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session-ios/SignalServiceKit/src/Messages/DeviceSyncing/OWSSyncGroupsMessage.m

72 lines
2.6 KiB
Objective-C

//
// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
//
#import "OWSSyncGroupsMessage.h"
#import "NSDate+OWS.h"
#import "OWSGroupsOutputStream.h"
#import "OWSSignalServiceProtos.pb.h"
#import "TSAttachment.h"
#import "TSGroupModel.h"
#import "TSGroupThread.h"
NS_ASSUME_NONNULL_BEGIN
@implementation OWSSyncGroupsMessage
- (instancetype)init
{
return [super initWithTimestamp:[NSDate ows_millisecondTimeStamp]];
}
- (OWSSignalServiceProtosSyncMessageBuilder *)syncMessageBuilder
{
if (self.attachmentIds.count != 1) {
DDLogError(@"expected sync groups message to have exactly one attachment, but found %lu",
(unsigned long)self.attachmentIds.count);
}
OWSSignalServiceProtosAttachmentPointer *attachmentProto =
[self buildAttachmentProtoForAttachmentId:self.attachmentIds[0] filename:nil];
OWSSignalServiceProtosSyncMessageGroupsBuilder *groupsBuilder =
[OWSSignalServiceProtosSyncMessageGroupsBuilder new];
[groupsBuilder setBlob:attachmentProto];
OWSSignalServiceProtosSyncMessageBuilder *syncMessageBuilder = [OWSSignalServiceProtosSyncMessageBuilder new];
[syncMessageBuilder setGroupsBuilder:groupsBuilder];
return syncMessageBuilder;
}
- (NSData *)buildPlainTextAttachmentDataWithTransaction:(YapDatabaseReadTransaction *)transaction
{
// TODO use temp file stream to avoid loading everything into memory at once
// First though, we need to re-engineer our attachment process to accept streams (encrypting with stream,
// and uploading with streams).
NSOutputStream *dataOutputStream = [NSOutputStream outputStreamToMemory];
[dataOutputStream open];
OWSGroupsOutputStream *groupsOutputStream = [OWSGroupsOutputStream streamWithOutputStream:dataOutputStream];
[TSGroupThread
enumerateCollectionObjectsWithTransaction:transaction
usingBlock:^(id obj, BOOL *stop) {
if (![obj isKindOfClass:[TSGroupThread class]]) {
DDLogVerbose(@"Ignoring non group thread in thread collection: %@", obj);
return;
}
TSGroupModel *group = ((TSGroupThread *)obj).groupModel;
[groupsOutputStream writeGroup:group transaction:transaction];
}];
[groupsOutputStream flush];
[dataOutputStream close];
return [dataOutputStream propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
}
@end
NS_ASSUME_NONNULL_END