Skip to content

Instantly share code, notes, and snippets.

@Coeur
Created November 30, 2011 17:11
Show Gist options
  • Save Coeur/1409855 to your computer and use it in GitHub Desktop.
Save Coeur/1409855 to your computer and use it in GitHub Desktop.
Get iOS MAC address #
/* Original source code courtesy John from iOSDeveloperTips.com */
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_dl.h>
+ (NSString *)getMacAddress
{
int mgmtInfoBase[6];
char *msgBuffer = NULL;
NSString *errorFlag = NULL;
size_t length;
// Setup the management Information Base (mib)
mgmtInfoBase[0] = CTL_NET; // Request network subsystem
mgmtInfoBase[1] = AF_ROUTE; // Routing table info
mgmtInfoBase[2] = 0;
mgmtInfoBase[3] = AF_LINK; // Request link layer information
mgmtInfoBase[4] = NET_RT_IFLIST; // Request all configured interfaces
// With all configured interfaces requested, get handle index
if ((mgmtInfoBase[5] = if_nametoindex("en0")) == 0)
errorFlag = @"if_nametoindex failure";
// Get the size of the data available (store in len)
else if (sysctl(mgmtInfoBase, 6, NULL, &length, NULL, 0) < 0)
errorFlag = @"sysctl mgmtInfoBase failure";
// Alloc memory based on above call
else if ((msgBuffer = malloc(length)) == NULL)
errorFlag = @"buffer allocation failure";
// Get system information, store in buffer
else if (sysctl(mgmtInfoBase, 6, msgBuffer, &length, NULL, 0) < 0)
{
free(msgBuffer);
errorFlag = @"sysctl msgBuffer failure";
}
else
{
// Map msgbuffer to interface message structure
struct if_msghdr *interfaceMsgStruct = (struct if_msghdr *) msgBuffer;
// Map to link-level socket structure
struct sockaddr_dl *socketStruct = (struct sockaddr_dl *) (interfaceMsgStruct + 1);
// Copy link layer address data in socket structure to an array
unsigned char macAddress[6];
memcpy(&macAddress, socketStruct->sdl_data + socketStruct->sdl_nlen, 6);
// Read from char array into a string object, into traditional Mac address format
NSString *macAddressString = [NSString stringWithFormat:@"%02X:%02X:%02X:%02X:%02X:%02X",
macAddress[0], macAddress[1], macAddress[2], macAddress[3], macAddress[4], macAddress[5]];
NSLog(@"Mac Address: %@", macAddressString);
// Release the buffer memory
free(msgBuffer);
return macAddressString;
}
// Error...
NSLog(@"Error: %@", errorFlag);
return nil;
}
@Coeur
Copy link
Author

Coeur commented Apr 7, 2014

@JeanetteMueller and @tleavy86 no, not a bug, harpher is right about it
@chrismaddern yes: free to use, but I was requested to leave some "Original source code courtesy John from iOSDeveloperTips.com"
@jontyankit I will investigate with CoreBluetooth maybe
For all: sorry, I never received any email alert for your comments, so I didn't notice for months there were comments here.

@gringan
Copy link

gringan commented Feb 15, 2015

Hi. Coeur, i need this code but i have wrong value on my Iphone6+ Please can you help me ?
2015-02-15 15:37:37.947 MyDemo[438:223963] Mac Address: 02:00:00:00:00:00
Thanks :)

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment