OTCloudStore.m   [plain text]

/*
* Copyright (c) 2017 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

#import <Foundation/Foundation.h>
#import <Foundation/NSKeyedArchiver_Private.h>
#import <CloudKit/CloudKit.h>
#import <CloudKit/CloudKit_Private.h>

#import "keychain/ot/OTCloudStore.h"
#import "keychain/ot/OTCloudStoreState.h"
#import "keychain/ckks/CKKSZoneStateEntry.h"
#import "keychain/ckks/CKKS.h"
#import "keychain/ot/OTDefines.h"
#import "keychain/ckks/CKKSReachabilityTracker.h"
#import <utilities/debugging.h>

NS_ASSUME_NONNULL_BEGIN

/* Octagon Trust Local Context Record Constants */
static NSString* OTCKRecordContextID = @"contextID";
static NSString* OTCKRecordDSID = @"accountDSID";
static NSString* OTCKRecordContextName = @"contextName";
static NSString* OTCKRecordZoneCreated = @"zoneCreated";
static NSString* OTCKRecordSubscribedToChanges = @"subscribedToChanges";
static NSString* OTCKRecordChangeToken = @"changeToken";
static NSString* OTCKRecordEgoPeerID = @"egoPeerID";
static NSString* OTCKRecordEgoPeerCreationDate = @"egoPeerCreationDate";
static NSString* OTCKRecordRecoverySigningSPKI = @"recoverySigningSPKI";
static NSString* OTCKRecordRecoveryEncryptionSPKI = @"recoveryEncryptionSPKI";
static NSString* OTCKRecordBottledPeerTableEntry = @"bottledPeer";

/* Octagon Trust Local Peer Record */
static NSString* OTCKRecordPeerID = @"peerID";
static NSString* OTCKRecordPermanentInfo = @"permanentInfo";
static NSString* OTCKRecordStableInfo = @"stableInfo";
static NSString* OTCKRecordDynamicInfo = @"dynamicInfo";
static NSString* OTCKRecordRecoveryVoucher = @"recoveryVoucher";
static NSString* OTCKRecordIsEgoPeer = @"isEgoPeer";

/* Octagon Trust BottledPeerSchema */
static NSString* OTCKRecordEscrowRecordID = @"escrowRecordID";
static NSString* OTCKRecordBottle = @"bottle";
static NSString* OTCKRecordSPID = @"spID";
static NSString* OTCKRecordEscrowSigningSPKI = @"escrowSigningSPKI";
static NSString* OTCKRecordPeerSigningSPKI = @"peerSigningSPKI";
static NSString* OTCKRecordSignatureFromEscrow = @"signatureUsingEscrow";
static NSString* OTCKRecordSignatureFromPeerKey = @"signatureUsingPeerKey";
static NSString* OTCKRecordEncodedRecord = @"encodedRecord";

/* Octagon Table Names */
static NSString* const contextTable = @"context";
static NSString* const peerTable = @"peer";
static NSString* const bottledPeerTable = @"bp";

/* Octagon Trust Schemas */
static NSString* const octagonZoneName = @"OctagonTrustZone";

/* Octagon Cloud Kit defines */
static NSString* OTCKContainerName = @"com.apple.security.keychain";
static NSString* OTCKZoneName = @"OctagonTrust";
static NSString* OTCKRecordName = @"bp-";
static NSString* OTCKRecordBottledPeerType = @"OTBottledPeer";

@interface OTCloudStore ()
@property (nonatomic, strong) NSString* dsid;
@property (nonatomic, strong) NSString* containerName;
@property (nonatomic, strong) CKModifyRecordsOperation* modifyRecordsOperation;
@property (nonatomic, strong) CKDatabaseOperation<CKKSFetchRecordZoneChangesOperation>* fetchRecordZoneChangesOperation;
@property (nonatomic, strong) NSOperationQueue *operationQueue;
@property (nonatomic, strong) OTLocalStore* localStore;
@property (nonatomic, strong) CKKSResultOperation* viewSetupOperation;
@property (nonatomic, strong) NSError* error;
@end

@class CKKSAPSReceiver;

@interface OTCloudStore()

@property CKDatabaseOperation<CKKSModifyRecordZonesOperation>* zoneCreationOperation;
@property CKDatabaseOperation<CKKSModifyRecordZonesOperation>* zoneDeletionOperation;
@property CKDatabaseOperation<CKKSModifySubscriptionsOperation>* zoneSubscriptionOperation;

@property NSOperation* accountLoggedInDependency;

@property NSHashTable<NSOperation*>* accountOperations;
@end

@implementation OTCloudStore

- (instancetype) initWithContainer:(CKContainer*) container
zoneName:(NSString*)zoneName
accountTracker:(nullable CKKSCKAccountStateTracker*)accountTracker
reachabilityTracker:(nullable CKKSReachabilityTracker*)reachabilityTracker
localStore:(OTLocalStore*)localStore
contextID:(NSString*)contextID
dsid:(NSString*)dsid
fetchRecordZoneChangesOperationClass:(Class<CKKSFetchRecordZoneChangesOperation>) fetchRecordZoneChangesOperationClass
fetchRecordsOperationClass:(Class<CKKSFetchRecordsOperation>)fetchRecordsOperationClass
queryOperationClass:(Class<CKKSQueryOperation>)queryOperationClass
modifySubscriptionsOperationClass:(Class<CKKSModifySubscriptionsOperation>) modifySubscriptionsOperationClass
modifyRecordZonesOperationClass:(Class<CKKSModifyRecordZonesOperation>) modifyRecordZonesOperationClass
apsConnectionClass:(Class<CKKSAPSConnection>) apsConnectionClass
operationQueue:(nullable NSOperationQueue *)operationQueue
{

self = [super initWithContainer:container
zoneName:zoneName
accountTracker:accountTracker
reachabilityTracker:reachabilityTracker
fetchRecordZoneChangesOperationClass:fetchRecordZoneChangesOperationClass
fetchRecordsOperationClass:fetchRecordsOperationClass
queryOperationClass:queryOperationClass
modifySubscriptionsOperationClass:modifySubscriptionsOperationClass
modifyRecordZonesOperationClass:modifyRecordZonesOperationClass
apsConnectionClass:apsConnectionClass];

if(self){
if (!operationQueue) {
operationQueue = [[NSOperationQueue alloc] init];
}
_contextID = [contextID copy];
_localStore = localStore;
_containerName = OTCKContainerName;
_dsid = [dsid copy];
_operationQueue = operationQueue;
self.queue = dispatch_queue_create([[NSString stringWithFormat:@"OctagonTrustQueue.%@.zone.%@", container.containerIdentifier, zoneName] UTF8String], DISPATCH_QUEUE_SERIAL);
[self initializeZone];
}
return self;

}

-(CKKSResultOperation*) otFetchAndProcessUpdates
{
CKKSResultOperation* fetchOp = [CKKSResultOperation named:@"fetch-and-process-updates-watcher" withBlock:^{}];

__weak __typeof(self) weakSelf = self;

[self dispatchSync: ^bool{

OTCloudStoreState* state = [OTCloudStoreState state: self.zoneName];

CKFetchRecordZoneChangesConfiguration* options = [[CKFetchRecordZoneChangesConfiguration alloc] init];
options.previousServerChangeToken = state.changeToken;

self.fetchRecordZoneChangesOperation = [[[self.fetchRecordZoneChangesOperationClass class] alloc] initWithRecordZoneIDs:@[self.zoneID] configurationsByRecordZoneID:@{self.zoneID : options}];

self.fetchRecordZoneChangesOperation.recordChangedBlock = ^(CKRecord *record) {
secinfo("octagon", "CloudKit notification: record changed(%@): %@", [record recordType], record);
__strong __typeof(weakSelf) strongSelf = weakSelf;

if(!strongSelf) {
secnotice("octagon", "received callback for released object");
fetchOp.error = [NSError errorWithDomain:octagonErrorDomain code:OTErrorOTCloudStore userInfo:@{NSLocalizedDescriptionKey: @"received callback for released object"}];

fetchOp.descriptionErrorCode = CKKSResultDescriptionPendingBottledPeerFetchRecords;

return;
}
if ([record.recordType isEqualToString:OTCKRecordBottledPeerType]) {
NSError* localError = nil;

//write to localStore
OTBottledPeerRecord *rec = [[OTBottledPeerRecord alloc] init];
rec.bottle = record[OTCKRecordBottle];
rec.spID = record[OTCKRecordSPID];
rec.escrowRecordID = record[OTCKRecordEscrowRecordID];
rec.escrowedSigningSPKI = record[OTCKRecordEscrowSigningSPKI];
rec.peerSigningSPKI = record[OTCKRecordPeerSigningSPKI];
rec.signatureUsingEscrowKey = record[OTCKRecordSignatureFromEscrow];
rec.signatureUsingPeerKey = record[OTCKRecordSignatureFromPeerKey];
rec.encodedRecord = [strongSelf recordToData:record];
rec.launched = @"YES";
BOOL result = [strongSelf.localStore insertBottledPeerRecord:rec escrowRecordID:record[OTCKRecordEscrowRecordID] error:&localError];
if(!result || localError){
secerror("Could not write bottled peer record:%@ to database: %@", record.recordID.recordName, localError);
fetchOp.error = localError;
fetchOp.descriptionErrorCode = CKKSResultDescriptionPendingBottledPeerFetchRecords;

}
secnotice("octagon", "fetched changes: %@", record);
}
};

self.fetchRecordZoneChangesOperation.recordWithIDWasDeletedBlock = ^(CKRecordID *RecordID, NSString *recordType) {
secinfo("octagon", "CloudKit notification: deleted record(%@): %@", recordType, RecordID);
};

self.fetchRecordZoneChangesOperation.recordZoneChangeTokensUpdatedBlock = ^(CKRecordZoneID *recordZoneID, CKServerChangeToken *serverChangeToken, NSData *clientChangeTokenData) {
__strong __typeof(weakSelf) strongSelf = weakSelf;
NSError* error = nil;
OTCloudStoreState* state = [OTCloudStoreState state: strongSelf.zoneName];
secdebug("octagon", "Received a new server change token: %@ %@", serverChangeToken, clientChangeTokenData);
state.changeToken = serverChangeToken;

if(error) {
secerror("octagon: Couldn't save new server change token: %@", error);
fetchOp.error = error;
fetchOp.descriptionErrorCode = CKKSResultDescriptionPendingBottledPeerFetchRecords;
}
};

// Completion blocks don't count for dependencies. Use this intermediate operation hack instead.
NSBlockOperation* recordZoneChangesCompletedOperation = [[NSBlockOperation alloc] init];
self.fetchRecordZoneChangesOperation.recordZoneFetchCompletionBlock = ^(CKRecordZoneID *recordZoneID, CKServerChangeToken *serverChangeToken, NSData *clientChangeTokenData, BOOL moreComing, NSError * recordZoneError) {
__strong __typeof(weakSelf) strongSelf = weakSelf;
if(!strongSelf) {
secnotice("octagon", "received callback for released object");
return;
}
if(recordZoneError) {
secerror("octagon: FetchRecordZoneChanges(%@) error: %@", strongSelf.zoneName, recordZoneError);
fetchOp.error = recordZoneError;
fetchOp.descriptionErrorCode = CKKSResultDescriptionPendingBottledPeerFetchRecords;
}

// TODO: fetch state here
if(serverChangeToken) {
NSError* error = nil;
secdebug("octagon", "Zone change fetch complete: received a new server change token: %@ %@", serverChangeToken, clientChangeTokenData);
state.changeToken = serverChangeToken;
if(error) {
secerror("octagon: Couldn't save new server change token: %@", error);
fetchOp.error = error;
fetchOp.descriptionErrorCode = CKKSResultDescriptionPendingBottledPeerFetchRecords;
}
}
secdebug("octagon", "Record zone fetch complete: changeToken=%@ error=%@", serverChangeToken, recordZoneError);

[strongSelf.operationQueue addOperation: recordZoneChangesCompletedOperation];
[strongSelf.operationQueue addOperation: fetchOp];

};
self.fetchRecordZoneChangesOperation.fetchRecordZoneChangesCompletionBlock = ^(NSError * _Nullable operationError) {
__strong __typeof(weakSelf) strongSelf = weakSelf;
if(!strongSelf) {
secnotice("octagon", "received callback for released object");
fetchOp.error = [NSError errorWithDomain:octagonErrorDomain code:OTErrorOTCloudStore userInfo:@{NSLocalizedDescriptionKey: @"received callback for released object"}];
fetchOp.descriptionErrorCode = CKKSResultDescriptionPendingBottledPeerFetchRecords;
return;
}
secnotice("octagon", "Record zone changes fetch complete: error=%@", operationError);
};
return true;
}];
[self.database addOperation: self.fetchRecordZoneChangesOperation];

return fetchOp;
}

- (void)notifyZoneChange:(CKRecordZoneNotification* _Nullable)notification
{
secnotice("octagon", "received notify zone change. notification: %@", notification);

CKKSResultOperation* op = [CKKSResultOperation named:@"cloudkit-fetch-and-process-changes" withBlock:^{}];

[op addSuccessDependency: [self otFetchAndProcessUpdates]];

[op timeout:(SecCKKSTestsEnabled() ? 2*NSEC_PER_SEC : 120*NSEC_PER_SEC)];
[self.operationQueue addOperation: op];

[op waitUntilFinished];
if(op.error != nil) {
secerror("octagon: failed to fetch changes error:%@", op.error);
}
else{
secnotice("octagon", "downloaded bottled peer records");
}
}

-(BOOL) downloadBottledPeerRecord:(NSError**)error
{
secnotice("octagon", "downloadBottledPeerRecord");
BOOL result = NO;
CKKSResultOperation* op = [CKKSResultOperation named:@"cloudkit-fetch-and-process-changes" withBlock:^{}];

[op addSuccessDependency: [self otFetchAndProcessUpdates]];

[op timeout:(SecCKKSTestsEnabled() ? 2*NSEC_PER_SEC : 120*NSEC_PER_SEC)];
[self.operationQueue addOperation: op];

[op waitUntilFinished];
if(op.error != nil) {
secerror("octagon: failed to fetch changes error:%@", op.error);
if(error){
*error = op.error;
}
}
else{
result = YES;
secnotice("octagon", "downloaded bottled peer records");
}
return result;
}

- (nullable NSArray*) retrieveListOfEligibleEscrowRecordIDs:(NSError**)error
{
NSError* localError = nil;

NSMutableArray* recordIDs = [NSMutableArray array];

//fetch any recent changes first before gathering escrow record ids
CKKSResultOperation* op = [CKKSResultOperation named:@"cloudkit-fetch-and-process-changes" withBlock:^{}];

secnotice("octagon", "Beginning CloudKit fetch");
[op addSuccessDependency: [self otFetchAndProcessUpdates]];

[op timeout:(SecCKKSTestsEnabled() ? 2*NSEC_PER_SEC : 120*NSEC_PER_SEC)];
[self.operationQueue addOperation: op];

[op waitUntilFinished];
if(op.error != nil) {
secnotice("octagon", "failed to fetch changes error:%@", op.error);
}

secnotice("octagon", "checking local store for bottles");

//check localstore for bottles
NSArray* localStoreBottledPeerRecords = [self.localStore readAllLocalBottledPeerRecords:&localError];
if(!localStoreBottledPeerRecords)
{
secerror("octagon: local store contains no bottled peer entries: %@", localError);
if(error){
*error = localError;
}
return nil;
}
for(OTBottledPeerRecord* entry in localStoreBottledPeerRecords){
NSString* escrowID = entry.escrowRecordID;
if(escrowID && ![recordIDs containsObject:escrowID]){
[recordIDs addObject:escrowID];
}
}

return recordIDs;
}

-(CKRecord*) dataToRecord:(NSData*)encodedRecord
{
NSKeyedUnarchiver *coder = [[NSKeyedUnarchiver alloc] initForReadingFromData:encodedRecord error:nil];
CKRecord* record = [[CKRecord alloc] initWithCoder:coder];
[coder finishDecoding];
return record;
}

-(NSData*) recordToData:(CKRecord*)record
{
NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initRequiringSecureCoding:YES];
[record encodeWithCoder:archiver];
[archiver finishEncoding];

return archiver.encodedData;
}

-( CKRecord* _Nullable ) CKRecordFromMirror:(CKRecordID*)recordID bpRecord:(OTBottledPeerRecord*)bprecord escrowRecordID:(NSString*)escrowRecordID error:(NSError**)error
{
CKRecord* record = nil;

OTBottledPeerRecord* recordFromDB = [self.localStore readLocalBottledPeerRecordWithRecordID:recordID.recordName error:error];
if(recordFromDB && recordFromDB.encodedRecord != nil){
record = [self dataToRecord:recordFromDB.encodedRecord];
}
else{
record = [[CKRecord alloc] initWithRecordType:OTCKRecordBottledPeerType recordID:recordID];
}

if(record == nil){
secerror("octagon: failed to create cloud kit record");
if(error){
*error = [NSError errorWithDomain:octagonErrorDomain code:OTErrorOTCloudStore userInfo:@{NSLocalizedDescriptionKey: @"failed to create cloud kit record"}];
}
return nil;
}
record[OTCKRecordPeerID] = bprecord.peerID;
record[OTCKRecordSPID] = bprecord.spID;
record[OTCKRecordEscrowSigningSPKI] = bprecord.escrowedSigningSPKI;
record[OTCKRecordPeerSigningSPKI] = bprecord.peerSigningSPKI;
record[OTCKRecordEscrowRecordID] = escrowRecordID;
record[OTCKRecordBottle] = bprecord.bottle;
record[OTCKRecordSignatureFromEscrow] = bprecord.signatureUsingEscrowKey;
record[OTCKRecordSignatureFromPeerKey] = bprecord.signatureUsingPeerKey;

return record;
}

-(CKKSResultOperation*) modifyRecords:(NSArray<CKRecord *>*) recordsToSave deleteRecordIDs:(NSArray<CKRecordID*>*) recordIDsToDelete
{
__weak __typeof(self) weakSelf = self;
CKKSResultOperation* modifyOp = [CKKSResultOperation named:@"modify-records-watcher" withBlock:^{}];

[self dispatchSync: ^bool{
self.modifyRecordsOperation = [[CKModifyRecordsOperation alloc] initWithRecordsToSave:recordsToSave recordIDsToDelete:recordIDsToDelete];

self.modifyRecordsOperation.atomic = YES;
self.modifyRecordsOperation.longLived = NO; // The keys are only in memory; mark this explicitly not long-lived

// Currently done during buddy. User is waiting.
self.modifyRecordsOperation.configuration.automaticallyRetryNetworkFailures = NO;
self.modifyRecordsOperation.configuration.discretionaryNetworkBehavior = CKOperationDiscretionaryNetworkBehaviorNonDiscretionary;

self.modifyRecordsOperation.savePolicy = CKRecordSaveIfServerRecordUnchanged;

self.modifyRecordsOperation.perRecordCompletionBlock = ^(CKRecord *record, NSError * _Nullable error) {
// These should all fail or succeed as one. Do the hard work in the records completion block.
if(!error) {
secnotice("octagon", "Successfully completed upload for %@", record.recordID.recordName);

} else {
secerror("octagon: error on row: %@ %@", record.recordID.recordName, error);
modifyOp.error = error;
modifyOp.descriptionErrorCode = CKKSResultDescriptionPendingBottledPeerModifyRecords;
[weakSelf.operationQueue addOperation:modifyOp];
}
};
self.modifyRecordsOperation.modifyRecordsCompletionBlock = ^(NSArray<CKRecord *> *savedRecords, NSArray<CKRecordID *> *deletedRecordIDs, NSError *error) {
secnotice("octagon", "Completed trust update");
__strong __typeof(weakSelf) strongSelf = weakSelf;

if(error){
modifyOp.error = error;
modifyOp.descriptionErrorCode = CKKSResultDescriptionPendingBottledPeerModifyRecords;
secerror("octagon: received error from cloudkit: %@", error);
if([error.domain isEqualToString:CKErrorDomain] && (error.code == CKErrorPartialFailure)) {
NSMutableDictionary<CKRecordID*, NSError*>* failedRecords = error.userInfo[CKPartialErrorsByItemIDKey];
ckksnotice("octagon", strongSelf, "failed records %@", failedRecords);
}
return;
}
if(!strongSelf) {
secerror("octagon: received callback for released object");
modifyOp.error = [NSError errorWithDomain:octagonErrorDomain code:OTErrorOTCloudStore userInfo:@{NSLocalizedDescriptionKey: @"received callback for released object"}];
modifyOp.descriptionErrorCode = CKKSResultDescriptionPendingBottledPeerModifyRecords;
[strongSelf.operationQueue addOperation:modifyOp];
return;
}

if(savedRecords && [savedRecords count] > 0){
for(CKRecord* record in savedRecords){
NSError* localError = nil;
secnotice("octagon", "saving recordID: %@ changeToken:%@", record.recordID.recordName, record.recordChangeTag);

//write to localStore
OTBottledPeerRecord *rec = [[OTBottledPeerRecord alloc] init];
rec.bottle = record[OTCKRecordBottle];
rec.spID = record[OTCKRecordSPID];
rec.escrowRecordID = record[OTCKRecordEscrowRecordID];
rec.signatureUsingEscrowKey = record[OTCKRecordSignatureFromEscrow];
rec.signatureUsingPeerKey = record[OTCKRecordSignatureFromPeerKey];
rec.encodedRecord = [strongSelf recordToData:record];
rec.launched = @"YES";
rec.escrowedSigningSPKI = record[OTCKRecordEscrowSigningSPKI];
rec.peerSigningSPKI = record[OTCKRecordPeerSigningSPKI];

BOOL result = [strongSelf.localStore insertBottledPeerRecord:rec escrowRecordID:record[OTCKRecordEscrowRecordID] error:&localError];

if(!result || localError){
secerror("Could not write bottled peer record:%@ to database: %@", record.recordID.recordName, localError);
}

if(localError){
secerror("octagon: could not save to database: %@", localError);
modifyOp.error = localError;
modifyOp.descriptionErrorCode = CKKSResultDescriptionPendingBottledPeerModifyRecords;
}
}
}
else if(deletedRecordIDs && [deletedRecordIDs count] >0){
for(CKRecordID* recordID in deletedRecordIDs){
secnotice("octagon", "removed recordID: %@", recordID);
NSError* localError = nil;
BOOL result = [strongSelf.localStore deleteBottledPeer:recordID.recordName error:&localError];
if(!result){
secerror("octagon: could not remove record id: %@, error:%@", recordID, localError);
modifyOp.error = localError;
modifyOp.descriptionErrorCode = CKKSResultDescriptionPendingBottledPeerModifyRecords;
}
}
}
[strongSelf.operationQueue addOperation:modifyOp];
};
return true;
}];

[self.database addOperation: self.modifyRecordsOperation];
return modifyOp;
}

- (BOOL) uploadBottledPeerRecord:(OTBottledPeerRecord *)bprecord
escrowRecordID:(NSString *)escrowRecordID
error:(NSError**)error
{
secnotice("octagon", "sending bottled peer to cloudkit");
BOOL result = YES;

CKRecordID* recordID = [[CKRecordID alloc] initWithRecordName:bprecord.recordName zoneID:self.zoneID];
CKRecord *record = [self CKRecordFromMirror:recordID bpRecord:bprecord escrowRecordID:escrowRecordID error:error];

if(!record){
return NO;
}
CKKSResultOperation* op = [CKKSResultOperation named:@"cloudkit-modify-changes" withBlock:^{}];

secnotice("octagon", "Beginning CloudKit ModifyRecords");
[op addSuccessDependency: [self modifyRecords:@[ record ] deleteRecordIDs:@[]]];

[op timeout:(SecCKKSTestsEnabled() ? 2*NSEC_PER_SEC : 120*NSEC_PER_SEC)];
[self.operationQueue addOperation: op];

[op waitUntilFinished];
if(op.error != nil) {
secerror("octagon: failed to commit record changes error:%@", op.error);
if(error){
*error = op.error;
}
return NO;
}
secnotice("octagon", "successfully uploaded record: %@", bprecord.recordName);
return result;
}

-(BOOL) removeBottledPeerRecordID:(CKRecordID*)recordID error:(NSError**)error
{
secnotice("octagon", "removing bottled peer from cloudkit");
BOOL result = YES;

NSMutableArray<CKRecordID*>* recordIDsToRemove = [[NSMutableArray alloc] init];
[recordIDsToRemove addObject:recordID];

CKKSResultOperation* op = [CKKSResultOperation named:@"cloudkit-modify-changes" withBlock:^{}];

secnotice("octagon", "Beginning CloudKit ModifyRecords");
[op addSuccessDependency: [self modifyRecords:[NSMutableArray array] deleteRecordIDs:recordIDsToRemove]];

[op timeout:(SecCKKSTestsEnabled() ? 2*NSEC_PER_SEC : 120*NSEC_PER_SEC)];
[self.operationQueue addOperation: op];

[op waitUntilFinished];
if(op.error != nil) {
secerror("octagon: ailed to commit record changes error:%@", op.error);
if(error){
*error = op.error;
}
return NO;
}

return result;
}

- (void)_onqueueHandleCKLogin {
if(!SecCKKSIsEnabled()) {
ckksnotice("ckks", self, "Skipping CloudKit initialization due to disabled CKKS");
return;
}

dispatch_assert_queue(self.queue);

__weak __typeof(self) weakSelf = self;

CKKSZoneStateEntry* ckse = [CKKSZoneStateEntry state: self.zoneName];
[self handleCKLogin:ckse.ckzonecreated zoneSubscribed:ckse.ckzonesubscribed];

self.viewSetupOperation = [CKKSResultOperation operationWithBlock: ^{
__strong __typeof(weakSelf) strongSelf = weakSelf;
if(!strongSelf) {
ckkserror("ckks", strongSelf, "received callback for released object");
return;
}

__block bool quit = false;

[strongSelf dispatchSync: ^bool {
ckksnotice("octagon", strongSelf, "Zone setup progress: %@ %d %@ %d %@",
[CKKSCKAccountStateTracker stringFromAccountStatus:strongSelf.accountStatus],
strongSelf.zoneCreated, strongSelf.zoneCreatedError, strongSelf.zoneSubscribed, strongSelf.zoneSubscribedError);

NSError* error = nil;
CKKSZoneStateEntry* ckse = [CKKSZoneStateEntry state: strongSelf.zoneName];
ckse.ckzonecreated = strongSelf.zoneCreated;
ckse.ckzonesubscribed = strongSelf.zoneSubscribed;

// Although, if the zone subscribed error says there's no zone, mark down that there's no zone
if(strongSelf.zoneSubscribedError &&
[strongSelf.zoneSubscribedError.domain isEqualToString:CKErrorDomain] && strongSelf.zoneSubscribedError.code == CKErrorPartialFailure) {
NSError* subscriptionError = strongSelf.zoneSubscribedError.userInfo[CKPartialErrorsByItemIDKey][strongSelf.zoneID];
if(subscriptionError && [subscriptionError.domain isEqualToString:CKErrorDomain] && subscriptionError.code == CKErrorZoneNotFound) {

ckkserror("octagon", strongSelf, "zone subscription error appears to say the zone doesn't exist, fixing status: %@", strongSelf.zoneSubscribedError);
ckse.ckzonecreated = false;
}
}

[ckse saveToDatabase: &error];
if(error) {
ckkserror("octagon", strongSelf, "couldn't save zone creation status for %@: %@", strongSelf.zoneName, error);
}

if(!strongSelf.zoneCreated || !strongSelf.zoneSubscribed || strongSelf.accountStatus != CKAccountStatusAvailable) {
// Something has gone very wrong. Error out and maybe retry.
quit = true;

// Note that CKKSZone has probably called [handleLogout]; which means we have a key hierarchy reset queued up. Error here anyway.
NSError* realReason = strongSelf.zoneCreatedError ? strongSelf.zoneCreatedError : strongSelf.zoneSubscribedError;
strongSelf.viewSetupOperation.error = realReason;

return true;
}

return true;
}];

if(quit) {
ckkserror("octagon", strongSelf, "Quitting setup.");
return;
}
}];
self.viewSetupOperation.name = @"zone-setup";

[self.viewSetupOperation addNullableDependency: self.zoneSetupOperation];
[self scheduleAccountStatusOperation: self.viewSetupOperation];
}

- (void)handleCKLogin
{
ckksinfo("octagon", self, "received a notification of CK login");

__weak __typeof(self) weakSelf = self;
CKKSResultOperation* login = [CKKSResultOperation named:@"octagon-login" withBlock:^{
__strong __typeof(self) strongSelf = weakSelf;

[strongSelf dispatchSync:^bool{
strongSelf.accountStatus = CKKSAccountStatusAvailable;
[strongSelf _onqueueHandleCKLogin];
return true;
}];
}];

[self scheduleAccountStatusOperation:login];
}

- (bool)_onqueueResetLocalData: (NSError * __autoreleasing *) error {
dispatch_assert_queue(self.queue);

NSError* localerror = nil;
bool setError = false;

CKKSZoneStateEntry* ckse = [CKKSZoneStateEntry state: self.zoneName];
ckse.ckzonecreated = false;
ckse.ckzonesubscribed = false;
ckse.changeToken = NULL;
[ckse saveToDatabase: &localerror];
if(localerror) {
ckkserror("ckks", self, "couldn't reset zone status for %@: %@", self.zoneName, localerror);
if(error && !setError) {
*error = localerror; setError = true;
}
}

BOOL result = [_localStore removeAllBottledPeerRecords:&localerror];
if(!result){
*error = localerror;
secerror("octagon: failed to move all bottled peer entries for context: %@ error: %@", self.contextID, localerror);
}
return (localerror == nil && !setError);
}

-(CKKSResultOperation*) resetOctagonTrustZone:(NSError**)error
{
// On a reset, we should cancel all existing operations
[self cancelAllOperations];
CKKSResultOperation* reset = [super deleteCloudKitZoneOperation:nil];
[self scheduleOperationWithoutDependencies:reset];

__weak __typeof(self) weakSelf = self;
CKKSGroupOperation* resetFollowUp = [[CKKSGroupOperation alloc] init];
resetFollowUp.name = @"cloudkit-reset-follow-up-group";

[resetFollowUp runBeforeGroupFinished: [CKKSResultOperation named:@"cloudkit-reset-follow-up" withBlock: ^{
__strong __typeof(weakSelf) strongSelf = weakSelf;
if(!strongSelf) {
ckkserror("octagon", strongSelf, "received callback for released object");
return;
}

if(!reset.error) {
ckksnotice("octagon", strongSelf, "Successfully deleted zone %@", strongSelf.zoneName);
__block NSError* error = nil;

[strongSelf dispatchSync: ^bool{
[strongSelf _onqueueResetLocalData: &error];
return true;
}];
} else {
// Shouldn't ever happen, since reset is a successDependency
ckkserror("ckks", strongSelf, "Couldn't reset zone %@: %@", strongSelf.zoneName, reset.error);
}
}]];

[resetFollowUp addSuccessDependency:reset];
[self scheduleOperationWithoutDependencies:resetFollowUp];

return reset;
}

-(BOOL) performReset:(NSError**)error
{
BOOL result = NO;
CKKSResultOperation* op = [CKKSResultOperation named:@"cloudkit-reset-zones-waiter" withBlock:^{}];

secnotice("octagon", "Beginning CloudKit reset for Octagon Trust");
[op addSuccessDependency:[self resetOctagonTrustZone:error]];

[op timeout:(SecCKKSTestsEnabled() ? 2*NSEC_PER_SEC : 120*NSEC_PER_SEC)];
[self.operationQueue addOperation: op];

[op waitUntilFinished];
if(!op.error) {
secnotice("octagon", "Completed rpcResetCloudKit");
__weak __typeof(self) weakSelf = self;
CKKSResultOperation* login = [CKKSResultOperation named:@"octagon-login" withBlock:^{
__strong __typeof(self) strongSelf = weakSelf;

[strongSelf dispatchSync:^bool{
strongSelf.accountStatus = CKKSAccountStatusAvailable;
[strongSelf handleCKLogin:false zoneSubscribed:false];
return true;
}];
}];

[self.operationQueue addOperation:login];
result = YES;
} else {
secnotice("octagon", "Completed rpcResetCloudKit with error: %@", op.error);
if(error){
*error = op.error;
}
}

return result;
}

@end

NS_ASSUME_NONNULL_END
#endif