开源框架OpenUDID源码和伪源码分析

本文主要是介绍开源框架OpenUDID源码和伪源码分析，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

源码加上翻译是

// Private method to create and return a new OpenUDID
// Theoretically, this function is called once ever per application when calling [OpenUDID value] for the first time.
// After that, the caching/pasteboard/redundancy mechanism inside [OpenUDID value] returns a persistent and cross application OpenUDID
//
//创建并返回新OpenUDID的私有方法//理论上，当第一次调用[OpenUDID value]时，每个应用程序都会调用此函数一次。//之后，[OpenUDID value]中的缓存/粘贴板/冗余机制返回一个持久的、跨应用程序的OpenUDID
+ (NSString*) _generateFreshOpenUDID {NSString* _openUDID = nil;//2011年8月：有一天，iOS可能不再允许这样做。如果是这样的话，就把这一行注释掉。//2012年3月25日：这一天到了，让我们删除这个“非法”的电话。。。//2012年8月：好吧，也许什么都不做；无论如何，WWDC2012给了我们一些东西来工作；请看下面// August 2011: One day, this may no longer be allowed in iOS. When that is, just comment this line out.// March 25th 2012: this day has come, let's remove this "outlawed" call...// August 2012: well, perhaps much ado about nothing; in any case WWDC2012 gave us something to work with; read below
#if TARGET_OS_IPHONE	
//    if([UIDevice instancesRespondToSelector:@selector(uniqueIdentifier)]){
//        _openUDID = [[UIDevice currentDevice] uniqueIdentifier];
//    }
#endif//// !!!!! IMPORTANT README !!!!!//// August 2012: iOS 6 introduces new APIs that help us deal with the now deprecated [UIDevice uniqueIdentifier]// Since iOS 6 is still pre-release and under NDA, the following piece of code is meant to produce an error at// compile time. Accredited developers integrating OpenUDID are expected to review the iOS 6 release notes and// documentation, and replace the underscore ______ in the last part of the selector below with the right// selector syntax as described here (make sure to use the right one! last word starts with the letter "A"):// https://developer.apple.com/library/prerelease/ios/#documentation/UIKit/Reference/UIDevice_Class/Reference/UIDevice.html//// !!!!! 重要自述！！！！！////2012年8月：iOS 6引入了新的api，帮助我们处理现在被弃用的[UIDevice uniqueIdentifier]//由于iOS 6仍然是预发行版，并且在NDA下，下面的代码将在//编译时。集成OpenUDID的合格开发人员将审查iOS 6发行说明和//文档，并将下面选择器最后部分的下划线替换为右侧//这里描述的选择器语法（确保使用正确的语法！最后一个字以字母“A”）开头：// The semantic compiler warnings are still normal if you are compiling for iOS 5 only since Xcode will not// know about the two instance methods used on that line; the code running on iOS will work well at run-time.// Either way, it's time that you junped on the iOS 6 bandwagon and start testing your code on iOS 6 ;-)//// WHAT IS THE SIGNIFICANCE OF THIS CHANGE?//// Essentially, this means that OpenUDID will keep on behaving the same way as before for existing users or// new users in iOS 5 and before. For new users on iOS 6 and after, the new official public APIs will take over.// OpenUDID will therefore be obsoleted when iOS reaches significant adoption, anticipated around mid-2013.//如果只为iOS 5编译，语义编译器警告仍然是正常的，因为Xcode不会//了解这一行中使用的两个实例方法；在iOS上运行的代码在运行时可以很好地工作。//不管怎样，现在是时候让你沉迷于iOS 6的潮流，开始在ios6上测试你的代码了；-）////这一变化的意义何在？////本质上，这意味着OpenUDID将继续以与以前相同的方式对现有用户或//iOS5及之前的新用户。对于iOS 6及以后的新用户，新的官方公共api将接管。//因此，当iOS在2013年年中被广泛采用时，OpenUDID将被淘汰。/*September 14; ok, new development. The alleged API has moved!This part of the code will therefore be updated when iOS 6 is actually released.Nevertheless, if you want to go ahead, the code should be pretty easy toguess... it involves including a .h file from a nine-letter framework that endswith the word "Support", and then assigning _openUDID with the only identifier method called on the sharedManager of that new class... don't forget to addthe framework to your project!9月14日；好的，新的发展。所谓的API已经移动了！因此，这部分代码将在iOS 6实际发布时更新。不过，如果您想继续，代码应该很容易猜猜看。。。它包括一个9个字母的框架中的.h文件使用“支持”一词，然后使用在该新类的sharedManager上调用的唯一标识符方法分配openUDID。。。别忘了加上你的项目框架！
#if TARGET_OS_IPHONEif (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"6.0")) {_openUDID = [[[UIDevice currentDevice] identifierForA_______] UUIDString];
# error                                                         ^ read comments above, fix accordingly, and remove this #error line}
#endif*/// Next we generate a UUID.// UUIDs (Universally Unique Identifiers), also known as GUIDs (Globally Unique Identifiers) or IIDs// (Interface Identifiers), are 128-bit values guaranteed to be unique. A UUID is made unique over // both space and time by combining a value unique to the computer on which it was generated—usually the// Ethernet hardware address—and a value representing the number of 100-nanosecond intervals since // October 15, 1582 at 00:00:00.// We then hash this UUID with md5 to get 32 bytes, and then add 4 extra random bytes// Collision is possible of course, but unlikely and suitable for most industry needs (e.g. aggregate tracking)////接下来我们生成一个UUID。//uuid（通用唯一标识符），也称为guid（全局唯一标识符）或iid//（接口标识符）是保证唯一的128位值。UUID在//空间和时间都是通过组合计算机所特有的值来生成的，通常//以太网硬件地址和一个值，表示自//1582年10月15日00:00:00。//然后我们用md5散列这个UUID，得到32个字节，然后再添加4个随机字节//当然，碰撞是可能的，但不太可能，而且适合大多数行业的需要（例如，聚合跟踪）//if (_openUDID==nil) {CFUUIDRef uuid = CFUUIDCreate(kCFAllocatorDefault);CFStringRef cfstring = CFUUIDCreateString(kCFAllocatorDefault, uuid);const char *cStr = CFStringGetCStringPtr(cfstring,CFStringGetFastestEncoding(cfstring));unsigned char result[16];CC_MD5( cStr, strlen(cStr), result );CFRelease(uuid);CFRelease(cfstring);_openUDID = [NSString stringWithFormat:@"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%08x",result[0], result[1], result[2], result[3], result[4], result[5], result[6], result[7],result[8], result[9], result[10], result[11],result[12], result[13], result[14], result[15],(NSUInteger)(arc4random() % NSUIntegerMax)];  }//给开源社区中的其他开发人员打电话：////请随意建议更好或替代的“UDID”生成代码以上。//注意，目标不是寻找更好的散列方法，而是寻找分散的方法（即，不是基于web的方法）//160位/20字节的随机字符串生成器，可能的冲突最少。//// Call to other developers in the Open Source community://// feel free to suggest better or alternative "UDID" generation code above.// NOTE that the goal is NOT to find a better hash method, but rather, find a decentralized (i.e. not web-based)// 160 bits / 20 bytes random string generator with the fewest possible collisions.// return _openUDID;
}// Main public method that returns the OpenUDID
// This method will generate and store the OpenUDID if it doesn't exist, typically the first time it is called
// It will return the null udid (forty zeros) if the user has somehow opted this app out (this is subject to 3rd party implementation)
// Otherwise, it will register the current app and return the OpenUDID
//
//返回OpenUDID的主公共方法//如果OpenUDID不存在，这个方法将生成并存储它，通常是在第一次调用它时//如果用户以某种方式选择了此应用程序，它将返回空udid（40个零）（这取决于第三方实现）//否则，它将注册当前应用程序并返回OpenUDID//
+ (NSString*) value {return [OpenUDID valueWithError:nil];
}+ (NSString*) valueWithError:(NSError **)error {if (kOpenUDIDSessionCache!=nil) {if (error!=nil)*error = [NSError errorWithDomain:kOpenUDIDDomaincode:kOpenUDIDErrorNoneuserInfo:[NSDictionary dictionaryWithObjectsAndKeys:@"OpenUDID in cache from first call",@"description", nil]];return kOpenUDIDSessionCache;}NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];// The AppUID will uniquely identify this app within the pastebins//AppUID将在pastebins中唯一标识此应用程序NSString * appUID = [defaults objectForKey:kOpenUDIDAppUIDKey];if(appUID == nil){// generate a new uuid and store it in user defaultsCFUUIDRef uuid = CFUUIDCreate(NULL);appUID = (NSString *) CFUUIDCreateString(NULL, uuid);CFRelease(uuid);[appUID autorelease];}NSString* openUDID = nil;NSString* myRedundancySlotPBid = nil;NSDate* optedOutDate = nil;BOOL optedOut = NO;BOOL saveLocalDictToDefaults = NO;BOOL isCompromised = NO;// Do we have a local copy of the OpenUDID dictionary?// This local copy contains a copy of the openUDID, myRedundancySlotPBid (and unused in this block, the local bundleid, and the timestamp)////我们有OpenUDID字典的本地副本吗？//此本地副本包含openUDID、myRedundancySlotPBid的副本（在此块中未使用、本地bundleid和时间戳）id localDict = [defaults objectForKey:kOpenUDIDKey];if ([localDict isKindOfClass:[NSDictionary class]]) {localDict = [NSMutableDictionary dictionaryWithDictionary:localDict]; // we might need to set/overwrite the redundancy slotopenUDID = [localDict objectForKey:kOpenUDIDKey];myRedundancySlotPBid = [localDict objectForKey:kOpenUDIDSlotKey];optedOutDate = [localDict objectForKey:kOpenUDIDOOTSKey];optedOut = optedOutDate!=nil;OpenUDIDLog(@"localDict = %@",localDict);}// Here we go through a sequence of slots, each of which being a UIPasteboard created by each participating app// The idea behind this is to both multiple and redundant representations of OpenUDIDs, as well as serve as placeholder for potential opt-out////在这里，我们将浏览一系列的插槽，每个插槽都是每个参与应用程序创建的UIPasteboard//其背后的思想是同时使用openudid的多个和冗余表示，以及作为潜在退出的占位符NSString* availableSlotPBid = nil;NSMutableDictionary* frequencyDict = [NSMutableDictionary dictionaryWithCapacity:kOpenUDIDRedundancySlots];for (int n=0; n<kOpenUDIDRedundancySlots; n++) {NSString* slotPBid = [NSString stringWithFormat:@"%@%d",kOpenUDIDSlotPBPrefix,n];
#if TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATORUIPasteboard* slotPB = [UIPasteboard pasteboardWithName:slotPBid create:NO];
#elseNSPasteboard* slotPB = [NSPasteboard pasteboardWithName:slotPBid];
#endifOpenUDIDLog(@"SlotPB name = %@",slotPBid);if (slotPB==nil) {// assign availableSlotPBid to be the first one available//将availableSlotPBid指定为第一个可用的if (availableSlotPBid==nil) availableSlotPBid = slotPBid;} else {NSDictionary* dict = [OpenUDID _getDictFromPasteboard:slotPB];NSString* oudid = [dict objectForKey:kOpenUDIDKey];OpenUDIDLog(@"SlotPB dict = %@",dict);if (oudid==nil) {//availableSlotPBid可以位于未找到oudid的非空插槽中// availableSlotPBid could inside a non null slot where no oudid can be foundif (availableSlotPBid==nil) availableSlotPBid = slotPBid;} else {// increment the frequency of this oudid key
//                增加此oudo键的频率int count = [[frequencyDict valueForKey:oudid] intValue];[frequencyDict setObject:[NSNumber numberWithInt:++count] forKey:oudid];}// if we have a match with the app unique id,// then let's look if the external UIPasteboard representation marks this app as OptedOut//如果我们与应用程序唯一id匹配，//然后让我们看看外部UIPasteboard表示是否将此应用程序标记为opendoutNSString* gid = [dict objectForKey:kOpenUDIDAppUIDKey];if (gid!=nil && [gid isEqualToString:appUID]) {myRedundancySlotPBid = slotPBid;//本地词典在选择退出主题上是首选项，因此如果已经在本地选择退出，请忽略// the local dictionary is prime on the opt-out subject, so ignore if already opted-out locallyif (optedOut) {optedOutDate = [dict objectForKey:kOpenUDIDOOTSKey];optedOut = optedOutDate!=nil;   }}}}//对同一OpenUDID（冗余、故障保护）中出现次数最高的频率dict进行排序//最高的是最后一个// sort the Frequency dict with highest occurence count of the same OpenUDID (redundancy, failsafe)// highest is last in the list//NSArray* arrayOfUDIDs = [frequencyDict keysSortedByValueUsingSelector:@selector(compare:)];NSString* mostReliableOpenUDID = (arrayOfUDIDs!=nil && [arrayOfUDIDs count]>0)? [arrayOfUDIDs lastObject] : nil;OpenUDIDLog(@"Freq Dict = %@\nMost reliable %@",frequencyDict,mostReliableOpenUDID);// if openUDID was not retrieved from the local preferences, then let's try to get it from the frequency dictionary above////如果没有从本地首选项中检索到openUDID，那么让我们尝试从上面的频率字典中获取它if (openUDID==nil) {        if (mostReliableOpenUDID==nil) {// this is the case where this app instance is likely to be the first one to use OpenUDID on this device// we create the OpenUDID, legacy or semi-random (i.e. most certainly unique)////在这种情况下，此应用程序实例可能是第一个在此设备上使用OpenUDID的应用程序实例//我们创建OpenUDID、legacy或半随机（也就是说，非常独特）//openUDID = [OpenUDID _generateFreshOpenUDID];} else {// or we leverage the OpenUDID shared by other apps that have already gone through the process////或者我们利用其他已经完成这个过程的应用程序共享的OpenUDIDopenUDID = mostReliableOpenUDID;}// then we create a local representation////然后我们创建一个局部表示if (localDict==nil) { localDict = [NSMutableDictionary dictionaryWithCapacity:4];[localDict setObject:openUDID forKey:kOpenUDIDKey];[localDict setObject:appUID forKey:kOpenUDIDAppUIDKey];[localDict setObject:[NSDate date] forKey:kOpenUDIDTSKey];if (optedOut) [localDict setObject:optedOutDate forKey:kOpenUDIDTSKey];saveLocalDictToDefaults = YES;}}else {// Sanity/tampering check健全/篡改检查if (mostReliableOpenUDID!=nil && ![mostReliableOpenUDID isEqualToString:openUDID])isCompromised = YES;}// Here we store in the available PB slot, if applicable如果适用，我们将存储在可用的PB插槽中OpenUDIDLog(@"Available Slot %@ Existing Slot %@",availableSlotPBid,myRedundancySlotPBid);if (availableSlotPBid!=nil && (myRedundancySlotPBid==nil || [availableSlotPBid isEqualToString:myRedundancySlotPBid])) {
#if TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATORUIPasteboard* slotPB = [UIPasteboard pasteboardWithName:availableSlotPBid create:YES];[slotPB setPersistent:YES];
#elseNSPasteboard* slotPB = [NSPasteboard pasteboardWithName:availableSlotPBid];
#endif// save slotPBid to the defaults, and remember to save later将slotPBid保存为默认值，并记住以后保存if (localDict) {[localDict setObject:availableSlotPBid forKey:kOpenUDIDSlotKey];saveLocalDictToDefaults = YES;}// Save the local dictionary to the corresponding UIPasteboard slot将本地字典保存到相应的UIPasteboard插槽if (openUDID && localDict)[OpenUDID _setDict:localDict forPasteboard:slotPB];}// Save the dictionary locally if applicable在本地保存字典（如果适用）if (localDict && saveLocalDictToDefaults)[defaults setObject:localDict forKey:kOpenUDIDKey];// If the UIPasteboard external representation marks this app as opted-out, then to respect privacy, we return the ZERO OpenUDID, a sequence of 40 zeros...// This is a *new* case that developers have to deal with. Unlikely, statistically low, but still.// To circumvent this and maintain good tracking (conversion ratios, etc.), developers are invited to calculate how many of their users have opted-out from the full set of users.// This ratio will let them extrapolate convertion ratios more accurately.////如果UIPasteboard外部表示将此应用程序标记为已选择退出，那么为了尊重隐私，我们将返回零OpenUDID，一个40个零的序列。。。//这是一个开发人员必须处理的“新”案例。不太可能，统计数据很低，但仍然如此。//为了避免这种情况，并保持良好的跟踪（转换率等），请开发人员计算出有多少用户从完整的用户集中选择出来。//这个比率将使他们能够更准确地推断转换比率。//if (optedOut) {if (error!=nil) *error = [NSError errorWithDomain:kOpenUDIDDomaincode:kOpenUDIDErrorOptedOutuserInfo:[NSDictionary dictionaryWithObjectsAndKeys:[NSString stringWithFormat:@"Application with unique id %@ is opted-out from OpenUDID as of %@",appUID,optedOutDate],@"description", nil]];kOpenUDIDSessionCache = [[NSString stringWithFormat:@"%040x",0] retain];return kOpenUDIDSessionCache;}// return the well earned openUDID!//把赚得盆满钵满的openUDID还给我！if (error!=nil) {if (isCompromised)*error = [NSError errorWithDomain:kOpenUDIDDomaincode:kOpenUDIDErrorCompromiseduserInfo:[NSDictionary dictionaryWithObjectsAndKeys:@"Found a discrepancy between stored OpenUDID (reliable) and redundant copies; one of the apps on the device is most likely corrupting the OpenUDID protocol",@"description", nil]];else*error = [NSError errorWithDomain:kOpenUDIDDomaincode:kOpenUDIDErrorNoneuserInfo:[NSDictionary dictionaryWithObjectsAndKeys:@"OpenUDID succesfully retrieved",@"description", nil]];}kOpenUDIDSessionCache = [openUDID retain];return kOpenUDIDSessionCache;
}

将其添加到工程使用hopper反编译的伪源码是

void * +[OpenUDID _generateFreshOpenUDID](void * self, void * _cmd) {var_58 = 0x0;if (var_58 == 0x0) {var_60 = CFUUIDCreate(*_kCFAllocatorDefault);var_68 = CFUUIDCreateString(*_kCFAllocatorDefault, var_60);rax = CFStringGetFastestEncoding(var_68);rax = CFStringGetCStringPtr(var_68, rax);CC_MD5(rax, strlen(rax), &var_40);CFRelease(var_60);CFRelease(var_68);var_58 = [NSString stringWithFormat:@"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%08x", var_40 & 0xff, var_3F & 0xff, var_3E & 0xff, var_3D & 0xff, var_3C & 0xff, var_3B & 0xff, var_3A & 0xff, var_39 & 0xff, var_38 & 0xff, var_37 & 0xff, var_36 & 0xff, var_35 & 0xff, var_34 & 0xff, var_33 & 0xff, var_32 & 0xff, var_31 & 0xff, arc4random() % 0xffffffffffffffff];}var_100 = var_58;if (*___stack_chk_guard == *___stack_chk_guard) {rax = var_100;}else {rax = __stack_chk_fail();}return rax;
}void * +[OpenUDID valueWithError:](void * self, void * _cmd, void * * arg2) {var_20 = arg2;if (*_kOpenUDIDSessionCache != 0x0) {if (var_20 != 0x0) {*var_20 = [NSError errorWithDomain:@"org.OpenUDID" code:0x0 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:@"OpenUDID in cache from first call", @"description", 0x0]];}var_8 = *_kOpenUDIDSessionCache;}else {var_28 = [NSUserDefaults standardUserDefaults];var_30 = [var_28 objectForKey:@"OpenUDID_appUID"];if (var_30 == 0x0) {var_38 = CFUUIDCreate(0x0);var_30 = CFUUIDCreateString(0x0, var_38);CFRelease(var_38);[var_30 autorelease];}var_40 = 0x0;var_48 = 0x0;var_50 = 0x0;var_51 = 0x0;var_52 = 0x0;var_53 = 0x0;var_60 = [var_28 objectForKey:@"OpenUDID"];if (([var_60 isKindOfClass:[NSDictionary class]] & 0x1) != 0x0) {var_60 = [NSMutableDictionary dictionaryWithDictionary:var_60];var_40 = [var_60 objectForKey:@"OpenUDID"];var_48 = [var_60 objectForKey:@"OpenUDID_slot"];var_50 = [var_60 objectForKey:@"OpenUDID_optOutTS"];var_51 = (var_50 != 0x0 ? 0x1 : 0x0) & 0x1;}var_68 = 0x0;var_70 = [NSMutableDictionary dictionaryWithCapacity:0x64];for (var_74 = 0x0; var_74 < 0x64; var_74 = var_74 + 0x1) {var_80 = [NSString stringWithFormat:@"%@%d", @"org.OpenUDID.slot.", var_74];var_88 = [UIPasteboard pasteboardWithName:var_80 create:0x0];if (var_88 == 0x0) {if (var_68 == 0x0) {var_68 = var_80;}}else {var_90 = [OpenUDID _getDictFromPasteboard:var_88];var_98 = [var_90 objectForKey:@"OpenUDID"];if (var_98 == 0x0) {if (var_68 == 0x0) {var_68 = var_80;}}else {[var_70 setObject:[NSNumber numberWithInt:[[var_70 valueForKey:var_98] intValue] + 0x1] forKey:var_98];}var_A8 = [var_90 objectForKey:@"OpenUDID_appUID"];if ((var_A8 != 0x0) && (([var_A8 isEqualToString:var_30] & 0x1) != 0x0)) {var_48 = var_80;if ((var_51 & 0x1) != 0x0) {var_50 = [var_90 objectForKey:@"OpenUDID_optOutTS"];var_51 = (var_50 != 0x0 ? 0x1 : 0x0) & 0x1;}}}}var_B0 = [var_70 keysSortedByValueUsingSelector:@selector(compare:)];if ((var_B0 != 0x0) && ([var_B0 count] > 0x0)) {var_118 = [var_B0 lastObject];}else {var_118 = 0x0;}var_B8 = var_118;if (var_40 == 0x0) {if (var_B8 == 0x0) {var_40 = [OpenUDID _generateFreshOpenUDID];}else {var_40 = var_B8;}if (var_60 == 0x0) {var_60 = [NSMutableDictionary dictionaryWithCapacity:0x4];[var_60 setObject:var_40 forKey:@"OpenUDID"];[var_60 setObject:var_30 forKey:@"OpenUDID_appUID"];[var_60 setObject:[NSDate date] forKey:@"OpenUDID_createdTS"];if ((var_51 & 0x1) != 0x0) {[var_60 setObject:var_50 forKey:@"OpenUDID_createdTS"];}var_52 = 0x1;}}else {if ((var_B8 != 0x0) && (([var_B8 isEqualToString:var_40] & 0x1) == 0x0)) {var_53 = 0x1;}}if ((var_68 != 0x0) && (((var_48 == 0x0) || (([var_68 isEqualToString:var_48] & 0x1) != 0x0)))) {var_C0 = [UIPasteboard pasteboardWithName:var_68 create:0x1];[var_C0 setPersistent:0x1];if (var_60 != 0x0) {[var_60 setObject:var_68 forKey:@"OpenUDID_slot"];var_52 = 0x1;}if ((var_40 != 0x0) && (var_60 != 0x0)) {[OpenUDID _setDict:var_60 forPasteboard:var_C0];}}if ((var_60 != 0x0) && ((var_52 & 0x1) != 0x0)) {[var_28 setObject:var_60 forKey:@"OpenUDID"];}if ((var_51 & 0x1) != 0x0) {if (var_20 != 0x0) {*var_20 = [NSError errorWithDomain:@"org.OpenUDID" code:0x1 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:[NSString stringWithFormat:@"Application with unique id %@ is opted-out from OpenUDID as of %@", var_30, var_50], @"description", 0x0]];}*_kOpenUDIDSessionCache = [[NSString stringWithFormat:@"%040x", 0x0] retain];var_8 = *_kOpenUDIDSessionCache;}else {if (var_20 != 0x0) {if ((var_53 & 0x1) != 0x0) {*var_20 = [NSError errorWithDomain:@"org.OpenUDID" code:0x2 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:@"Found a discrepancy between stored OpenUDID (reliable) and redundant copies; one of the apps on the device is most likely corrupting the OpenUDID protocol", @"description", 0x0]];}else {*var_20 = [NSError errorWithDomain:@"org.OpenUDID" code:0x0 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:@"OpenUDID succesfully retrieved", @"description", 0x0]];}}*_kOpenUDIDSessionCache = [var_40 retain];var_8 = *_kOpenUDIDSessionCache;}}rax = var_8;return rax;
}

这个在2013年作者就deprecated了。

我的运行环境：xcode10 ,ios12.1

疑问1：kOpenUDIDAppUIDKey = @"OpenUDID_appUID" ，注释是：在pastebins中唯一标识此应用程序，但是它直接取值NSUserDefaults的一级，但没地方存！！每次运行都是空值，它是怎么判断的？320多行创建的 390多行才使用

疑问2：本地副本意思是NSUserDefaults存 kOpenUDIDKey = @"OpenUDID"的key对应的字典里面也有一个

疑问3：然后进入循环，kOpenUDIDRedundancySlots = 100 ,100遍，只有第一遍有值，其他99遍都啥都没赋值，也不知道有啥用,

kOpenUDIDSlotPBPrefix = @"org.OpenUDID.slot."这个标记了循环的顺序。

疑问4：从剪贴板获取[UIPasteboard pasteboardWithName:slotPBid（org.OpenUDID.slot.0） create:NO]，的值是

{

OpenUDID = 02f268b1add131a529845a3a1886b8c6df279e89;//uuidcreate后做md5

"OpenUDID_appUID" = "C3FD02F2-FA71-4732-A674-DEB1DF338FE6";、//系统uuidcreate创建

"OpenUDID_createdTS" = "2020-03-02 13:18:01 +0000";时间

"OpenUDID_slot" = "org.OpenUDID.slot.0";创建顺序

}这个是卸载重装也会有的

剪贴板的key是org.OpenUDID.slot.0类似

上面这个字典NSUserDefaults也存一遍，key是kOpenUDIDKey = @"OpenUDID"

系统还原后看循环：循环里面一个都不走，然后通过[OpenUDID _generateFreshOpenUDID]创建第一个值，重新走一遍这个方法CFUUIDCreateString md5，作为openudid, 然后320行那里的创建的作为kOpenUDIDAppUIDKey，

存剪贴板本地

{

OpenUDID = 958a60666597945dabf734d1e8767bbcb7d68708;

"OpenUDID_appUID" = "053E23DB-D3A0-42B0-B640-FF5EA911B9DA";

"OpenUDID_createdTS" = "2020-03-03 03:19:16 +0000";

"OpenUDID_slot" = "org.OpenUDID.slot.0";

}

完成

以下是+[UTDevice utdid]如何实现的一些探索

void * +[UTDevice utdid](void * self, void * _cmd) {var_-96 = 0x0;var_-88 = &var_-96;var_-176 = &var_-56;var_-184 = [UTDIDOpenUDID value];*var_-176 = [var_-184 retain];var_-192 = &var_-96 + 0x28;objc_storeStrong(&var_-16, &var_-152);if (*_utdid.onceToken != 0xffffffffffffffff) {dispatch_once(_utdid.onceToken, 0x0);}var_-16 = 0x0;objc_storeStrong(&var_-16, 0x0);if (*(var_-88 + 0x28) == 0x0) {var_-200 = @"ffffffffffffffffffffffff";}else {var_-200 = *(var_-88 + 0x28);}var_-24 = [var_-200 retain];_Block_object_dispose(&var_-96, 0x8);rdi = var_-192;objc_storeStrong(rdi, 0x0);var_-212 = 0x1;if ((0x0 & 0x1) == 0x0) {rcx = var_-212 - 0x2;var_-216 = var_-212;if (rcx != 0x0) {rax = var_-216 - 0x3;if (rax != 0x0) {rax = [var_-24 autorelease];}else {*(rdi + 0x28) = 0x0;objc_storeStrong(rdi + 0x28, *0x28);rax = objc_storeStrong(0x28, 0x0);}}else {var_-24 = [@"eeeeeeeeeeeeeeeeeeeeeeee" retain];rax = [var_-24 autorelease];}}else {rax = objc_exception_rethrow();}return rax;
}

这么一堆就一句有用 [UTDIDOpenUDID value];

void * +[UTDIDOpenUDID value](void * self, void * _cmd) {rax = [UTDIDOpenUDID valueWithError:0x0];return rax;
}

下一个方法

void * +[UTDIDOpenUDID valueWithError:](void * self, void * _cmd, void * * arg2) {var_-16 = self;var_-32 = arg2;if (*_kUTDIDOpenUDIDSessionCache != 0x0) {if (var_-32 != 0x0) {*var_-32 = [NSError errorWithDomain:@"com.UTDID" code:0x0 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:@"OpenUDID in cache from first call", @"description", 0x0]];}var_-8 = *_kUTDIDOpenUDIDSessionCache;}else {var_-40 = [NSUserDefaults standardUserDefaults];var_-48 = 0x0;var_-56 = 0x0;var_-64 = 0x0;var_-65 = 0x0;var_-66 = 0x0;var_-67 = 0x0;var_-80 = [var_-40 objectForKey:@"UTDID"];if (([var_-80 isKindOfClass:[NSDictionary class]] & 0x1) == 0x0) {var_-88 = 0x0;var_-96 = [NSMutableDictionary dictionaryWithCapacity:0x64];var_-104 = [var_-16 appUid];for (var_-108 = 0x0; var_-108 < 0x64; var_-108 = var_-108 + 0x1) {var_-248 = [NSString stringWithFormat:@"%@%d", @"com.UTDID.", var_-108];var_-120 = var_-248;var_-272 = [UIPasteboard pasteboardWithName:var_-248 create:0x0];var_-144 = var_-272;if (var_-144 == 0x0) {if (var_-88 == 0x0) {var_-88 = var_-120;}}else {var_-280 = [UTDIDOpenUDID _getDictFromPasteboard:var_-144];var_-152 = var_-280;var_-288 = [var_-280 objectForKey:@"UTDID"];var_-160 = var_-288;if (var_-160 == 0x0) {if (var_-88 == 0x0) {var_-88 = var_-120;}}else {var_-296 = [var_-96 valueForKey:var_-160];var_-300 = [var_-296 intValue];var_-312 = var_-96;var_-328 = [NSNumber numberWithInt:var_-300 + 0x1];[var_-312 setObject:var_-328 forKey:var_-160];}var_-336 = [var_-152 objectForKey:@"UTDID_appUID"];var_-176 = var_-336;if (var_-176 != 0x0) {var_-337 = [var_-176 isEqualToString:var_-104];if ((var_-337 & 0x1) != 0x0) {var_-56 = var_-120;if ((var_-65 & 0x1) != 0x0) {var_-352 = [var_-152 objectForKey:@"UTDID_optOutTS"];var_-64 = var_-352;var_-65 = (var_-64 != 0x0 ? 0x1 : 0x0) & 0x1;}}}}}var_-192 = [var_-96 keysSortedByValueUsingSelector:@selector(compare:)];if ((var_-192 != 0x0) && ([var_-192 count] > 0x0)) {var_-360 = [var_-192 lastObject];}else {var_-360 = 0x0;}var_-200 = var_-360;if (var_-48 == 0x0) {if (var_-200 == 0x0) {var_-48 = [[[UTDIDMain alloc] init] value];}else {var_-48 = var_-200;}if (var_-80 == 0x0) {var_-80 = [NSMutableDictionary dictionaryWithCapacity:0x4];[var_-80 setObject:var_-48 forKey:@"UTDID"];[var_-80 setObject:var_-104 forKey:@"UTDID_appUID"];[var_-80 setObject:[NSDate date] forKey:@"UTDID_createdTS"];if ((var_-65 & 0x1) != 0x0) {[var_-80 setObject:var_-64 forKey:@"UTDID_createdTS"];}var_-66 = 0x1;}}else {if ((var_-200 != 0x0) && (([var_-200 isEqualToString:var_-48] & 0x1) == 0x0)) {var_-67 = 0x1;}}if ((var_-88 != 0x0) && (((var_-56 == 0x0) || (([var_-88 isEqualToString:var_-56] & 0x1) != 0x0)))) {var_-208 = [UIPasteboard pasteboardWithName:var_-88 create:0x1];[var_-208 setPersistent:0x1];if (var_-80 != 0x0) {[var_-80 setObject:var_-88 forKey:@"UTDID_slot"];var_-66 = 0x1;}if ((var_-48 != 0x0) && (var_-80 != 0x0)) {[UTDIDOpenUDID _setDict:var_-80 forPasteboard:var_-208];}}if ((var_-80 != 0x0) && ((var_-66 & 0x1) != 0x0)) {[var_-40 setObject:var_-80 forKey:@"UTDID"];}if ((var_-65 & 0x1) != 0x0) {if (var_-32 != 0x0) {*var_-32 = [NSError errorWithDomain:@"com.UTDID" code:0x1 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:[NSString stringWithFormat:@"Application with unique id %@ is opted-out from OpenUDID as of %@", var_-104, var_-64], @"description", 0x0]];}*_kUTDIDOpenUDIDSessionCache = [[NSString stringWithFormat:@"%040x", 0x0] retain];var_-8 = *_kUTDIDOpenUDIDSessionCache;}else {if (var_-32 != 0x0) {if ((var_-67 & 0x1) != 0x0) {*var_-32 = [NSError errorWithDomain:@"com.UTDID" code:0x2 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:@"Found a discrepancy between stored OpenUDID (reliable) and redundant copies; one of the apps on the device is most likely corrupting the OpenUDID protocol", @"description", 0x0]];}else {*var_-32 = [NSError errorWithDomain:@"com.UTDID" code:0x0 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:@"OpenUDID succesfully retrieved", @"description", 0x0]];}}*_kUTDIDOpenUDIDSessionCache = [var_-48 retain];var_-8 = *_kUTDIDOpenUDIDSessionCache;}}else {var_-80 = [NSMutableDictionary dictionaryWithDictionary:var_-80];var_-48 = [var_-80 objectForKey:@"UTDID"];var_-56 = [var_-80 objectForKey:@"UTDID_slot"];var_-64 = [var_-80 objectForKey:@"UTDID_optOutTS"];var_-65 = (var_-64 != 0x0 ? 0x1 : 0x0) & 0x1;if (0x0 != var_-48) {*_kUTDIDOpenUDIDSessionCache = [var_-48 retain];var_-8 = *_kUTDIDOpenUDIDSessionCache;}else {var_-88 = 0x0;var_-96 = [NSMutableDictionary dictionaryWithCapacity:0x64];var_-104 = [var_-16 appUid];for (var_-108 = 0x0; var_-108 < 0x64; var_-108 = var_-108 + 0x1) {var_-248 = [NSString stringWithFormat:@"%@%d", @"com.UTDID.", var_-108];var_-120 = var_-248;var_-272 = [UIPasteboard pasteboardWithName:var_-248 create:0x0];var_-144 = var_-272;if (var_-144 == 0x0) {if (var_-88 == 0x0) {var_-88 = var_-120;}}else {var_-280 = [UTDIDOpenUDID _getDictFromPasteboard:var_-144];var_-152 = var_-280;var_-288 = [var_-280 objectForKey:@"UTDID"];var_-160 = var_-288;if (var_-160 == 0x0) {if (var_-88 == 0x0) {var_-88 = var_-120;}}else {var_-296 = [var_-96 valueForKey:var_-160];var_-300 = [var_-296 intValue];var_-312 = var_-96;var_-328 = [NSNumber numberWithInt:var_-300 + 0x1];[var_-312 setObject:var_-328 forKey:var_-160];}var_-336 = [var_-152 objectForKey:@"UTDID_appUID"];var_-176 = var_-336;if (var_-176 != 0x0) {var_-337 = [var_-176 isEqualToString:var_-104];if ((var_-337 & 0x1) != 0x0) {var_-56 = var_-120;if ((var_-65 & 0x1) != 0x0) {var_-352 = [var_-152 objectForKey:@"UTDID_optOutTS"];var_-64 = var_-352;var_-65 = (var_-64 != 0x0 ? 0x1 : 0x0) & 0x1;}}}}}var_-192 = [var_-96 keysSortedByValueUsingSelector:@selector(compare:)];if ((var_-192 != 0x0) && ([var_-192 count] > 0x0)) {var_-360 = [var_-192 lastObject];}else {var_-360 = 0x0;}var_-200 = var_-360;if (var_-48 == 0x0) {if (var_-200 == 0x0) {var_-48 = [[[UTDIDMain alloc] init] value];}else {var_-48 = var_-200;}if (var_-80 == 0x0) {var_-80 = [NSMutableDictionary dictionaryWithCapacity:0x4];[var_-80 setObject:var_-48 forKey:@"UTDID"];[var_-80 setObject:var_-104 forKey:@"UTDID_appUID"];[var_-80 setObject:[NSDate date] forKey:@"UTDID_createdTS"];if ((var_-65 & 0x1) != 0x0) {[var_-80 setObject:var_-64 forKey:@"UTDID_createdTS"];}var_-66 = 0x1;}}else {if ((var_-200 != 0x0) && (([var_-200 isEqualToString:var_-48] & 0x1) == 0x0)) {var_-67 = 0x1;}}if ((var_-88 != 0x0) && (((var_-56 == 0x0) || (([var_-88 isEqualToString:var_-56] & 0x1) != 0x0)))) {var_-208 = [UIPasteboard pasteboardWithName:var_-88 create:0x1];[var_-208 setPersistent:0x1];if (var_-80 != 0x0) {[var_-80 setObject:var_-88 forKey:@"UTDID_slot"];var_-66 = 0x1;}if ((var_-48 != 0x0) && (var_-80 != 0x0)) {[UTDIDOpenUDID _setDict:var_-80 forPasteboard:var_-208];}}if ((var_-80 != 0x0) && ((var_-66 & 0x1) != 0x0)) {[var_-40 setObject:var_-80 forKey:@"UTDID"];}if ((var_-65 & 0x1) != 0x0) {if (var_-32 != 0x0) {*var_-32 = [NSError errorWithDomain:@"com.UTDID" code:0x1 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:[NSString stringWithFormat:@"Application with unique id %@ is opted-out from OpenUDID as of %@", var_-104, var_-64], @"description", 0x0]];}*_kUTDIDOpenUDIDSessionCache = [[NSString stringWithFormat:@"%040x", 0x0] retain];var_-8 = *_kUTDIDOpenUDIDSessionCache;}else {if (var_-32 != 0x0) {if ((var_-67 & 0x1) != 0x0) {*var_-32 = [NSError errorWithDomain:@"com.UTDID" code:0x2 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:@"Found a discrepancy between stored OpenUDID (reliable) and redundant copies; one of the apps on the device is most likely corrupting the OpenUDID protocol", @"description", 0x0]];}else {*var_-32 = [NSError errorWithDomain:@"com.UTDID" code:0x0 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:@"OpenUDID succesfully retrieved", @"description", 0x0]];}}*_kUTDIDOpenUDIDSessionCache = [var_-48 retain];var_-8 = *_kUTDIDOpenUDIDSessionCache;}}}}rax = var_-8;return rax;
}

1 & 0x1 = 1;

不是字典时

void * +[UTDIDOpenUDID appUid](void * self, void * _cmd) {var_20 = [[NSUserDefaults standardUserDefaults] objectForKey:@"UTDID_appUID"];if (var_20 == 0x0) {var_28 = CFUUIDCreate(0x0);var_20 = CFUUIDCreateString(0x0, var_28);CFRelease(var_28);[var_20 autorelease];}rax = var_20;return rax;
}function CFUUIDCreate {rax = _CFUUIDCreate(rdi);return rax;
}function CFUUIDCreateString {rax = _CFUUIDCreateString(rdi, rsi);return rax;
}

上面这是系统提供的生成uuid的c语言方法

[UIPasteboard pasteboardWithName:var_F8 create:0x0]; 这也是系统方法

void * +[UTDIDOpenUDID _getDictFromPasteboard:](void * self, void * _cmd, void * arg2) {var_20 = [arg2 dataForPasteboardType:@"com.UTDID"];if (var_20 != 0x0) {var_40 = [NSKeyedUnarchiver unarchiveObjectWithData:var_20];var_20 = var_40;}if ((var_20 != 0x0) && (([var_20 isKindOfClass:[NSDictionary class]] & 0x1) == 0x0)) {var_58 = 0x0;}else {var_58 = var_20;}rax = [NSMutableDictionary dictionaryWithDictionary:var_58];return rax;
}

把上面代码循环64遍后，然后又出来下面的一个方法

void * -[UTDIDMain value](void * self, void * _cmd) {var_10 = self;rax = [@"S_UTDID_OPT_LOCK" retain];var_98 = rax;objc_sync_enter(rax);if (0x0 == *_s_utdid) goto loc_100e18800;loc_100e187e1:var_8 = [*_s_utdid retain];goto loc_100e18d83;loc_100e18d83:objc_sync_exit(var_98);[var_98 release];rax = [var_8 autorelease];return rax;loc_100e18800:[var_10 preInit];var_2D = 0x1;var_2E = 0x0;var_A8 = [NSUserDefaults standardUserDefaults];rax = [var_A8 retain];var_38 = rax;var_B8 = [rax objectForKey:@"PK_455469921"];var_40 = [var_B8 retain];var_49 = 0x0;var_B9 = 0x1;if (0x0 != var_40) {var_C8 = [var_10->mUtdidHelper dePack:var_40];rax = [var_C8 retain];var_48 = rax;var_49 = 0x1;var_B9 = 0x0 == rax ? 0x1 : 0x0;}var_C9 = var_B9;if ((var_49 & 0x1) != 0x0) {[var_48 release];}if ((var_C9 & 0x1) != 0x0) goto loc_100e1892a;loc_100e18be6:var_88 = 0x0;var_130 = [var_10->mUtdidHelper dePack:var_40];var_90 = [var_130 retain];if (0x0 == var_90) {var_8 = [@"dddddddddddddddddddddddd" retain];}else {if ((var_2E & 0x1) != 0x0) {[var_10->mDevicePersistentConfig setObject:var_40 forKey:@"c"];[var_10->mDevicePersistentConfig commit];}var_138 = [UTDIDTypeConvert NSData2Base64:var_90];var_88 = [var_138 retain];[0x0 release];objc_storeStrong(_s_utdid, var_88);var_8 = [var_88 retain];}objc_storeStrong(&var_90, 0x0);objc_storeStrong(&var_88, 0x0);goto loc_100e18d63;loc_100e18d63:objc_storeStrong(&var_40, 0x0);objc_storeStrong(&var_38, 0x0);goto loc_100e18d83;loc_100e1892a:var_D8 = [var_10->mDevicePersistentConfig objectForKey:@"c"];rax = [var_D8 retain];rdi = var_40;var_40 = rax;[rdi release];var_59 = 0x0;var_D9 = 0x1;if (0x0 != var_40) {var_E8 = [var_10->mUtdidHelper dePack:var_40];rax = [var_E8 retain];var_58 = rax;var_59 = 0x1;var_D9 = 0x0 == rax ? 0x1 : 0x0;}var_E9 = var_D9;if ((var_59 & 0x1) != 0x0) {[var_58 release];}if ((var_E9 & 0x1) != 0x0) goto loc_100e18a0d;loc_100e18bcc:var_2D = 0x0;goto loc_100e18be6;loc_100e18a0d:var_2E = 0x1;var_F8 = [var_10->mUIPasteBoard dataForPasteboardType:@"K_1427156438"];rax = [var_F8 retain];rdi = var_40;var_40 = rax;[rdi release];var_69 = 0x0;var_F9 = 0x1;if (0x0 != var_40) {var_108 = [var_10->mUtdidHelper dePack:var_40];rax = [var_108 retain];var_68 = rax;var_69 = 0x1;var_F9 = 0x0 == rax ? 0x1 : 0x0;}var_109 = var_F9;if ((var_69 & 0x1) != 0x0) {[var_68 release];}if ((var_109 & 0x1) != 0x0) goto loc_100e18af7;loc_100e18bc6:var_2D = 0x0;goto loc_100e18be6;loc_100e18af7:var_118 = [var_10 generateUtdidAndSave];rax = [var_118 retain];var_78 = rax;var_120 = [UTDIDTypeConvert NSData2Base64:rax];var_80 = [var_120 retain];objc_storeStrong(_s_utdid, var_80);var_8 = [var_80 retain];objc_storeStrong(&var_80, 0x0);objc_storeStrong(&var_78, 0x0);goto loc_100e18d63;
}

void -[UTDIDMain preInit](void * self, void * _cmd) {var_-8 = self;if (0x0 == var_-8->mUIPasteBoard) {var_-8->mDevicePersistentConfig = [[UTDIDPersistentConf initWithIdentifier:@"Alvin"] retain];[var_-8->mDevicePersistentConfig release];var_-8->mUIPasteBoard = [[UIPasteboard pasteboardWithName:@"D_518825059" create:0x1] retain];[var_-8->mUIPasteBoard release];[var_-8->mUIPasteBoard setPersistent:0x1];var_-8->mUtdidHelper = [[UTDIDHelper alloc] init];[var_-8->mUtdidHelper release];}return;
}

void * +[UTDIDPersistentConf initWithIdentifier:](void * self, void * _cmd, void * arg2) {objc_storeStrong(&var_-32, arg2);if (0x0 != 0x0) {var_-40 = [[UTDIDPersistentConf alloc] init];[var_-40 create:0x0];var_-8 = [var_-40 retain];objc_storeStrong(&var_-40, 0x0);}else {var_-8 = 0x0;}var_-32 = 0x0;objc_storeStrong(&var_-32, 0x0);rax = [var_-8 autorelease];return rax;
}

void -[UTDIDPersistentConf create:](void * self, void * _cmd, void * arg2) {rax = &var_-24;var_-24 = 0x0;objc_storeStrong(rax, arg2);*(int8_t *)&self->mIsModified = 0x0;objc_storeStrong(&self->mIdentifier, var_-24);self->mKeyChainWrapper = [[UTDIDKeychainItemWrapper alloc] initWithIdentifier:self->mIdentifier accessGroup:0x0];[self->mKeyChainWrapper release];self->mPersistentFile = [[UTDIDPersistentFile createWithFile:@".UTSystemConfig" and:var_-24] retain];[self->mPersistentFile release];[self initData];objc_storeStrong(&var_-24, 0x0);return;
}

void * +[UTDIDPersistentFile createWithFile:and:](void * self, void * _cmd, void * arg2, void * arg3) {objc_storeStrong(&var_-32, arg2);objc_storeStrong(&var_-40, arg3);if ((([UTDIDStringUtils isEmpty:0x0] & 0x1) == 0x0) && (([UTDIDStringUtils isEmpty:0x0] & 0x1) == 0x0)) {var_-48 = [[UTDIDPersistentFile alloc] init];[var_-48 create:0x0 and:0x0];var_-8 = [var_-48 retain];objc_storeStrong(&var_-48, 0x0);}else {var_-8 = 0x0;}var_-32 = 0x0;var_-40 = 0x0;objc_storeStrong(&var_-40, 0x0);objc_storeStrong(&var_-32, 0x0);rax = [var_-8 autorelease];return rax;
}

存钥匙串

void * -[UTDIDHelper init](void * self, void * _cmd) {var_-8 = 0x0;rax = [[&var_-32 super] init];rsi = &var_-8;var_-8 = rax;objc_storeStrong(rsi, rax);if (var_-8 != 0x0) {rax = [@"iIAjd0narA7LwEsUqYLvMIF8n5pXBlbuYLN61VA4APYahCvFrIXj7ZsDBeRfDgqViDdsWh3YUNbqoxm7pAEm6COKYnb9KimZqJdagZHulvlr6HI6OEIqkOObZfcmWjQ1KEa1jUt9AlVVtbSXuargyTdodgA6mfJQ9RATlM5ousF8Bhh3K6WgfzB47KBqjSJ6sS1lfba90OZ9HzaW0n8YKWck3mz1WX4t8cb2oC0V5LpdTi5wNLhBqFHzRnwChbYf" dataUsingEncoding:0x4];rax = [rax retain];var_-8->mAESKey = [[UTDIDTypeConvert NSData2Base64:rax] retain];[var_-8->mAESKey release];[rax release];}var_-72 = [var_-8 retain];objc_storeStrong(&var_-8, 0x0);rax = var_-72;return rax;
}

上面是aes的秘钥

void * -[UTDIDHelper dePack:](void * self, void * _cmd, void * arg2) {objc_storeStrong(&var_-128, arg2);var_-136 = [[UTDIDAES AES256DecryptWithKey:0x0 forKey:self->mAESKey] retain];if ([var_-136 length] == 0x16) {var_-160 = [[UTDIDBaseUtils platform] retain];if (0x0 != var_-160) {var_-168 = [[UTDIDIntUtils bytes:[UTDIDStringUtils hashCode:var_-160]] retain];var_-192 = [[var_-136 subdataWithRange:0x0] retain];var_-200 = [[UTDIDIntUtils bytes:0x0] retain];if ((([var_-200 isEqualToData:var_-192] & 0x1) == 0x0) && (([var_-168 isEqualToData:var_-192] & 0x1) == 0x0)) {var_-104 = 0x0;var_-204 = 0x1;}else {var_-204 = 0x0;}objc_storeStrong(&var_-200, 0x0);objc_storeStrong(&var_-192, 0x0);objc_storeStrong(&var_-168, 0x0);if (var_-204 == 0x0) {var_-232 = [[var_-136 subdataWithRange:0x4] retain];var_-104 = [var_-232 retain];objc_storeStrong(&var_-232, 0x0);}}else {var_-232 = [[var_-136 subdataWithRange:0x4] retain];var_-104 = [var_-232 retain];objc_storeStrong(&var_-232, 0x0);}objc_storeStrong(&var_-160, 0x0);}else {var_-104 = 0x0;}var_-128 = 0x0;objc_storeStrong(&var_-136, 0x0);objc_storeStrong(&var_-128, 0x0);rax = [var_-104 autorelease];return rax;
}

void * +[UTDIDBaseUtils platform](void * self, void * _cmd) {sysctlbyname("hw.machine", 0x0, &var_-32, 0x0, 0x0);var_-40 = malloc(var_-32);if (var_-40 != 0x0) {sysctlbyname("hw.machine", var_-40, &var_-32, 0x0, 0x0);var_-48 = [[NSString stringWithCString:var_-40 encoding:0x4] retain];free(var_-40);var_-8 = [var_-48 retain];objc_storeStrong(&var_-48, 0x0);}else {var_-8 = 0x0;}rax = [var_-8 autorelease];return rax;
}

void * +[UTDIDIntUtils bytes:](void * self, void * _cmd, unsigned int arg2) {var_-24 = var_-17;rax = [NSData dataWithBytes:&var_-24 length:0x4];rax = [rax retain];var_-32 = rax;var_-56 = [rax retain];objc_storeStrong(&var_-32, 0x0);rax = [var_-56 autorelease];return rax;
}

int +[UTDIDStringUtils hashCode:](void * self, void * _cmd, void * arg2) {objc_storeStrong(&var_-32, arg2);if (0x0 == 0x0) {var_-4 = 0x0;}else {var_-40 = 0x0;if ((var_-40 == 0x0) && ([0x0 length] > 0x0)) {var_-48 = [objc_retainAutorelease(0x0) UTF8String];var_-52 = 0x0;while (sign_extend_64(var_-52) < [0x0 length]) {var_-40 = var_-40 * 0x1f + sign_extend_64(*(int8_t *)(var_-48 + sign_extend_64(var_-52)));var_-52 = var_-52 + 0x1;}}var_-4 = var_-40;}var_-32 = 0x0;objc_storeStrong(&var_-32, 0x0);rax = var_-4;return rax;
}

void * +[UTDIDTypeConvert NSData2Base64:](void * self, void * _cmd, void * arg2) {objc_storeStrong(&var_-24, arg2);var_-28 = 0x0;var_-40 = [UTDIDTypeConvert newBase64Encode:[objc_retainAutorelease(0x0) bytes] :[0x0 length] :0x1 :&var_-28];var_-48 = 0x0;if (var_-40 != 0x0) {if (var_-28 > 0x0) {var_-48 = [[NSString alloc] initWithBytes:var_-40 length:var_-28 encoding:0x1];[0x0 release];}free(var_-40);}var_-24 = 0x0;var_-88 = [var_-48 retain];objc_storeStrong(&var_-48, 0x0);objc_storeStrong(&var_-24, 0x0);rax = [var_-88 autorelease];return rax;
}

char * +[UTDIDTypeConvert newBase64Encode::::](void * self, void * _cmd, void * arg2, unsigned int arg3, bool arg4, unsigned int * arg5) {r8 = 0x0;var_-36 = arg3;var_-37 = arg4 & 0x1;var_-48 = arg5;var_-56 = arg2;var_-92 = var_-36 / 0x3;if (var_-36 % 0x3 != 0x0) {r8 = 0x1;}var_-60 = var_-92 + r8 << 0x2;if ((var_-37 & 0x1) != 0x0) {var_-60 = (var_-60 >> 0x6 << 0x1) + var_-60;}var_-72 = malloc(var_-60 + 0x1);if (var_-72 == 0x0) {var_-8 = 0x0;}else {var_-76 = 0x0;var_-80 = 0x0;if ((var_-37 & 0x1) != 0x0) {var_-96 = 0x30;}else {var_-96 = var_-36;}var_-84 = var_-96;var_-88 = var_-84;do {if (var_-88 > var_-36) {var_-88 = var_-36;}while (var_-76 + 0x3 - 0x1 < var_-88) {*(int8_t *)(var_-72 + var_-80) = *(int8_t *)("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" + sign_extend_64(SAR((*(int8_t *)(var_-56 + var_-76) & 0xff & 0xfc), 0x2)));*(int8_t *)(var_-72 + var_-80 + 0x1) = *(int8_t *)("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" + sign_extend_64((*(int8_t *)(var_-56 + var_-76) & 0xff & 0x3) << 0x4 | SAR((*(int8_t *)(var_-56 + var_-76 + 0x1) & 0xff & 0xf0), 0x4)));*(int8_t *)(var_-72 + var_-80 + 0x2) = *(int8_t *)("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" + sign_extend_64((*(int8_t *)(var_-56 + var_-76 + 0x1) & 0xff & 0xf) << 0x2 | SAR((*(int8_t *)(var_-56 + var_-76 + 0x2) & 0xff & 0xc0), 0x6)));rcx = var_-80 + 0x3;var_-80 = rcx + 0x1;*(int8_t *)(var_-72 + rcx) = *(int8_t *)("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" + sign_extend_64(*(int8_t *)(var_-56 + var_-76 + 0x2) & 0xff & 0x3f));var_-76 = var_-76 + 0x3;}if (var_-88 == var_-36) {break;}*(int8_t *)(var_-72 + var_-80) = 0xd;rax = var_-80 + 0x1;var_-80 = rax + 0x1;*(int8_t *)(var_-72 + rax) = 0xa;var_-88 = var_-84 + var_-88;} while (true);if (var_-76 + 0x1 < var_-36) {*(int8_t *)(var_-72 + var_-80) = *(int8_t *)("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" + sign_extend_64(SAR((*(int8_t *)(var_-56 + var_-76) & 0xff & 0xfc), 0x2)));*(int8_t *)(var_-72 + var_-80 + 0x1) = *(int8_t *)("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" + sign_extend_64((*(int8_t *)(var_-56 + var_-76) & 0xff & 0x3) << 0x4 | SAR((*(int8_t *)(var_-56 + var_-76 + 0x1) & 0xff & 0xf0), 0x4)));*(int8_t *)(var_-72 + var_-80 + 0x2) = *(int8_t *)("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" + sign_extend_64((*(int8_t *)(var_-56 + var_-76 + 0x1) & 0xff & 0xf) << 0x2));rcx = var_-80 + 0x3;var_-80 = rcx + 0x1;*(int8_t *)(var_-72 + rcx) = 0x3d;}else {if (var_-76 < var_-36) {*(int8_t *)(var_-72 + var_-80) = *(int8_t *)("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" + sign_extend_64(SAR((*(int8_t *)(var_-56 + var_-76) & 0xff & 0xfc), 0x2)));*(int8_t *)(var_-72 + var_-80 + 0x1) = *(int8_t *)("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" + sign_extend_64((*(int8_t *)(var_-56 + var_-76) & 0xff & 0x3) << 0x4));*(int8_t *)(var_-72 + var_-80 + 0x2) = 0x3d;rcx = var_-80 + 0x3;var_-80 = rcx + 0x1;*(int8_t *)(var_-72 + rcx) = 0x3d;}}*(int8_t *)(var_-72 + var_-80) = 0x0;if (var_-48 != 0x0) {*(int32_t *)var_-48 = var_-80;}var_-8 = var_-72;}rax = var_-8;return rax;
}

void * -[UTDIDMain generateUtdidAndSave](void * self, void * _cmd) {var_10 = self;var_20 = [[UTDIDMain generateUtdid] retain];var_28 = [[var_10->mUtdidHelper pack:var_20] retain];if (([var_10 isUtdidValid:var_28] & 0x1) == 0x0) {var_8 = 0x0;}else {[var_10 saveUtdid:var_28];var_8 = [var_20 retain];}objc_storeStrong(&var_28, 0x0);objc_storeStrong(&var_20, 0x0);rax = [var_8 autorelease];return rax;
}

void * +[UTDIDMain generateUtdid](void * self, void * _cmd) {var_18 = [[NSMutableData alloc] init];rax = [NSDate date];rax = [rax retain];var_74 = intrinsic_cvttsd2si([rax timeIntervalSince1970], xmm0);[rax release];rax = arc4random();var_20 = rax - -(rax * 0x80000001 >> 0x3f);var_21 = 0x3;var_22 = 0x0;var_30 = [[UTDIDMain uniqueGlobalDeviceIdentifier] retain];rax = [UTDIDIntUtils bytes:var_74];rax = [rax retain];var_38 = rax;[var_18 appendData:rax];rax = [UTDIDIntUtils bytes:var_20];rax = [rax retain];rdi = var_38;var_38 = rax;[rdi release];[var_18 appendData:var_38];[var_18 appendBytes:&var_21 length:0x1];[var_18 appendBytes:&var_22 length:0x1];rax = [UTDIDStringUtils hashCode:var_30];rax = [UTDIDIntUtils bytes:rax];rax = [rax retain];rdi = var_38;var_38 = rax;[rdi release];[var_18 appendData:var_38];rax = [UTDIDBaseUtils hmacBase64Value:var_18 key:"d6fc3a4a06adbde89223bvefedc24fecde188aaa9161"];rax = [rax retain];var_48 = rax;rax = [UTDIDStringUtils hashCode:rax];rax = [UTDIDIntUtils bytes:rax];rax = [rax retain];var_58 = rax;[var_18 appendData:rax];var_88 = [var_18 retain];objc_storeStrong(&var_58, 0x0);objc_storeStrong(&var_48, 0x0);objc_storeStrong(&var_38, 0x0);objc_storeStrong(&var_30, 0x0);objc_storeStrong(&var_18, 0x0);rax = [var_88 autorelease];return rax;
}

void * +[UTDIDMain uniqueGlobalDeviceIdentifier](void * self, void * _cmd) {var_20 = CFUUIDCreate(0x0);var_28 = CFUUIDCreateString(0x0, var_20);CFRelease(var_20);if (0x0 == var_28) {var_8 = [[UTDIDBaseUtils uniqueID] retain];}else {var_8 = [var_28 retain];}objc_storeStrong(&var_28, 0x0);rax = [var_8 autorelease];return rax;
}

void * +[UTDIDBaseUtils uniqueID](void * self, void * _cmd) {var_18 = [[NSMutableData alloc] init];rax = arc4random();var_1C = rax - -(rax * 0x80000001 >> 0x3f);rax = arc4random();var_20 = rax - -(rax * 0x80000001 >> 0x3f);rax = arc4random();var_24 = rax - -(rax * 0x80000001 >> 0x3f);rax = arc4random();var_28 = rax - -(rax * 0x80000001 >> 0x3f);[var_18 appendBytes:&var_1C length:0x4];[var_18 appendBytes:&var_20 length:0x4];[var_18 appendBytes:&var_24 length:0x4];[var_18 appendBytes:&var_28 length:0x4];rax = [UTDIDTypeConvert NSData2Base64:var_18];rax = [rax retain];var_30 = rax;var_58 = [rax retain];objc_storeStrong(&var_30, 0x0);objc_storeStrong(&var_18, 0x0);rax = [var_58 autorelease];return rax;
}

(lldb) po [[NSUserDefaults standardUserDefaults]objectForKey:@"UTDID"]

{

UTDID = "Xh+vQjn4X1ADAM3C7AE95sqH";

"UTDID_appUID" = "907097C2-DBDC-466E-94EF-9A75EF4D6433";

"UTDID_createdTS" = "2020-02-27 03:14:51 +0000";

"UTDID_slot" = "com.UTDID.13";

}

如果已经有值执行顺序 +[UTDIDOpenUDID valueWithError:]

[NSUserDefaults standardUserDefaults]; var_-80 = [var_-40 objectForKey:@"UTDID"];

if (([var_-80 isKindOfClass:[NSDictionary class]] & 0x1) == 0x0){

}else{

走这里