MiMO_iOS/MiMoLive/Classes/Tools/HzUUIDTools.m

//
//  HzUUIDTools.m
//  powerone
//
//  Created by clouder on 2021/7/23.
//  Copyright © 2021 onecloud.ltd. All rights reserved.
//

#import "HzUUIDTools.h"

@implementation HzUUIDTools

+ (NSString *)getDeviceIDInKeychain
{
    NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];//获取app版本信息
    NSString *key = [NSString stringWithFormat:@"%@.uniqueid",[infoDictionary objectForKey:@"CFBundleIdentifier"]];
    NSString *getUDIDInKeychain = (NSString *)[HzUUIDTools load:key];
    MOLogV(@"从keychain中获取到的 UDID_INSTEAD %@",getUDIDInKeychain);
    if (!getUDIDInKeychain ||
        [getUDIDInKeychain isEqualToString:@""] ||
        [getUDIDInKeychain isKindOfClass:[NSNull class]])
    {
        getUDIDInKeychain = [UIDevice currentDevice].identifierForVendor.UUIDString;
        if(getUDIDInKeychain.length == 0 || [getUDIDInKeychain isEqualToString:@"00000000-0000-0000-0000-000000000000"])
        {
            CFUUIDRef uuidRef = CFUUIDCreate(kCFAllocatorDefault);
            CFStringRef uuidString = CFUUIDCreateString(kCFAllocatorDefault, uuidRef);
            getUDIDInKeychain = (NSString *)CFBridgingRelease(CFStringCreateCopy(NULL, uuidString));
            CFRelease(uuidRef);
            CFRelease(uuidString);
            MOLogV(@"\n \n \n _____重新存储 UUID _____\n \n \n  %@",getUDIDInKeychain);
        }
        [HzUUIDTools save:key data:getUDIDInKeychain];
    }
    MOLogV(@"最终 ———— UDID_INSTEAD %@",getUDIDInKeychain);
    return getUDIDInKeychain;
}

+ (NSMutableDictionary *)getKeychainQuery:(NSString *)service
{
    return [NSMutableDictionary dictionaryWithObjectsAndKeys:
            (id)kSecClassGenericPassword,(id)kSecClass,
            service, (id)kSecAttrService,
            service, (id)kSecAttrAccount,
            (id)kSecAttrAccessibleAfterFirstUnlock,(id)kSecAttrAccessible,
            nil];
}

+ (void)save:(NSString *)service data:(id)data
{
    //Get search dictionary
    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
    //Delete old item before add new item
    SecItemDelete((CFDictionaryRef)keychainQuery);
    //Add new object to search dictionary(Attention:the data format)
    [keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data]forKey:(id)kSecValueData];
    //Add item to keychain with the search dictionary
    SecItemAdd((CFDictionaryRef)keychainQuery,NULL);
}

+ (id)load:(NSString *)service
{
    id ret = nil;
    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
    //Configure the search setting
    //Since in our simple case we are expecting only a single attribute to be returned (the password) we can set the attribute kSecReturnData to kCFBooleanTrue
    [keychainQuery setObject:(id)kCFBooleanTrue forKey:(id)kSecReturnData];
    [keychainQuery setObject:(id)kSecMatchLimitOne forKey:(id)kSecMatchLimit];
    CFDataRef keyData = NULL;
    if (SecItemCopyMatching((CFDictionaryRef)keychainQuery, (CFTypeRef *)&keyData) == noErr)
    {
        @try
        {
            ret = [NSKeyedUnarchiver unarchiveObjectWithData:(__bridge NSData *)keyData];
        }
        @catch (NSException *e)
        {
            MOLogE(@"Unarchive of %@ failed: %@", service, e);
        }
        @finally
        {
            
        }
    }
    if (keyData)
    {
        CFRelease(keyData);
    }
    return ret;
}

+ (void)delete:(NSString *)service
{
    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
    SecItemDelete((CFDictionaryRef)keychainQuery);
}

@end