umeng track 相关

    NSString * appKey = @"57105bbbe0f55a7938002063";
    NSString * deviceName = [[[UIDevice currentDevice] name] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    NSString * mac = [self macString];
    NSString * idfa = [self idfaString];
    NSString * idfv = [self idfvString];
    NSString * urlString = [NSString stringWithFormat:@"http://log.umtrack.com/ping/%@/?devicename=%@&mac=%@&idfa=%@&idfv=%@", appKey, deviceName, mac, idfa, idfv];
    [NSURLConnection connectionWithRequest:[NSURLRequest requestWithURL: [NSURL URLWithString:urlString]] delegate:nil];

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

//for idfa
#import <AdSupport/AdSupport.h>

- (NSString * )macString{
    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");
        free(buf);
        return NULL;
    }

    ifm = (struct if_msghdr *)buf;
    sdl = (struct sockaddr_dl *)(ifm + 1);
    ptr = (unsigned char *)LLADDR(sdl);
    NSString *macString = [NSString stringWithFormat:@"%02X:%02X:%02X:%02X:%02X:%02X",
        *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
    free(buf);

    return macString;
}

- (NSString *)idfaString {

    NSBundle *adSupportBundle = [NSBundle bundleWithPath:@"/System/Library/Frameworks/AdSupport.framework"];
    [adSupportBundle load];

    if (adSupportBundle == nil) {
        return @"";
    }
    else{

        Class asIdentifierMClass = NSClassFromString(@"ASIdentifierManager");

        if(asIdentifierMClass == nil){
            return @"";
        }
        else{

            //for no arc
            //ASIdentifierManager *asIM = [[[asIdentifierMClass alloc] init] autorelease];
            //for arc
            ASIdentifierManager *asIM = [[asIdentifierMClass alloc] init];

            if (asIM == nil) {
                return @"";
            }
            else{

                if(asIM.advertisingTrackingEnabled){
                    return [asIM.advertisingIdentifier UUIDString];
                }
                else{
                    return [asIM.advertisingIdentifier UUIDString];
                }
            }
        }
    }
}

- (NSString *)idfvString
{
    if([[UIDevice currentDevice] respondsToSelector:@selector( identifierForVendor)]) {
        return [[UIDevice currentDevice].identifierForVendor UUIDString];
    }

    return @"";
}