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UIDevice.uniqueIdentifier replace to Application UUID
//
// UDIDReplace.h
//
// Created by ishinao on 12/02/14.
//
// fork from
// https://gist.github.com/1161447
// https://gist.github.com/1743326
//
#import <Foundation/Foundation.h>
#import <Security/Security.h>
@interface UIDevice (UDDIReplace)
-(NSString*)uniqueIdentifier;
-(void)resetUniqueIdentifier;
@end
//
// UDIDReplace.m
//
// Created by ishinao on 12/02/14.
//
// fork from
// https://gist.github.com/1161447
// https://gist.github.com/1743326
//
#import "UDIDReplace.h"
static NSString * const UIDIReplace_Key = @"uniqueInstallationIdentifier";
@implementation UIDevice (UDIDReplace)
-(NSString*)uniqueIdentifier {
NSString *uuidString = nil;
NSDictionary *query = [NSDictionary dictionaryWithObjectsAndKeys:
(id)kSecClassGenericPassword, (id)kSecClass,
UIDIReplace_Key, (id)kSecAttrGeneric,
UIDIReplace_Key, (id)kSecAttrAccount,
[[NSBundle mainBundle] bundleIdentifier],(id)kSecAttrService,
(id)kSecMatchLimitOne, (id)kSecMatchLimit,
(id)kCFBooleanTrue, (id)kSecReturnAttributes,
nil];
NSDictionary *attributes = nil;
OSStatus result = SecItemCopyMatching((CFDictionaryRef)query, (CFTypeRef *)&attributes);
if (result == noErr) {
NSMutableDictionary *valueQuery = [NSMutableDictionary dictionaryWithDictionary:attributes];
[attributes release];
[valueQuery setObject:(id)kSecClassGenericPassword forKey:(id)kSecClass];
[valueQuery setObject:(id)kCFBooleanTrue forKey:(id)kSecReturnData];
NSData *passwordData = nil;
OSStatus result = SecItemCopyMatching((CFDictionaryRef)valueQuery, (CFTypeRef *)&passwordData);
if (result == noErr) {
uuidString = [[[NSString alloc] initWithBytes:[passwordData bytes]
length:[passwordData length]
encoding:NSUTF8StringEncoding] autorelease];
[passwordData release];
}
}
if (uuidString == nil) {
CFUUIDRef uuidRef = CFUUIDCreate(kCFAllocatorDefault);
uuidString = (NSString *)CFUUIDCreateString(kCFAllocatorDefault, uuidRef);
[uuidString autorelease];
CFRelease(uuidRef);
NSMutableDictionary *query = [NSMutableDictionary dictionaryWithObjectsAndKeys:
(id)kSecClassGenericPassword, (id)kSecClass,
UIDIReplace_Key, (id)kSecAttrGeneric,
UIDIReplace_Key, (id)kSecAttrAccount,
[[NSBundle mainBundle] bundleIdentifier], (id)kSecAttrService,
@"", (id)kSecAttrLabel,
@"", (id)kSecAttrDescription,
nil];
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 4) {
[query setObject:(id)kSecAttrAccessibleAfterFirstUnlock forKey:(id)kSecAttrAccessible];
}
[query setObject:[uuidString dataUsingEncoding:NSUTF8StringEncoding] forKey:(id)kSecValueData];
OSStatus result = SecItemAdd((CFDictionaryRef)query, NULL);
if (result != noErr) {
NSLog(@"[ERROR] Couldn't add the Keychain Item. result = %ld query = %@", result, query);
return nil;
}
}
return uuidString;
}
-(void)resetUniqueIdentifier {
NSDictionary *query = [NSDictionary dictionaryWithObjectsAndKeys:
(id)kSecClassGenericPassword, (id)kSecClass,
UIDIReplace_Key, (id)kSecAttrGeneric,
UIDIReplace_Key, (id)kSecAttrAccount,
[[NSBundle mainBundle] bundleIdentifier],(id)kSecAttrService,
nil];
OSStatus result = SecItemDelete((CFDictionaryRef)query);
if (result == noErr) {
NSLog(@"[INFO} Unique Installation Identifier is successfully reset.");
} else if (result == errSecItemNotFound) {
NSLog(@"[INFO} Unique Installation Identifier is successfully reset.");
} else {
NSLog(@"[ERROR] Coudn't delete the Keychain Item. result = %ld query = %@", result, query);
}
}
@end
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