如果不是，请使用“IPHONE UDID”？ [英] What to use if not "IPHONE UDID"?

问题描述

哇...看看本周在线使用iPhone的UDID的所有恐慌故事。

  [[ UIDevice currentDevice] uniqueIdentifier] 
  

我们正在使用什么？ p>

如果手机出售给另一个用户...而应用程序已经根据手机的UDID存储了一些数据在远程服务器上？

（当然，我想避免应用商店的加密限制的问题。）

解决方案

有一个很好的UIDevice扩展类别 here

   - （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\\\
）; 
返回NULL; 
} 
 
 if（sysctl（mib，6，NULL，& len，NULL，0）< 0）{
 printf（Error：sysctl，take 1\\ \
）; 
返回NULL; 
} 
 
 if（（buf = malloc（len））== NULL）{
 printf（无法分配内存错误！\\\
）; 
返回NULL; 
} 
 
 if（sysctl（mib，6，buf，& len，NULL，0）< 0）{
 printf（Error：sysctl，take 2 ）; 
返回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），* +2），*（ptr + 3），*（ptr + 4），*（ptr + 5）]; 
 // NSString * outstring = [NSString stringWithFormat：@％02X％02X％02X％02X％02X％02X，
 // * ptr，*（ptr + 1），*（ptr + 2），*（ptr + 3），*（ptr + 4），*（ptr + 5）]; 
免费（buf）; 
 
返回outstring; 
} 
  

你可以用模型来填充这个？

Wow... look at all the "panic stories" online this week regarding using an iPhone's UDID.

 [[UIDevice currentDevice] uniqueIdentifier]

What SHOULD we be using instead?

What if the phone is sold to another user... and an app has stored some data on a remote server, based on the phone's UDID?

(Of course, I want to avoid the problems with the app store's "encryption restrictions".)

解决方案

Why not use the Mac Address and possibly then hash it up.

There is an excellent UIDevice-Extension Category here

    - (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:@"%02X:%02X:%02X:%02X:%02X:%02X", 
                           *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
    // 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;
}

You could possibly hash this with the model?

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