jixin_new/shiku_im/data/JXKeyChainStore.m

//
//  JXKeyChainStore.m
//  shiku_im
//
//  Created by IMAC on 2019/8/21.
//  Copyright © 2019 Reese. All rights reserved.
//

#import "JXKeyChainStore.h"
#import <AdSupport/AdSupport.h>
@implementation JXKeyChainStore
+ (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{
    NSMutableDictionary*keychainQuery = [self getKeychainQuery:service];
    SecItemDelete((CFDictionaryRef)keychainQuery);
    [keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data]forKey:(id)kSecValueData];
    SecItemAdd((CFDictionaryRef)keychainQuery,NULL);
}

+ (id)load:(NSString*)service {
    id ret =nil;
    NSMutableDictionary*keychainQuery = [self getKeychainQuery:service];
    [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) {
            NSLog(@"Unarchiveof %@ failed: %@",service, e);
        }@finally{
        }
    }
    if(keyData)
        CFRelease(keyData);
    return ret;
}

+ (void)deleteKeyData:(NSString*)service {
    NSMutableDictionary*keychainQuery = [self getKeychainQuery:service];
    SecItemDelete((CFDictionaryRef)keychainQuery);
}
+ (NSString *)getUUIDByKeyChain{
    // 这个key的前缀最好是你的BundleID
    NSString*strUUID = (NSString*)[JXKeyChainStore load:@"com.shiku.im.push.usernamepassword"];
    //首次执行该方法时，uuid为空
    if([strUUID isEqualToString:@""]|| !strUUID)
    {
        // 获取UUID 这个是要引入<AdSupport/AdSupport.h>的
        strUUID = [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];
        
        if(strUUID.length ==0 || [strUUID isEqualToString:@"00000000-0000-0000-0000-000000000000"])
        {
            //生成一个uuid的方法
            CFUUIDRef uuidRef= CFUUIDCreate(kCFAllocatorDefault);
            strUUID = (NSString*)CFBridgingRelease(CFUUIDCreateString(kCFAllocatorDefault,uuidRef));
            CFRelease(uuidRef);
            CFUUIDRef puuid = CFUUIDCreate(nil);
            CFStringRef uuidString = CFUUIDCreateString(nil, puuid);
            NSString *result = (NSString *)CFBridgingRelease(CFStringCreateCopy(NULL, uuidString));
            NSMutableString *strUUID = result.mutableCopy;
            NSRange range = [strUUID rangeOfString:@"-"];
            while (range.location != NSNotFound) {
                [strUUID deleteCharactersInRange:range];
                range = [strUUID rangeOfString:@"-"];
            }
            NSLog(@"uuid%@",strUUID);
        }
        
        //将该uuid保存到keychain
        [JXKeyChainStore save:@"com.shiku.im.push.usernamepassword" data:strUUID];
    }
    return strUUID;
}

@end