CKKSMirrorEntry.m   [plain text]

/*
* Copyright (c) 2016 Apple Inc. All Rights Reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/

#if OCTAGON

#include <AssertMacros.h>

#import <Foundation/Foundation.h>

#import "CKKSKeychainView.h"

#include <utilities/SecDb.h>
#include <securityd/SecDbItem.h>
#include <securityd/SecItemSchema.h>

#import <CloudKit/CloudKit.h>
#import "CKKSOutgoingQueueEntry.h"
#import "CKKSMirrorEntry.h"
#import "CKKSSIV.h"

@implementation CKKSMirrorEntry

-(instancetype)initWithCKKSItem:(CKKSItem*)item {
if((self = [super init])) {
_item = item;
_wasCurrent = 0;
}
return self;
}

-(instancetype)initWithCKRecord:(CKRecord*)record {
if((self = [super init])) {
_item = [[CKKSItem alloc] initWithCKRecord:record];

_wasCurrent = [record[SecCKRecordServerWasCurrent] unsignedLongLongValue];
}
return self;
}

- (NSString*)description {
return [NSString stringWithFormat: @"<%@(%@): %@>",
NSStringFromClass([self class]),
self.item.zoneID.zoneName,
self.item.uuid];
}

-(void)setFromCKRecord: (CKRecord*) record {
[self.item setFromCKRecord: record];
_wasCurrent = [record[SecCKRecordServerWasCurrent] unsignedLongLongValue];
}

- (bool)matchesCKRecord: (CKRecord*) record {
bool matches = [self.item matchesCKRecord: record];

if(matches) {

// Why is obj-c nullable equality so difficult?
if(!((record[SecCKRecordServerWasCurrent] == nil && self.wasCurrent == 0) ||
[record[SecCKRecordServerWasCurrent] isEqual: [NSNumber numberWithUnsignedLongLong:self.wasCurrent]])) {
secinfo("ckksitem", "was_current does not match");
matches = false;
}
}
return matches;
}

#pragma mark - Database Operations

+ (instancetype) fromDatabase: (NSString*) uuid zoneID:(CKRecordZoneID*)zoneID error: (NSError * __autoreleasing *) error {
return [self fromDatabaseWhere: @{@"UUID": CKKSNilToNSNull(uuid), @"ckzone":CKKSNilToNSNull(zoneID.zoneName)} error: error];
}

+ (instancetype) tryFromDatabase: (NSString*) uuid zoneID:(CKRecordZoneID*)zoneID error: (NSError * __autoreleasing *) error {
return [self tryFromDatabaseWhere: @{@"UUID": CKKSNilToNSNull(uuid), @"ckzone":CKKSNilToNSNull(zoneID.zoneName)} error: error];
}

#pragma mark - Property access to underlying CKKSItem

-(NSString*)uuid {
return self.item.uuid;
}

-(void)setUuid:(NSString *)uuid {
self.item.uuid = uuid;
}

#pragma mark - CKKSSQLDatabaseObject methods

+ (NSString*) sqlTable {
return @"ckmirror";
}

+ (NSArray<NSString*>*)sqlColumns {
return [[CKKSItem sqlColumns] arrayByAddingObjectsFromArray: @[@"wascurrent"]];
}

- (NSDictionary<NSString*,NSString*>*) whereClauseToFindSelf {
return [self.item whereClauseToFindSelf];
}

- (NSDictionary<NSString*,id>*)sqlValues {
NSMutableDictionary* values = [[self.item sqlValues] mutableCopy];
values[@"wascurrent"] = [NSNumber numberWithUnsignedLongLong:self.wasCurrent];
return values;
}

+ (instancetype) fromDatabaseRow: (NSDictionary*) row {
CKKSMirrorEntry* ckme = [[CKKSMirrorEntry alloc] initWithCKKSItem: [CKKSItem fromDatabaseRow:row]];

// This appears to be the best way to get an unsigned long long out of a string.
ckme.wasCurrent = [[[[NSNumberFormatter alloc] init] numberFromString:CKKSNSNullToNil(row[@"wascurrent"])] unsignedLongLongValue];
return ckme;
}

+ (NSDictionary<NSString*,NSNumber*>*)countsByParentKey:(CKRecordZoneID*)zoneID error: (NSError * __autoreleasing *) error {
NSMutableDictionary* results = [[NSMutableDictionary alloc] init];

[CKKSSQLDatabaseObject queryDatabaseTable: [[self class] sqlTable]
where: @{@"ckzone": CKKSNilToNSNull(zoneID.zoneName)}
columns: @[@"parentKeyUUID", @"count(rowid)"]
groupBy: @[@"parentKeyUUID"]
orderBy:nil
limit: -1
processRow: ^(NSDictionary* row) {
results[row[@"parentKeyUUID"]] = [NSNumber numberWithInteger: [row[@"count(rowid)"] integerValue]];
}
error: error];
return results;
}

@end

#endif