ifa_addr->sa_family = = af_inet) {

Check if interface is En0 which are the WiFi connection on the IPhone

if ([[nsstring stringwithutf8string:temp_addr->ifa_name] isequaltostring:@ "En0"]) {

Get NSString from C String

address = [nsstring stringwithutf8string:inet_ntoa ((struct sockaddr_in *) temp_addr->IFA _ADDR,sin_addr)];

}

}

temp_addr = temp_addr->ifa_next;

}

}

Free memory

Freeifaddrs (interfaces);

return address;

}

Mac

-(NSString *) getmacaddress

{

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:@ "%02x:%02x:%02x:%02x:%02x:%02x", *ptr, * (ptr+1 ), * (ptr+2), * (ptr+3), * (ptr+4), * (ptr+5)];

Free (BUF);

return [outstring uppercasestring];

}

Get MAC Address