Crash report when user accesses the address book

Question

In my App, Crashlytics is used to gather crash reports from users. Here is one crash report from a user. It is possibly depending on the contacts informations of the user. I can not recreate the crash, as I do not know what's in his/her contacts. Does any one has an idea about this situation?

com.apple.root.default-priority Crashed
0    CoreFoundation  CFStringCreateCopy + 13
1    AppSupport  CPSqliteDatabaseCreateWithPath + 36
2    AppSupport  CPSqliteDatabaseCreateWithPath + 36
3    AppSupport  CPRecordStoreGetDatabase + 16
4    AppSupport  _getReaderConnection + 10
5    AppSupport  CPRecordStoreProcessQueryWithBindBlock + 22
6    AppSupport  CPRecordStoreCopyAllInstancesOfClassWhereWithBindBlock + 98
7    AddressBook     ABCCopyArrayOfAllPeopleInSourceWithSortOrdering + 244
8    SeeYouKee  PhoneNumberInputViewController.m line 538-[PhoneNumberInputViewController dofetchContacts:]
9    AddressBook     __37-[ABTCC accessRequestWithCompletion:]_block_invoke_0 + 26
10   TCC     __TCCAccessRequest_block_invoke_038 + 316
11 ...   libxpc.dylib    _xpc_connection_call_reply + 26
12   libdispatch.dylib   _dispatch_root_queue_drain + 278
13   libdispatch.dylib   _dispatch_worker_thread2 + 92
14   libsystem_c.dylib   _pthread_wqthread + 360

The code for 8 SeeYouKee PhoneNumberInputViewController.m line 538-[PhoneNumberInputViewController dofetchContacts:] is:

NSArray *contactsInAddressBook = CFBridgingRelease(ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering(addressBook, nil, kABPersonSortByLastName));

EDIT 1

-(void)dofetchContacts:(ABAddressBookRef)addressBook{
NSMutableArray *contactMutArr = [NSMutableArray array];
NSMutableString *mStrOfContacts = [NSMutableString string];

NSArray *contactsInAddressBook = CFBridgingRelease(ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering(addressBook, nil, kABPersonSortByLastName));

if (ABPersonGetCompositeNameFormat() == kABPersonCompositeNameFormatLastNameFirst) {

    for (id aPerson in contactsInAddressBook) {

        ABRecordRef person = (__bridge ABRecordRef)(aPerson);

        ABMultiValueRef phoneMultiValue = ABRecordCopyValue(person, kABPersonPhoneProperty);
        ABMultiValueRef emailMultiValue = ABRecordCopyValue(person, kABPersonEmailProperty);
        int countPhone = 0;
        int countEmail = 0;
        NSMutableArray *phoneStrArr;
        NSMutableArray *emailStrArr;

        if (phoneMultiValue != NULL) {
            countPhone = ABMultiValueGetCount(phoneMultiValue);
        }

        if (emailMultiValue != NULL) {
            countEmail = ABMultiValueGetCount(emailMultiValue);
        }

        if (countEmail>0) {
            emailStrArr = [NSMutableArray array];
            for (int i = 0; i < countEmail; i++) {
                CFStringRef anEmailCF = ABMultiValueCopyValueAtIndex(emailMultiValue, i);
                NSString *anEmail = (__bridge NSString *)anEmailCF;
                [emailStrArr addObject:anEmail];
                if (anEmailCF != NULL)CFRelease(anEmailCF);
            }
        }

        if (countPhone > 0) {

            phoneStrArr = [NSMutableArray array];
            for (int i = 0; i < countPhone; i++) {
                CFStringRef anPhoneCF = ABMultiValueCopyValueAtIndex(phoneMultiValue, i);
                NSString *anPhone = (__bridge NSString *)anPhoneCF;
                NSCharacterSet *cs = [[NSCharacterSet characterSetWithCharactersInString:@"0123456789"] invertedSet];
                NSString *anPhonePureNumber = [[anPhone componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];
                [phoneStrArr addObject:anPhonePureNumber];
                if (anPhoneCF != NULL)CFRelease(anPhoneCF);
            }

        }
        //                if (arrRefOfEmails != NULL)CFRelease(arrRefOfEmails);


        CFStringRef lastNameMultiValueCF = ABRecordCopyValue(person, kABPersonLastNameProperty);
        CFStringRef firstNmaeMultiValueCF = ABRecordCopyValue(person, kABPersonFirstNameProperty);
        CFStringRef middleNmaeMultiValueCF = ABRecordCopyValue(person, kABPersonMiddleNameProperty);
        NSString *lastNameMultiValue = (__bridge NSString *)lastNameMultiValueCF;
        NSString *firstNmaeMultiValue = (__bridge NSString *)firstNmaeMultiValueCF;
        NSString *middleNmaeMultiValue = (__bridge NSString *)middleNmaeMultiValueCF;

        NSString *name = [NSString stringWithFormat:@"%@%@%@",(![lastNameMultiValue length])?@"":lastNameMultiValue, (![middleNmaeMultiValue length])?@"":middleNmaeMultiValue, (![firstNmaeMultiValue length])?@"":firstNmaeMultiValue];

        if (lastNameMultiValueCF != NULL)CFRelease(lastNameMultiValueCF);
        if (firstNmaeMultiValueCF != NULL)CFRelease(firstNmaeMultiValueCF);
        if (middleNmaeMultiValueCF != NULL)CFRelease(middleNmaeMultiValueCF);
        CFDataRef anAvatarCF = ABPersonCopyImageDataWithFormat(person, kABPersonImageFormatThumbnail);

        NSData *anAvatarData = (__bridge NSData *)anAvatarCF;
        UIImage *anAvatar = [UIImage imageWithData:anAvatarData];

        if (anAvatarCF != NULL)CFRelease(anAvatarCF);

        NSDictionary *aPersonDict = [NSDictionary dictionaryWithObjectsAndKeys:name, @"name", [phoneStrArr componentsJoinedByString:@"; "], @"phoneNumber", [emailStrArr componentsJoinedByString:@"; "], @"email", anAvatar, @"avatar", nil];
        [contactMutArr addObject:aPersonDict];

        NSLog(@"------phoneStrArr :%@",phoneStrArr);
        NSString *enPhoneNumber = @"";
        if (phoneStrArr) {
            enPhoneNumber = [EncryptWithMD5 encryptWithMD5: [phoneStrArr componentsJoinedByString:@"; "]];
        }
        [mStrOfContacts appendString:enPhoneNumber];
        [mStrOfContacts appendString:@", "];
        if (phoneMultiValue != NULL)CFRelease(phoneMultiValue);
        if (emailMultiValue != NULL)CFRelease(emailMultiValue);

    }

}else{

    for (id aPerson in contactsInAddressBook) {
        ABRecordRef person = (__bridge ABRecordRef)(aPerson);
        ABMultiValueRef phoneMultiValue = ABRecordCopyValue(person, kABPersonPhoneProperty);
        ABMultiValueRef emailMultiValue = ABRecordCopyValue(person, kABPersonEmailProperty);
        int countEmail = 0;
        NSMutableArray *emailStrArr;
        NSMutableArray *phoneStrArr;

        if (emailMultiValue != NULL) {
            countEmail = ABMultiValueGetCount(emailMultiValue);
        }

        if (countEmail>0) {
            emailStrArr = [NSMutableArray array];
            for (int i = 0; i < countEmail; i++) {
                CFStringRef anEmailCF = ABMultiValueCopyValueAtIndex(emailMultiValue, i);
                NSString *anEmail = (__bridge NSString *)anEmailCF;
                [emailStrArr addObject:anEmail];
                if (anEmailCF != NULL)CFRelease(anEmailCF);
            }
        }

        int count = ABMultiValueGetCount(phoneMultiValue);

        if (count > 0) {
            phoneStrArr = [NSMutableArray array];
            for (int i = 0; i < count; i++) {
                CFStringRef anPhoneCF = ABMultiValueCopyValueAtIndex(phoneMultiValue, i);
                NSString *anPhone = (__bridge NSString *)anPhoneCF;
                NSCharacterSet *cs = [[NSCharacterSet characterSetWithCharactersInString:@"0123456789"] invertedSet];
                NSString *anPhonePureNumber = [[anPhone componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];
                [phoneStrArr addObject:anPhonePureNumber];
                if (anPhoneCF != NULL)CFRelease(anPhoneCF);
            }
        }

        CFStringRef lastNameMultiValueCF = ABRecordCopyValue(person, kABPersonLastNameProperty);
        CFStringRef firstNmaeMultiValueCF = ABRecordCopyValue(person, kABPersonFirstNameProperty);
        CFStringRef middleNmaeMultiValueCF = ABRecordCopyValue(person, kABPersonMiddleNameProperty);
        NSString *lastNameMultiValue = (__bridge NSString *)lastNameMultiValueCF;
        NSString *firstNmaeMultiValue = (__bridge NSString *)firstNmaeMultiValueCF;
        NSString *middleNmaeMultiValue = (__bridge NSString *)middleNmaeMultiValueCF;

        NSString *name = [NSString stringWithFormat:@"%@%@%@", (![firstNmaeMultiValue length])?@"":firstNmaeMultiValue, (![middleNmaeMultiValue length])?@"":middleNmaeMultiValue,(![lastNameMultiValue length])?@"":lastNameMultiValue];

        if (lastNameMultiValueCF != NULL)CFRelease(lastNameMultiValueCF);
        if (firstNmaeMultiValueCF != NULL)CFRelease(firstNmaeMultiValueCF);
        if (middleNmaeMultiValueCF != NULL)CFRelease(middleNmaeMultiValueCF);

        CFDataRef anAvatarCF = ABPersonCopyImageDataWithFormat(person, kABPersonImageFormatThumbnail);

        NSData *anAvatarData = (__bridge NSData *)anAvatarCF;
        UIImage *anAvatar = [UIImage imageWithData:anAvatarData];

        if (anAvatarCF != NULL)CFRelease(anAvatarCF);

        NSDictionary *aPersonDict = [NSDictionary dictionaryWithObjectsAndKeys:name, @"name", [phoneStrArr componentsJoinedByString:@"; "], @"phoneNumber",  [emailStrArr componentsJoinedByString:@"; "], @"email", anAvatar, @"avatar", nil];
        [contactMutArr addObject:aPersonDict];

        NSString *enPhoneNumber = [EncryptWithMD5 encryptWithMD5: [phoneStrArr componentsJoinedByString:@"; "]];
        [mStrOfContacts appendString:enPhoneNumber];
        [mStrOfContacts appendString:@", "];

        if (phoneMultiValue != NULL)CFRelease(phoneMultiValue);
        if (emailMultiValue != NULL)CFRelease(emailMultiValue);

    }


}
self.contactArr = [[NSArray alloc] initWithArray: contactMutArr];
strOfContacts = [NSString stringWithString:mStrOfContacts];
}

Edit 2

-(void)beginFetchContacts{
// Request authorization to Address Book
ABAddressBookRef addressBookRef = NULL;

if (ABAddressBookRequestAccessWithCompletion) {
    CFErrorRef *aError=nil;
    addressBookRef = ABAddressBookCreateWithOptions(NULL, aError);

    if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusNotDetermined) {
        ABAddressBookRequestAccessWithCompletion(addressBookRef, ^(bool granted, CFErrorRef error) {
            // First time access has been granted, add the contact
            if (granted) {
                [self dofetchContacts:addressBookRef];
            }else{
                //                [self alertActionSwitchOnTheContactsAccess];
                [self buttonCancelPressed:nil];
            }
        });
    }
    else if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusAuthorized) {
        // The user has previously given access, add the contact
        [self dofetchContacts:addressBookRef];
    }
}else{
    addressBookRef = ABAddressBookCreate();
    [self dofetchContacts:addressBookRef];
}

if (addressBookRef != NULL)CFRelease(addressBookRef);
}

Answer 1

I see that the crashed thread is "com.apple.root.default-priority"

ABAddressBook is NOT thread safe, so if you call it from two different threads, it throws an exception and crashes the app.

even if you always dispatch your calls to DISPATCH_QUEUE_PRIORITY_DEFAULT, it may run on two different threads, because DISPATCH_QUEUE_PRIORITY_DEFAULT is not a serial queue.

Use this to create your serial queue that dispatches to DISPATCH_QUEUE_PRIORITY_DEFAULT:

dispatch_queue_t abQueue = dispatch_queue_create("myabqueue", DISPATCH_QUEUE_SERIAL);
dispatch_set_target_queue(abQueue, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0));

Remember to dispatch (sync or async) all your calls to address book to this queue.

EDIT:

It looks like you are calling dofetchContacts in a completion handler block passed into the function ABAddressBookRequestAccessWithCompletion. Be sure to dispatch this call on the main thread!

The documentation says:

The completion handler is called on an arbitrary queue. If your app uses an address book throughout the app, you are responsible for ensuring that all usage of that address book is dispatched to a single queue to ensure correct thread-safe operation.

Answer 2

Could it be that you're calling ABAddressBookCreateWithOptions() and/or ABAddressBookRequestAccessWithCompletion() on a different thread from where you're calling ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering()?

Please note the following from Apple's API documentation:

The completion handler is called on an arbitrary queue. If your app uses an address book throughout the app, you are responsible for ensuring that all usage of that address book is dispatched to a single queue to ensure correct thread-safe operation.

Source: http://developer.apple.com/library/ios/#documentation/AddressBook/Reference/ABAddressBookRef_iPhoneOS/Reference/reference.html

Alternatively, check to make sure you're not prematurely releasing the ABAddressBookRef you got back from ABAddressBookCreateWithOptions(). Remember that ABAddressBookRequestAccessWithCompletion() is asynchronous.