getiosdeviceid

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_6_0
#import <AdSupport/AdSupport.h>
#endif

#include <sys/socket.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_dl.h>

#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)


- (NSString*)getTapjoyDeviceID
{
        NSString *deviceid = @"";
        
    if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"6.0"))
    {
        NSLog(@"DEVICE ID - advertising ID");
        deviceid = [self getAdvID];
    }
    else
    {
        NSLog(@"DEVICE ID - macaddress");
        deviceid = [self getMACID];
    }
        return deviceid;
}

- (NSString*)getAdvID
{
    NSString *advID = [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];
    advID =  [advID stringByReplacingOccurrencesOfString:@"-" withString:@""];
    advID = [advID lowercaseString];
    return advID;
}

- (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)
        {
                NSLog(@"Error: if_nametoindex error\n");
                return NULL;
        }
        
        if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0)
        {
                NSLog(@"Error: sysctl, take 1\n");
                return NULL;
        }
        
        if ((buf = malloc(len)) == NULL)
        {
                NSLog(@"Could not allocate memory. error!\n");
                return NULL;
        }
        
        if (sysctl(mib, 6, buf, &len, NULL, 0) < 0)
        {
                NSLog(@"Error: sysctl, take 2");
                free(buf);
                return NULL;
        }
        
        ifm = (struct if_msghdr *)buf;
        sdl = (struct sockaddr_dl *)(ifm + 1);
        ptr = (unsigned char *)LLADDR(sdl);
        NSString *macAddress = [NSString stringWithFormat:@"%02X:%02X:%02X:%02X:%02X:%02X",
                                                        *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
        macAddress = [macAddress lowercaseString];
        free(buf);
        
        return macAddress;
}


- (NSString*)getMACID
{
        NSString *macID = [[self getMACAddress] stringByReplacingOccurrencesOfString:@":" withString:@""];
        
        return macID;
}