uniqueIdentifier在ios7不支持后的替代方法

UIDevice的uniqueIdentifier方法在ios7就不支持了, 为了获得设备相关的唯一标识符, 
参考了这里：https://github.com/Itayber/UIDevice-uniqueID

但是改了部分代码（下面会贴上代码）. 另外，真机编译会出问题，解决记录如下：
1.  把我修改了的UIDevice-uniqueID.h/m(见下面代码)加到工程里.
2.  加IOKit.framework:
把IOKit.framework(在/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk/System/Library/Frameworks/IOKit.framework) 拖到 编译选项-Build Phases-Link Binary With Libraries里.(注意到这个framework里没有头文件...)
3.  加IOKit的头文件:
    在工程目录下的源文件目录里新建IOKit文件夹,
把/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/Frameworks/IOKit.framework/Headers里的文件都拷贝到该目录里.
    同时添加好头文件搜索路径：
    在编译选项-Build Settings-Header Search Paths添加$SRCROOT,并且可递归遍历:recursive.
4. done.

注意：这个方法虽然算出了设备相关的唯一标识符，但其结果和原uniqueIdentifier函数结果是不一样的，且如果上appStore很有可能会被苹果审核为不通过.
--------------------------------------------贴代码:--------------------------------------------
UIDevice-uniqueID.h

/** *  @brief 计算设备相关唯一标识符. *  @note 来自https://github.com/Itayber/UIDevice-uniqueID, 但是修改了部分算法.by xiaoU. **/#import <UIKit/UIDevice.h>@interface UIDevice (uniqueID)- (NSString *) uniqueID;- (NSString *) wifiMAC;- (NSString *) bluetoothMAC;- (NSString *) serialNumber;- (NSString *) deviceIMEI;- (NSString *)deviceECID;@end

UIDevice-uniqueID.m

#import "UIDevice-uniqueID.h"#include <arpa/inet.h>#include <net/if.h>#include <net/if_dl.h>#include <arpa/inet.h>#include <ifaddrs.h>#import <mach/mach_port.h>#import <CommonCrypto/CommonDigest.h>#import <IOKit/IOKitLib.h> // add by U.NSArray *getValue(NSString *iosearch);// thanks Erica Sadun! // (spent time on this without realizing you had already wrote what I was looking for!)NSArray *getValue(NSString *iosearch){    mach_port_t          masterPort;    CFTypeID             propID = (CFTypeID) NULL;    unsigned int         bufSize;        kern_return_t kr = IOMasterPort(MACH_PORT_NULL, &masterPort);    if (kr != noErr) return nil;        io_registry_entry_t entry = IORegistryGetRootEntry(masterPort);    if (entry == MACH_PORT_NULL) return nil;        CFTypeRef prop = IORegistryEntrySearchCFProperty(entry, kIODeviceTreePlane, (CFStringRef) iosearch, nil, kIORegistryIterateRecursively);    if (!prop) return nil;    propID = CFGetTypeID(prop);    if (!(propID == CFDataGetTypeID())) {mach_port_deallocate(mach_task_self(), masterPort);return nil;}        CFDataRef propData = (CFDataRef) prop;    if (!propData) return nil;        bufSize = CFDataGetLength(propData);    if (!bufSize) return nil;        NSString *p1 = [[[NSString alloc] initWithBytes:CFDataGetBytePtr(propData) length:bufSize encoding:1] autorelease];    mach_port_deallocate(mach_task_self(), masterPort);    return [p1 componentsSeparatedByString:@"\0"];}@implementation UIDevice (uniqueID)// UDID = SHA1(SerialNumber + IMEI + WiFiAddress + BluetoothAddress) // http://iphonedevwiki.net/index.php/Lockdownd /** add by U: 这网址里说了, iphone4之后，公示应该是：SHA1(SerialNumber + ECID + WiFiAddress + BluetoothAddress).   而实际真机测试发现- deviceIMEI函数获取不到IMEI.  所以修改了这函数. */- (NSString *) uniqueID{    // Returns a random hash if run in the simulator#if TARGET_IPHONE_SIMULATOR    return [[[[[NSProcessInfo processInfo] globallyUniqueString] stringByReplacingOccurrencesOfString:@"-" withString:@""] substringToIndex:40] lowercaseString];    #endif        NSString *concat = [NSString stringWithFormat:@"%@%@%@%@",                                                    [self serialNumber],                                                    [self deviceECID],//[self deviceIMEI],                                                    [self wifiMAC],                                                    [self bluetoothMAC]];            const char *cconcat = [concat UTF8String];        unsigned char result[20];    CC_SHA1(cconcat,strlen(cconcat),result);        NSMutableString *hash = [NSMutableString string];    int i;    for (i=0; i < 20; i++)    {        [hash appendFormat:@"%02x",result[i]];    }        return [hash lowercaseString];}- (NSString *) wifiMAC{    struct ifaddrs *interfaces;    const struct ifaddrs *tmpaddr;        if (getifaddrs(&interfaces)==0)    {        tmpaddr = interfaces;                while (tmpaddr != NULL)        {            if (strcmp(tmpaddr->ifa_name,"en0")==0)            {                struct sockaddr_dl *dl_addr = ((struct sockaddr_dl *)tmpaddr->ifa_addr);                uint8_t *base = (uint8_t *)&dl_addr->sdl_data[dl_addr->sdl_nlen];                                NSMutableString *s = [NSMutableString string];                int i;                for (i=0; i < dl_addr->sdl_alen; i++)                {                    [s appendFormat:(i!=0)?@":%02x":@"%02x",base[i]];                }                                return s;            }                        tmpaddr = tmpaddr->ifa_next;        }                freeifaddrs(interfaces);    }    return @"00:00:00:00:00:00";}// I hope someone will find a better way to do this- (NSString *) bluetoothMAC{    mach_port_t port;        IOMasterPort(MACH_PORT_NULL,&port);        CFMutableDictionaryRef bt_dict = IOServiceNameMatching("bluetooth");    mach_port_t btservice = IOServiceGetMatchingService(port, bt_dict);        CFDataRef bt_data = (CFDataRef)IORegistryEntrySearchCFProperty(btservice,"IODevicTree",(CFStringRef)@"local-mac-address", kCFAllocatorDefault, 1);        NSString *string = [((NSData *)bt_data) description];        string = [string stringByReplacingOccurrencesOfString:@"<" withString:@""];    string = [string stringByReplacingOccurrencesOfString:@">" withString:@""];    string = [string stringByReplacingOccurrencesOfString:@" " withString:@""];            NSMutableString *btAddr = [NSMutableString string];        int x=0;    while (x<12)    {        x++;        [btAddr appendFormat:((x!=12&&x%2==0)?@"%C:":@"%C"),[string characterAtIndex:(x-1)]];    }        return btAddr;}- (NSString *) serialNumber{    return [getValue(@"serial-number") objectAtIndex:0];}- (NSString *) deviceIMEI{    return [getValue(@"device-imei") objectAtIndex:0];}/// add by U://- (NSString *)deviceECID{    NSString * res = nil;    if (CFMutableDictionaryRef dict = IOServiceMatching("IOPlatformExpertDevice")) {        if (io_service_t service = IOServiceGetMatchingService(kIOMasterPortDefault, dict)) {            if (CFTypeRef ecid = IORegistryEntrySearchCFProperty(service, kIODeviceTreePlane, CFSTR("unique-chip-id"), kCFAllocatorDefault, kIORegistryIterateRecursively)) {                NSData *data((NSData *) ecid);                size_t length([data length]);                uint8_t bytes[length];                [data getBytes:bytes];                char string[length * 2 + 1];                for (size_t i(0); i != length; ++i)                    sprintf(string + i * 2, "%.2X", bytes[length - i - 1]);                printf("%s", string);                res = [[[NSString alloc] initWithCString:string encoding:NSASCIIStringEncoding] autorelease];                CFRelease(ecid);            }            IOObjectRelease(service);        }    }    return res;}@end