yunjingAndroid/ybvideoandroid/ybvideoios/YBVideo/公共方法类/RKUUIDManager.m

//
//  RKUUIDManager.m
//  RKUUIDTest
//
//  Created by YunBao on 2018/11/27.
//  Copyright © 2018年 Rookie. All rights reserved.
//

#import "RKUUIDManager.h"

@implementation RKUUIDManager

static NSString * const KEY_IN_KEYCHAIN = @"com.sube.dailycast.uuid";

+(void)saveUUID:(NSString *)uuid {
    if (uuid && uuid.length > 0) {
        [self save:KEY_IN_KEYCHAIN data:uuid];
    }
}

+(NSString *)getUUID {
    NSString *uuid = [self load:KEY_IN_KEYCHAIN];
    
    if (!uuid || uuid.length == 0) {
        NSString *uuid = [[NSUUID UUID] UUIDString];
        
        [self saveUUID:uuid];
    }
    return uuid;
}

+(void)deleteUUID {
    [self delete:KEY_IN_KEYCHAIN];
}

#pragma mark - private

+ (NSMutableDictionary *)getKeychainQuery:(NSString *)service {
    return [NSMutableDictionary dictionaryWithObjectsAndKeys:(__bridge_transfer id)kSecClassGenericPassword,(__bridge_transfer id)kSecClass,
            service, (__bridge_transfer id)kSecAttrService,
            service, (__bridge_transfer id)kSecAttrAccount,
            (__bridge_transfer id)kSecAttrAccessibleAfterFirstUnlock, (__bridge_transfer 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((__bridge_retained CFDictionaryRef)keychainQuery);
    //Add new object to search dictionary(Attention:the data format)
    [keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data] forKey:(__bridge_transfer id)kSecValueData];
    //Add item to keychain with the search dictionary
    SecItemAdd((__bridge_retained CFDictionaryRef)keychainQuery, NULL);
}

+ (id)load:(NSString *)service {
    id ret = nil;
    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
    //Configure the search setting
    [keychainQuery setObject:(id)kCFBooleanTrue forKey:(__bridge_transfer id)kSecReturnData];
    [keychainQuery setObject:(__bridge_transfer id)kSecMatchLimitOne forKey:(__bridge_transfer id)kSecMatchLimit];
    CFDataRef keyData = NULL;
    if (SecItemCopyMatching((__bridge_retained CFDictionaryRef)keychainQuery, (CFTypeRef *)&keyData) == noErr) {
        @try {
            ret = [NSKeyedUnarchiver unarchiveObjectWithData:(__bridge_transfer NSData *)keyData];
        } @catch (NSException *e) {
            NSLog(@"Unarchive of %@ failed: %@", service, e);
        } @finally {
        }
    }
    return ret;
}

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

@end